/* ===================================================
   FORMATION CLAUDE CODE — Skills & Agents
   Premium Presentation Style
   =================================================== */

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --accent: #F97316;
    --accent-light: #FB923C;
    --green: #22C55E;
    --green-dark: #16A34A;
    --red: #EF4444;
    --purple: #A855F7;
    --blue: #3B82F6;
    --orange: #F97316;
    --bg-dark: #0B0B14;
    --bg-slide: #0F0F1A;
    --bg-card: #16162A;
    --bg-card-hover: #1E1E38;
    --bg-code: #1A1A2E;
    --text: #E2E8F0;
    --text-muted: #94A3B8;
    --text-dim: #64748B;
    --white: #FFFFFF;
    --border: rgba(255,255,255,0.08);
    --border-light: rgba(255,255,255,0.12);
    --gradient: linear-gradient(135deg, var(--primary-light), var(--accent));
    --gradient-text: linear-gradient(135deg, #818CF8, #F97316);
    --gradient-green: linear-gradient(135deg, #22C55E, #3B82F6);
    --gradient-purple: linear-gradient(135deg, #A855F7, #6366F1);
    --shadow-lg: 0 25px 50px -12px rgba(0,0,0,0.5);
    --shadow-card: 0 4px 30px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 40px rgba(99,102,241,0.15);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

html { font-size: 16px; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    background: rgba(99,102,241,0.15);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85em;
    color: var(--primary-light);
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------- PROGRESS BAR ---------- */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.05);
    z-index: 1000;
}

.progress-fill {
    height: 100%;
    background: var(--gradient);
    width: 0%;
    transition: width 0.4s ease;
    border-radius: 0 2px 2px 0;
}

/* ---------- SLIDE COUNTER ---------- */
.slide-counter {
    position: fixed;
    bottom: 24px;
    right: 24px;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.85rem;
    color: var(--text-dim);
    z-index: 100;
    letter-spacing: 0.05em;
}

/* ---------- NAVIGATION ARROWS ---------- */
.nav-arrow {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: rgba(15,15,26,0.8);
    backdrop-filter: blur(10px);
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-arrow:hover {
    background: var(--primary-dark);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.nav-prev { left: 20px; }
.nav-next { right: 20px; }

.nav-arrow:disabled {
    opacity: 0.2;
    cursor: default;
    pointer-events: none;
}

/* ---------- DOT NAVIGATION ---------- */
.dot-nav {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 100;
    padding: 8px 16px;
    background: rgba(15,15,26,0.7);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    border: 1px solid var(--border);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
    cursor: pointer;
    transition: var(--transition);
    opacity: 0.4;
}

.dot:hover {
    opacity: 0.8;
    background: var(--primary-light);
}

.dot.active {
    opacity: 1;
    background: var(--primary);
    width: 24px;
    border-radius: 4px;
}

/* ---------- SLIDES CONTAINER ---------- */
.slides-container {
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* ---------- SLIDE BASE ---------- */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-slide);
    opacity: 0;
    transform: translateX(60px);
    pointer-events: none;
    transition: opacity 0.5s ease, transform 0.5s ease;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 60px 100px 80px;
}

.slide.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.slide.exit-left {
    opacity: 0;
    transform: translateX(-60px);
}

.slide-content {
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
}

/* ---------- SLIDE HEADER ---------- */
.slide-header {
    margin-bottom: 40px;
}

.slide-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    color: var(--primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.slide-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--white);
}

/* ---------- COVER SLIDE ---------- */
.slide-cover {
    text-align: center;
    overflow: hidden;
}

.cover-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cover-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.25);
    color: var(--primary-light);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 32px;
    animation: fadeInDown 0.8s ease 0.2s both;
}

.cover-title {
    font-size: 5rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.03em;
    margin-bottom: 8px;
    animation: fadeInDown 0.8s ease 0.4s both;
}

.cover-subtitle {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    animation: fadeInDown 0.8s ease 0.6s both;
}

.cover-details {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 40px;
    animation: fadeInDown 0.8s ease 0.8s both;
}

.cover-details i {
    color: var(--primary-light);
}

.cover-sep {
    color: var(--text-dim);
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99,102,241,0.4);
}

.btn-start {
    animation: fadeInUp 0.8s ease 1s both;
}

/* ---------- BACKGROUND DECORATION ---------- */
.cover-bg-decoration, .section-bg-decoration {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.bg-circle-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -150px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.bg-circle-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.bg-circle-3 {
    width: 300px;
    height: 300px;
    background: var(--purple);
    top: 40%;
    left: 50%;
    animation: float 12s ease-in-out infinite 2s;
}

.bg-circle-section-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    left: -200px;
    animation: float 10s ease-in-out infinite;
}

.bg-circle-section-2 {
    width: 500px;
    height: 500px;
    background: var(--accent);
    bottom: -200px;
    right: -200px;
    animation: float 12s ease-in-out infinite reverse;
}

/* ---------- CARDS ---------- */
.cards-grid {
    display: grid;
    gap: 20px;
}

.cards-4 { grid-template-columns: repeat(4, 1fr); }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.cards-2x2 { grid-template-columns: repeat(2, 1fr); }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: var(--transition);
}

.card-hover:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.card h3 {
    font-size: 1.1rem;
    color: var(--white);
    margin-bottom: 8px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 16px;
    background: rgba(99,102,241,0.1);
    color: var(--primary-light);
}

.card-icon.icon-blue { background: rgba(59,130,246,0.1); color: var(--blue); }
.card-icon.icon-purple { background: rgba(168,85,247,0.1); color: var(--purple); }
.card-icon.icon-green { background: rgba(34,197,94,0.1); color: var(--green); }
.card-icon.icon-orange { background: rgba(249,115,22,0.1); color: var(--orange); }

.card-subtitle {
    color: var(--text-dim) !important;
    font-size: 0.8rem !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px !important;
}

/* ---------- CARD TAGS ---------- */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.tag {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ---------- PHASE CARDS ---------- */
.card-phase {
    position: relative;
    text-align: center;
    padding-top: 40px;
}

.phase-number {
    position: absolute;
    top: -1px;
    left: -1px;
    width: 36px;
    height: 36px;
    background: var(--gradient);
    border-radius: var(--radius) 0 12px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--white);
}

/* ---------- TIMELINE ---------- */
.timeline {
    position: relative;
    padding-left: 160px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 140px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding: 12px 0 12px 30px;
    display: flex;
    align-items: flex-start;
}

.timeline-time {
    position: absolute;
    left: -160px;
    width: 120px;
    text-align: right;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.85rem;
    color: var(--text-dim);
    padding-top: 2px;
}

.timeline-dot {
    position: absolute;
    left: -8px;
    top: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-dim);
    border: 2px solid var(--bg-slide);
}

.timeline-dot.dot-primary { background: var(--primary); box-shadow: 0 0 10px rgba(99,102,241,0.4); }
.timeline-dot.dot-accent { background: var(--accent); }

.timeline-content h4 {
    font-size: 1rem;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
}

.timeline-content h4 i { color: var(--primary-light); font-size: 0.9rem; }
.timeline-break .timeline-content h4 i { color: var(--accent); }

.timeline-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.timeline-highlight {
    background: rgba(99,102,241,0.05);
    border-radius: var(--radius-sm);
    padding: 12px 12px 12px 30px;
    margin: 4px 0;
}

/* ---------- CODE COMPARISON ---------- */
.code-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.code-panel {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.code-panel-header {
    padding: 12px 20px;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.code-bad .code-panel-header {
    background: rgba(239,68,68,0.1);
    color: var(--red);
    border-bottom: 1px solid rgba(239,68,68,0.15);
}

.code-good .code-panel-header {
    background: rgba(34,197,94,0.1);
    color: var(--green);
    border-bottom: 1px solid rgba(34,197,94,0.15);
}

.code-panel pre {
    margin: 0;
    padding: 0;
}

.code-panel pre code {
    background: var(--bg-code) !important;
    padding: 16px 20px !important;
    font-size: 0.78rem !important;
    line-height: 1.6 !important;
    display: block;
    border-radius: 0;
}

.code-issues {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(0,0,0,0.2);
}

.code-issues span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.78rem;
}

.code-bad .code-issues span { color: var(--red); }
.code-good .code-issues span,
.code-wins span { color: var(--green); }

/* ---------- ECOSYSTEM DIAGRAM ---------- */
.ecosystem-diagram {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.eco-row {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 16px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.eco-row:hover {
    background: var(--bg-card-hover);
    transform: translateX(4px);
}

.eco-task {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 280px;
    font-weight: 500;
}

.eco-task i {
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.eco-simple i { background: rgba(59,130,246,0.1); color: var(--blue); }
.eco-standard i { background: rgba(168,85,247,0.1); color: var(--purple); }
.eco-complex i { background: rgba(249,115,22,0.1); color: var(--orange); }

.eco-arrow { color: var(--text-dim); font-size: 1rem; }

.eco-solution {
    font-size: 1rem;
    color: var(--text);
}

.highlight-skill {
    background: rgba(168,85,247,0.2);
    color: var(--purple);
    padding: 2px 10px;
    border-radius: 4px;
    font-weight: 700;
}

.highlight-agent {
    background: rgba(249,115,22,0.2);
    color: var(--accent);
    padding: 2px 10px;
    border-radius: 4px;
    font-weight: 700;
}

/* ---------- DEFINITIONS ROW ---------- */
.definitions-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.definition-box {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.def-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    background: rgba(99,102,241,0.1);
    color: var(--primary-light);
}

.definition-box strong {
    color: var(--white);
}

.def-meta {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 2px;
}

/* ---------- SECTION SLIDES ---------- */
.slide-section {
    text-align: center;
    overflow: hidden;
}

.section-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: rgba(99,102,241,0.1);
    color: var(--primary-light);
    margin-bottom: 24px;
    border: 1px solid rgba(99,102,241,0.2);
}

.slide-section-agents .section-icon {
    background: rgba(249,115,22,0.1);
    color: var(--accent);
    border-color: rgba(249,115,22,0.2);
}

.slide-section-practice .section-icon {
    background: rgba(34,197,94,0.1);
    color: var(--green);
    border-color: rgba(34,197,94,0.2);
}

.section-label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 8px;
}

.section-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
}

.section-duration {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dim);
    font-size: 1rem;
    background: rgba(255,255,255,0.05);
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid var(--border);
}

/* ---------- SKILL STRUCTURE ---------- */
.skill-structure {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.skill-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateX(4px);
}

.skill-item-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: rgba(99,102,241,0.1);
    color: var(--primary-light);
    flex-shrink: 0;
}

.skill-item h4 { font-size: 0.95rem; color: var(--white); }
.skill-item p { font-size: 0.85rem; color: var(--text-muted); margin-top: 2px; }

/* ---------- KEY MESSAGE ---------- */
.key-message {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary);
    font-size: 1rem;
    color: var(--text);
}

.key-message i { color: var(--accent); font-size: 1.1rem; flex-shrink: 0; }

/* ---------- DEMO COMMAND ---------- */
.demo-command {
    margin-bottom: 32px;
}

.demo-command pre {
    margin: 0;
}

.demo-command pre code {
    background: var(--bg-code) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-sm) !important;
    padding: 16px 20px !important;
    font-size: 0.85rem !important;
    display: block;
}

/* ---------- CARD RESULT ---------- */
.card-result {
    background: var(--bg-card);
    border-left: 3px solid var(--primary);
}

.card-result-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

/* ---------- ANATOMY GRID ---------- */
.anatomy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.anatomy-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 20px;
    text-align: center;
    position: relative;
}

.anatomy-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--white);
    margin: 0 auto 12px;
}

.anatomy-item h4 {
    font-size: 0.95rem;
    color: var(--white);
    margin-bottom: 8px;
}

.anatomy-item p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.anatomy-badges {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-bottom: 8px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
}

.badge-green { background: rgba(34,197,94,0.1); color: var(--green); }
.badge-red { background: rgba(239,68,68,0.1); color: var(--red); }
.badge-blue { background: rgba(59,130,246,0.1); color: var(--blue); }
.badge-purple { background: rgba(168,85,247,0.1); color: var(--purple); }

/* ---------- EXERCISE TEMPLATE ---------- */
.exercise-template {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.template-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.template-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    background: rgba(99,102,241,0.1);
    color: var(--primary-light);
    flex-shrink: 0;
}

.template-item h4 { font-size: 0.95rem; color: var(--white); margin-bottom: 4px; }
.template-item p { font-size: 0.85rem; color: var(--text-muted); }

/* ---------- COMPARISON GRID ---------- */
.comparison-grid {
    display: flex;
    align-items: stretch;
    gap: 24px;
    margin-bottom: 24px;
}

.comparison-col {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.comparison-skill .comparison-header,
.comparison-skill { border-top: 3px solid var(--purple); }
.comparison-agent .comparison-header,
.comparison-agent { border-top: 3px solid var(--accent); }

.comparison-skill .comparison-header i { color: var(--purple); }
.comparison-agent .comparison-header i { color: var(--accent); }

.comparison-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.comparison-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text);
    padding: 6px 0;
}

.comparison-list li i { color: var(--green); font-size: 0.8rem; }

.comparison-list-numbered li {
    gap: 10px;
}

.step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(249,115,22,0.15);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.comparison-vs {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-dim);
    padding: 0 8px;
}

/* ---------- PHASES GRID ---------- */
.phases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.phase-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.phase-card-header {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
}

.phase-label {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.phase-blue { background: rgba(59,130,246,0.1); color: var(--blue); }
.phase-purple { background: rgba(168,85,247,0.1); color: var(--purple); }
.phase-green { background: rgba(34,197,94,0.1); color: var(--green); }
.phase-orange { background: rgba(249,115,22,0.1); color: var(--accent); }

.phase-card h4 {
    padding: 12px 16px 4px;
    font-size: 0.95rem;
    color: var(--white);
}

.phase-card ul {
    list-style: none;
    padding: 4px 16px 16px;
}

.phase-card ul li {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 3px 0;
}

.phase-card ul li i { color: var(--green); margin-left: 4px; }

/* ---------- DECISION TABLE ---------- */
.decision-table-wrap {
    margin-bottom: 32px;
    overflow-x: auto;
}

.decision-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius);
    overflow: hidden;
}

.decision-table th,
.decision-table td {
    padding: 14px 20px;
    text-align: center;
    font-size: 0.9rem;
}

.decision-table th {
    background: var(--bg-card);
    color: var(--white);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-light);
}

.decision-table th:first-child { text-align: left; }
.decision-table td:first-child { text-align: left; font-weight: 500; color: var(--white); }

.decision-table td {
    background: rgba(22,22,42,0.5);
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.decision-table tr:last-child td { border-bottom: none; }

/* ---------- RULE BAR ---------- */
.rule-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.rule-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
}

.rule-item i { font-size: 1.2rem; }
.rule-item span { font-weight: 600; font-size: 0.9rem; color: var(--white); }
.rule-item small { font-size: 0.75rem; color: var(--text-muted); }

.rule-simple { background: rgba(59,130,246,0.08); }
.rule-simple i { color: var(--blue); }
.rule-skill { background: rgba(168,85,247,0.08); }
.rule-skill i { color: var(--purple); }
.rule-agent { background: rgba(249,115,22,0.08); }
.rule-agent i { color: var(--accent); }

.rule-arrow { color: var(--text-dim); }

/* ---------- EXERCISE CARDS ---------- */
.card-exercise {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 28px 24px;
}

.exercise-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.exercise-number {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
}

.exercise-duration {
    font-size: 0.8rem;
    color: var(--text-dim);
    background: rgba(255,255,255,0.05);
    padding: 4px 12px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-exercise h3 {
    font-size: 1.15rem;
    color: var(--white);
    margin-bottom: 12px;
}

.exercise-subtitle {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.exercise-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.exercise-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.exercise-list li i {
    color: var(--primary-light);
    width: 16px;
    text-align: center;
}

/* ---------- DO / DON'T ---------- */
.do-dont-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.do-col, .dont-col {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.do-col { border-top: 3px solid var(--green); }
.dont-col { border-top: 3px solid var(--red); }

.do-header, .dont-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.do-header { color: var(--green); }
.dont-header { color: var(--red); }

.practice-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.practice-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text);
}

.practice-list li i { font-size: 0.8rem; }
.practice-list li .fa-check { color: var(--green); }
.practice-list-dont li .fa-xmark { color: var(--red); }

/* ---------- RECAP CARDS ---------- */
.card-recap {
    text-align: center;
    padding: 32px 24px;
}

.card-recap ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
    text-align: left;
}

.card-recap ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.card-recap ul li i {
    color: var(--primary-light);
    width: 16px;
    text-align: center;
    font-size: 0.8rem;
}

.card-recap-skill { border-top: 3px solid var(--purple); }
.card-recap-agent { border-top: 3px solid var(--accent); }
.card-recap-rule { border-top: 3px solid var(--primary); }

/* ---------- NEXT STEPS TIMELINE ---------- */
.next-steps-timeline {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.ns-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.ns-item:hover {
    background: var(--bg-card-hover);
    transform: translateX(4px);
}

.ns-period {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--primary-light);
    background: rgba(99,102,241,0.1);
    padding: 6px 16px;
    border-radius: 50px;
    white-space: nowrap;
    min-width: 110px;
    text-align: center;
}

.ns-content h4 {
    font-size: 1rem;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ns-content h4 i { color: var(--accent); }
.ns-content p { font-size: 0.85rem; color: var(--text-muted); margin-top: 2px; }

/* ---------- RESOURCES BOX ---------- */
.resources-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.resources-box h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 16px;
}

.resources-box h4 i { color: var(--primary-light); }

.resources-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.resources-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: var(--radius-xs);
    font-size: 0.85rem;
    color: var(--primary-light);
    transition: var(--transition);
}

.resources-links a:hover {
    background: rgba(99,102,241,0.15);
    transform: translateY(-2px);
}

/* ---------- MERCI SLIDE ---------- */
.slide-merci .cover-title {
    font-size: 4.5rem;
}

.merci-icon {
    font-size: 3rem;
    color: var(--red);
    margin-bottom: 16px;
    animation: pulse 2s ease-in-out infinite;
}

.merci-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 32px;
}

.merci-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.merci-item i {
    color: var(--primary-light);
    width: 24px;
    text-align: center;
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(20px, -20px); }
    66% { transform: translate(-10px, 15px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ---------- CARD TOOL HOVER ---------- */
.card-tool { transition: var(--transition); }
.card-tool:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1200px) {
    .slide {
        padding: 60px 80px 80px;
    }
}

@media (max-width: 1024px) {
    .slide {
        padding: 50px 60px 80px;
    }

    .cover-title { font-size: 3.5rem; }
    .cover-subtitle { font-size: 2rem; }
    .section-title { font-size: 2.5rem; }
    .slide-title { font-size: 2rem; }

    .cards-4 { grid-template-columns: repeat(2, 1fr); }
    .cards-3 { grid-template-columns: repeat(2, 1fr); }
    .phases-grid { grid-template-columns: repeat(2, 1fr); }
    .anatomy-grid { grid-template-columns: repeat(2, 1fr); }
    .timeline { padding-left: 140px; }
    .timeline::before { left: 120px; }
    .timeline-time { left: -140px; width: 100px; }
}

@media (max-width: 768px) {
    .slide {
        padding: 50px 24px 80px;
        align-items: flex-start;
        padding-top: 60px;
    }

    .nav-arrow {
        width: 40px;
        height: 40px;
        font-size: 0.85rem;
    }

    .nav-prev { left: 8px; }
    .nav-next { right: 8px; }

    .cover-title { font-size: 2.5rem; }
    .cover-subtitle { font-size: 1.5rem; }
    .cover-details { flex-direction: column; gap: 4px; }
    .cover-sep { display: none; }

    .section-title { font-size: 2rem; }
    .slide-title { font-size: 1.5rem; }

    .cards-4,
    .cards-3,
    .cards-2x2,
    .cards-2 { grid-template-columns: 1fr; }

    .code-comparison { grid-template-columns: 1fr; }

    .comparison-grid { flex-direction: column; }
    .comparison-vs { display: none; }

    .phases-grid { grid-template-columns: 1fr; }
    .anatomy-grid { grid-template-columns: 1fr 1fr; }
    .exercise-template { grid-template-columns: 1fr; }
    .do-dont-grid { grid-template-columns: 1fr; }
    .definitions-row { grid-template-columns: 1fr; }

    .timeline { padding-left: 24px; }
    .timeline::before { left: 6px; }
    .timeline-time {
        position: static;
        width: auto;
        text-align: left;
        margin-bottom: 4px;
        font-size: 0.75rem;
    }
    .timeline-item {
        flex-direction: column;
        padding-left: 24px;
    }
    .timeline-dot {
        left: 0;
        top: 6px;
    }

    .eco-task { min-width: auto; }
    .eco-row { flex-wrap: wrap; gap: 8px; }

    .rule-bar { flex-wrap: wrap; gap: 8px; }
    .rule-item { padding: 8px 16px; }
    .rule-arrow { display: none; }

    .dot-nav {
        gap: 4px;
        padding: 6px 12px;
    }

    .dot {
        width: 6px;
        height: 6px;
    }

    .dot.active {
        width: 18px;
    }

    .slide-counter {
        bottom: 60px;
        font-size: 0.75rem;
    }

    .resources-links { flex-direction: column; }
}

@media (max-width: 480px) {
    .cover-title { font-size: 2rem; }
    .section-title { font-size: 1.8rem; }
    .slide-title { font-size: 1.3rem; }
    .anatomy-grid { grid-template-columns: 1fr; }
}

/* ---------- SCROLLBAR ---------- */
.slide::-webkit-scrollbar {
    width: 4px;
}

.slide::-webkit-scrollbar-track {
    background: transparent;
}

.slide::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.slide::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* ---------- HLJS OVERRIDES ---------- */
.hljs {
    background: var(--bg-code) !important;
}

/* ---------- SELECTION ---------- */
::selection {
    background: rgba(99,102,241,0.3);
    color: var(--white);
}