/* =============================================
   DOAPPEE — SITE VITRINE
   style.css — Styles globaux + responsive
   ============================================= */

/* === VARIABLES === */
:root {
    --bg-primary:       #0B0D17;
    --bg-secondary:     #12151F;
    --bg-card:          #1A1D2E;
    --bg-card-hover:    #1E2235;

    --color-brand:          #7C3AED;
    --color-brand-light:    #9F67FF;
    --color-brand-dark:     #5B21B6;

    --color-calinedar:      #FF6B6B;
    --color-calinedar-light:#FF8E8E;
    --color-calinedar-warm: #FF9A3C;

    --color-tuto3d:         #06B6D4;
    --color-tuto3d-light:   #22D3EE;

    --color-text:       #F1F5F9;
    --color-muted:      #94A3B8;
    --color-border:     rgba(255, 255, 255, 0.08);

    --radius:    16px;
    --radius-sm: 8px;
    --radius-lg: 24px;

    --shadow:               0 4px 24px rgba(0, 0, 0, 0.35);
    --glow-brand:           0 0 32px rgba(124, 58, 237, 0.35);
    --glow-calinedar:       0 0 32px rgba(255, 107, 107, 0.35);
    --glow-tuto3d:          0 0 32px rgba(6, 182, 212, 0.35);

    --transition: all 0.3s ease;
    --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* === RESET === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background-color: var(--bg-primary);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* === TYPOGRAPHIE === */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); font-weight: 700; line-height: 1.25; }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); font-weight: 600; }
p  { color: var(--color-muted); font-size: clamp(0.9rem, 1.5vw, 1rem); }

.gradient-text {
    background: linear-gradient(135deg, var(--color-brand-light), var(--color-calinedar));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-calinedar {
    background: linear-gradient(135deg, var(--color-calinedar-light), var(--color-calinedar-warm));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-tuto3d {
    background: linear-gradient(135deg, var(--color-tuto3d-light), var(--color-brand-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === LAYOUT === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
section { padding: 5rem 0; }
.section-subtitle {
    color: var(--color-muted);
    font-size: 1.05rem;
    margin-top: 0.5rem;
    margin-bottom: 3rem;
}

/* === BOUTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font);
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-dark));
    color: #fff;
    box-shadow: var(--glow-brand);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 44px rgba(124,58,237,0.55); }

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
    backdrop-filter: blur(10px);
}
.btn-secondary:hover { border-color: var(--color-brand-light); color: var(--color-brand-light); transform: translateY(-2px); }

.btn-calinedar {
    background: linear-gradient(135deg, var(--color-calinedar), var(--color-calinedar-warm));
    color: #fff;
}
.btn-calinedar:hover { transform: translateY(-2px); box-shadow: var(--glow-calinedar); }

.btn-tuto3d {
    background: linear-gradient(135deg, var(--color-tuto3d), var(--color-brand));
    color: #fff;
}
.btn-tuto3d:hover { transform: translateY(-2px); box-shadow: var(--glow-tuto3d); }

/* Bouton Google Play */
.btn-playstore {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    background: #1a1a2e;
    border: 1.5px solid rgba(255,255,255,0.15);
    color: #fff;
    padding: 0.8rem 1.6rem;
    border-radius: 14px;
    transition: var(--transition);
    font-family: var(--font);
}
.btn-playstore i { font-size: 2rem; color: #4ade80; flex-shrink: 0; }
.btn-playstore .btn-play-text { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.2; }
.btn-playstore .btn-play-text small { font-size: 0.68rem; color: var(--color-muted); font-weight: 400; }
.btn-playstore .btn-play-text strong { font-size: 1.15rem; font-weight: 700; }
.btn-playstore:hover { border-color: #4ade80; transform: translateY(-2px); box-shadow: 0 0 30px rgba(74,222,128,0.25); }

/* === NAVBAR === */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 1.1rem 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(11, 13, 23, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 0;
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
    display: flex; align-items: center; gap: 0.7rem;
    font-weight: 800; font-size: 1.25rem; color: var(--color-text);
}
.nav-logo img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }

.nav-menu { display: flex; align-items: center; gap: 2.5rem; }
.nav-menu a {
    color: var(--color-muted); font-weight: 500; font-size: 0.92rem;
    transition: var(--transition); position: relative;
}
.nav-menu a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: var(--color-brand-light);
    transition: width 0.3s ease; border-radius: 2px;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-text); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }

.nav-toggle {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 5px; z-index: 1001;
}
.nav-toggle span {
    display: block; width: 25px; height: 2px;
    background: var(--color-text); border-radius: 2px; transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.65); z-index: 997; backdrop-filter: blur(4px);
}
.nav-overlay.open { display: block; }

/* === HERO — COMMUN === */
.hero {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    text-align: center;
    padding: 8rem 1.5rem 5rem;
}
/* Grille circuit en fond */
.hero::after {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}
.hero-content {
    position: relative; z-index: 2;
    max-width: 820px; margin: 0 auto;
}
.hero-logo {
    width: 120px; height: 120px;
    border-radius: 50%; object-fit: cover;
    margin: 0 auto 2rem;
    filter: drop-shadow(0 0 30px rgba(124,58,237,0.5));
    animation: float 4s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.hero-content h1 { color: var(--color-text); margin-bottom: 1.25rem; }
.hero-content > p {
    font-size: clamp(1rem, 2vw, 1.15rem);
    max-width: 600px; margin: 0 auto 2.5rem;
}
.hero-btns {
    display: flex; gap: 1rem;
    justify-content: center; flex-wrap: wrap;
}
.scroll-indicator {
    position: absolute; bottom: 2rem; left: 50%;
    transform: translateX(-50%); z-index: 2;
}
.scroll-indicator span {
    display: block; width: 24px; height: 40px;
    border: 2px solid rgba(255,255,255,0.2); border-radius: 12px;
    position: relative;
}
.scroll-indicator span::before {
    content: ''; position: absolute;
    top: 6px; left: 50%; transform: translateX(-50%);
    width: 4px; height: 8px;
    background: var(--color-brand-light); border-radius: 2px;
    animation: scrollDot 2s ease-in-out infinite;
}
@keyframes scrollDot {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50%       { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* === HERO ACCUEIL === */
.hero-index::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(124,58,237,0.18) 0%, transparent 55%),
        radial-gradient(circle at 80% 20%, rgba(6,182,212,0.12) 0%, transparent 50%),
        radial-gradient(circle at 60% 80%, rgba(255,107,107,0.1) 0%, transparent 45%);
    pointer-events: none;
}

/* === HERO CALINEDAR === */
.hero-calinedar::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(255,107,107,0.18) 0%, transparent 60%),
        radial-gradient(ellipse at 75% 30%, rgba(124,58,237,0.1) 0%, transparent 55%);
    pointer-events: none;
}

/* === HERO TUTO3D === */
.hero-tuto3d::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(6,182,212,0.18) 0%, transparent 60%),
        radial-gradient(ellipse at 75% 30%, rgba(124,58,237,0.12) 0%, transparent 55%);
    pointer-events: none;
}

/* Icône app dans le hero des pages app */
.app-hero-icon {
    width: 100px; height: 100px; border-radius: 24px;
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem; margin: 0 auto 2rem;
    transition: var(--transition);
}
.app-hero-icon.cal {
    background: linear-gradient(135deg, rgba(255,107,107,0.2), rgba(255,154,60,0.15));
    border: 1px solid rgba(255,107,107,0.35);
    color: var(--color-calinedar);
    box-shadow: 0 0 40px rgba(255,107,107,0.2);
}
.app-hero-icon.t3d {
    background: linear-gradient(135deg, rgba(6,182,212,0.2), rgba(124,58,237,0.15));
    border: 1px solid rgba(6,182,212,0.35);
    color: var(--color-tuto3d);
    box-shadow: 0 0 40px rgba(6,182,212,0.2);
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem) !important;
    font-weight: 600; margin-bottom: 0.75rem;
}
.hero-subtitle.cal { color: var(--color-calinedar) !important; }
.hero-subtitle.t3d { color: var(--color-tuto3d) !important; }

/* === SECTION APPS (INDEX) === */
.apps-section { background: var(--bg-secondary); }
.apps-section h2, .apps-section .section-subtitle { text-align: center; }
.apps-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 2rem; margin-top: 3rem;
}

.app-card {
    background: var(--bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}
.app-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; transition: var(--transition);
}
.calinedar-card::before { background: linear-gradient(90deg, var(--color-calinedar), var(--color-calinedar-warm)); }
.tuto3d-card::before    { background: linear-gradient(90deg, var(--color-tuto3d), var(--color-brand)); }
.app-card:hover { transform: translateY(-6px); border-color: rgba(255,255,255,0.14); }
.calinedar-card:hover { box-shadow: var(--glow-calinedar); }
.tuto3d-card:hover    { box-shadow: var(--glow-tuto3d); }

.app-card-icon {
    width: 62px; height: 62px; border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.75rem; margin-bottom: 1.25rem;
}
.app-card-icon.cal { background: linear-gradient(135deg, rgba(255,107,107,0.2), rgba(255,154,60,0.15)); color: var(--color-calinedar); }
.app-card-icon.t3d { background: linear-gradient(135deg, rgba(6,182,212,0.2), rgba(124,58,237,0.15)); color: var(--color-tuto3d); }

.app-badge {
    position: absolute; top: 1.5rem; right: 1.5rem;
    padding: 0.3rem 0.85rem; border-radius: 50px;
    font-size: 0.72rem; font-weight: 600;
    display: flex; align-items: center; gap: 0.4rem;
}
.badge-live { background: rgba(34,197,94,0.12); color: #22c55e; border: 1px solid rgba(34,197,94,0.3); }
.badge-live i { font-size: 0.5rem; animation: blink 2s infinite; }
.badge-soon { background: rgba(250,204,21,0.1); color: #facc15; border: 1px solid rgba(250,204,21,0.3); }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.25} }

.app-card h3 { font-size: 1.55rem; margin-bottom: 0.75rem; color: var(--color-text); }
.app-card p  { margin-bottom: 1.5rem; line-height: 1.75; }
.app-features { margin-bottom: 2rem; }
.app-features li {
    display: flex; align-items: center; gap: 0.6rem;
    color: var(--color-muted); font-size: 0.88rem; padding: 0.28rem 0;
}
.app-features li i { color: #22c55e; font-size: 0.75rem; }

/* === SECTION À PROPOS (INDEX) === */
.about-content {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 4rem; align-items: center;
}
.about-text h2 { margin-bottom: 1.25rem; }
.about-text p  { margin-bottom: 1rem; line-height: 1.85; }
.about-stats   { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.stat {
    background: var(--bg-card); border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 1.5rem; text-align: center;
    transition: var(--transition);
}
.stat:hover { border-color: var(--color-brand); box-shadow: var(--glow-brand); transform: translateY(-3px); }
.stat-number {
    display: block; font-size: 2.6rem; font-weight: 800;
    background: linear-gradient(135deg, var(--color-brand-light), var(--color-calinedar));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { display: block; font-size: 0.78rem; color: var(--color-muted); margin-top: 0.25rem; }

/* === SECTION CONTACT === */
.contact-section { background: var(--bg-secondary); text-align: center; }
.contact-section h2, .contact-section .section-subtitle { margin-left: auto; margin-right: auto; }
.contact-form {
    max-width: 620px; margin: 3rem auto 0;
    display: flex; flex-direction: column; gap: 1rem; text-align: left;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form input,
.contact-form textarea {
    background: var(--bg-card); border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.875rem 1.25rem;
    color: var(--color-text); font-family: var(--font); font-size: 0.95rem;
    transition: var(--transition); width: 100%;
}
.contact-form input:focus,
.contact-form textarea:focus {
    outline: none; border-color: var(--color-brand);
    box-shadow: 0 0 0 3px rgba(124,58,237,0.15);
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--color-muted); }
.contact-form .btn { align-self: flex-start; }

/* === FOOTER === */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0 1.5rem;
}
.footer-content {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.7rem; font-weight: 800; font-size: 1.2rem; }
.footer-brand img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
.footer-links { display: flex; gap: 2rem; flex-wrap: wrap; }
.footer-links a { color: var(--color-muted); font-size: 0.88rem; transition: var(--transition); }
.footer-links a:hover { color: var(--color-brand-light); }
.footer-social { display: flex; gap: 0.75rem; }
.footer-social a {
    width: 38px; height: 38px; border-radius: 50%;
    background: var(--bg-card); border: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: center;
    color: var(--color-muted); font-size: 0.88rem; transition: var(--transition);
}
.footer-social a:hover { border-color: var(--color-brand-light); color: var(--color-brand-light); transform: translateY(-2px); }
.footer-copy {
    text-align: center; font-size: 0.78rem; color: var(--color-muted);
    border-top: 1px solid var(--color-border); padding-top: 1.5rem;
}

/* =============================================
   PAGE CALINEDAR
   ============================================= */

/* Features */
.features-section { background: var(--bg-secondary); }
.features-section > .container > h2 { text-align: center; margin-bottom: 3rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.5rem; }
.feature-card {
    background: var(--bg-card); border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 2rem; text-align: center;
    transition: var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(255,107,107,0.3); box-shadow: 0 0 20px rgba(255,107,107,0.12); }
.feature-card i { font-size: 2.4rem; color: var(--color-calinedar); margin-bottom: 1.25rem; display: block; }
.feature-card h3 { margin-bottom: 0.7rem; color: var(--color-text); }

/* Screenshots */
.screenshots-section { overflow: hidden; }
.screenshots-section > .container > h2 { text-align: center; margin-bottom: 3rem; }
.screenshots-scroll {
    display: flex; gap: 1.25rem; overflow-x: auto;
    padding: 1rem 1.5rem 2rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-brand) transparent;
}
.screenshots-scroll::-webkit-scrollbar { height: 5px; }
.screenshots-scroll::-webkit-scrollbar-track { background: transparent; }
.screenshots-scroll::-webkit-scrollbar-thumb { background: var(--color-brand); border-radius: 10px; }
.screenshot-item {
    flex-shrink: 0;
    width: 220px; aspect-ratio: 9/19.5;
    border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--bg-card);
    scroll-snap-align: start; transition: var(--transition);
    display: flex; align-items: center; justify-content: center;
}
.screenshot-item img { width: 100%; height: 100%; object-fit: cover; }
.screenshot-item:hover { transform: translateY(-6px) scale(1.02); box-shadow: 0 20px 40px rgba(0,0,0,0.45); border-color: rgba(255,107,107,0.35); }

/* Placeholder screenshot (avant l'ajout des vraies images) */
.screenshot-placeholder {
    width: 100%; height: 100%;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 0.75rem; color: var(--color-muted);
    padding: 1.5rem; text-align: center;
}
.screenshot-placeholder i { font-size: 2.5rem; opacity: 0.25; }
.screenshot-placeholder span { font-size: 0.78rem; opacity: 0.5; }

/* CTA download */
.cta-section {
    background: linear-gradient(135deg, rgba(255,107,107,0.08), rgba(124,58,237,0.1));
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    text-align: center; padding: 4.5rem 0;
}
.cta-section h2 { color: var(--color-text); margin-bottom: 0.75rem; }
.cta-section p  { margin-bottom: 2.25rem; }

/* =============================================
   PAGE TUTO3D
   ============================================= */

.coming-soon-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(250,204,21,0.1); border: 1px solid rgba(250,204,21,0.3);
    color: #facc15; padding: 0.45rem 1.2rem; border-radius: 50px;
    font-size: 0.82rem; font-weight: 600; margin-bottom: 1.5rem;
}

.concept-section { background: var(--bg-secondary); }
.concept-section > .container > h2 { text-align: center; margin-bottom: 3rem; }
.concept-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.5rem; }
.concept-card {
    background: var(--bg-card); border: 1px solid var(--color-border);
    border-radius: var(--radius); padding: 2rem; transition: var(--transition);
    position: relative; overflow: hidden;
}
.concept-card::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-tuto3d), var(--color-brand));
    transform: scaleX(0); transition: transform 0.35s ease;
}
.concept-card:hover { transform: translateY(-4px); border-color: rgba(6,182,212,0.3); }
.concept-card:hover::after { transform: scaleX(1); }
.concept-card i { font-size: 2.4rem; color: var(--color-tuto3d); margin-bottom: 1.25rem; display: block; }
.concept-card h3 { margin-bottom: 0.7rem; color: var(--color-text); }

/* Formulaire notification Tuto3D */
.notify-section { text-align: center; }
.notify-section h2 { margin-bottom: 0.6rem; }
.notify-section .section-subtitle { margin-bottom: 2.5rem; }
.notify-form {
    max-width: 520px; margin: 0 auto;
    display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center;
}
.notify-form input {
    flex: 1; min-width: 260px;
    background: var(--bg-card); border: 1px solid var(--color-border);
    border-radius: 50px; padding: 0.875rem 1.5rem;
    color: var(--color-text); font-family: var(--font); font-size: 0.95rem;
    transition: var(--transition);
}
.notify-form input:focus { outline: none; border-color: var(--color-tuto3d); box-shadow: 0 0 0 3px rgba(6,182,212,0.15); }
.notify-form input::placeholder { color: var(--color-muted); }

/* Message succès formulaire */
.form-success {
    display: none; align-items: center; justify-content: center;
    gap: 0.6rem; color: #22c55e;
    font-weight: 600; font-size: 1rem; padding: 1rem;
}
.form-success i { font-size: 1.4rem; }

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1024px) {
    .about-content { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
    section { padding: 3.5rem 0; }

    /* Navbar mobile */
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed; top: 0; right: -100%;
        height: 100vh; width: min(300px, 85vw);
        background: var(--bg-secondary);
        border-left: 1px solid var(--color-border);
        flex-direction: column; justify-content: center;
        align-items: flex-start;
        padding: 2.5rem 2rem; gap: 1.75rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
    }
    .nav-menu.open { right: 0; }
    .nav-menu a { font-size: 1.15rem; }

    /* Hero */
    .hero-logo { width: 90px; height: 90px; }

    /* Apps grid */
    .apps-grid { grid-template-columns: 1fr; }

    /* About */
    .about-content { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(3, 1fr); }

    /* Contact form */
    .form-row { grid-template-columns: 1fr; }

    /* Footer */
    .footer-content { flex-direction: column; align-items: center; text-align: center; }
    .footer-links { justify-content: center; }
    .footer-social { justify-content: center; }

    /* Screenshots */
    .screenshot-item { width: 180px; }

    /* Notify form */
    .notify-form { flex-direction: column; align-items: stretch; }
    .notify-form input { min-width: auto; border-radius: var(--radius-sm); }
    .notify-form .btn { border-radius: var(--radius-sm); justify-content: center; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.9rem; }
    .hero-btns { flex-direction: column; align-items: center; }
    .about-stats { grid-template-columns: 1fr 1fr; gap: 1rem; }
    .btn-playstore { padding: 0.7rem 1.2rem; }
    .contact-form .btn { width: 100%; justify-content: center; }
}