/* WristReward - Modern CSS Stylesheet */

/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1e1e2e;
    --dark-lighter: #2a2a3e;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
h3 { font-size: 1.5rem; }

p { color: var(--gray); }

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 5rem 0;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto 3rem;
    text-align: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--gray-light);
}

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-light);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    background: linear-gradient(180deg, var(--light) 0%, var(--white) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.patent-badge {
    display: inline-block;
    background: var(--dark);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Wristband Mockup */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.wristband-mockup {
    width: 280px;
    height: 280px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: pulse 2s ease-in-out infinite;
}

.wristband-mockup::before {
    content: '';
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    border: 2px solid var(--primary-light);
    opacity: 0.3;
}

.wristband-screen {
    width: 180px;
    height: 180px;
    background: var(--dark);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.earnings {
    font-size: 2.5rem;
    font-weight: 800;
}

.earnings-label {
    font-size: 0.875rem;
    color: var(--gray);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* How It Works */
.how-it-works {
    background: var(--white);
    text-align: center;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    padding: 2rem;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--light);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem auto 1.5rem;
    color: var(--primary);
}

.step h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.step p {
    font-size: 1rem;
    line-height: 1.7;
}

/* For Users Section */
.for-users {
    background: var(--light);
}

.split-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.content-text h2 {
    text-align: left;
}

.content-text > p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* Phone Mockup */
.phone-mockup {
    width: 280px;
    height: 500px;
    background: var(--dark);
    border-radius: 40px;
    padding: 1rem;
    box-shadow: var(--shadow-xl);
    margin: 0 auto;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 30px;
    padding: 2rem 1.5rem;
    overflow: hidden;
}

.app-header {
    font-weight: 800;
    font-size: 1.25rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.app-balance {
    font-size: 3rem;
    font-weight: 800;
    color: var(--dark);
}

.app-label {
    color: var(--gray);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.app-activity {
    background: var(--light);
    border-radius: 15px;
    padding: 1rem;
}

.activity-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-light);
    font-size: 0.875rem;
}

.activity-item:last-child {
    border-bottom: none;
}

.amount {
    color: var(--secondary);
    font-weight: 600;
}

/* For Partners */
.for-partners {
    background: var(--white);
    text-align: center;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.partner-card {
    background: var(--light);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.partner-card h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.partner-cta {
    margin-top: 4rem;
    padding: 3rem;
    background: var(--dark);
    border-radius: 20px;
    color: var(--white);
}

.partner-cta h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.partner-cta p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

/* About Section */
.about {
    background: var(--light);
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    text-align: left;
}

.about-badges {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.badge-icon {
    font-size: 2rem;
}

.badge span:nth-child(2) {
    font-weight: 700;
    color: var(--dark);
}

.badge-detail {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Waitlist Section */
.waitlist {
    background: var(--gradient);
    text-align: center;
    color: var(--white);
}

.waitlist h2 {
    color: var(--white);
}

.waitlist .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.waitlist-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 1rem;
}

.waitlist-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
}

.waitlist-form .btn-primary {
    background: var(--dark);
}

.waitlist-form .btn-primary:hover {
    background: var(--dark-lighter);
}

.form-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand .logo {
    display: block;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--gray);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-legal {
    text-align: right;
}

.footer-legal p {
    font-size: 0.875rem;
    color: var(--gray);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

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

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

    .hero-image {
        order: -1;
    }

    .wristband-mockup {
        width: 220px;
        height: 220px;
    }

    .wristband-screen {
        width: 140px;
        height: 140px;
    }

    .earnings {
        font-size: 2rem;
    }

    .steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 3rem auto 0;
    }

    .split-content {
        grid-template-columns: 1fr;
    }

    .content-text h2 {
        text-align: center;
    }

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

    .nav-links {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal {
        text-align: center;
    }
}

@media (max-width: 600px) {
    .hero-cta {
        flex-direction: column;
    }

    .waitlist-form {
        flex-direction: column;
    }

    .about-badges {
        gap: 2rem;
    }
}