/* ROOT CSS VARIABLES */
:root {
    /* Color Palette - Officer's Briefing Room: Navy & Brass */
    --clr-bg: #f4f1eb;
    --clr-surface: #ffffff;
    --clr-surface-hover: #ede9e1;
    --clr-text: #3d3529;
    --clr-heading: #1a1510;

    --clr-primary: #1b2e4a; /* Deep Navy */
    --clr-primary-light: #2d5aa0;
    --clr-accent: #c8a84e; /* Brass / Antique Gold */
    --clr-accent-hover: #b8952f;
    --clr-sidebar: #1b2e4a; /* Dark navy sidebar */

    --clr-border: #d4cfc5;
    --clr-success: #10b981;
    --clr-danger: #ef4444;

    /* Font — Dignified, authoritative, institutional */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans 3', 'Segoe UI', Tahoma, sans-serif;

    /* Layout */
    --sidebar-width: 280px;
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* DARK MODE VARIABLES */
body.dark-mode {
    --clr-bg: #0d1117;
    --clr-surface: #161b22;
    --clr-surface-hover: #21262d;
    --clr-text: #c9d1d9;
    --clr-heading: #f0f0f0;
    --clr-sidebar: #0d1117;
    --clr-border: #30363d;
    --clr-primary: #4a90d9;
    --clr-primary-light: #6aadee;
    --clr-accent: #d4a843;
    --clr-accent-hover: #c8982e;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
}

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

html {
    scroll-behavior: smooth;
}

/* Removed decorative body-wide noise/texture overlay */

body {
    font-family: var(--font-body);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    display: flex;
    height: 100vh;
    overflow: hidden;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    color: var(--clr-heading);
    font-weight: 700;
}

/* SIDEBAR */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--clr-sidebar);
    border-right: 1px solid rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: all var(--transition-speed);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 2.5rem;
}

.logo-icon {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
}

.sidebar-header h2 {
    font-size: 1.4rem;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.nav-links {
    list-style: none;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: #c9d4e0;
    font-weight: 500;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.nav-links a i {
    width: 20px;
    text-align: center;
    color: var(--clr-accent);
    transition: transform 0.2s ease;
}

.nav-links a:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.nav-links a:hover i {
    transform: scale(1.1);
}

.nav-links a.active {
    background-color: rgba(200, 168, 78, 0.15);
    color: var(--clr-accent);
    box-shadow: none;
    border-left: 3px solid var(--clr-accent);
    padding-left: 13px;
}

.nav-links a.active i {
    color: var(--clr-accent);
}

.theme-toggle {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 12px;
    width: 100%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: #c9d4e0;
    font-family: var(--font-body);
    font-weight: 600;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

/* MAIN CONTENT */
.content-area {
    flex-grow: 1;
    margin-left: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    position: relative;
    scroll-behavior: smooth;
    padding: 2rem 4rem 6rem;
}

/* SECTIONS */
.section-pane {
    min-height: 100vh;
    padding: 4rem 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    display: none;
}

.section-pane.active {
    opacity: 1;
    transform: translateY(0);
    display: block;
    animation: fadeUpIn 0.5s ease forwards;
}

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


.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

/* HERO SECTION */
.hero-container {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.95), rgba(15, 23, 42, 0.98));
    border-radius: 20px;
    padding: 4rem 3rem;
    color: white;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-container::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at top right, rgba(200, 168, 78, 0.2), transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.hero-container::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(30deg, rgba(200, 168, 78, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(200, 168, 78, 0.05) 87.5%),
        linear-gradient(150deg, rgba(200, 168, 78, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(200, 168, 78, 0.05) 87.5%),
        linear-gradient(30deg, rgba(200, 168, 78, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(200, 168, 78, 0.05) 87.5%),
        linear-gradient(150deg, rgba(200, 168, 78, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(200, 168, 78, 0.05) 87.5%);
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px;
    pointer-events: none;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-content .badge {
    background: rgba(200, 168, 78, 0.2);
    color: var(--clr-accent);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
    border: 1px solid rgba(200, 168, 78, 0.4);
}

.hero-title {
    font-size: 3rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: white;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--clr-accent);
    color: var(--clr-heading);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(251, 191, 36, 0.3);
}

/* Hero action button row — keeps all CTAs aligned and wraps gracefully */
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 0.5rem;
}

/* Pre-Test: gold outline (matches accent) */
.btn-primary.btn-pre-test {
    background-color: var(--clr-surface);
    color: var(--clr-accent);
    border: 2px solid var(--clr-accent);
}
.btn-primary.btn-pre-test:hover {
    background-color: var(--clr-accent);
    color: var(--clr-heading);
    box-shadow: 0 10px 15px -3px rgba(200, 168, 78, 0.3);
}

/* Post-Test: red filled — distinct from pre-test so students don't confuse them */
.btn-primary.btn-post-test {
    background-color: var(--clr-danger);
    color: var(--clr-surface);
    border: 2px solid var(--clr-danger);
}
.btn-primary.btn-post-test:hover {
    background-color: #c92e2e;
    border-color: #c92e2e;
    color: var(--clr-surface);
    box-shadow: 0 10px 15px -3px rgba(239, 68, 68, 0.35);
}

/* COURSE CARDS */
.section-heading {
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.course-card {
    background-color: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(27, 46, 74, 0.15);
    border-color: var(--clr-accent);
}

.course-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.course-card:hover::after {
    opacity: 1;
}

.card-icon {
    background-color: rgba(59, 130, 246, 0.1);
    width: 45px;
    height: 45px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary-light);
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.course-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.course-card p {
    font-size: 1rem;
    color: var(--clr-text);
}


/* MODULE STYLES */
.module-header {
    margin-bottom: 3rem;
}

.module-eyebrow {
    color: var(--clr-primary-light);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

.module-title {
    font-size: 2.5rem;
    margin-top: 0.5rem;
}

.glass-panel {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.02);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    position: relative;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 12px;
    right: 12px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(200, 168, 78, 0.3), transparent);
    border-radius: 1px;
}

.glass-panel:hover {
    box-shadow: var(--shadow-md);
}

.glass-panel h2, .glass-panel h3 {
    margin-bottom: 1rem;
    color: var(--clr-heading);
}

.glass-panel p {
    margin-bottom: 1rem;
}

.glass-panel p:last-child {
    margin-bottom: 0;
}

.mt-6 { margin-top: 2rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-3 { margin-top: 1rem; }

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* UI Elements */
.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.text-gold { color: var(--clr-accent-hover); }
.text-blue { color: var(--clr-primary-light); }
.text-green { color: var(--clr-success); }
.text-red { color: var(--clr-danger); }

.text-sm { font-size: 1rem; }

.border-green { border-top: 4px solid var(--clr-success); }
.border-red { border-top: 4px solid var(--clr-danger); }

.info-callout {
    background-color: rgba(59, 130, 246, 0.05);
    border-left: 4px solid var(--clr-primary-light);
    padding: 1.25rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.info-callout i {
    color: var(--clr-primary-light);
    font-size: 1.2rem;
    margin-top: 3px;
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.05);
    border-left-color: var(--clr-accent-hover);
}

.alert-warning i {
    color: var(--clr-accent-hover);
}

.feature-box {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.box-icon {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light));
    color: white;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1.5rem;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

/* RESOURCE CARDS */
a.resource-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

a.resource-card:hover {
    color: inherit;
}

.glass-panel a {
    color: var(--clr-primary-light);
    text-decoration: none;
}

.glass-panel a:hover {
    text-decoration: underline;
}

/* HAMBURGER MENU */
.hamburger {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 200;
    background: var(--clr-primary);
    color: white;
    border: none;
    border-radius: 8px;
    width: 44px;
    height: 44px;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: background-color 0.2s ease;
}

.hamburger:hover {
    background: var(--clr-primary-light);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .content-area {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar {
        transform: translateX(-100%);
        width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .content-area {
        margin-left: 0;
        padding: 1.5rem;
        padding-top: 4rem;
    }

    .grid-2-col {
        grid-template-columns: 1fr;
    }

    .hero-title { font-size: 2.2rem; }
    .module-title { font-size: 2rem; }

    .feature-box {
        flex-direction: column;
    }
}


/* ============================================
   PRESENTATION MODE
   ============================================ */

/* Hide app chrome when presenting */
body.presentation-mode .sidebar,
body.presentation-mode .hamburger,
body.presentation-mode .sidebar-overlay {
    display: none !important;
}

body.presentation-mode .content-area {
    margin-left: 0;
    padding: 0;
    overflow: hidden;
    height: 100vh;
}

body.presentation-mode .section-pane.active {
    padding: 0;
    min-height: auto;
    animation: none;
}

/* Presentation Container */
.presentation-container {
    display: flex;
    height: 100vh;
    width: 100%;
    background-color: var(--clr-bg);
}

/* --- Presentation Sidebar --- */
.pres-sidebar {
    width: 280px;
    min-width: 280px;
    background-color: var(--clr-surface);
    border-right: 1px solid var(--clr-border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: all var(--transition-speed);
}

.pres-sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--clr-border);
}

.pres-module-badge {
    display: inline-block;
    background: var(--clr-accent);
    color: #1a1510;
    padding: 4px 14px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    font-family: var(--font-body);
}

.pres-sidebar-header h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--clr-heading);
}

.pres-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    padding: 8px 14px;
    color: var(--clr-text);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pres-back-btn:hover {
    background-color: var(--clr-surface-hover);
    color: var(--clr-heading);
}

.pres-back-btn:focus-visible {
    outline: 2px solid var(--clr-primary-light);
    outline-offset: 2px;
}

/* Chapter list */
.pres-chapter-list {
    list-style: none;
    flex-grow: 1;
    padding: 0.75rem 0;
    overflow-y: auto;
}

.pres-chapter {
    margin-bottom: 2px;
}

.pres-chapter-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 1.5rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--clr-text);
    cursor: pointer;
    transition: background-color 0.2s ease;
    user-select: none;
}

.pres-chapter-header:hover {
    background-color: var(--clr-surface-hover);
}

.pres-chapter-arrow {
    font-size: 0.65rem;
    transition: transform 0.2s ease;
    color: var(--clr-primary-light);
}

.pres-chapter.expanded .pres-chapter-arrow {
    transform: rotate(90deg);
}

.pres-slide-list {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.pres-chapter.expanded .pres-slide-list {
    max-height: 500px;
}

.pres-slide-item {
    padding: 8px 1.5rem 8px 2.75rem;
    font-size: 0.9rem;
    color: var(--clr-text);
    cursor: pointer;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.pres-slide-item:hover {
    background-color: var(--clr-surface-hover);
    color: var(--clr-heading);
}

.pres-slide-item.active {
    background-color: rgba(200, 168, 78, 0.1);
    color: var(--clr-accent);
    border-left-color: var(--clr-accent);
    font-weight: 600;
}

/* Slide counter in sidebar footer */
.pres-sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--clr-border);
    text-align: center;
}

.pres-slide-counter {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--clr-text);
}

.pres-slide-counter .pres-current {
    color: var(--clr-primary-light);
    font-weight: 700;
}

/* Theme toggle in presentation sidebar */
.pres-theme-toggle {
    background: none;
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    padding: 8px 14px;
    width: 100%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--clr-text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.75rem;
    transition: all 0.2s ease;
}

.pres-theme-toggle:hover {
    background-color: var(--clr-surface-hover);
}

/* --- Main Slide Area --- */
.pres-main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Progress bar */
.pres-progress-bar {
    height: 4px;
    background-color: var(--clr-border);
    flex-shrink: 0;
}

.pres-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 2px 2px 0;
    width: 0%;
    box-shadow: 0 0 8px rgba(200, 168, 78, 0.4);
}

/* Slide area (scrollable) */
.pres-slide-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 2.5rem 3rem;
    scroll-behavior: smooth;
}

/* Individual slides */
.pres-slide {
    display: none;
    max-width: 900px;
    margin: 0 auto;
    animation: presSlideIn 0.4s ease forwards;
}

.pres-slide.active {
    display: block;
}

@keyframes presSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Slide typography — large, accessible */
.pres-slide h2 {
    font-size: 2rem;
    margin-bottom: 1.25rem;
    color: var(--clr-heading);
}

.pres-slide h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--clr-heading);
}

.pres-slide p {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--clr-text);
}

.pres-slide p:last-child {
    margin-bottom: 0;
}

.pres-slide .feature-list {
    font-size: 1.15rem;
    gap: 14px;
}

.pres-slide .feature-list li {
    line-height: 1.6;
}

.pres-slide .glass-panel {
    font-size: 1.1rem;
}

.pres-slide .glass-panel p {
    font-size: 1.1rem;
}

.pres-slide .info-callout {
    font-size: 1.1rem;
}

/* Title slides */
.pres-slide-title {
    text-align: center;
    padding: 3rem 2rem;
}

.pres-slide-title .pres-slide-eyebrow {
    display: inline-block;
    background: var(--clr-accent);
    color: #1a1510;
    padding: 6px 18px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    font-family: var(--font-body);
}

.pres-slide-title h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.pres-slide-title .pres-subtitle {
    font-size: 1.2rem;
    color: var(--clr-text);
    opacity: 0.8;
    margin-bottom: 2rem;
}

.pres-objectives {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

.pres-objectives h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--clr-primary-light);
}

.pres-objectives ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pres-objectives li {
    font-size: 1.1rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.5;
}

.pres-objectives li::before {
    content: "\f058";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--clr-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Stat highlight (for dollar amounts, percentages) */
.pres-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin: 1.5rem 0;
}

.pres-stat-card {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pres-stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
}

.pres-stat-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--clr-primary-light);
    display: block;
    margin-bottom: 0.25rem;
}

@supports (-webkit-background-clip: text) or (background-clip: text) {
    .pres-stat-number {
        background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
}

@media (forced-colors: active) {
    .pres-stat-number {
        background: none;
        -webkit-text-fill-color: unset;
        color: LinkText;
    }
}

.pres-stat-label {
    font-size: 1rem;
    color: var(--clr-text);
    font-weight: 500;
}

/* Discussion slides */
.pres-slide-discussion {
    border-left: 5px solid var(--clr-accent);
    padding-left: 2rem;
}

.pres-discussion-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(200, 168, 78, 0.15);
    color: var(--clr-accent-hover);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(200, 168, 78, 0.3);
}

.pres-slide-discussion h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.pres-discussion-prompt {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.pres-discussion-prompt p {
    font-size: 1.25rem;
    font-style: italic;
    line-height: 1.8;
    color: var(--clr-heading);
}

.pres-discussion-followups {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 1rem;
}

.pres-discussion-followups li {
    font-size: 1.1rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.6;
    color: var(--clr-text);
}

/* Discussion items in sidebar */
.pres-slide-item.discussion-item {
    color: var(--clr-accent-hover);
    font-style: italic;
}

.pres-slide-item.discussion-item.active {
    background-color: rgba(200, 168, 78, 0.1);
    color: var(--clr-accent-hover);
    border-left-color: var(--clr-accent);
}

/* Completion slide */
.pres-slide-completion {
    text-align: center;
    padding: 3rem 2rem;
}

.pres-completion-icon {
    font-size: 4rem;
    color: var(--clr-accent);
    margin-bottom: 1.5rem;
    animation: celebratePulse 1s ease infinite alternate;
}

@keyframes celebratePulse {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

.pres-slide-completion h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.pres-slide-completion .pres-completion-text {
    font-size: 1.2rem;
    max-width: 500px;
    margin: 0 auto 2rem;
}

.pres-completion-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.pres-completion-stat {
    text-align: center;
}

.pres-completion-stat .stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--clr-primary-light);
}

.pres-completion-stat .stat-label {
    font-size: 0.95rem;
    color: var(--clr-text);
}

/* --- Navigation Controls --- */
.pres-nav-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    border-top: 1px solid var(--clr-border);
    background-color: var(--clr-surface);
    flex-shrink: 0;
}

.pres-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pres-nav-btn:focus-visible {
    outline: 2px solid var(--clr-primary-light);
    outline-offset: 2px;
}

.pres-prev {
    background-color: var(--clr-surface-hover);
    color: var(--clr-text);
}

.pres-prev:hover:not(:disabled) {
    background-color: var(--clr-border);
    color: var(--clr-heading);
}

.pres-prev:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pres-next {
    background-color: var(--clr-primary);
    color: white;
}

.pres-next:hover {
    background-color: var(--clr-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.pres-next.pres-finish {
    background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-hover));
    color: var(--clr-heading);
}

/* --- Confetti --- */
#confetti-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
    display: none;
}

#confetti-container.active {
    display: block;
}

.confetti-piece {
    position: absolute;
    top: -10px;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    animation: confettiFall 3s ease-out forwards;
}

@keyframes confettiFall {
    0% { transform: translateY(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* --- Presentation Responsive --- */
@media (max-width: 768px) {
    .pres-sidebar {
        display: none;
    }

    .pres-slide-area {
        padding: 1.5rem;
    }

    .pres-slide h2 {
        font-size: 1.6rem;
    }

    .pres-slide-title h2 {
        font-size: 2rem;
    }

    .pres-slide .grid-2-col {
        grid-template-columns: 1fr;
    }

    .pres-nav-controls {
        padding: 0.75rem 1rem;
    }

    .pres-nav-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }

    .pres-stat-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    .pres-slide {
        animation: none;
    }

    .pres-progress-fill {
        transition: none;
    }

    .pres-completion-icon {
        animation: none;
    }

    .confetti-piece {
        animation: none;
        display: none;
    }
}