/* ========================================
   GLOBAL COMBINED CSS - LIGHT & DARK MODE
   ======================================== */

/* CSS Variables for Theme Switching */
:root {
    /* Light Mode Defaults */
    --primary-color: #2563eb;
    --secondary-color: #475569;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* Added for QBank Home Page */
    --primary-color-light: #667eea;
    --secondary-color-light: #764ba2;
    --success-color-light: #a7f3d0;
    --success-color-dark: #34d399;
    
    /* Typography - Modular Scale */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    --font-family-heading: var(--font-family-base);

    /* Base font size and line height */
    --font-size-base: 1rem; /* 16px */
    --line-height-base: 1.6;
    --line-height-tight: 1.4;
    --line-height-loose: 1.8;

    /* Typography Scale (Modular Scale: 1.2 ratio) */
    --font-size-xs: 0.75rem;     /* 12px */
    --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 */

    /* Font weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;

    /* Text utility variables */
    --text-xs: var(--font-size-xs);
    --text-sm: var(--font-size-sm);
    --text-base: var(--font-size-base);
    --text-lg: var(--font-size-lg);
    --text-xl: var(--font-size-xl);
    --text-2xl: var(--font-size-2xl);
    --text-3xl: var(--font-size-3xl);
    --text-4xl: var(--font-size-4xl);
    --text-5xl: var(--font-size-5xl);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* 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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-base: all 0.2s ease-in-out;
    --transition-slow: all 0.3s ease;
    
    /* Containers */
    --container-max: 72rem;
    
    /* Light Mode Colors */
    --bg-color: #f8fafc;
    --text-color: #333;
    --text-color-light: #555;
    --hero-text-color: white;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --input-focus-border: #2563eb;
    --input-focus-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    
    /* Table specific colors */
    --table-header-text: white;
    --table-row-alt-bg: #f9f9f9;
    --table-row-hover: #e3f2fd;
    --table-row-active: #bbdefb;
    
    /* Header & Navigation */
    --header-bg: #ffffff;
    --header-border: #e2e8f0;
    --nav-link-color: #475569;
    --nav-link-hover: #2563eb;
    --nav-link-active: #1d4ed8;
    
    /* Buttons */
    --btn-primary-bg: #2563eb;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #1d4ed8;
    --btn-secondary-bg: #6b7280;
    --btn-secondary-text: #ffffff;
    --btn-secondary-hover: #4b5563;
    --btn-success-bg: #22c55e;
    --btn-success-text: #ffffff;
    --btn-success-hover: #16a34a;
    --btn-danger-bg: #ef4444;
    --btn-danger-text: #ffffff;
    --btn-danger-hover: #dc2626;
    
    /* Tables */
    --table-bg: #ffffff;
    --table-border: #e2e8f0;
    --table-header-bg: #f8fafc;
    --table-row-hover: #f1f5f9;
    
    /* Forms */
    --form-label-color: #374151;
    --form-help-text: #495057;  /* Improved contrast - WCAG AA compliant */
    --form-error-color: #ef4444;
    --form-success-color: #22c55e;
    
    /* Alerts */
    --alert-info-bg: #dbeafe;
    --alert-info-border: #93c5fd;
    --alert-info-text: #1e40af;
    --alert-success-bg: #d1fae5;
    --alert-success-border: #6ee7b7;
    --alert-success-text: #065f46;
    --alert-warning-bg: #fef3c7;
    --alert-warning-border: #fcd34d;
    --alert-warning-text: #92400e;
    --alert-error-bg: #fee2e2;
    --alert-error-border: #fca5a5;
    --alert-error-text: #991b1b;

    /* QBank specific colors */
    --selected-bg: #e0f7fa;
    --success-bg: #d4edda;
    --success-border: #28a745;
    --danger-bg: #f8d7da;
    --danger-border: #dc3545;
    --primary-bg-light: #e3f2fd;
    --success-color-dark: #155724;
    --danger-color-dark: #721c24;
    --bg-color-light: #f8fafc;
    --border-color-hover: #e2e8f0;
    --primary-color-dark: #1d4ed8;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --bg-color: #1A202C;
    --text-color: #E2E8F0;
    --text-color-light: #A0AEC0;
    --hero-text-color: #F7FAFC;
    --card-bg: #2D3748;
    --border-color: #3A4452;
    --input-bg: #4A5568;
    --input-border: #5A67D8;
    --input-focus-border: #63B3ED;
    --input-focus-shadow: 0 0 0 3px rgba(99, 179, 237, 0.2);
    
    /* Added for QBank Home Page Dark Mode */
    --primary-color-light: #4299e1;
    --secondary-color-light: #805ad5;
    --success-color-light: #38a169;
    --success-color-dark: #2f855a;

    /* Header & Navigation */
    --header-bg: #2D3748;
    --header-border: #3A4452;
    --nav-link-color: #63B3ED;
    --nav-link-hover: #68D391;
    --nav-link-active: #48BB78;
    
    /* Buttons */
    --btn-primary-bg: #63B3ED;
    --btn-primary-text: #1A202C;
    --btn-primary-hover: #48BB78;
    --btn-secondary-bg: #4A5568;
    --btn-secondary-text: #E2E8F0;
    --btn-secondary-hover: #5A67D8;
    --btn-success-bg: #68D391;
    --btn-success-text: #1A202C;
    --btn-success-hover: #48BB78;
    --btn-danger-bg: #E06C75;
    --btn-danger-text: #1A202C;
    --btn-danger-hover: #C53030;
    
    /* Tables */
    --table-bg: #2D3748;
    --table-border: #3A4452;
    --table-header-bg: #4A5568;
    --table-row-hover: #3A4452;
    --table-header-text: #E2E8F0;
    --table-row-alt-bg: #2D3748;
    --table-row-active: #4A5568;
    
    /* Forms */
    --form-label-color: #E2E8F0;
    --form-help-text: #CBD5E0;  /* Improved contrast for dark mode - WCAG AA compliant */
    --form-error-color: #E06C75;
    --form-success-color: #68D391;
    
    /* Alerts */
    --alert-info-bg: #2C5282;
    --alert-info-border: #63B3ED;
    --alert-info-text: #BEE3F8;
    --alert-success-bg: #22543D;
    --alert-success-border: #68D391;
    --alert-success-text: #C6F6D5;
    --alert-warning-bg: #744210;
    --alert-warning-border: #F6AD55;
    --alert-warning-text: #FEEBC8;
    --alert-error-bg: #742A2A;
    --alert-error-border: #E06C75;
    --alert-error-text: #FED7D7;
    
    /* QBank specific colors */
    --selected-bg: #4A5568;
    --success-bg: #2D3748;
    --success-border: #48BB78;
    --danger-bg: #742A2A;
    --danger-border: #E06C75;
    --primary-bg-light: #2D3748;
    --success-color-dark: #68D391;
    --danger-color-dark: #FEB2B2;
    --bg-color-light: #2D3748;
    --border-color-hover: #4A5568;
    --primary-color-dark: #60A5FA;
}

/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base Typography */
html {
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family-base);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--nav-link-hover);
    text-decoration: underline;
}

/* Main Content Area */
main.main {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* Container System */
.container {
    width: min(100% - 2rem, var(--container-max));
    margin-inline: auto;
    padding: var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: var(--spacing-md);
}

/* Card Component */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.card-header {
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    line-height: 1;
}

.btn:focus {
    outline: none;
    box-shadow: var(--input-focus-shadow);
}

.btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}

.btn-primary:hover {
    background-color: var(--btn-primary-hover);
    transform: translateY(-1px);
}

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

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

.btn-success {
    background-color: var(--btn-success-bg);
    color: var(--btn-success-text);
}

.btn-success:hover {
    background-color: var(--btn-success-hover);
}

.btn-danger {
    background-color: var(--btn-danger-bg);
    color: var(--btn-danger-text);
}

.btn-danger:hover {
    background-color: var(--btn-danger-hover);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.125rem;
}

/* Form Components */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--form-label-color);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--input-border);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: var(--input-focus-shadow);
}

.form-control::placeholder {
    color: var(--form-help-text);
}

.form-help {
    font-size: 0.875rem;
    color: var(--form-help-text);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.875rem;
    color: var(--form-error-color);
    margin-top: var(--spacing-xs);
}

.form-success {
    font-size: 0.875rem;
    color: var(--form-success-color);
    margin-top: var(--spacing-xs);
}

/* Table Components */
.table {
    width: 100%;
    background-color: var(--table-bg);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--table-border);
}

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

.table th {
    background-color: var(--table-header-bg);
    font-weight: 600;
    color: var(--text-color);
}

.table tr:hover {
    background-color: var(--table-row-hover);
}

/* Alert Components */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid;
}

.alert-info {
    background-color: var(--alert-info-bg);
    border-color: var(--alert-info-border);
    color: var(--alert-info-text);
}

.alert-success {
    background-color: var(--alert-success-bg);
    border-color: var(--alert-success-border);
    color: var(--alert-success-text);
}

.alert-warning {
    background-color: var(--alert-warning-bg);
    border-color: var(--alert-warning-border);
    color: var(--alert-warning-text);
}

.alert-error {
    background-color: var(--alert-error-bg);
    border-color: var(--alert-error-border);
    color: var(--alert-error-text);
}

/* Navigation Components */
.nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--nav-link-color);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--nav-link-hover);
    background-color: rgba(99, 179, 237, 0.1);
}

.nav-link.active {
    color: var(--nav-link-active);
    background-color: rgba(99, 179, 237, 0.2);
}

/* Header Component */
.header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }

.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--border-radius-md); }
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-lg { border-radius: var(--border-radius-lg); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .btn {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }
}

/* ========================================
   HEADER-CLEAN MOBILE STYLES (≤ 760px)
   ======================================== */
@media (max-width: 760px) {
    /* Keep header-top-row horizontal and compact on mobile */
    .header-clean .header-top-row {
        flex-direction: row; /* Stay horizontal, never column */
        flex-wrap: nowrap; /* Prevent wrapping */
        gap: 4px; /* Minimal gap */
        padding: 8px 12px; /* Reduced padding */
        align-items: center;
        justify-content: space-between;
    }
    
    /* Compact logo on mobile */
    .header-clean .header-logo a {
        font-size: 1rem; /* Reduced from 1.5rem */
    }
    
    /* Compact buttons on mobile */
    .header-clean .header-logout-btn,
    .header-clean .header-account-btn {
        padding: 0.35rem 0.5rem; /* Tighter padding */
        font-size: 0.7rem; /* Smaller text */
    }
    
    /* Show and style mobile menu toggle */
    .header-clean .mobile-menu-toggle {
        display: flex;
        width: 32px;
        height: 32px;
        padding: 0.25rem;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 1px solid rgba(99, 179, 237, 0.3);
        border-radius: 6px;
        color: #63B3ED;
        cursor: pointer;
        flex-shrink: 0;
    }
    
    .header-clean .mobile-menu-toggle:hover {
        background: rgba(99, 179, 237, 0.2);
        border-color: rgba(99, 179, 237, 0.5);
    }
    
    .header-clean .hamburger-icon {
        font-size: 1.1rem;
        line-height: 1;
    }
    
    /* Hide "Logged in as:" text on mobile to save space */
    .header-clean .header-user-text {
        display: none;
    }
    
    /* Tighter spacing in header-user-info */
    .header-clean .header-user-info {
        gap: 4px;
        font-size: 0.8rem;
    }
    
    /* Compact container padding */
    .header-clean .header-container {
        padding: 0;
    }
    
    /* Hide navigation by default on mobile */
    .header-clean .header-nav-row {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        margin-top: 8px;
        padding: 12px 8px;
        border-top: 1px solid var(--header-border, #3A4452);
    }
    
    /* Show navigation when menu is open */
    .header-clean .header-nav-row.nav-open {
        display: flex;
    }
    
    /* Full width nav links on mobile */
    .header-clean .header-nav-link {
        width: 100%;
        text-align: left;
        font-size: 0.9rem;
        padding: 8px 12px;
    }
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: var(--spacing-xs);
    }
    
    .card {
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-sm);
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.375rem; }
    h3 { font-size: 1.125rem; }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }

    /* Even more compact header-clean styles for very small screens */
    .header-clean .header-top-row {
        padding: 6px 8px;
        gap: 2px;
    }
    
    .header-clean .header-logo a {
        font-size: 0.9rem; /* Even smaller logo */
    }
    
    .header-clean .header-logout-btn,
    .header-clean .header-account-btn {
        padding: 0.3rem 0.4rem; /* Very tight padding */
        font-size: 0.65rem; /* Smaller text */
    }
    
    .header-clean .mobile-menu-toggle {
        width: 30px;
        height: 30px;
        padding: 0.2rem;
    }
    
    .header-clean .hamburger-icon {
        font-size: 1rem;
    }
    
    .header-clean .header-user-info {
        gap: 2px;
    }
    
    .header-clean .header-container {
        padding: 0;
    }
    
    .header-clean .header-nav-row {
        flex-direction: column;
        padding: 8px 12px;
        gap: 4px;
    }
    
    .header-clean .header-nav-link {
        font-size: 0.85rem;
        padding: 6px 12px;
    }
}

/* Print Styles */
@media print {
    .header,
    .nav,
    .btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* ========================================
   GLOBAL HEADER STYLES - LIGHT & DARK MODE
   ======================================== */

/* Light Mode (Default) - Original Simple Design */
.global-header {
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    width: 100%;
    position: relative;
    z-index: 100;
}

.global-header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.header-top-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-bottom: 1px solid var(--header-border);
    background-color: var(--header-bg);
    color: var(--text-color);
    width: 100%;
}

.header-logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.header-logo a {
    color: var(--primary-color) !important; /* Keep !important if it's truly needed for overriding framework defaults */
    text-decoration: none !important;
}

.header-user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.9rem;
}

.header-user-text {
    color: var(--text-color);
    font-weight: 500;
}

.header-logout-btn,
.header-account-btn {
    background-color: var(--btn-primary-bg) !important;
    color: var(--btn-primary-text) !important;
    padding: 8px 16px !important;
    border: none !important;
    border-radius: 4px !important;
    font-size: 0.875rem !important;
    font-weight: 500 !important;
    cursor: pointer !important;
    transition: background-color 0.2s ease !important;
    text-decoration: none !important;
    display: inline-block !important;
}

/* Login button - Green styling */
.header-logout-btn {
    background-color: var(--color-success) !important;
    color: white !important;
}

.header-logout-btn:hover {
    background-color: var(--color-success-dark) !important;
}

.header-account-btn {
    background-color: var(--btn-success-bg) !important;
}

.header-account-btn:hover {
    background-color: var(--btn-success-hover) !important;
}

.header-nav-row {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px 20px;
    gap: 30px;
    flex-wrap: wrap;
    background-color: var(--header-bg);
    width: 100%;
}

.header-nav-link {
    text-decoration: none;
    color: var(--nav-link-color);
    font-weight: 500;
    font-size: 1rem;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.header-nav-link:hover {
    background-color: var(--nav-link-hover);
    color: #ffffff;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* Legacy header-clean layout support */
.header-clean {
    width: 100%;
    background: transparent;
    padding: 0;
    margin: var(--spacing-xl) 0 0 0;
    border: none;
    box-shadow: none;
}

.header-clean .header-container {
    background: var(--header-bg, #2D3748);
    border-bottom: 1px solid var(--header-border, #3A4452);
    box-shadow: 0 0.5rem 1.25rem rgba(0, 0, 0, 0.5);
    border-radius: 0.875rem;
    max-width: 940px;
    margin: 0 auto;
    overflow: hidden;
    width: 100%;
}

.header-clean .header-top-row {
    background: linear-gradient(135deg, var(--header-bg, #2D3748) 0%, #4A5568 100%);
    border-bottom: 1px solid var(--header-border, #3A4452);
    padding: 12px 24px;
    color: #E2E8F0;
}

.header-clean .header-logo a {
    color: #63B3ED;
    letter-spacing: 1px;
}

.header-clean .header-user-info {
    gap: 16px;
    font-size: 0.9rem;
}

.header-clean .header-user-text {
    color: #E2E8F0;
    font-weight: 500;
}

.header-clean .header-logout-btn,
.header-clean .header-account-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    text-decoration: none;
}

.header-clean .header-logout-btn {
    background: rgba(99, 179, 237, 0.2);
    border-color: rgba(99, 179, 237, 0.3);
    color: #63B3ED;
}

.header-clean .header-logout-btn:hover {
    background: rgba(99, 179, 237, 0.3);
    border-color: rgba(99, 179, 237, 0.5);
    transform: translateY(-0.0625rem);
    box-shadow: 0 0.25rem 0.75rem rgba(99, 179, 237, 0.3);
}

.header-clean .header-account-btn {
    background: rgba(104, 211, 145, 0.2);
    border-color: rgba(104, 211, 145, 0.3);
    color: #68D391;
}

.header-clean .header-account-btn:hover {
    background: rgba(104, 211, 145, 0.3);
    border-color: rgba(104, 211, 145, 0.5);
    transform: translateY(-0.0625rem);
    box-shadow: 0 0.25rem 0.75rem rgba(104, 211, 145, 0.3);
}

.header-clean .header-nav-row {
    padding: 16px 24px;
    gap: 32px;
    background-color: #4A5568;
}

.header-clean .header-nav-link {
    color: #63B3ED;
    border-radius: 8px;
    padding: 8px 16px;
    transition: all 0.3s ease;
}

.header-clean .header-nav-link:hover {
    background: #5A67D8;
    color: #68D391;
    transform: translateY(-0.0625rem);
    box-shadow: 0 0.25rem 0.75rem rgba(99, 179, 237, 0.3);
}

/* Dark Mode Styles - Based on DarkModeExample.html */
[data-theme="dark"] .global-header {
    background-color: var(--header-bg) !important; /* Much darker background for the fixed bar */
    border-bottom: 1px solid var(--header-border) !important; /* Subtle border at the bottom */
}

[data-theme="dark"] .header-top-row {
    background-color: var(--header-bg) !important; /* Much darker background for the fixed bar */
    border-bottom: 1px solid var(--header-border) !important; /* Subtle border at the bottom */
    color: var(--text-color) !important; /* Soft, light gray for text */
}

[data-theme="dark"] .header-logo a {
    color: var(--primary-color) !important; /* Soft blue for logo text */
}

[data-theme="dark"] .header-user-text {
    color: var(--text-color); /* Soft, light gray for text */
}

[data-theme="dark"] .header-logout-btn {
    background-color: #4ade80 !important; /* Green 400 - exact color requested */
    color: white !important;
    border: 1px solid #4ade80 !important;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

[data-theme="dark"] .header-logout-btn:hover {
    background-color: #22c55e !important; /* Green 500 - darker on hover */
    border-color: #22c55e !important;
    transform: translateY(-1px); /* Slight lift effect */
}

[data-theme="dark"] .header-logout-btn:active {
    transform: translateY(1px); /* Slight press effect */
}

[data-theme="dark"] .header-account-btn {
    background-color: var(--btn-success-bg); /* Soft green for button */
    color: var(--btn-primary-text); /* Dark text for contrast */
    border: none;
    border-radius: 8px;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

[data-theme="dark"] .header-account-btn:hover {
    background-color: var(--btn-success-hover); /* Slightly darker green on hover */
    transform: translateY(-1px); /* Slight lift effect */
}

[data-theme="dark"] .header-account-btn:active {
    transform: translateY(1px); /* Slight press effect */
}

[data-theme="dark"] .header-nav-row {
    background-color: var(--header-bg) !important; /* Darker desaturated blue-gray for nav bar */
}

[data-theme="dark"] .header-nav-link {
    color: var(--nav-link-color); /* Soft blue for nav links */
    padding: 8px 15px;
    border-radius: 8px;
    transition: color 0.3s ease, background-color 0.3s ease;
}

[data-theme="dark"] .header-nav-link:hover {
    color: #ffffff; /* White text on hover for contrast */
    background-color: var(--nav-link-hover); /* Soft green background on hover */
}

/* Responsive adjustments for tablets and smaller desktops */
@media (max-width: 760px) {
    /* Compact container padding */
    .global-header-container {
        padding: 4px 8px; /* Reduced padding */
    }
    
    /* Show and style mobile menu toggle */
    .mobile-menu-toggle {
        display: flex;
        width: 32px; /* Compact sizing */
        height: 32px;
        padding: 0.25rem;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }
    
    .hamburger-icon {
        font-size: 1.1rem; /* Reduced from 1.5rem */
    }
    
    /* Keep header-top-row horizontal and compact on mobile */
    .header-top-row {
        flex-direction: row; /* Stay horizontal, never column */
        flex-wrap: nowrap; /* Prevent wrapping */
        gap: 4px; /* Minimal gap */
        padding: 8px 12px; /* Reduced padding */
        align-items: center;
        justify-content: space-between;
        margin-bottom: 0; /* Remove margin to save space */
    }
    
    /* Compact logo on mobile */
    .header-logo a {
        font-size: 1rem; /* Reduced from larger size */
    }
    
    /* Compact buttons on mobile */
    .header-logout-btn,
    .header-account-btn {
        padding: 0.35rem 0.5rem; /* Tighter padding */
        font-size: 0.7rem; /* Smaller text */
    }
    
    /* Hide "Logged in as:" text on mobile to save space */
    .header-user-text {
        display: none;
    }
    
    /* Tighter spacing in header-user-info */
    .header-user-info {
        gap: 4px;
        font-size: 0.8rem;
    }
    
    .header-nav-row {
        display: none; /* Hide navigation by default on mobile */
        padding: 10px 16px;
        gap: 20px;
    }
    /* Show navigation when menu is open */
    .header-nav-row.nav-open {
        display: flex;
    }
    .header-nav-link {
        font-size: 0.9rem;
        padding: 6px 10px;
    }
    
    [data-theme="dark"] .header-nav-link {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}

/* Responsive adjustments for mobile phones */
@media (max-width: 480px) {
    /* Even more compact header-top-row for very small screens */
    .header-top-row {
        padding: 6px 8px; /* Very tight padding */
        gap: 2px; /* Minimal gap */
    }
    
    /* Even smaller logo */
    .header-logo a {
        font-size: 0.9rem; /* Even smaller */
    }
    
    /* Very compact buttons */
    .header-logout-btn,
    .header-account-btn {
        padding: 0.3rem 0.4rem; /* Very tight padding */
        font-size: 0.65rem; /* Smaller text */
    }
    
    /* Compact hamburger button */
    .mobile-menu-toggle {
        width: 30px;
        height: 30px;
        padding: 0.2rem;
    }
    
    .hamburger-icon {
        font-size: 1rem; /* Smaller icon */
    }
    
    .header-user-info {
        gap: 2px; /* Very tight spacing */
    }
    .header-nav-row {
        display: none; /* Hide navigation by default on mobile */
        flex-direction: column;
        padding: 8px 12px;
        gap: 10px;
    }
    /* Show navigation when menu is open */
    .header-nav-row.nav-open {
        display: flex;
    }
    .header-nav-link {
        font-size: 0.85rem;
        padding: 6px 12px;
    }
    
    [data-theme="dark"] .header-nav-link {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

/* Footer Component */
.site-footer {
    background-color: var(--header-bg);
    color: var(--text-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--header-border);
    font-size: 0.9rem;
}

.site-footer p {
    margin-bottom: var(--spacing-sm);
    color: inherit; /* Inherit color from footer for consistency */
}

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

.site-footer a:hover {
    text-decoration: underline;
}