/* --- Design System & Variables (Fauvism / Matisse Theme) --- */
:root {
    /* Colors - Inspired by "La Danse" & "La Joie de vivre" */
    --bg-body: #fdfbf7;
    /* Warm Canvas */
    --bg-card: #ffffff;
    --bg-header: #0F4C81;
    /* Matisse Blue */

    --text-primary: #1a1a1a;
    /* Ink Black */
    --text-secondary: #4a4a4a;
    --text-accent: #D25F45;
    /* Dance Red */
    --text-header: #ffffff;

    --primary-color: #D25F45;
    /* Dance Red */
    --primary-hover: #b94b32;
    --secondary-color: #4B8B3B;
    /* Hill Green */
    --accent-yellow: #F4D03F;
    /* Sun Yellow */

    --success: #4B8B3B;
    --warning: #F4D03F;
    --danger: #D25F45;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Borders - Bold & Expressive */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --border-color: #1a1a1a;
    /* Strong outlines */
    --border-width: 2px;

    /* Shadows - Sharp & Flat */
    --shadow-sm: 2px 2px 0px rgba(0, 0, 0, 0.1);
    --shadow-md: 4px 4px 0px rgba(0, 0, 0, 1);
    /* Hard shadow */
    --shadow-glow: none;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.01em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

ul {
    list-style: none;
}

/* --- Layout --- */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- Header (Sticky) --- */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--bg-header);
    border-bottom: var(--border-width) solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    /* High z-index for sticky */
    box-shadow: var(--shadow-md);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background-color: var(--accent-yellow);
    border: var(--border-width) solid var(--border-color);
    border-radius: 50%;
    /* Organic shape */
    box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}

.logo-text {
    font-size: 1.8rem;
    color: var(--text-header);
    text-transform: uppercase;
    font-weight: 800;
}

.main-nav ul {
    display: flex;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--bg-header);
    background-color: var(--accent-yellow);
    box-shadow: 2px 2px 0 #000;
    transform: translateY(-2px);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-header);
    font-weight: 600;
}

.avatar {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 2px solid #fff;
}

/* --- Main Content --- */
.content-area {
    flex: 1;
    padding: var(--spacing-xl) var(--spacing-lg);
    max-width: 1000px;
    /* Slightly narrower for readability in accordions */
    margin: 0 auto;
    width: 100%;
}

/* --- Accordions --- */
.accordion-section {
    margin-bottom: var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

.accordion-header {
    background-color: var(--bg-header);
    color: white;
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease;
}

.accordion-header:hover {
    background-color: #0c3b66;
}

.accordion-header h2 {
    color: white;
    margin: 0;
    font-size: 1.5rem;
}

.accordion-icon {
    font-size: 1.5rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.accordion-header.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    display: none;
    /* Hidden by default */
    padding: var(--spacing-md);
    background-color: #fff;
}

/* --- Sub-Accordions --- */
.sub-accordion {
    margin-top: var(--spacing-sm);
    border: 1px solid #ddd;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.sub-accordion-header {
    background-color: #f1f5f9;
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    border-bottom: 1px solid #ddd;
}

.sub-accordion-header:hover {
    background-color: #e2e8f0;
}

.sub-accordion-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--secondary-color);
}

.sub-accordion-content {
    display: none;
    padding: var(--spacing-md);
    background-color: #fdfbf7;
}

/* --- Hero Section (Inside Accordion) --- */
.hero-section {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
}

.hero-section h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--bg-header);
}

.hero-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

/* --- Components --- */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: var(--border-width) solid var(--border-color);
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 4px 4px 0 var(--border-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--border-color);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background-color: var(--bg-card);
    border: 1px solid #eee;
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-accent);
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid #eee;
}

.status {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

.status.done {
    background-color: var(--success);
    color: white;
}

.status.processing {
    background-color: var(--accent-yellow);
    color: var(--text-primary);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--bg-header);
}

/* --- Multimedia Support --- */
.media-container {
    margin: var(--spacing-md) 0;
    border: var(--border-width) solid var(--border-color);
    background-color: #fff;
    padding: var(--spacing-xs);
    box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 2px;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.media-caption {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    background-color: #f8fafc;
    border-top: 1px solid #eee;
    text-align: center;
}

/* --- Footer --- */
.main-footer {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--bg-header);
    color: white;
    font-weight: 500;
    border-top: var(--border-width) solid var(--border-color);
    margin-top: auto;
}

/* --- Back to Top Button --- */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: none;
    /* Hidden by default */
    background-color: var(--primary-color);
    color: white;
    border: var(--border-width) solid var(--border-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 900;
    box-shadow: 4px 4px 0 var(--border-color);
    transition: all 0.3s ease;
}

#back-to-top:hover {
    background-color: var(--primary-hover);
    transform: translateY(-5px);
    box-shadow: 6px 6px 0 var(--border-color);
}