:root {
    --bg-color: #111111;
    --bg-surface: #18181A;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --accent: #D4A373; /* Golden/mustard accent */
    --accent-hover: #b5885c;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body.modal-open { overflow: hidden; }

/* Typography Overrides */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

em {
    font-family: var(--font-heading);
    font-style: italic;
    font-weight: 700;
}

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

.day-number, .eyebrow, .evidence-tag, .btn-primary, .btn-secondary, .btn-primary-outline, .logo {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    border-bottom: 1px solid var(--border-color);
    background: rgba(17, 17, 17, 0.9);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-primary-outline {
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.6rem 1.2rem;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary-outline:hover {
    background: var(--accent);
    color: var(--bg-color);
}

/* Hero Section */
.hero {
    padding: 8rem 5% 6rem;
    max-width: 900px;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.eyebrow::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 1px;
    background: var(--accent);
}

.hero-title {
    font-size: 5rem;
    line-height: 1.05;
    margin-bottom: 2.5rem;
}

.hero-description {
    border-left: 2px solid var(--accent);
    padding-left: 2rem;
    margin-bottom: 3.5rem;
}

.hero-description p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.hero-description .subtitle {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-top: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-color);
    padding: 1rem 2rem;
    font-size: 0.9rem;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s ease;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem 2rem;
    font-size: 0.9rem;
    text-decoration: none;
    transition: border-color 0.3s ease;
}

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

/* Syllabus Grid Display */
.syllabus-section {
    padding: 6rem 5%;
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.week-marker {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1rem;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.mt-10 {
    margin-top: 5rem;
}

.course-curriculum {
    max-width: 1200px;
    margin: 0 auto;
}

.day-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.day-card {
    background: rgba(17, 17, 17, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.day-card:hover {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.day-card-header {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    height: 100%;
}

.day-card-header-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.day-card-indicator {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1;
    transition: color 0.3s ease, transform 0.3s ease;
}

.day-card:hover .day-card-indicator {
    color: var(--accent);
    transform: rotate(90deg);
}

.day-number {
    color: var(--accent);
    font-size: 0.85rem;
}

.day-card-title {
    font-size: 1.6rem;
    color: var(--text-primary);
    line-height: 1.3;
    margin-top: 0.5rem;
}

/* Hide raw data natively on grid */
.day-card-content {
    display: none;
}


/* --- THE CENTER PEEK BLOB MODAL --- */
.center-peek-modal {
    position: fixed; 
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0; 
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.center-peek-modal.active {
    opacity: 1; pointer-events: auto;
}

/* The reduced screen blob */
.center-blob {
    width: 60vw;
    height: 75vh;
    max-width: 950px;
    background: var(--bg-surface);
    border: 1px solid rgba(212, 163, 115, 0.5); /* subtle mustard tint border */
    border-radius: 12px;
    box-shadow: 0 40px 100px rgba(0,0,0,0.8);
    display: flex; 
    flex-direction: column;
    transform: scale(0.95) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.center-peek-modal.active .center-blob {
    transform: scale(1) translateY(0);
}

.blob-header {
    padding: 1.5rem 3rem;
    border-bottom: 1px solid var(--border-color);
    display: flex; 
    justify-content: flex-end;
}

.close-btn {
    background: transparent; 
    border: 1px solid var(--accent); color: var(--accent);
    font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.1em;
    padding: 0.5rem 1rem; border-radius: 4px; cursor: pointer; transition: all 0.3s ease;
}
.close-btn:hover { background: var(--accent); color: var(--bg-color); }

.blob-content {
    padding: 3rem 4rem 6rem; 
    overflow-y: auto; 
    flex: 1;
}

/* Internal formatting for the blob text flow */
.blob-content .day-card-title { 
    font-size: 3rem; 
    color: var(--text-primary); 
    margin-bottom: 2rem; 
    margin-top: 1rem; 
    line-height: 1.1;
}
.blob-content p { 
    font-size: 1.15rem; 
    color: var(--text-secondary); 
    margin-bottom: 1.5rem; 
    line-height: 1.7; 
}
.blob-content strong { color: var(--text-primary); }

.evidence-tag { 
    color: var(--accent); 
    font-family: var(--font-mono); 
    font-size: 0.85rem; 
    letter-spacing: 0.1em;
    margin-bottom: 1rem; 
    display: block; 
}

.blob-content .evidence-box { 
    margin: 3rem 0; 
    padding: 2.5rem; 
    border: 1px dashed var(--accent); 
    background: rgba(212, 163, 115, 0.05); 
    border-radius: 6px; 
}

.blob-content .solution-box { 
    margin: 3rem 0; 
    padding: 2.5rem; 
    border: 1px solid rgba(212, 163, 115, 0.3); 
    background: rgba(17,17,17,0.5); 
    border-radius: 6px; 
}

/* CTA & Bonuses */
.cta-section {
    padding: 8rem 5%;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.cta-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.cta-section > p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
}

.bonus-box {
    margin: 6rem auto 0;
    max-width: 600px;
    text-align: left;
    padding: 3rem;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
}

.bonus-box h4 {
    font-size: 2rem;
    margin: 1rem 0;
}

footer {
    text-align: center;
    padding: 3rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: var(--font-mono);
}

@media (max-width: 768px) {
    .center-blob { width: 90vw; height: 90vh; }
    .blob-content { padding: 2rem; }
    .blob-content .day-card-title { font-size: 2rem; }
    .hero-title { font-size: 3.5rem; }
    .hero-actions { flex-direction: column; }
    .btn-secondary { text-align: center; }
    .day-card-title { font-size: 1.5rem; }
    .section-header h2 { font-size: 2.5rem; }
}