/* ============================================
   DESIGN SYSTEM — Portfolio Titouan San Jose
   Theme: Modern Blue / Clean Tech
   ============================================ */

:root {
    --blue-900: #0A1628;
    --blue-800: #0F2040;
    --blue-600: #1E4ED8;
    --blue-500: #1E6FFF;
    --blue-400: #3B82F6;
    --blue-200: #BFDBFE;
    --blue-100: #DBEAFE;
    --blue-50:  #EFF6FF;
    --ice:      #F0F6FF;

    --slate-700: #334155;
    --slate-500: #64748B;
    --slate-300: #CBD5E1;
    --slate-100: #F1F5F9;
    --white:    #FFFFFF;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 100px;

    --shadow-sm: 0 1px 3px rgba(10,22,40,0.06), 0 1px 2px rgba(10,22,40,0.04);
    --shadow-md: 0 4px 16px rgba(10,22,40,0.08), 0 2px 6px rgba(10,22,40,0.04);
    --shadow-lg: 0 16px 40px rgba(30,111,255,0.12), 0 4px 12px rgba(10,22,40,0.06);
    --shadow-blue: 0 8px 30px rgba(30,111,255,0.22);

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── RESET ──────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    color: var(--slate-700);
    background: var(--white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }

/* ── LAYOUT ─────────────────────────────── */
.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 28px;
}
.section { padding: 96px 0; }
.bg-light { background: var(--ice); }
.text-center { text-align: center; }

/* ── SCROLL REVEAL ──────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── SECTION TITLES ─────────────────────── */
.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    color: var(--blue-900);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.section-title-line {
    width: 44px;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-500), var(--blue-400));
    border-radius: 2px;
    margin-bottom: 48px;
}
.text-center .section-title-line { margin-left: auto; margin-right: auto; }
.section-subtitle {
    color: var(--slate-500);
    font-size: 1.05rem;
    margin-bottom: 48px;
    margin-top: -36px;
    max-width: 560px;
}

/* ── NAVBAR ─────────────────────────────── */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 1000;
    padding: 14px 0;
    transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}
.navbar.scrolled {
    background: rgba(255,255,255,0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10,22,40,0.07), var(--shadow-sm);
    padding: 10px 0;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 28px;
}
.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--blue-900);
    text-decoration: none;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 2px;
}
.logo .dot { color: var(--blue-500); }

/* Theme pill nav */
.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--slate-100);
    border-radius: var(--radius-pill);
    padding: 5px;
    position: relative;
}
.nav-links li { position: relative; z-index: 1; }
.nav-links a {
    display: block;
    padding: 7px 18px;
    border-radius: var(--radius-pill);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--slate-500);
    transition: color 0.25s ease;
    white-space: nowrap;
}
.nav-links a:hover { color: var(--blue-900); }
.nav-links a.active { color: var(--white); }

/* Sliding pill indicator */
.nav-pill-indicator {
    position: absolute;
    top: 5px;
    left: 5px;
    height: calc(100% - 10px);
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-blue);
    transition: transform 0.35s var(--ease-spring), width 0.35s var(--ease-spring);
    z-index: 0;
    pointer-events: none;
}

/* ── HERO ────────────────────────────────── */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--white);
    padding: 120px 0 80px;
}

/* Animated background blobs */
.hero::before, .hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(80px);
    opacity: 0.55;
}
.hero::before {
    width: 600px; height: 600px;
    background: radial-gradient(circle, var(--blue-100), transparent 70%);
    top: -120px; right: -100px;
    animation: blobDrift 10s ease-in-out infinite alternate;
}
.hero::after {
    width: 400px; height: 400px;
    background: radial-gradient(circle, #c7d2fe, transparent 70%);
    bottom: -80px; left: -60px;
    animation: blobDrift 14s ease-in-out infinite alternate-reverse;
}
@keyframes blobDrift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(30px, -20px) scale(1.08); }
}

.hero-content {
    max-width: 780px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--blue-50);
    color: var(--blue-500);
    border: 1px solid var(--blue-200);
    border-radius: var(--radius-pill);
    padding: 6px 18px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 28px;
    animation: fadeInDown 0.7s var(--ease-out) both;
}
.hero-eyebrow-dot {
    width: 7px; height: 7px;
    background: var(--blue-500);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.75); }
}

.hero h1 {
    font-size: clamp(2.6rem, 6vw, 4.2rem);
    font-weight: 800;
    color: var(--blue-900);
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 16px;
    animation: fadeInUp 0.7s 0.1s var(--ease-out) both;
}
.hero h1 .name-highlight {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero h2 {
    font-size: clamp(1.1rem, 2.5vw, 1.45rem);
    color: var(--slate-500);
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.7s 0.18s var(--ease-out) both;
}
.hero-description {
    font-size: 1.05rem;
    color: var(--slate-500);
    max-width: 580px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.7s 0.26s var(--ease-out) both;
}
.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    animation: fadeInUp 0.7s 0.34s var(--ease-out) both;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to   { opacity: 1; transform: none; }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: none; }
}

/* ── BUTTONS ─────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: transform 0.22s var(--ease-spring), box-shadow 0.22s ease, background 0.2s ease;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
    box-shadow: var(--shadow-blue);
}
.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 36px rgba(30,111,255,0.32);
}
.btn-secondary {
    background: var(--white);
    color: var(--blue-900);
    border: 1.5px solid var(--slate-300);
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    border-color: var(--blue-400);
    color: var(--blue-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ── ABOUT ───────────────────────────────── */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 56px;
    align-items: center;
}
.about-text p {
    font-size: 1.05rem;
    margin-bottom: 18px;
    color: var(--slate-700);
}
.about-text strong { color: var(--blue-900); }

.status-card {
    background: linear-gradient(145deg, var(--blue-900), var(--blue-800));
    border-radius: var(--radius-lg);
    padding: 36px;
    color: var(--white);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.status-card::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(59,130,246,0.25), transparent 70%);
    pointer-events: none;
}
.status-card h3 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--blue-200);
    margin-bottom: 12px;
}
.status-card p {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(59,130,246,0.25);
    color: var(--blue-200);
    border: 1px solid rgba(59,130,246,0.35);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.82rem;
}

/* ── SKILLS ──────────────────────────────── */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.skill-card {
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: transform 0.25s var(--ease-spring), box-shadow 0.25s ease, border-color 0.25s ease;
    position: relative;
    overflow: hidden;
}
.skill-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--blue-50), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-md);
}
.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-200);
}
.skill-card:hover::before { opacity: 1; }
.skill-icon {
    font-size: 1.9rem;
    margin-bottom: 16px;
    display: block;
    position: relative;
}
.skill-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 10px;
}
.skill-card p {
    font-size: 0.9rem;
    color: var(--slate-500);
    line-height: 1.5;
}

/* ── TIMELINE ────────────────────────────── */
.timeline {
    position: relative;
    max-width: 760px;
    margin: 0 auto;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--blue-500), var(--blue-200));
    border-radius: 2px;
}
.timeline-item {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 0 24px;
    margin-bottom: 36px;
    position: relative;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: var(--shadow-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    align-self: flex-start;
    margin-top: 4px;
    position: relative;
    z-index: 1;
}
.timeline-dot::after {
    content: '';
    width: 10px; height: 10px;
    background: var(--white);
    border-radius: 50%;
    opacity: 0.8;
}
.timeline-content {
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.timeline-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--blue-200);
}
.timeline-date {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--blue-500);
    background: var(--blue-50);
    border: 1px solid var(--blue-100);
    padding: 3px 12px;
    border-radius: var(--radius-pill);
    margin-bottom: 10px;
}
.timeline-content h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 4px;
}
.timeline-content h4 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--blue-500);
    margin-bottom: 10px;
}
.timeline-content p {
    font-size: 0.92rem;
    color: var(--slate-500);
    line-height: 1.6;
}

/* ── PROJECTS ────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}
.project-card {
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-lg);
    padding: 30px;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s var(--ease-spring), box-shadow 0.25s ease, border-color 0.25s ease;
    position: relative;
    overflow: hidden;
}
.project-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blue-600), var(--blue-400));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-200);
}
.project-card:hover::after { transform: scaleX(1); }

.project-tag {
    display: inline-block;
    background: var(--blue-50);
    color: var(--blue-600);
    border: 1px solid var(--blue-200);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 18px;
    align-self: flex-start;
}
.project-card h3 {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 14px;
    line-height: 1.4;
}
.project-card p {
    font-size: 0.9rem;
    color: var(--slate-500);
    margin-bottom: 10px;
    line-height: 1.6;
    flex: 1;
}
.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    color: var(--blue-500);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.88rem;
    transition: gap 0.2s ease, color 0.2s ease;
}
.project-link:hover {
    color: var(--blue-600);
    gap: 10px;
}

/* ── CONTACT ─────────────────────────────── */
.contact-cards {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin: 44px 0;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 28px;
    background: var(--white);
    border: 1.5px solid var(--blue-100);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--blue-900);
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.22s var(--ease-spring), box-shadow 0.22s ease, border-color 0.22s ease;
    box-shadow: var(--shadow-sm);
}
.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-400);
    color: var(--blue-600);
}
.contact-item .icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}
.cv-download { margin-top: 8px; }

/* ── FOOTER ──────────────────────────────── */
.footer {
    background: var(--blue-900);
    color: rgba(255,255,255,0.45);
    text-align: center;
    padding: 40px 0;
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

/* ── HERO BUTTONS ────────────────────────── */
.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* ── PROJECT DETAIL PAGES ────────────────── */
.project-page-header {
    padding: 120px 0 64px;
    background: linear-gradient(160deg, var(--blue-900) 0%, #0F2855 100%);
    position: relative;
    overflow: hidden;
}
.project-page-header::before {
    content: '';
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.18), transparent 70%);
    top: -200px; right: -100px;
    pointer-events: none;
}
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--blue-200);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 28px;
    transition: color 0.2s ease, gap 0.2s ease;
    position: relative;
    z-index: 1;
}
.back-link:hover { color: var(--white); gap: 12px; }
.project-page-header h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    max-width: 720px;
    line-height: 1.2;
    position: relative;
    z-index: 1;
}
.project-page-header .lead {
    color: rgba(255,255,255,0.65);
    font-size: 1.05rem;
    max-width: 640px;
    margin-bottom: 28px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}
.meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    position: relative;
    z-index: 1;
}
.meta-badge {
    background: rgba(59,130,246,0.18);
    color: var(--blue-200);
    border: 1px solid rgba(59,130,246,0.3);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    font-weight: 600;
}

/* Step blocks for detail pages */
.case-study {
    max-width: 800px;
    margin: 0 auto;
    padding: 8px 0;
}
.step-block {
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-lg);
    padding: 34px;
    margin-bottom: 28px;
    transition: box-shadow 0.25s ease;
}
.step-block:hover { box-shadow: var(--shadow-md); }
.step-block h3 {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 18px;
}
.step-number {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 800;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(30,111,255,0.3);
}
.step-block ul { margin-left: 20px; margin-top: 12px; }
.step-block li { margin-bottom: 10px; font-size: 0.95rem; color: var(--slate-700); line-height: 1.6; }
.step-block p { font-size: 0.95rem; color: var(--slate-700); margin-top: 8px; line-height: 1.7; }
.step-block code {
    background: var(--blue-50);
    color: var(--blue-600);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: 'Fira Code', monospace;
}

.problem-box {
    background: #FFF7ED;
    border-left: 4px solid #F97316;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 16px 20px;
    margin: 20px 0;
    font-size: 0.9rem;
}
.problem-box strong { color: #C2410C; }

.success-box {
    background: #F0FDF4;
    border-left: 4px solid #22C55E;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 16px 20px;
    margin: 20px 0;
    font-size: 0.9rem;
}
.success-box strong { color: #15803D; }

.image-block {
    margin: 24px 0;
    text-align: center;
}
.image-block img {
    border-radius: var(--radius-md);
    border: 1px solid var(--blue-100);
    box-shadow: var(--shadow-md);
    max-width: 100%;
}
.image-caption {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--slate-500);
}

/* Detail page grids (projet2, projet3) */
.detail-page .project-section {
    margin-bottom: 28px;
}
.detail-page .details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1080px;
    margin: 0 auto;
    padding: 8px 28px 48px;
}
.detail-page .detail-card {
    background: var(--white);
    border: 1px solid var(--blue-100);
    border-radius: var(--radius-lg);
    padding: 30px;
    transition: transform 0.25s var(--ease-spring), box-shadow 0.25s ease;
    border-top: 3px solid var(--blue-500);
}
.detail-page .detail-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.detail-page .detail-card h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--blue-900);
    border-bottom: 1px solid var(--blue-50);
    padding-bottom: 14px;
    margin-bottom: 16px;
}
.detail-page .detail-card h2 span { font-size: 1.2rem; }
.detail-page .detail-card h3 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--slate-500);
    text-transform: uppercase;
    letter-spacing: 0.7px;
    margin-bottom: 14px;
}
.detail-page .custom-list { list-style: none; padding: 0; }
.detail-page .custom-list li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 12px;
    font-size: 0.92rem;
    color: var(--slate-700);
    line-height: 1.6;
}
.detail-page .custom-list li::before {
    content: '▹';
    color: var(--blue-500);
    position: absolute;
    left: 0;
    font-weight: 700;
}

.detail-page .context-section {
    max-width: 1080px;
    margin: 0 auto;
    padding: 48px 28px 0;
}
.detail-page .context-section p {
    font-size: 1rem;
    color: var(--slate-700);
    max-width: 760px;
    line-height: 1.75;
}

.detail-page .tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    justify-content: center;
}
.detail-page .tech-badge {
    background: var(--blue-500);
    color: var(--white);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 0.82rem;
    font-weight: 600;
}
.detail-page .project-footer {
    text-align: center;
    padding: 28px 28px 60px;
    color: var(--slate-500);
    font-size: 0.88rem;
}

.troubleshooting-box {
    background: #FFFBEB;
    border-left: 4px solid #FBBF24;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 18px 20px;
    margin-top: 22px;
    font-size: 0.9rem;
    color: #92400E;
}
.troubleshooting-box strong {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    margin-bottom: 10px;
}
.tech-sub-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--blue-500);
    margin: 18px 0 8px;
}

/* ── RESPONSIVE ──────────────────────────── */
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; }
    .status-card { max-width: 440px; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.2rem; }
    .section { padding: 68px 0; }
    .timeline::before { left: 18px; }
    .timeline-item { grid-template-columns: 44px 1fr; }
    .timeline-dot { width: 36px; height: 36px; }
    .detail-page .context-section,
    .detail-page .details-grid { padding-left: 20px; padding-right: 20px; }
    .detail-page .details-grid { grid-template-columns: 1fr; }
}

/* ── REDUCED MOTION ──────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
}