/* ===========================
   TUTORAPP - VANILLA CSS
   Palette: Blues only
   =========================== */

:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-300: #93c5fd;
    --blue-400: #60a5fa;
    --blue-500: #4facf7;
    --blue-600: #188ff0;
    --blue-700: #1d6fcc;
    --blue-800: #1a3246;
    --blue-900: #0f1d2b;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
    --shadow-md: 0 10px 25px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.05);
    --shadow-lg: 0 20px 50px -12px rgba(0,0,0,.12);
    --shadow-xl: 0 25px 60px -12px rgba(0,0,0,.18);
    --transition: 0.3s cubic-bezier(.4,0,.2,1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   NAVBAR
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .nav-logo {
    color: var(--gray-900);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--white);
    color: var(--blue-600);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.1rem;
    transition: var(--transition);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.navbar.scrolled .logo-icon {
    background: var(--blue-600);
    color: var(--white);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255,255,255,.85);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.navbar.scrolled .nav-links a {
    color: var(--gray-600);
}

.navbar.scrolled .nav-links a:hover {
    color: var(--blue-600);
}

.navbar.scrolled .nav-links a::after {
    background: var(--blue-600);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-cta {
    text-decoration: none;
    background: var(--white);
    color: var(--blue-600);
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.navbar.scrolled .nav-cta {
    background: var(--blue-600);
    color: var(--white);
}

/* Language switcher */
.lang-switcher {
    position: relative;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,.15);
    border: 1px solid rgba(255,255,255,.25);
    color: var(--white);
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.lang-current:hover {
    background: rgba(255,255,255,.25);
}

.navbar.scrolled .lang-current {
    background: var(--gray-100);
    border-color: var(--gray-200);
    color: var(--gray-700);
}

.lang-flag {
    font-weight: 700;
    letter-spacing: 0.05em;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    min-width: 160px;
    z-index: 100;
}

.lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-700);
    text-align: left;
    transition: var(--transition);
}

.lang-option span {
    font-weight: 400;
    color: var(--gray-400);
}

.lang-option:hover {
    background: var(--blue-50);
    color: var(--blue-600);
}

.lang-option.active {
    background: var(--blue-50);
    color: var(--blue-600);
}

.lang-option.active span {
    color: var(--blue-400);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--gray-800);
}

/* ===========================
   HERO
   =========================== */

.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-600) 50%, var(--blue-500) 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: .08;
    background: var(--white);
}

.shape-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    left: 30%;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,.15);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,.2);
}

.hero h1 {
    font-size: clamp(2.4rem, 4.5vw, 3.6rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #a5d8ff, #ffffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 36px;
    max-width: 500px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-store {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,.12);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.25);
    color: var(--white);
    padding: 14px 24px;
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
}

.btn-store:hover {
    background: rgba(255,255,255,.2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-store small {
    font-size: 0.7rem;
    opacity: .8;
    display: block;
}

.btn-store strong {
    font-size: 1rem;
    display: block;
}

.btn-store-light {
    background: var(--white);
    color: var(--blue-800);
    border-color: var(--gray-200);
}

.btn-store-light:hover {
    background: var(--blue-50);
}

/* Phone mockup */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    z-index: 2;
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 0 0 2px rgba(255,255,255,.1),
        var(--shadow-xl),
        0 40px 80px -20px rgba(0,0,0,.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 30px;
    overflow: hidden;
}

.hero-screenshot {
    max-height: 560px;
    width: auto;
    display: block;
    filter: drop-shadow(0 20px 50px rgba(0,0,0,.18));
}

.app-header-mock {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    font-weight: 700;
    color: var(--blue-800);
}

.app-logo-mock {
    width: 32px;
    height: 32px;
    background: var(--blue-600);
    color: var(--white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 0.85rem;
}

.search-bar-mock {
    background: var(--gray-100);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.8rem;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.app-cards-mock {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card-mock {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--gray-50);
    border-radius: 12px;
    border: 1px solid var(--gray-100);
}

.card-avatar-mock {
    width: 40px;
    height: 40px;
    background: var(--blue-500);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.card-info-mock strong {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-800);
}

.card-info-mock span {
    display: block;
    font-size: 0.72rem;
    color: var(--gray-400);
}

.card-price-mock {
    color: var(--blue-600) !important;
    font-weight: 600;
    margin-top: 2px;
}

/* Floating cards */
.floating-card {
    position: absolute;
    background: var(--white);
    padding: 14px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-800);
    z-index: 3;
    animation: float 4s ease-in-out infinite;
}

.fc-1 {
    top: 60px;
    right: -20px;
    animation-delay: 0s;
}

.fc-2 {
    bottom: 100px;
    left: -10px;
    animation-delay: 2s;
}

.fc-icon {
    font-size: 1.3rem;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===========================
   SECTION COMMON
   =========================== */

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    background: var(--blue-50);
    color: var(--blue-600);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--gray-500);
    font-size: 1.1rem;
}

/* ===========================
   FEATURES
   =========================== */

.features {
    padding: 120px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--blue-200);
    background: var(--white);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--blue-50);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue-600);
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--blue-600);
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-500);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ===========================
   HOW IT WORKS
   =========================== */

.how-it-works {
    padding: 120px 0;
    background: var(--gray-50);
}

.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin-bottom: 80px;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 280px;
    padding: 0 20px;
    opacity: 0;
    transform: translateY(30px);
}

.step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px -4px rgba(24,143,240,.35);
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.step-content p {
    font-size: 0.92rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.step-connector {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--blue-200), var(--blue-400));
    margin-top: 32px;
    flex-shrink: 0;
}

/* Dual path */
.dual-path {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.path-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.path-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.path-card:hover {
    border-color: var(--blue-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.path-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.student-icon {
    background: var(--blue-50);
    color: var(--blue-600);
}

.tutor-icon {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
}

.path-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.path-card p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===========================
   STORY
   =========================== */

.story {
    padding: 120px 0;
    background: var(--white);
}

.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.story-content {
    opacity: 0;
    transform: translateY(30px);
}

.story-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.story-content h2 {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.story-content p {
    color: var(--gray-500);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.story-badges {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.story-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--blue-50);
    color: var(--blue-700);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
}

.story-visual {
    opacity: 0;
    transform: translateY(30px);
}

.story-visual.visible {
    opacity: 1;
    transform: translateY(0);
}

.founder-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.founder-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    padding: 20px 24px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.founder-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--blue-200);
}

.founder-avatar {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.founder-avatar.mc {
    background: linear-gradient(135deg, var(--blue-800), var(--blue-700));
}

.founder-info strong {
    display: block;
    font-size: 0.95rem;
    color: var(--gray-900);
}

.founder-info span {
    display: block;
    font-size: 0.82rem;
    color: var(--blue-600);
    font-weight: 600;
}

.founder-info small {
    display: block;
    font-size: 0.78rem;
    color: var(--gray-400);
    margin-top: 2px;
}

.story-quote {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    padding: 28px 32px;
    border-radius: var(--radius-lg);
    position: relative;
}

.story-quote blockquote {
    color: var(--white);
    font-size: 1rem;
    font-style: italic;
    line-height: 1.7;
    font-weight: 500;
}

/* ===========================
   STATS
   =========================== */

.stats {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-600) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255,255,255,.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-lg);
    opacity: 0;
    transform: translateY(30px);
}

.stat-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    color: rgba(255,255,255,.7);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===========================
   DOWNLOAD CTA
   =========================== */

.download-cta {
    padding: 120px 0;
    background: var(--gray-50);
}

.download-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
}

.download-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.download-content h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.download-content p {
    color: var(--gray-500);
    font-size: 1.1rem;
    margin-bottom: 36px;
    line-height: 1.7;
}

.download-content .hero-buttons {
    justify-content: center;
}

/* ===========================
   CONTACT
   =========================== */

.contact {
    padding: 120px 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: start;
}

.contact-form {
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--gray-800);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(79,172,247,.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    display: inline-block;
    text-decoration: none;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
    color: var(--white);
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 16px -4px rgba(24,143,240,.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -4px rgba(24,143,240,.5);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-info-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    padding: 28px;
    border-radius: var(--radius-lg);
}

.contact-info-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.contact-info-card p {
    color: var(--gray-500);
    font-size: 0.9rem;
    line-height: 1.6;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 0.92rem;
    padding: 12px 16px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.contact-link:hover {
    border-color: var(--blue-300);
    color: var(--blue-600);
    transform: translateX(4px);
}

.contact-link svg {
    flex-shrink: 0;
    color: var(--blue-600);
}

/* ===========================
   FOOTER
   =========================== */

.footer {
    background: var(--gray-900);
    padding: 60px 0 30px;
    color: var(--gray-400);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand p {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-top: 16px;
    max-width: 280px;
}

.footer-brand .nav-logo {
    color: var(--white);
}

.footer-brand .logo-icon {
    background: var(--blue-600);
    color: var(--white);
}

.footer-links-group h4 {
    color: var(--white);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links-group ul {
    list-style: none;
}

.footer-links-group li {
    margin-bottom: 10px;
}

.footer-links-group a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--transition);
}

.footer-links-group a:hover {
    color: var(--blue-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 0.82rem;
}

.footer-social a {
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-social a:hover {
    color: var(--blue-400);
}

/* ===========================
   ANIMATIONS
   =========================== */

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-subtitle {
        margin: 0 auto 36px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .story-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .nav-right {
        gap: 10px;
    }

    .nav-right .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    /* Mobile menu */
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        height: 100dvh;
        background: var(--blue-800);
        z-index: 1100;
        align-items: center;
        justify-content: center;
        gap: 28px;
        padding: 80px 20px 40px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-links.active li {
        list-style: none;
    }

    .nav-links.active a {
        font-size: 1.3rem;
        color: var(--white);
    }

    /* When menu is open: kill navbar backdrop-filter so iOS doesn't trap
       position:fixed descendants inside the navbar's containing block. */
    body.menu-open .navbar,
    body.menu-open .navbar.scrolled {
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        box-shadow: none;
    }

    body.menu-open .nav-toggle {
        position: relative;
        z-index: 1200;
    }

    body.menu-open .nav-toggle span {
        background: var(--white);
    }

    .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);
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .phone-frame {
        width: 240px;
        height: 480px;
    }

    .floating-card {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-container {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }

    .dual-path {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 28px 20px;
    }

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-card {
        padding: 28px 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-store {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .stat-number {
        font-size: 2.2rem;
    }
}