/* ============================================
   OASIS Landing Page - Styles
   ============================================ */

/* Variables */
:root {
    --primary: #00BFA5;
    --primary-dark: #00897B;
    --primary-light: #5EEAD4;
    --secondary: #26C6DA;
    --accent: #64FFDA;
    --bg-primary: #F8FFFE;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #E0F7F4;
    --text-primary: #1A202C;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

/* Reset */
*, *::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;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

/* ============================================
   Navbar
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255,255,255,0.98);
    border-bottom-color: var(--bg-tertiary);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-logo i { font-size: 2rem; }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.3s;
}

.nav-link:hover { color: var(--primary); }

.btn-nav {
    background: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius-full);
    transition: all 0.3s;
}

.btn-nav:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn i { font-size: 1.25rem; }

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,191,165,0.3);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
}

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

.btn-white {
    background: white;
    color: var(--primary);
}

.btn-white:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0,191,165,0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.hero-badge i { font-size: 1rem; }

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-item { text-align: center; }

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-light);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--bg-tertiary);
}

/* Mockup */
.hero-mockup {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup-wrapper { position: relative; }

.mockup-phone {
    position: relative;
    width: 280px;
    height: 580px;
    background: #1A202C;
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 50px 100px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.1) inset;
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #1A202C;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 32px;
    overflow: hidden;
}

.screen-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.mockup-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0,191,165,0.3) 0%, transparent 70%);
    z-index: -1;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.8; }
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

.floating-card i { font-size: 1.25rem; color: var(--primary); }

.card-1 {
    top: 15%;
    left: -20px;
    animation: float 3s ease-in-out infinite;
}

.card-2 {
    bottom: 20%;
    right: -30px;
    animation: float 3s ease-in-out infinite 0.5s;
}

.card-2 i { color: var(--warning); }

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

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 80px;
    fill: var(--bg-secondary);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-tertiary);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-description {
    font-size: 1.0625rem;
    color: var(--text-secondary);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    position: relative;
    padding: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-xl);
    transition: all 0.3s ease;
}

.feature-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 1.75rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits {
    padding: 100px 0;
    background: var(--bg-tertiary);
}

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

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.benefit-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.benefit-check {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.benefit-check i {
    font-size: 1rem;
    color: white;
}

.benefit-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.benefit-info p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.benefits-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    padding: 48px;
    box-shadow: var(--shadow-xl);
}

.progress-ring {
    position: relative;
    width: 200px;
    height: 200px;
}

.progress-ring svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.ring-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 8;
}

.ring-progress {
    fill: none;
    stroke: url(#gradient);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 37;
    animation: progressAnimation 2s ease-out forwards;
}

@keyframes progressAnimation {
    from { stroke-dashoffset: 283; }
    to { stroke-dashoffset: 37; }
}

.progress-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.progress-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.streak-badge {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gradient);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0,191,165,0.4);
    white-space: nowrap;
}

.streak-badge i { font-size: 1.25rem; }

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.testimonial-card {
    padding: 32px;
    background: var(--bg-primary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-xl);
    transition: all 0.3s ease;
}

.testimonial-card.featured {
    background: var(--gradient);
    border: none;
    transform: scale(1.05);
}

.testimonial-card.featured * { color: white !important; }

.testimonial-card.featured .author-avatar {
    background: rgba(255,255,255,0.2);
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.testimonial-stars i {
    font-size: 1rem;
    color: var(--warning);
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
}

.author-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
}

.author-role {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    position: relative;
    padding: 100px 0;
    background: var(--gradient);
    overflow: hidden;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.cta h2 .gradient-text {
    background: white;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta p {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 32px;
}

.cta-buttons { margin-bottom: 16px; }

.cta-note {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.7);
}

.cta-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.1);
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    left: -100px;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    right: 10%;
    animation: float 8s ease-in-out infinite 1s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: 20%;
    right: -50px;
    animation: float 7s ease-in-out infinite 0.5s;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 80px 0 24px;
    background: var(--text-primary);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--primary-light);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.footer-logo i { font-size: 2rem; }

.footer-brand p {
    color: var(--text-light);
    font-size: 0.9375rem;
    margin-bottom: 24px;
    max-width: 300px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    color: white;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    transition: all 0.3s;
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-column a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    margin-bottom: 12px;
    transition: color 0.3s;
}

.footer-column a:hover { color: var(--primary-light); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s;
}

.footer-legal a:hover { color: var(--primary-light); }

/* ============================================
   Animations
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-animate="fade-right"] { transform: translateX(-30px); }
[data-animate="fade-left"] { transform: translateX(30px); }
[data-animate="fade-up"] { transform: translateY(30px); }

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; gap: 40px; }
    .hero-content { order: 1; }
    .hero-mockup { order: 2; }
    .hero-description { margin: 0 auto 32px; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .benefits-content { grid-template-columns: 1fr; gap: 60px; }
    .benefits-text { text-align: center; }
    .benefit-item { text-align: left; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .testimonial-card.featured { transform: none; }
    .footer-content { grid-template-columns: 1fr; gap: 40px; }
    .footer-brand { text-align: center; }
    .footer-brand p { margin: 0 auto 24px; }
    .footer-social { justify-content: center; }
    .footer-links { justify-items: center; text-align: center; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.3s ease;
    }
    .nav-menu.active { transform: translateY(0); opacity: 1; }
    .nav-toggle { display: block; }
    .btn-nav { width: 100%; justify-content: center; }
    .hero { padding: 100px 0 60px; }
    .hero-title { font-size: 2rem; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .stat-divider { display: none; }
    .mockup-phone { width: 240px; height: 500px; }
    .floating-card { padding: 10px 16px; font-size: 0.8125rem; }
    .card-1 { left: 0; top: 10%; }
    .card-2 { right: 0; bottom: 15%; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .mockup-phone { width: 200px; height: 420px; border-radius: 30px; }
    .phone-screen { border-radius: 24px; }
    .phone-notch { width: 100px; height: 24px; }
    .visual-card { padding: 32px; }
    .progress-ring { width: 160px; height: 160px; }
    .progress-number { font-size: 2rem; }
}

/* Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 191, 165, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 191, 165, 0.5);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
    }
}