/*
 * Global Stylesheet for MMC BCA Question Bank
 *
 * This file contains all common CSS styles applied across multiple pages.
 * It's built specifically for the HTML structures provided, starting with index.html.
 */

/* --- Google Fonts Import (Ensure these are linked in your HTML <head> before this stylesheet) --- */
/* font-family: 'Inter', sans-serif; (for body text) */
/* font-family: 'Montserrat', sans-serif; (for headings) */

/* --- CSS Variables (Custom Properties) --- */
:root {
    /* Colors */
    --primary-color: #4A90E2;        /* A vibrant, professional blue */
    --primary-dark: #357ABD;         /* Darker blue for hover states */
    --secondary-color: #50C878;      /* A fresh green for success/upload */
    --secondary-dark: #3DAF62;       /* Darker green for hover */
    --danger-color: #E25858;         /* A clear red for delete/logout */
    --danger-dark: #C94C4C;          /* Darker red for hover */
    --background-light: #F8F9FA;     /* Very light grey/off-white background */
    --card-background: #FFFFFF;      /* Pure white for main content cards */
    --text-color: #343A40;           /* Dark charcoal for general text */
    --light-text-color: #6C757D;     /* Muted grey for secondary text */
    --border-color: #E0E0E0;         /* Light grey for general borders */
    --accent-light-bg: #EAF4FF;      /* Very light blue accent background */
    --accent-dark-bg: #F0F5F8;       /* Slightly darker light blue accent background */
    --shadow-color: rgba(0, 0, 0, 0.08); /* Unified shadow color */

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Border Radius */
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;

    /* Box Shadows */
    --box-shadow-light: 0 4px 12px var(--shadow-color);
    --box-shadow-medium: 0 8px 25px var(--shadow-color);
    --box-shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.12); /* For interactive elements */
}

/* --- Base Body & Typography Styles --- */
body {
    font-family: 'Inter', sans-serif; /* Modern sans-serif for body */
    background-color: var(--background-light);
    color: var(--text-color);
    line-height: 1.7; /* Improved readability */
    margin: 0;
    padding: 0; /* Remove padding from body as sections will handle it */
    box-sizing: border-box; /* Ensures padding is included in element's total width/height */
    overflow-x: hidden; /* Prevent horizontal scroll on small devices */
    display: block; /* Ensure sections stack vertically */
    min-height: 100vh;
}

/* --- Global Headings --- */
h1 {
    font-family: 'Montserrat', sans-serif; /* Distinct font for main heading */
    color: var(--primary-color);
    margin-bottom: var(--spacing-xxl);
    font-size: 2.8em; /* Larger main heading */
    font-weight: 700; /* Extra bold */
    letter-spacing: -0.03em; /* Tighten letter spacing for headings */
    text-shadow: 1px 1px 2px rgba(0,0,0,0.05); /* Subtle text shadow */
    text-align: center; /* Default center align headings */
}

h2, h3 {
    font-family: 'Montserrat', sans-serif; /* Consistent heading font */
    color: var(--primary-dark);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color); /* Subtle separator */
    padding-bottom: var(--spacing-sm);
    font-size: 2em; /* Larger sub-headings */
    font-weight: 600;
    letter-spacing: -0.02em;
    text-align: center; /* Default center align headings */
}

/* --- Common Button Styles (Used across all pages for consistency) --- */
.action-btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    color: white;
    min-width: 140px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-sizing: border-box; /* Include padding/border in width */
}

.action-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

/* Specific button colors */
.primary-btn {
    background-color: var(--primary-color);
}
.primary-btn:hover {
    background-color: var(--primary-dark);
}

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

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

/* --- Header Section (index.html) --- */
.main-header {
    background-color: var(--card-background);
    box-shadow: var(--box-shadow-light);
    padding: var(--spacing-sm) var(--spacing-xxl);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: slideDownFadeIn 0.8s ease-out forwards;
    width: 100%; /* Ensure header spans full width */
    box-sizing: border-box;
}

@keyframes slideDownFadeIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    margin-right: var(--spacing-xl);
}
.logo img {
    height: 50px;
    margin-right: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}
.logo h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6em;
    color: var(--primary-dark);
    margin: 0;
    letter-spacing: -0.01em;
    text-shadow: none;
    text-align: left; /* Override global h1 center align */
}

/* Main Navigation */
.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}
.main-nav ul li {
    margin: 0 var(--spacing-md);
}
.main-nav ul li:last-child {
    margin-right: 0;
}
.main-nav .nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 1em;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: color 0.3s ease, background-color 0.3s ease;
    border-radius: var(--border-radius-sm);
}
.main-nav .nav-link:hover {
    color: var(--primary-color);
    background-color: var(--accent-light-bg);
}
.main-nav .nav-button {
    margin-left: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9em;
    min-width: unset;
    text-transform: capitalize;
    letter-spacing: normal;
    transform: none;
    box-shadow: none;
}
.main-nav .nav-button:hover {
    transform: none;
    box-shadow: none;
    opacity: 0.9;
}


/* --- Tagline Section (index.html - NEW) --- */
.tagline-section {
    background-color: var(--secondary-color);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    font-size: 1.3em;
    font-weight: 500;
    letter-spacing: 0.05em;
    box-shadow: var(--box-shadow-light);
    margin-top: var(--spacing-md); /* Space below header */
    animation: fadeIn 1s ease-out forwards;
}
.tagline-section p {
    margin: 0; /* Remove default paragraph margin */
}


/* --- Hero Section (index.html) --- */
.hero-section {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, #6A5ACD 100%);
    color: white;
    text-align: left;
    min-height: 500px;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    animation: slideUpFadeIn 1s ease-out forwards;
    margin: var(--spacing-xxl) auto;
    max-width: 1200px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
}

@keyframes slideUpFadeIn {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}


.hero-text {
    flex: 1;
    min-width: 300px;
    max-width: 600px;
    padding-left: var(--spacing-lg);
    box-sizing: border-box;
}
.hero-text h1 {
    color: white;
    font-size: 3.5em;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 5px rgba(0,0,0,0.2);
    text-align: left;
}
.hero-text h2 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.8em;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    border-bottom: none;
    padding-bottom: 0;
    text-align: left;
}
.hero-text p {
    font-size: 1.2em;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.8);
}
.hero-button {
    background-color: var(--secondary-color);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1em;
    font-weight: 700;
    border-radius: var(--border-radius-md);
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}
.hero-button:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.hero-image {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-right: var(--spacing-lg);
    box-sizing: border-box;
}
.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
    transition: transform 0.5s ease;
}
.hero-image img:hover {
    transform: scale(1.02);
}


/* --- Footer Section (index.html) --- */
.main-footer {
    background-color: var(--text-color);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    font-size: 0.9em;
    margin-top: var(--spacing-xxl);
    width: 100%;
    box-sizing: border-box;
}
.main-footer p {
    margin: var(--spacing-xs) 0;
}

/* --- Login Page Styles (login.php) --- */

/* Apply this class to the body tag of login.php: <body class="login-body"> */
body.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, #6A5ACD 100%); /* Same gradient as hero */
    padding: var(--spacing-lg);
    overflow-y: auto; /* Allow scroll if content is taller than viewport */
}

.login-container {
    background-color: var(--card-background);
    padding: var(--spacing-xxl) var(--spacing-xl); /* Increased padding */
    border-radius: var(--border-radius-lg); /* Larger border radius */
    box-shadow: var(--box-shadow-medium);
    text-align: center;
    width: 100%;
    max-width: 480px; /* Slightly wider */
    box-sizing: border-box;
    animation: fadeInScaleUp 0.6s cubic-bezier(0.68, -0.55, 0.27, 1.55) forwards; /* More bouncy animation */
    transition: box-shadow 0.3s ease; /* Smooth shadow transition */
}

.login-container:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2); /* Enhanced hover shadow */
}

@keyframes fadeInScaleUp {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-container h2 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    font-size: 2.2em; /* Slightly larger heading */
    font-weight: 700; /* Bolder heading */
    border-bottom: none;
    padding-bottom: 0;
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600; /* Bolder labels */
    color: var(--text-color);
    font-size: 1em; /* Slightly larger font size */
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    color: var(--text-color);
    background-color: var(--accent-dark-bg); /* Slightly darker background for inputs */
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    box-sizing: border-box;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--accent-light-bg); /* More prominent focus ring */
    background-color: white; /* White background on focus */
}

/* Apply primary button style to login submit button */
.form-group input[type="submit"] {
    width: 100%;
    margin-top: var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

.form-group input[type="submit"]:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px); /* Match hero button lift */
    box-shadow: var(--box-shadow-hover);
}

/* --- Message Container Styling (for server-side messages) --- */
.message-container {
    padding: 15px 20px;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    line-height: 1.4;
    word-wrap: break-word; /* Ensures long messages wrap */
    text-align: center; /* Center the message content */
}

.message-container ul {
    margin: 0;
    padding: 0;
    list-style: none; /* Removes bullet points for a cleaner look */
}

.message-container ul li {
    margin-bottom: 5px;
    padding-left: 0; /* Align text to the left */
}

/* --- Error Message Specific Styling (for server-side error messages) --- */
.message-container.error-message {
    background-color: #ffe0e0; /* Light red background */
    color: #cc0000; /* Dark red text */
    border: 1px solid #ff4d4d; /* Red border */
    animation: fadeIn 0.5s ease-out; /* Add animation for active state */
}

/* Optional: Add an icon or symbol before error list items */
.message-container.error-message ul li::before {
    content: "✖ "; /* Red 'X' or other symbol */
    color: #cc0000;
    font-weight: bold;
    margin-right: 8px;
}

/* --- Success Message Specific Styling (for server-side success messages) --- */
.message-container.success-message {
    background-color: #e0ffe0; /* Light green background */
    color: #008000; /* Dark green text */
    border: 1px solid #4dff4d; /* Green border */
    font-weight: 500;
    animation: fadeIn 0.5s ease-out;
}

/* Optional: Add an icon or symbol before success list items */
.message-container.success-message p::before {
    content: "✓ "; /* Green checkmark or other symbol */
    color: #008000;
    font-weight: bold;
    margin-right: 8px;
}


/* --- Styles for Client-Side Validation Feedback (Green/Red Ticks) --- */
/* These are the styles for your password/username guidance lists */
.password-guidance ul,
.username-guidance ul {
    list-style: none; /* Remove default bullets */
    padding: 0;
    margin: 5px 0 10px 0; /* Some spacing */
    font-size: 0.9em;
}

.password-guidance ul li,
.username-guidance ul li {
    padding-left: 20px; /* Space for the icon */
    position: relative; /* For absolute positioning of the icon */
    color: #555; /* Default text color */
    margin-bottom: 3px;
    display: flex; /* Ensures icon and text are on the same line */
    align-items: center; /* Vertically align icon and text */
}

.password-guidance ul li::before,
.username-guidance ul li::before {
    content: '•'; /* Default bullet, will be overridden by valid/invalid */
    position: absolute;
    left: 0;
    color: #888; /* Default color for bullet */
    font-weight: bold;
}

.password-guidance ul li.valid,
.username-guidance ul li.valid {
    color: var(--secondary-dark); /* Green for valid criteria */
}

.password-guidance ul li.invalid,
.username-guidance ul li.invalid {
    color: var(--danger-dark); /* Red for invalid criteria */
}

.password-guidance ul li.valid::before,
.username-guidance ul li.valid::before {
    content: '✓'; /* Checkmark for valid */
    color: var(--secondary-dark);
}

.password-guidance ul li.invalid::before,
.username-guidance ul li.invalid::before {
    content: '✖'; /* X mark for invalid */
    color: var(--danger-dark);
}

/* Styles for the "Confirm Passwords Don't Match" error */
/* This specific error message is shown by JavaScript directly next to the input */
.confirm-password-error-message { /* A more specific class name to avoid conflict */
    color: var(--danger-dark); /* Red text */
    font-size: 0.85em;
    margin-top: 5px;
    text-align: left;
    display: block; /* Ensure it's always visible if text is present */
}


.signup-link {
    margin-top: var(--spacing-lg);
    font-size: 0.95em;
    color: var(--light-text-color);
}

.signup-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* --- Register Page Styles (register.html or register.php) --- */

/* Apply this class to the body tag of register.html/register.php: <body class="register-body"> */
body.register-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #6A5ACD 0%, var(--primary-color) 100%); /* Slightly different gradient for variety */
    padding: var(--spacing-lg);
    overflow-y: auto; /* Allow scroll if content is taller than viewport, important for longer forms */
}

.register-container {
    background-color: var(--card-background);
    padding: var(--spacing-xxl) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
    text-align: center;
    width: 100%;
    max-width: 550px; /* Slightly wider for more input fields */
    box-sizing: border-box;
    animation: fadeInScaleUp 0.7s cubic-bezier(0.68, -0.55, 0.27, 1.55) forwards; /* Same bouncy animation */
    transition: box-shadow 0.3s ease;
}

.register-container:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.register-container h2 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    font-size: 2.2em;
    font-weight: 700;
    border-bottom: none;
    padding-bottom: 0;
    text-align: center;
}

/* Reusing form-group, input, label styles from login page */
/* The styles for .form-group, input[type="text"], input[type="password"], etc.,
    and .form-group input[type="submit"] are already defined globally or in the
    login section and will apply to the register form as well, ensuring consistency. */

.login-link {
    margin-top: var(--spacing-lg);
    font-size: 0.95em;
    color: var(--light-text-color);
}

.login-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.login-link a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* --- Dashboard Page Styles (dashboard.php) --- */

/* Apply this class to the body tag of dashboard.php: <body class="dashboard-body"> */
body.dashboard-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    /* --- MODIFIED: Changed background to match login page gradient --- */
    background: linear-gradient(135deg, var(--primary-color) 0%, #6A5ACD 100%);
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.dashboard-container {
    background-color: var(--card-background);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
    text-align: center;
    width: 100%;
    max-width: 900px; /* Wider for dashboard content */
    margin: var(--spacing-xxl) auto; /* Top/bottom margin, auto left/right */
    box-sizing: border-box;
    animation: fadeIn 0.8s ease-out forwards; /* Simple fade in */
}

.dashboard-container h1 {
    font-size: 2.5em; /* Slightly smaller than hero h1 */
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    text-align: center; /* Override global h1 if necessary */
    border-bottom: none; /* Remove border from dashboard h1 */
}

.dashboard-container p {
    font-size: 1.1em;
    color: var(--light-text-color);
    margin-bottom: var(--spacing-xl);
}

.info-card {
    background-color: var(--accent-light-bg); /* Light blue background */
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
    text-align: left;
    box-shadow: var(--box-shadow-light);
    animation: slideUpFadeIn 0.8s ease-out forwards; /* Subtle animation for info card */
    animation-delay: 0.2s; /* Delay slightly after main container */
    opacity: 0; /* Start hidden for animation */
}

.info-card p {
    margin: var(--spacing-xs) 0;
    font-size: 1em;
    color: var(--text-color);
}

.info-card strong {
    color: var(--primary-dark);
}

.filter-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive columns */
    gap: var(--spacing-xl); /* Gap between sections */
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px dashed var(--border-color); /* Separator */
    text-align: left; /* Align filter groups left */
}

.filter-group {
    margin-bottom: var(--spacing-md);
}

.filter-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.05em;
}

.filter-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    color: var(--text-color);
    background-color: var(--accent-dark-bg);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    box-sizing: border-box;
    -webkit-appearance: none; /* Remove default arrow on select */
    -moz-appearance: none;
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20256%20256%22%3E%3Cpath%20fill%3D%22%236C757D%22%20d%3D%22M208.5%2089.5L128%20169.1l-80.5-79.6c-4.7-4.7-12.3-4.7-17%200l-4.7%204.7c-4.7%204.7-4.7%2012.3%200%2017l80.5%2079.6c4.7%204.7%2012.3%204.7%2017%200l80.5-79.6c4.7-4.7%204.7-12.3%200-17l-4.7-4.7z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 12px;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--accent-light-bg);
    background-color: white;
}

/* Container for results */
#qb-results-container,
#syllabus-results-container {
    background-color: var(--accent-dark-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    min-height: 120px; /* Min height to prevent jumping */
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    display: flex; /* For centering initial text */
    justify-content: center; /* For centering initial text */
    align-items: center; /* For centering initial text */
    flex-direction: column; /* For vertical stacking of initial text */
    color: var(--light-text-color);
    font-style: italic;
}

#qb-results-container ul,
#syllabus-results-container ul {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%; /* Ensure list takes full width of container */
}

.download-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-xs);
    border-bottom: 1px dashed var(--border-color);
    transition: background-color 0.2s ease;
    flex-wrap: wrap; /* Allow wrapping on small screens */
}

.download-list-item:last-child {
    border-bottom: none;
}

.download-list-item:hover {
    background-color: var(--accent-light-bg);
}

.download-list-item strong {
    color: var(--text-color);
    margin-right: var(--spacing-md); /* Space between name and button */
}

.download-list-item a {
    background-color: var(--secondary-color);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-size: 0.9em;
    transition: background-color 0.3s ease, transform 0.2s ease;
    flex-shrink: 0; /* Prevent button from shrinking */
}

.download-list-item a:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    justify-content: center; /* Center the checkbox */
}

.checkbox-group input[type="checkbox"] {
    margin-right: var(--spacing-xs);
    width: 18px; /* Standard size */
    height: 18px;
    accent-color: var(--primary-color); /* Native checkbox color */
    cursor: pointer;
}

.checkbox-group label {
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
}

/* Syllabi section (initially hidden) */
#syllabus-section-wrapper {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px dashed var(--border-color);
    text-align: left;
}

/* Dashboard action buttons */
.logout-btn { /* Reusing logout-btn for manage_questions as well */
    display: inline-block;
    margin-top: var(--spacing-xxl);
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 160px; /* Ensure buttons are a decent size */
}

.logout-btn:first-of-type { /* Style for Manage Questions */
    background-color: var(--primary-color);
}
.logout-btn:first-of-type:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

.logout-btn:last-of-type { /* Style for Logout */
    background-color: var(--danger-color);
}
.logout-btn:last-of-type:hover {
    background-color: var(--danger-dark);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}


/* --- Responsive Adjustments --- */

/* For screens smaller than 992px (e.g., tablets and smaller desktops) */
@media (max-width: 992px) {
    h1 { font-size: 2.2em; }
    h2, h3 { font-size: 1.8em; }

    /* Header */
    .main-header { padding: var(--spacing-sm) var(--spacing-lg); }
    .header-content { flex-direction: column; align-items: center; }
    .logo { margin-bottom: var(--spacing-md); margin-right: 0; }
    .main-nav ul { margin-top: var(--spacing-sm); flex-direction: column; }
    .main-nav ul li { margin: var(--spacing-xs) 0; }
    .main-nav .nav-button { margin-left: 0; margin-top: var(--spacing-sm); }

    /* Hero Section */
    .hero-section {
        flex-direction: column-reverse; /* Image above text on mobile */
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-md);
        min-height: auto;
        border-radius: var(--border-radius-md);
        margin: var(--spacing-xl) auto;
    }
    .hero-text { min-width: unset; max-width: 100%; padding-left: 0; }
    .hero-text h1 { font-size: 2.5em; text-align: center; }
    .hero-text h2 { font-size: 1.5em; text-align: center; }
    .hero-image { margin-bottom: var(--spacing-xl); max-width: 80%; padding-right: 0; }
    .hero-button { width: 80%; max-width: 300px; }

    /* Login & Register Pages */
    .login-container, .register-container {
        padding: var(--spacing-xl); /* Reduce padding on smaller screens */
        margin: var(--spacing-xl) auto; /* Adjust margin */
        border-radius: var(--border-radius-md);
    }

    /* Dashboard */
    .dashboard-container {
        padding: var(--spacing-xl);
        margin: var(--spacing-xl) auto;
        border-radius: var(--border-radius-md);
    }
    .filter-section {
        grid-template-columns: 1fr; /* Single column on smaller screens */
    }
    .logout-btn {
        min-width: unset; /* Allow buttons to shrink */
        width: 80%; /* Occupy more width */
        margin: var(--spacing-md) auto; /* Center buttons */
        display: block; /* Stack buttons vertically */
    }
}

/* For screens smaller than 768px (e.g., larger phones and small tablets) */
@media (max-width: 768px) {
    body { padding: var(--spacing-xs); } /* Reduce overall body padding */
    h1 { font-size: 1.8em; margin-bottom: var(--spacing-xl); }
    h2, h3 { font-size: 1.4em; margin-top: var(--spacing-xl); }

    .login-container, .register-container, .dashboard-container {
        padding: var(--spacing-lg);
        margin: var(--spacing-lg) auto;
        border-radius: var(--border-radius-md);
    }
    .form-group input[type="text"],
    .form-group input[type="password"],
    .form-group input[type="email"],
    .form-group input[type="tel"],
    .form-group select {
        padding: var(--spacing-sm);
    }

    .action-btn, .form-group input[type="submit"] {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9em;
        min-width: 100px;
    }

    .tagline-section { font-size: 1.1em; padding: var(--spacing-sm) var(--spacing-md); }
}

/* For very small screens (e.g., phones) */
@media (max-width: 480px) {
    .login-container, .register-container, .dashboard-container {
        padding: var(--spacing-md);
    }
    h1 { font-size: 1.6em; }
    h2, h3 { font-size: 1.2em; }
    .tagline-section { font-size: 1em; padding: var(--spacing-sm); }

    /* Hero Section */
    .hero-text h1 { font-size: 2em; }
    .hero-text h2 { font-size: 1.2em; }
    .hero-text p { font-size: 1em; }
    .hero-button { font-size: 1em; padding: var(--spacing-sm) var(--spacing-lg); }

    /* Buttons */
    .action-btn, .form-group input[type="submit"], .logout-btn {
        width: 100%; /* Full width buttons */
        margin-bottom: var(--spacing-sm);
        margin-right: 0;
        margin-left: 0;
    }

}
/* --- About Page Styles (about.html) --- */

/* Apply this class to the body tag of about.html: <body class="about-body"> */
body.about-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    /* --- MODIFIED: Changed background to match login page gradient --- */
    background: linear-gradient(135deg, var(--primary-color) 0%, #6A5ACD 100%);
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.about-container {
    background-color: var(--card-background);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
    text-align: center;
    width: 100%;
    max-width: 800px; /* Adjust width as needed */
    margin: var(--spacing-xxl) auto;
    box-sizing: border-box;
    animation: fadeIn 0.8s ease-out forwards;
}

.about-container h1 {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    border-bottom: none; /* Remove border if you don't want it here */
    text-align: center;
}

.about-container h2 {
    font-size: 1.6em;
    color: var(--primary-dark);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
    text-align: center;
}

.about-container p {
    font-size: 1.1em;
    color: var(--text-color);
    line-height: 1.8;
    text-align: left; /* Align paragraph text left for readability */
    margin-bottom: var(--spacing-lg);
}

/* Responsive adjustments for about page */
@media (max-width: 768px) {
    .about-container {
        padding: var(--spacing-xl);
        margin: var(--spacing-xl) auto;
    }
    .about-container h1 { font-size: 2em; }
    .about-container h2 { font-size: 1.4em; }
    .about-container p { font-size: 1em; }
}

/* --- Contact Page Styles (contact.html) --- */

/* Apply this class to the body tag of contact.html: <body class="contact-body"> */
body.contact-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    /* --- MODIFIED: Changed background to match login page gradient --- */
    background: linear-gradient(135deg, var(--primary-color) 0%, #6A5ACD 100%);
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.contact-container {
    background-color: var(--card-background);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-medium);
    text-align: center; /* Center main content text */
    width: 100%;
    max-width: 800px; /* Adjust width as needed */
    margin: var(--spacing-xxl) auto;
    box-sizing: border-box;
    animation: fadeIn 0.8s ease-out forwards;
}

.contact-container h1 {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    border-bottom: none; /* Remove border if you don't want it here */
    text-align: center;
}

.contact-intro {
    font-size: 1.1em;
    color: var(--light-text-color);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-details {
    display: flex;
    flex-wrap: wrap; /* Allow items to wrap on smaller screens */
    justify-content: center; /* Center contact items */
    gap: var(--spacing-lg); /* Space between items */
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px dashed var(--border-color);
}

.contact-item {
    background-color: var(--accent-light-bg); /* Light accent background for each item */
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--primary-color);
    box-shadow: var(--box-shadow-light);
    flex: 1; /* Allow items to grow/shrink */
    min-width: 280px; /* Minimum width for each item */
    text-align: left; /* Align text within each item to the left */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-medium);
}
   