/* ==========================================================================
   TPR-DB Stylesheet
   A clean, minimal, and accessible design system
   ========================================================================== */

/* --- CSS Variables (Custom Properties) --- */
:root {
    --color-scheme: light;
    /* Color Palette - Light Mode */
    --text-primary: #1e3a8a;
    --primary-color: #1e3a8a; /* Deep blue */
    --primary-hover: #1e40af;
    --primary-active: #1e293b;
    
    --secondary-color: #44403c; /* Dark brown */
    --secondary-hover: #57534e;
    --secondary-active: #292524;
    --secondary-btn-text: #ffffff;
    
    --text-color: #1a1a1a; /* Near black for AAA contrast */
    --text-secondary: #4b5563; /* Muted text */
    --background-color: #ffffff;
    --background-secondary: #f9fafb;
    
    --border-color: #e5e7eb;
    --border-focus: #1e3a8a;
    
    --success-color: #166534; /* Dark green for AAA */
    --error-color: #991b1b; /* Dark red for AAA */
    --warning-color: #a16207; /* Dark yellow for AAA */
    
    /* Spacing System */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    
    /* Typography Scale */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    --font-size-5xl: 3rem;       /* 48px */
    
    /* Layout */
    --max-width-container: 1200px;
    --max-width-content: 65ch; /* Optimal reading width */
    --border-radius: 0.375rem; /* 6px */
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --color-scheme: dark;
        /* Color Palette - Dark Mode */
        --text-primary: #6cabf9;
        --primary-color: #0761cf;
        --primary-hover: #2275da;
        --primary-active: #034fac;
        
        --secondary-color: #d6d3d1; /* Light brown/stone for dark backgrounds */
        --secondary-hover: #e7e5e4;
        --secondary-active: #a8a29e;
        --secondary-btn-text: #292524;
        
        --text-color: #f9fafb; /* Near white for AAA contrast */
        --text-secondary: #d1d5db;
        --background-color: #111827; /* Dark blue-gray */
        --background-secondary: #1f2937;
        
        --border-color: #374151;
        --border-focus: #60a5fa;
        
        --success-color: #86efac; /* Light green for AAA on dark */
        --error-color: #fca5a5; /* Light red for AAA on dark */
        --warning-color: #fde047; /* Light yellow for AAA on dark */
    }
}

/* Force light mode (for manual toggle) */
html[data-theme="light"] {
    --color-scheme: light;
    --text-primary: #1e3a8a;
    --primary-color: #1e3a8a;
    --primary-hover: #1e40af;
    --primary-active: #1e293b;
    
    --secondary-color: #44403c;
    --secondary-hover: #57534e;
    --secondary-active: #292524;
    --secondary-btn-text: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #4b5563;
    --background-color: #ffffff;
    --background-secondary: #f9fafb;
    
    --border-color: #e5e7eb;
    --border-focus: #1e3a8a;
    
    --success-color: #166534;
    --error-color: #991b1b;
    --warning-color: #a16207;
}

/* Force dark mode (for manual toggle) */
html[data-theme="dark"] {
    --color-scheme: dark;
    --text-primary: #6cabf9;
    --primary-color: #0761cf;
    --primary-hover: #2275da;
    --primary-active: #034fac;
    
    --secondary-color: #d6d3d1;
    --secondary-hover: #e7e5e4;
    --secondary-active: #a8a29e;
    --secondary-btn-text: #292524;
    --text-color: #f9fafb;
    --text-secondary: #d1d5db;
    --background-color: #111827;
    --background-secondary: #1f2937;
    
    --border-color: #374151;
    --border-focus: #60a5fa;
    
    --success-color: #86efac;
    --error-color: #fca5a5;
    --warning-color: #fde047;
}

/* ==========================================================================
   Global Resets & Box-Sizing
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    color-scheme: var(--color-scheme);
}

.poof {
    display: none !important;
}

.error-ring {
    outline: 2px solid var(--error-color) !important;
    outline-offset: 3px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
html {
    font-size: 16px;
    line-height: 1.5;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 
                 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-base), color var(--transition-base);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

h1 {
    font-size: var(--font-size-5xl);
    margin-top: calc(var(--spacing-lg) * 2);
    margin-bottom: var(--spacing-lg);
}

h2 {
    margin-top: calc(var(--spacing-lg) * 2);
    font-size: var(--font-size-3xl);
}

h3 {
    margin-top: calc(var(--spacing-md) * 2);
    font-size: var(--font-size-2xl);
}

h4 {
    margin-top: calc(var(--spacing-md) * 2);
    font-size: var(--font-size-xl);
}

h5 {
    margin-top: calc(var(--spacing-sm) * 2);
    font-size: var(--font-size-lg);
}

h6 {
    margin-top: calc(var(--spacing-sm) * 2);
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

strong {
    font-weight: 600;
    color: var(--text-color);
}

/* ==========================================================================
   Links
   ========================================================================== */
a {
    color: var(--secondary-color);
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

a:hover, a:focus {
    color: var(--secondary-hover);
    text-decoration-style: solid;
}

a:active {
    color: var(--secondary-active);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */
.container {
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

main {
    flex: 1;
    padding: var(--spacing-lg) 0;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
header {
    background-color: var(--background-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    transition: background-color var(--transition-base);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

nav a {
    font-weight: 600;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

nav a:hover {
    background-color: var(--background-color);
    text-decoration: none;
}

nav > a:first-child {
    font-size: var(--font-size-lg);
    color: var(--text-color);
}

nav.breadcrumbs a {
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
}
nav.breadcrumbs a:hover {
    text-decoration-style: solid;
}

/* Logout button in nav */
nav form {
    margin: 0;
}

nav form button.header-btn {
    margin: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

nav form button.header-btn:hover {
    background-color: var(--background-color);
    color: var(--text-color);
    transform: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    background-color: var(--background-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
    text-align: center;
    transition: background-color var(--transition-base);
}

footer p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.theme-switcher-form {
    margin: 0;
    border: none;
    padding: 0;
    min-width: 0;
}

.language-switcher-form {
    margin-top: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.language-switcher-form select {
    width: 120px;
    margin: 0;
}

/* ==========================================================================
   Article Content
   ========================================================================== */
article {
    max-width: var(--max-width-container);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md) 0 var(--spacing-md);
}
article.skinny {
    max-width: var(--max-width-content);
}

.home-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

article > section {
    margin-top: var(--spacing-2xl);
}

/* ==========================================================================
   Forms
   ========================================================================== */
form {
    margin-top: var(--spacing-lg);
}

label,
legend {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    padding-inline-start: 10px;
    color: var(--text-color);
}

label.center-label,
legend.center-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

select {
    cursor: pointer;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="url"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

input[type="checkbox"],
input[type="radio"] {
    cursor: pointer;
}

@media (prefers-color-scheme: dark) {
    input[type="text"]:focus,
    input[type="password"]:focus,
    input[type="email"]:focus,
    input[type="number"]:focus,
    input[type="url"]:focus,
    textarea:focus,
    select:focus {
        box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
    }
}

input[type="hidden"] + div {
    margin-top: 0;
}

form.registration-form label, form#logInForm label {
    margin-top: var(--spacing-md);
}

small {
    padding-inline-start: var(--spacing-md);
    color: var(--text-secondary);
}

small ul {
    margin-inline-start: var(--spacing-md);
    padding-inline-start: var(--spacing-sm);
}

/* ── Underline-style inputs (workflow & reusable) ───────────────────────── */
.wf-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: 0.65rem;
}

.wf-input {
    display: block;
    width: 100%;
    padding: 0.8rem 0.95rem;
    border: 0;
    border-bottom: 1.5px solid var(--border-color);
    border-radius: 0;
    background: transparent;
    font-size: 1rem;
    color: var(--text-color);
    outline: none;
    transition: border-color 0.18s;
}
.wf-input:focus {
    border-bottom-color: var(--primary-color);
}
.wf-input::placeholder {
    color: color-mix(in srgb, var(--text-secondary) 65%, transparent);
}

.wf-label--meta {
    display: block;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.wf-input--meta {
    display: block;
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: transparent;
    font-size: 0.95rem;
    color: var(--text-color);
    outline: none;
    transition: border-color 0.15s;
    box-sizing: border-box;
}
.wf-input--meta:focus {
    border-color: var(--primary-color);
}
.wf-input--meta::placeholder {
    color: color-mix(in srgb, var(--text-secondary) 60%, transparent);
    font-style: italic;
}

.wf-textarea {
    resize: vertical;
    min-height: 5rem;
}

.wf-input--date {
    max-width: 14rem;
}

.wf-input--inline-edit {
    font-size: 1.3rem;
    font-weight: 700;
    border: 0;
    border-bottom: 2px solid var(--primary-color);
    background: transparent;
    outline: none;
    min-width: 12rem;
    color: var(--text-color);
}

/* ── Generic radio-button card ──────────────────────────────────────────── */
.radio-btn {
    padding: 0.7rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--background-color);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    color: var(--text-color);
    transition: border-color 0.15s, background 0.15s;
}
.radio-btn input[type="radio"] { margin: 0; cursor: pointer; }
.radio-btn:has(input:checked) {
    border-color: var(--primary-color);
    background: color-mix(in srgb, var(--primary-color) 8%, var(--background-color));
    font-weight: 700;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    color: #ffffff;
    text-decoration: none;
    background-color: var(--primary-color);
    border: 1px solid var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-fast), 
                border-color var(--transition-fast),
                transform var(--transition-fast);
}

.btn.square,
button.square {
    --square-btn-size: calc(var(--font-size-base) + (2 * var(--spacing-sm)) + 2px);
    inline-size: var(--square-btn-size);
    block-size: var(--square-btn-size);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    line-height: 1;
    flex: 0 0 auto;
}

button:hover,
button:focus,
.btn:hover,
.btn:focus {
    color: #ffffff;
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    text-decoration: none;
    transform: translateY(-1px);
}

button:active,
.btn:active {
    background-color: var(--primary-active);
    border-color: var(--primary-active);
    text-decoration: none;
    transform: translateY(0);
}

button:disabled,
.btn:disabled,
a.btn[aria-disabled="true"],
select:disabled,
input:disabled {
    opacity: 0.8;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

button[type="submit"] {
    margin-top: var(--spacing-lg);
}

button[type="submit"].dialog-close {
    margin-top: 0;
}

/* Secondary Button Variant */
.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--secondary-btn-text);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
    color: var(--secondary-btn-text);
}

.btn-secondary:active {
    background-color: var(--secondary-active);
    border-color: var(--secondary-active);
    color: var(--secondary-btn-text);
}

/* Outline Button Variant */
.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* Danger Button Variants */
.btn-danger-subtle {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--secondary-btn-text);
}

.btn-danger-subtle:hover, .btn-danger-subtle:focus, .btn-danger-subtle:active {
    background-color: #991b1b;
    border-color: #991b1b;
    color: #ffffff;
}

/* Small button variants */
.btn-xs {
    padding: 0.3rem 0.6rem;
    font-size: 0.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 0.3rem;
}
.btn-sm {
    padding: 0.45rem 0.9rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 0.35rem;
}

.btn-sm.square {
    --square-btn-size-sm: calc(var(--font-size-base) + var(--spacing-sm) + 2px);
    inline-size: var(--square-btn-size-sm);
    block-size: var(--square-btn-size-sm);
}

/* Full-width layout modifier */
.btn--full {
    width: 100%;
    margin-top: 0.75rem;
}

/* Ghost button — no background or border */
.btn-ghost {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 0.5rem 0;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn-ghost:hover,
.btn-ghost:focus {
    color: var(--text-color);
    background: none;
    border: none;
    transform: none;
}

/* Link-style button */
.btn-link {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    cursor: pointer;
    padding: 0;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}
.btn-link:hover,
.btn-link:focus {
    opacity: 0.75;
    background: none;
    border: none;
    color: var(--text-primary);
    transform: none;
}
.btn-link--icon {
    margin-top: 0.5rem;
    text-transform: uppercase;
}

/* ── Step-2 outline action buttons ──────────────────────────────────────── */
.btn-outline--confirm,
.btn-outline--customize,
.btn-outline--wrong {
    background: var(--background-color);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* Confirm — success colour */
.btn-outline--confirm {
    color: var(--success-color);
    border-color: var(--success-color);
}
.btn-outline--confirm:hover,
.btn-outline--confirm:focus {
    background: color-mix(in srgb, var(--success-color) 8%, var(--background-color));
    color: var(--success-color);
    border-color: var(--success-color);
    transform: none;
}
.btn-outline--confirm.is-active {
    background: var(--success-color);
    border-color: var(--success-color);
    color: var(--secondary-btn-text);
}

/* Customize — secondary colour */
.btn-outline--customize {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}
.btn-outline--customize:hover,
.btn-outline--customize:focus {
    background: color-mix(in srgb, var(--secondary-color) 8%, var(--background-color));
    color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: none;
}
.btn-outline--customize.is-active {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--secondary-btn-text);
}

/* Wrong — warning colour */
.btn-outline--wrong {
    color: var(--warning-color);
    border-color: var(--warning-color);
}
.btn-outline--wrong:hover,
.btn-outline--wrong:focus {
    background: color-mix(in srgb, var(--warning-color) 8%, var(--background-color));
    color: var(--warning-color);
    border-color: var(--warning-color);
    transform: none;
}
.btn-outline--wrong.is-active {
    background: var(--warning-color);
    border-color: var(--warning-color);
    color: var(--secondary-btn-text);
}

/* ── Tooltip wrapper + tooltip ──────────────────────────────────────────── */
.tt-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.help-tt-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    padding: 0.15rem;
    border: 1px solid transparent;
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    cursor: help;
}

.help-tt-trigger:hover,
.help-tt-trigger:focus {
    color: var(--text-color);
    background-color: transparent;
    border-color: transparent;
}

.help-tt-trigger svg {
    width: 0.9rem;
    height: 0.9rem;
}

.tt-wrapper .tooltip {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    padding: 0.4rem 0.65rem;
    border-radius: 0.4rem;
    background: var(--primary-active, #1e293b);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 400;
    line-height: 1.35;
    white-space: normal;
    width: max-content;
    max-width: 260px;
    text-align: center;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s, visibility 0.15s;
    z-index: 10;
}

.tt-wrapper .tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--primary-active, #1e293b);
}

.tt-wrapper .help-tt-trigger:hover + .tooltip,
.tt-wrapper .help-tt-trigger:focus + .tooltip {
    opacity: 1;
    visibility: visible;
}

/* ── Extra Data checkbox group ──────────────────────────────────────────── */
.wf-extra-data-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.wf-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.wf-checkbox-label input[type="checkbox"] {
    margin: 0;
    cursor: pointer;
}

/* ==========================================================================
   Messages & Alerts
   ========================================================================== */
[role="alert"] {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
    border-inline-start: 4px solid var(--error-color);
    background-color: var(--background-secondary);
}

[role="alert"] p {
    margin: 0;
    color: var(--error-color);
    font-weight: 500;
}

section[aria-label="Messages"] {
    position: fixed;
    inset-inline-start: var(--spacing-md);
    z-index: 900;
    width: 300px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

section[aria-label="Messages"] [role="alert"] {
    border-inline-start-color: var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    pointer-events: auto;
    position: relative;
    padding-inline-end: 2rem;
}

section[aria-label="Messages"] [role="alert"] p {
    color: var(--text-color);
    margin: 0;
    font-size: var(--font-size-sm);
}

.msg-dismiss {
    position: absolute;
    inset-block-start: 0.35rem;
    inset-inline-end: 0.35rem;
    padding: 0;
    margin: 0;
    width: 1.25rem;
    height: 1.25rem;
    min-width: 0;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.msg-dismiss:hover,
.msg-dismiss:focus {
    color: var(--text-color);
    background-color: var(--border-color);
    transform: none;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */
:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Skip to main content link (for screen readers) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
    color: white;
}

.skip-link:active {
    color: white;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

.text-center {
    text-align: center;
}

.text-secondary {
    color: var(--text-secondary);
}

.input-error {
    outline: 2px solid var(--error-color);
    outline-offset: -1px;
}

.balance {
    text-wrap: balance;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logout-actions {
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.schema-actions-cell {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.schema-actions-cell .btn:not(.square) {
    --square-btn-size: calc(var(--font-size-base) + (2 * var(--spacing-sm)) + 2px);
    min-block-size: var(--square-btn-size);
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.schema-delete-icon-btn {
    min-width: 2.25rem;
    padding: 0.4rem 0.6rem;
}

.schema-delete-modal {
    width: min(520px, 92vw);
    max-height: min(84vh, 40rem);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 0;
    background: var(--background-color);
    color: var(--text-color);
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
}

.schema-delete-modal::backdrop {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px) brightness(60%);
}

.schema-delete-modal-inner {
    padding: var(--spacing-lg);
    max-height: inherit;
    overflow-y: auto;
}

.schema-delete-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.schema-delete-modal-note {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border: 1px solid var(--color-warning-border, #ffda6a);
    border-radius: var(--border-radius);
    background: var(--color-warning-bg, #fff3cd);
    color: var(--color-warning-text, #664d03);
}

.schema-editor-meta .schema-delete-inline {
    align-self: flex-end;
}

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.svg-icon {
    width: 1em;
    height: 1em;
    fill: currentColor;
}

.svg-icon-bigger {
    width: 1.5em;
    height: 1.5em;
    fill: currentColor;
}

/* ==========================================================================
   Timezone Preference
   ========================================================================== */
input[list="timezone-options"] {
    max-width: 26rem;
    width: 100%;
}

/* ==========================================================================
   Studies Pages
   ========================================================================== */
.breadcrumbs {
    max-width: var(--max-width-container);
    margin: var(--spacing-md) auto;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.breadcrumbs li {
    display: flex;
    align-items: center;
}

.breadcrumbs li:not(:last-child)::after {
    content: "/";
    margin-inline-start: var(--spacing-sm);
    color: var(--text-secondary);
}

.breadcrumbs a {
    color: var(--text-primary);
    text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus {
    text-decoration: underline;
}

.breadcrumbs li[aria-current="page"] {
    padding-inline-start: var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
}

.studies-list {
    max-width: var(--max-width-content);
    list-style: none;
    padding: 0;
    margin: var(--spacing-xl) auto;
}

.study-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background: var(--background-secondary);
    transition: box-shadow var(--transition-fast);
}

.study-item:hover {
    box-shadow: var(--shadow-md);
}

.study-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.study-header h2 {
    margin: 0;
    font-size: var(--font-size-2xl);
}

.study-header dl,
.study-languages,
.study-meta dl {
    margin: 0;
}

.study-header dt,
.study-languages dt,
.study-meta dt {
    font-weight: 700;
    color: var(--text-secondary);
}

.study-header dd,
.study-languages dd,
.study-meta dd {
    margin: 0;
}

.inline-pairs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs) var(--spacing-sm);
    align-items: center;
}

.term-pair {
    display: inline-flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    text-wrap: balance;
}
.term-pair.center-align {
    align-items: center;
}

.study-id-pair {
    font-size: var(--font-size-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-inline-start: var(--spacing-sm);
    padding: var(--spacing-xs);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1;
    text-transform: uppercase;
}

.id-badge,
.legacy-badge {
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    min-height: 1.5rem;
    vertical-align: middle;
}

.id-badge {
    background-color: var(--primary-color);
    color: #ffffff;
    text-transform: unset;
}
.legacy-badge {
    background-color: var(--secondary-color);
    color: var(--secondary-btn-text);
}

.study-description {
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.study-languages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--background-color);
    border-radius: var(--border-radius);
}

.language-info {
    font-size: var(--font-size-sm);
    align-items: baseline;
    flex-wrap: wrap;
    white-space: normal;
}

.study-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.meta-item {
    padding: var(--spacing-xs) 0;
}

.modality-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.modality-row {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0;
    white-space: normal;
}

.modality-tt-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.modality-tt-trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    padding: 0.15rem;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--background-secondary);
    color: var(--text-secondary);
    cursor: help;
    transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.modality-tt-trigger:hover {
    filter: brightness(0.9);
    transform: none;
    cursor: help;
}

.modality-tt-trigger:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.modality-tt-trigger svg {
    width: 0.9rem;
    height: 0.9rem;
}

.modality-tt-tooltip {
    position: absolute;
    inset-inline-start: calc(100% + var(--spacing-xs));
    top: 50%;
    transform: translateY(-50%);
    min-width: 13rem;
    max-width: min(24rem, 75vw);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-color);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
    line-height: 1.35;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 20;
}

.modality-tt-tooltip strong {
    display: block;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.2rem;
    letter-spacing: 0.04em;
}

.modality-tt-tooltip span {
    display: block;
    font-size: var(--font-size-sm);
    word-break: break-word;
}

.modality-tt-wrap:hover .modality-tt-tooltip,
.modality-tt-wrap:focus-within .modality-tt-tooltip {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    .modality-tt-tooltip {
        inset-inline-start: auto;
        inset-inline-end: 0;
        top: calc(100% + var(--spacing-xs));
        transform: none;
    }
}

.participant-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.participant-breakdown {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.participant-breakdown-list {
    gap: var(--spacing-xs) var(--spacing-md);
}

.study-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.study-actions .is-disabled {
    pointer-events: none;
    opacity: 0.55;
}

.study-processing-note {
    margin: 0;
    font-size: var(--font-size-sm);
    color: color-mix(in srgb, var(--warning-color) 70%, var(--text-color));
}

.pipeline-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
}

.pipeline-badge--processing,
.pipeline-badge--unprocessed {
    background: color-mix(in srgb, var(--warning-color) 20%, var(--background-color));
    color: var(--text-color);
}

.pipeline-badge--completed {
    background: color-mix(in srgb, var(--success-color) 20%, var(--background-color));
    color: var(--text-color);
}

.pipeline-badge--partial {
    background: color-mix(in srgb, var(--warning-color) 35%, var(--background-color));
    color: var(--text-color);
}

.pipeline-badge--failed {
    background: color-mix(in srgb, var(--error-color) 20%, var(--background-color));
    color: var(--text-color);
}

.pipeline-badge--sessions_missing {
    background: color-mix(in srgb, var(--warning-color) 28%, var(--background-color));
    color: color-mix(in srgb, var(--warning-color) 90%, #111827);
}

.study-status-message {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.study-status-message--processing,
.study-status-message--unprocessed {
    color: color-mix(in srgb, var(--warning-color) 70%, var(--text-color));
}

.study-status-message--completed {
    color: color-mix(in srgb, var(--success-color) 75%, var(--text-color));
}

.study-status-message--partial {
    color: color-mix(in srgb, var(--warning-color) 85%, var(--text-color));
}

.study-status-message--failed {
    color: color-mix(in srgb, var(--error-color) 85%, var(--text-color));
}

.study-status-message--sessions_missing {
    color: color-mix(in srgb, var(--warning-color) 90%, #111827);
}

.study-actions .btn {
    margin-top: 0;
}

.study-action-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.session-download-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.session-download-bar .btn-download {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.sessions-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
}

.sessions-table th,
.sessions-table td {
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
}

.sessions-table th {
    background: var(--background-secondary);
}

.sessions-table tr:focus-within,
.sessions-table tr:hover {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

.session-download-cell {
    white-space: nowrap;
}

.btn-icon-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 3rem;
    margin-right: var(--spacing-xs);
    padding: var(--spacing-2xs, 0.2rem) var(--spacing-xs);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--background-color);
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 700;
    line-height: 1.2;
}

.btn-icon-download:hover,
.btn-icon-download:focus {
    border-color: var(--primary-color);
    background: color-mix(in srgb, var(--primary-color) 10%, var(--background-color));
    color: var(--primary-color);
    transform: none;
}

.btn-icon-download--table {
    color: var(--secondary-color);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    color: var(--text-secondary);
}

.empty-state code {
    background: var(--background-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
}

/* ==========================================================================
   Custom Styles
   ========================================================================== */
.page-header {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}
.page-header-split {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    flex-wrap: wrap;
}
.page-header-main {
    flex: 1 1 0;
    min-width: 200px;
}

.study-create-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.study-create-actions p {
    margin-bottom: 0;
}
.page-header-aside {
    flex: 0 1 auto;
    text-align: right;
}
.page-header-aside h2 {
    margin-top: 0;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    nav {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    main {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    button,
    .btn {
        width: 100%;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    header nav,
    footer,
    button,
    form {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}

/* ==========================================================================
   Theme Switcher
   ========================================================================== */
.theme-switcher {
    display: flex;
    gap: var(--spacing-xs);
    background-color: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs);
}

label.theme-btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    background-color: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: calc(var(--border-radius) - 2px);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    margin: 0;
}

.theme-btn:hover {
    color: var(--text-color);
    background-color: var(--background-color);
    transform: none;
}

.theme-btn:has(input:checked) {
    background-color: var(--primary-color);
    color: #ffffff;
}

.theme-btn:has(input:checked):hover {
    background-color: var(--primary-hover);
}

[dir="rtl"] .inline-pairs,
[dir="rtl"] .term-pair,
[dir="rtl"] .participant-breakdown-list {
    direction: rtl;
}

/* ==========================================================================
   Error Pages
   ========================================================================== */
.error-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 60vh;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.error-container h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

.error-container h2 {
    font-size: var(--font-size-2xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.error-container p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: var(--max-width-content);
}

@media (max-width: 480px) {
    .footer-controls {
        gap: var(--spacing-sm);
    }
}

.confirm-dialog {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    background: var(--background-color);
    color: var(--text-color);
    padding: 2em;
    margin: auto;
}

.confirm-dialog::backdrop {
    backdrop-filter: blur(2px) brightness(60%);
}

/* ── Schema Picker Modal ───────────────────────────────────────────── */

.mqm-modal {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    background: var(--background-color);
    color: var(--text-color);
    padding: 0;
    width: 90vw;
    max-width: 800px;
    height: 80vh;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
}

.mqm-modal::backdrop {
    backdrop-filter: blur(2px) brightness(60%);
}

.mqm-modal-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
}

.mqm-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-secondary);
    border-radius: 12px 12px 0 0;
    flex-shrink: 0;
}

.mqm-modal-header h2 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.25rem;
}

.mqm-modal-close {
    margin-inline-start: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.mqm-modal-close svg {
    display: block;
}

.mqm-modal-body {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    min-height: 0;
    background: var(--background-color);
}

.study-workflow-modal .mqm-modal-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.study-workflow-steps {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.workflow-step {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.workflow-step.is-active {
    border-color: var(--primary-color);
    color: var(--text-color);
    background: color-mix(in srgb, var(--primary-color) 12%, var(--background-color));
}

.study-workflow-modal form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.study-workflow-modal form section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.study-workflow-modal fieldset {
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.workflow-inline-hint {
    margin: 0;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    border: 1px solid color-mix(in srgb, var(--warning-color) 45%, var(--border-color));
    background: color-mix(in srgb, var(--warning-color) 12%, var(--background-color));
    color: var(--text-color);
    font-size: var(--font-size-sm);
}

.workflow-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-sm) var(--spacing-md);
}

.workflow-summary-grid dt {
    font-weight: 700;
    color: var(--text-secondary);
}

.workflow-summary-grid dd {
    margin: 0;
}

.study-workflow-footer {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.mqm-schema-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.mqm-annot-group {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.mqm-group-header {
    padding: 0.75rem 1rem;
    background: #2c3e50;
    color: #ffffff;
    font-weight: 600;
    text-transform: capitalize;
    font-size: 0.9rem;
}

.mqm-annot-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.mqm-annot-item:last-child {
    border-bottom: none;
}

.mqm-annot-icon {
    color: #000;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.mqm-annot-name {
    flex: 1;
    color: #000;
    font-weight: 500;
    font-size: 0.9rem;
}

.mqm-annot-key {
    background: var(--secondary-color);
    color: var(--background-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    font-weight: 600;
    font-size: 0.8rem;
    min-width: 1.5rem;
    text-align: center;
}

.schema-picker-modal {
    max-width: min(90vw, 64rem);
    width: 100%;
}

.schema-picker-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.schema-picker-body {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg, 1.5rem);
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.schema-selector-pane {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md, 0.75rem);
    min-width: 15rem;
    max-width: 20rem;
    flex-shrink: 0;
}

.schema-selector-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs, 0.25rem);
}

.schema-selector-field label {
    font-weight: 600;
    font-size: var(--font-size-sm, 0.875rem);
}

.schema-selector-field select {
    width: 100%;
}

.schema-annotations-warning {
    padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 0.75rem);
    border-radius: var(--radius-sm, 4px);
    background-color: var(--color-warning-bg, #fff3cd);
    color: var(--color-warning-text, #664d03);
    border: 1px solid var(--color-warning-border, #ffda6a);
    font-size: var(--font-size-sm, 0.875rem);
    margin: 0;
}

.schema-create-hint {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary);
    margin: 0;
}

.schema-viewer-pane {
    flex: 1;
    min-width: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm, 0.5rem);
}

.schema-viewer-pane h3 {
    margin: 0 0 var(--spacing-sm, 0.5rem) 0;
    font-size: var(--font-size-lg, 1.125rem);
}

.schema-picker-message {
    padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 0.75rem);
    border-radius: var(--radius-sm, 4px);
    font-size: var(--font-size-sm, 0.875rem);
    margin-top: var(--spacing-xs, 0.25rem);
}

.schema-picker-message--success {
    background-color: var(--color-success-bg, #d1e7dd);
    color: var(--color-success-text, #0a3622);
    border: 1px solid var(--color-success-border, #a3cfbb);
}

.schema-picker-message--error {
    background-color: var(--color-danger-bg, #f8d7da);
    color: var(--color-danger-text, #58151c);
    border: 1px solid var(--color-danger-border, #f1aeb5);
}

/* ==========================================================================
   Modality chips — reusable across session list, study info, etc.
   ========================================================================== */
.modality-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.75rem;
    height: 1.75rem;
    padding: 0 0.3rem;
    border-radius: 0.3rem;
    font-size: 0.72rem;
    font-weight: 800;
    cursor: default;
    flex-shrink: 0;
}

/* Modality colour classes (matches wf-chip--* in workflow but globally accessible) */
.chip--T   { background: #e8eaf6; color: #3949ab; }
.chip--E   { background: #e0f2f1; color: #00796b; }
.chip--P   { background: #fce4ec; color: #c62828; }
.chip--R   { background: #fff3e0; color: #e65100; }
.chip--MT  { background: #fce4ec; color: #ad1457; }
.chip--C   { background: #f3e5f5; color: #6a1b9a; }
.chip--D   { background: #e8f5e9; color: #2e7d32; }
.chip--S   { background: #fff8e1; color: #f57f17; }
.chip--I   { background: #e1f5fe; color: #0277bd; }
.chip--A   { background: #e8eaf6; color: #283593; }
.chip--L   { background: #f9fbe7; color: #558b2f; }
.chip--LV  { background: #fff3e0; color: #bf360c; }
.chip--U   { background: #e0f2f1; color: #004d40; }
.chip--H   { background: #fafafa; color: #424242; }
.chip--mod-ST { background: #ede7f6; color: #4527a0; } /* "ST" modality code */
.chip--unknown { background: var(--border-color); color: var(--text-secondary); }

/* ==========================================================================
   Session list: done/total segment ratio
   ========================================================================== */
.sessions-done-summary {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.seg-ratio {
    font-size: 0.82rem;
    white-space: nowrap;
    color: var(--text-secondary);
}

.seg-ratio--complete {
    color: var(--color-success-text, #2e7d32);
    font-weight: 700;
}

/* ==========================================================================
   Download bar grouped sections
   ========================================================================== */
.download-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.download-group h3 {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin: 0;
    padding-bottom: 0.2rem;
    border-bottom: 1px solid var(--border-color);
}

/* ==========================================================================
   Generate Tables button — spinner state
   ========================================================================== */
@keyframes btn-spin {
    to { transform: rotate(360deg); }
}

.btn-spinner {
    display: none;
    width: 1em;
    height: 1em;
    vertical-align: -0.2em;
    animation: btn-spin 0.75s linear infinite;
    flex-shrink: 0;
}

.btn-generate-tables.is-generating .btn-spinner,
.btn-generate-tables.is-processing .btn-spinner {
    display: inline-block;
}

/* ==========================================================================
   Generate Tables — inline progress bar
   ========================================================================== */

.tables-progress-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-top: var(--spacing-sm);
    visibility: hidden;
}

.tables-progress-wrap.is-visible {
    visibility: visible;
}

#tables-progress-bar {
    width: 100%;
    overflow: hidden;
    accent-color: var(--primary-color, #3b5bdb);
}

#tables-progress-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: right;
}