/* ============================================
   VAULT - Password Manager Website
   Color scheme matches the Android app
   ============================================ */

:root {
    /* Primary Colors - matching app theme */
    --primary: #FF6B35;
    --primary-dark: #E55A2B;
    --primary-light: #FF8555;

    /* Background Colors */
    --bg-dark: #0D0D0F;
    --bg-card: #1A1A1E;
    --bg-card-variant: #252529;

    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A5;
    --text-muted: #6B6B70;

    /* Accent Colors */
    --success: #4CAF50;
    --warning: #FFC107;
    --error: #F44336;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #FF8555 100%);
    --gradient-dark: linear-gradient(180deg, #0D0D0F 0%, #1A1A1E 100%);
    --gradient-glow: radial-gradient(circle at center, rgba(255, 107, 53, 0.3) 0%, transparent 70%);

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;
    --card-radius: 16px;
    --button-radius: 12px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::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, 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon .material-icons-round {
    font-size: 24px;
    color: white;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--button-radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: var(--bg-card-variant);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn .material-icons-round {
    font-size: 20px;
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    opacity: 0.5;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 107, 53, 0.1);
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero-badge .material-icons-round {
    font-size: 18px;
}

.hero h1 {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

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

.phone-mockup {
    position: relative;
}

.phone-frame {
    width: 280px;
    height: 580px;
    background: linear-gradient(145deg, #2A2A30 0%, #1A1A1E 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

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

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.phone-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: var(--gradient-glow);
    filter: blur(60px);
    opacity: 0.6;
    z-index: -1;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 80px;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

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

.features {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--card-radius);
    padding: 32px;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 107, 53, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon .material-icons-round {
    font-size: 28px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   SECURITY SECTION
   ============================================ */

.security {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

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

.security-text {
    max-width: 500px;
}

.security-text h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.security-text > p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.security-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.security-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.security-list .material-icons-round {
    color: var(--success);
    font-size: 24px;
    flex-shrink: 0;
    margin-top: 2px;
}

.security-list strong {
    display: block;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.security-list span {
    font-size: 15px;
    color: var(--text-secondary);
}

/* Security Shield Animation */
.security-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-shield {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(255, 107, 53, 0.2);
    animation: pulse 3s ease-in-out infinite;
}

.ring-1 {
    width: 100%;
    height: 100%;
    animation-delay: 0s;
}

.ring-2 {
    width: 75%;
    height: 75%;
    animation-delay: 0.5s;
}

.ring-3 {
    width: 50%;
    height: 50%;
    animation-delay: 1s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.05); }
}

.shield-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(255, 107, 53, 0.4);
    z-index: 1;
}

.shield-icon .material-icons-round {
    font-size: 48px;
    color: white;
}

/* ============================================
   SCREENSHOTS SECTION
   ============================================ */

.screenshots {
    padding: var(--section-padding) 0;
    background: var(--bg-card);
}

.screenshots-slider {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 20px 0;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.screenshots-slider::-webkit-scrollbar {
    display: none;
}

.screenshot-card {
    flex: 0 0 auto;
    width: 220px;
    scroll-snap-align: center;
    text-align: center;
}

.screenshot-card img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    transition: transform var(--transition-normal);
}

.screenshot-card:hover img {
    transform: translateY(-8px);
}

.screenshot-label {
    display: block;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   DOWNLOAD SECTION
   ============================================ */

.download {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
}

.download-card {
    background: linear-gradient(135deg, var(--bg-card-variant) 0%, var(--bg-card) 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 80px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: var(--gradient-glow);
    opacity: 0.3;
    pointer-events: none;
}

.download-content {
    position: relative;
    z-index: 1;
}

.download-content h2 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.download-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.price-tag {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 107, 53, 0.1);
    border: 2px solid var(--primary);
    border-radius: 16px;
    padding: 16px 32px;
    margin-bottom: 24px;
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.price-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.download-buttons {
    margin-bottom: 32px;
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Payment Modal */
.payment-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: 24px;
}

.payment-modal.active {
    opacity: 1;
    visibility: visible;
}

.payment-modal-content {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    max-width: 480px;
    width: 100%;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.payment-modal.active .payment-modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.modal-icon {
    width: 72px;
    height: 72px;
    background: var(--gradient-primary);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.modal-icon .material-icons-round {
    font-size: 36px;
    color: white;
}

.payment-modal-content h3 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.payment-modal-content > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.payment-steps {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

.payment-steps .step {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.payment-steps .step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.after-payment {
    background: rgba(255, 107, 53, 0.1);
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
    text-align: center;
}

.after-payment p {
    margin: 0 0 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.after-payment p:first-child {
    color: var(--primary);
}

.modal-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.modal-note .material-icons-round {
    font-size: 16px;
}

.buy-button {
    padding: 18px 40px;
    font-size: 18px;
}

.purchase-note {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 24px;
}

.purchase-note .material-icons-round {
    font-size: 18px;
}

.store-button.google-play {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #000;
    color: #fff;
    padding: 12px 24px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
}

.store-button.google-play:hover {
    transform: scale(1.05);
    background: #1a1a1a;
    border-color: rgba(255, 255, 255, 0.3);
}

.store-button .play-icon {
    width: 32px;
    height: 32px;
}

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

.store-button .store-label {
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    opacity: 0.9;
}

.store-button .store-name {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.2;
}

.download-info {
    display: flex;
    gap: 32px;
}

.download-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}

.download-info .material-icons-round {
    font-size: 18px;
    color: var(--text-secondary);
}

.download-visual {
    position: relative;
    z-index: 1;
}

.app-icon-large {
    width: 160px;
    height: 160px;
    background: var(--gradient-primary);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 30px 80px rgba(255, 107, 53, 0.4);
}

.app-icon-large .material-icons-round {
    font-size: 80px;
    color: white;
}

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

.footer {
    background: var(--bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    font-size: 15px;
    color: var(--text-secondary);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-bottom .heart {
    color: var(--primary);
}

/* ============================================
   MOBILE MENU
   ============================================ */

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: var(--bg-card);
    z-index: 2000;
    padding: 24px;
    transition: right var(--transition-normal);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-nav-links a {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

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

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

    .hero-image {
        order: -1;
    }

    .phone-frame {
        width: 240px;
        height: 500px;
    }

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

    .security-text {
        max-width: 100%;
    }

    .security-list {
        text-align: left;
    }

    .security-visual {
        order: -1;
    }

    .download-card {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 60px 40px;
    }

    .download-info {
        justify-content: center;
        flex-wrap: wrap;
    }

    .download-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 42px;
    }

    .section-header h2,
    .security-text h2,
    .download-content h2 {
        font-size: 36px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 32px;
    }

    .phone-frame {
        width: 200px;
        height: 420px;
    }

    .download-card {
        padding: 40px 24px;
    }

    .app-icon-large {
        width: 120px;
        height: 120px;
        border-radius: 32px;
    }

    .app-icon-large .material-icons-round {
        font-size: 60px;
    }
}