/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --primary-purple: #7B2CBF;
    --primary-pink: #E91E63;
    --gradient-main: linear-gradient(135deg, #7B2CBF 0%, #C44569 50%, #E91E63 100%);
    --gradient-soft: linear-gradient(135deg, rgba(123, 44, 191, 0.1) 0%, rgba(233, 30, 99, 0.1) 100%);
    --dark: #1a1a2e;
    --text-dark: #2d2d44;
    --text-light: #666;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --border-radius: 16px;
    --box-shadow: 0 10px 40px rgba(123, 44, 191, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 2px 4px rgba(123, 44, 191, 0.3));
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

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

.btn-primary-small {
    background: var(--gradient-main);
    color: var(--white) !important;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
}

.btn-primary-small:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(123, 44, 191, 0.3);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    background: var(--gradient-main);
    padding: 140px 0 100px;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

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

.language-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.flags {
    font-size: 1rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    opacity: 0.95;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-icon {
    font-size: 1.2rem;
}

/* Phone Mockup */
.phone-mockup {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 30px 60px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 32px;
    overflow: hidden;
}

.app-preview {
    padding: 1.5rem;
}

.preview-header {
    text-align: center;
    margin-bottom: 2rem;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.preview-goals {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.goal-card {
    display: flex;
    gap: 1rem;
    align-items: center;
    background: var(--white);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.goal-emoji {
    font-size: 2rem;
}

.goal-info {
    flex: 1;
}

.goal-name {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.progress-bar {
    height: 6px;
    background: #e0e0e0;
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 0.3rem;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-main);
    border-radius: 3px;
    transition: width 1s ease;
}

.goal-amount {
    font-size: 0.75rem;
    color: var(--text-light);
}

.preview-challenges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.challenge-badge {
    background: var(--gradient-soft);
    color: var(--primary-purple);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

.hero-wave path {
    fill: var(--white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.8;
}

/* ========================================
   Screenshots Section
   ======================================== */
.screenshots {
    padding: 100px 0;
    background: var(--light-bg);
}

.screenshots-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

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

.screenshot-mockup {
    display: inline-block;
}

.screenshot-frame {
    width: 250px;
    height: 500px;
    background: #1a1a1a;
    border-radius: 30px;
    padding: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    margin-bottom: 1rem;
}

.screenshot-content {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.screenshot-content.dashboard {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.dashboard-header h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.balance {
    font-size: 2rem;
    font-weight: 800;
}

.dashboard-chart {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    height: 200px;
    margin-top: 2rem;
}

.chart-bar {
    flex: 1;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 8px 8px 0 0;
    min-height: 20%;
}

.screenshot-content.goals {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.goals-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.goal-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem;
    border-radius: 12px;
    color: var(--white);
    font-weight: 600;
}

.screenshot-content.challenges {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.challenge-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.challenge-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem;
    border-radius: 12px;
    color: var(--white);
    font-weight: 600;
}

.screenshot-content.achievements {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

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

.badge {
    background: rgba(255, 255, 255, 0.3);
    padding: 2rem;
    border-radius: 12px;
    font-size: 3rem;
}

.screenshot-label {
    font-weight: 600;
    color: var(--text-dark);
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    padding: 100px 0;
    background: var(--white);
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: center;
    padding: 2rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.step:hover {
    transform: translateX(10px);
    box-shadow: var(--box-shadow);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-main);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.step-description {
    color: var(--text-light);
    line-height: 1.8;
}

.step-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

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

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

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

.testimonial-stars {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-main);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

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

.author-role {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* ========================================
   Tech Stack Section
   ======================================== */
.tech-stack {
    padding: 80px 0;
    background: var(--white);
}

.tech-badges {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.tech-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--gradient-soft);
    border-radius: 50px;
    font-weight: 600;
    color: var(--primary-purple);
    transition: var(--transition);
}

.tech-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(123, 44, 191, 0.2);
}

.tech-icon {
    font-size: 1.5rem;
}

/* ========================================
   Download CTA Section
   ======================================== */
.download-cta {
    padding: 100px 0;
    background: var(--gradient-main);
    color: var(--white);
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.store-button {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.store-button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.store-icon {
    font-size: 2.5rem;
}

.store-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.store-label {
    font-size: 0.75rem;
    opacity: 0.8;
}

.store-name {
    font-size: 1.25rem;
    font-weight: 700;
}

.qr-code {
    margin-top: 3rem;
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: var(--white);
    border-radius: 12px;
    margin: 0 auto 1rem;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    width: 100%;
    height: 100%;
}

.qr-grid div {
    background: var(--primary-purple);
    border-radius: 2px;
}

.qr-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-tagline {
    opacity: 0.8;
    font-size: 0.875rem;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-company,
.footer-address,
.footer-link {
    opacity: 0.8;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.footer-link a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link a:hover {
    color: var(--primary-pink);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    opacity: 0.7;
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

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

/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-main);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(123, 44, 191, 0.3);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(123, 44, 191, 0.4);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* Scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease-out;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */

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

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-image {
        order: -1;
    }

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

    .phone-frame {
        width: 250px;
        height: 500px;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a:not(.btn-primary-small) {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .step {
        grid-template-columns: auto 1fr;
    }

    .step-icon {
        display: none;
    }
}

/* Mobile */
@media (max-width: 640px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .phone-frame {
        width: 200px;
        height: 400px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .features-grid,
    .screenshots-slider,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-subtitle {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .store-button {
        width: 100%;
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* Extra small devices */
@media (max-width: 380px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .phone-frame {
        width: 180px;
        height: 360px;
    }

    .container {
        padding: 0 15px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.no-scroll {
    overflow: hidden;
}