/* DGR Suite - SaaS Website - Dark Theme with Animated Grid */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #080b14;
    --dark-2: #0c1021;
    --dark-light: #141829;
    --dark-lighter: #1c2139;
    --text: #e8ecf4;
    --text-muted: #7a82a0;
    --border: rgba(99, 102, 241, 0.12);
    --border-light: rgba(99, 102, 241, 0.25);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, #c084fc 100%);
    --glow: 0 0 30px rgba(99, 102, 241, 0.15);
}

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

html { scroll-behavior: smooth; }

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

a { color: var(--primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--secondary); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   ANIMATED GRID BACKGROUND
   ============================================ */
.grid-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.grid-bg canvas {
    width: 100%;
    height: 100%;
}

/* Fallback CSS grid when canvas not available */
.grid-bg-css {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 100%);
}

/* Floating Orbs */
.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
    animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(99, 102, 241, 0.08);
    top: -10%;
    left: -10%;
    animation-duration: 25s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(139, 92, 246, 0.06);
    bottom: -10%;
    right: -10%;
    animation-duration: 30s;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: rgba(6, 182, 212, 0.04);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-duration: 35s;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(40px, 30px) scale(1.05); }
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0.75rem 0;
    background: rgba(8, 11, 20, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s;
}

.navbar.scrolled {
    background: rgba(8, 11, 20, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

.logo i {
    font-size: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover { color: var(--text); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s;
    border-radius: 1px;
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-buttons { display: flex; gap: 0.75rem; }

/* Mobile Menu */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 0.6rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.35);
    color: white;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(99, 102, 241, 0.08);
    color: var(--text);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
    color: var(--text);
}

.btn-lg {
    padding: 1rem 2.25rem;
    font-size: 1rem;
    border-radius: 0.75rem;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 850px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-light);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease;
}

.hero-badge i { font-size: 0.65rem; }

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 .gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stat {
    text-align: center;
    padding: 1.5rem 2rem;
    background: rgba(20, 24, 41, 0.6);
    border: 1px solid var(--border);
    border-radius: 1rem;
    backdrop-filter: blur(10px);
    min-width: 140px;
    transition: all 0.3s;
}

.hero-stat:hover {
    border-color: var(--border-light);
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

.hero-stat h3 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat p {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 0;
    font-weight: 500;
}

/* ============================================
   SECTIONS COMMON
   ============================================ */
section {
    position: relative;
    z-index: 1;
}

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

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ============================================
   FEATURES
   ============================================ */
.features {
    padding: 7rem 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.6rem 1.25rem;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--border);
    border-radius: 9999px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

.tab-btn:hover {
    border-color: var(--border-light);
    color: var(--text);
}

.tab-btn.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
    color: var(--primary-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: rgba(20, 24, 41, 0.5);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-light);
    box-shadow: var(--glow);
    background: rgba(20, 24, 41, 0.8);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
    position: relative;
}

.feature-icon.blue {
    background: rgba(99, 102, 241, 0.12);
    color: var(--primary-light);
}

.feature-icon.purple {
    background: rgba(139, 92, 246, 0.12);
    color: var(--secondary);
}

.feature-icon.cyan {
    background: rgba(6, 182, 212, 0.12);
    color: var(--accent);
}

.feature-icon.green {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success);
}

.feature-icon.orange {
    background: rgba(245, 158, 11, 0.12);
    color: var(--warning);
}

.feature-icon.red {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger);
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

.feature-card .credit-cost {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1rem;
    padding: 0.3rem 0.75rem;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 9999px;
    font-size: 0.75rem;
    color: var(--primary-light);
    font-weight: 500;
}

/* ============================================
   PRICING
   ============================================ */
.pricing {
    padding: 7rem 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: rgba(20, 24, 41, 0.5);
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    transition: all 0.4s;
}

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

.pricing-card.popular {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.1);
}

.pricing-card.popular::before {
    content: 'En Populer';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    padding: 0.35rem 1.25rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

.pricing-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.pricing-card .price {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin: 0.75rem 0;
}

.pricing-card.popular .price {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-card .price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
}

.pricing-card .price-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.pricing-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.pricing-features li {
    padding: 0.55rem 0;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.pricing-features li i {
    color: var(--primary-light);
    font-size: 0.8rem;
    width: 18px;
    text-align: center;
}

.pricing-features li i.fa-xmark {
    color: var(--text-muted);
    opacity: 0.4;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
    padding: 7rem 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 100%);
}

.faq-grid {
    max-width: 750px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: rgba(20, 24, 41, 0.5);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: border-color 0.3s;
}

.faq-item:hover,
.faq-item.open {
    border-color: var(--border-light);
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: color 0.2s;
}

.faq-question:hover { color: var(--primary-light); }

.faq-question i {
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: transform 0.3s;
}

.faq-item.open .faq-question i {
    transform: rotate(180deg);
    color: var(--primary-light);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-answer-inner {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ============================================
   CTA
   ============================================ */
.cta {
    padding: 7rem 0;
    text-align: center;
}

.cta-box {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid var(--border-light);
    border-radius: 1.5rem;
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient);
}

.cta-box h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-box p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    position: relative;
    z-index: 1;
}

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

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: color 0.2s;
}

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

/* ============================================
   AUTH PAGES
   ============================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.auth-card {
    background: rgba(20, 24, 41, 0.8);
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 2.75rem;
    width: 100%;
    max-width: 440px;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.6s ease;
}

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

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(8, 11, 20, 0.6);
    border: 1px solid var(--border);
    border-radius: 0.6rem;
    color: var(--text);
    font-size: 0.9rem;
    transition: all 0.2s;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.alert {
    padding: 0.85rem 1rem;
    border-radius: 0.6rem;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.alert-success {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.auth-footer {
    text-align: center;
    margin-top: 1.75rem;
    padding-top: 1.75rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
}

.form-row label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.form-row input[type="checkbox"] {
    accent-color: var(--primary);
}

/* ============================================
   DOWNLOAD PAGE
   ============================================ */
.download-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

.download-card {
    background: rgba(20, 24, 41, 0.8);
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 3rem;
    text-align: center;
    max-width: 520px;
    width: 100%;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.6s ease;
}

.download-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-card h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.download-card > p {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.download-info {
    background: rgba(8, 11, 20, 0.6);
    border: 1px solid var(--border);
    padding: 1.25rem;
    border-radius: 0.75rem;
    margin-bottom: 2rem;
}

.download-info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
}

.download-info-row span:first-child {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.download-info-row span:last-child {
    font-weight: 600;
    font-size: 0.85rem;
}

.download-info-row .credit-val {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: rgba(8, 11, 20, 0.6);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    color: var(--text);
    transition: all 0.3s;
    text-align: left;
}

.download-btn:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.06);
    transform: translateX(4px);
    color: var(--text);
}

.download-btn i {
    font-size: 1.75rem;
    width: 36px;
    text-align: center;
    color: var(--text-muted);
}

.download-btn:hover i {
    color: var(--primary-light);
}

.download-btn-text strong {
    display: block;
    font-size: 0.95rem;
}

.download-btn-text span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Stagger children animation */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.06s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.12s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.18s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.24s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.30s; }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.36s; }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.42s; }
.stagger-children.visible > *:nth-child(9) { transition-delay: 0.48s; }
.stagger-children.visible > *:nth-child(10) { transition-delay: 0.54s; }
.stagger-children.visible > *:nth-child(11) { transition-delay: 0.60s; }
.stagger-children.visible > *:nth-child(12) { transition-delay: 0.66s; }

.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 768px) {
    .mobile-toggle { display: block; }

    .nav-links,
    .nav-buttons { display: none; }

    .nav-links.open,
    .nav-buttons.open { display: flex; }

    .navbar .container {
        flex-wrap: wrap;
    }

    .nav-links.open {
        flex-direction: column;
        width: 100%;
        padding: 1rem 0;
        gap: 1rem;
        order: 3;
    }

    .nav-buttons.open {
        width: 100%;
        justify-content: center;
        padding-bottom: 0.5rem;
        order: 4;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

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

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .hero-stat {
        width: 100%;
        max-width: 280px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .features-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 0.5rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .pricing-card.popular {
        order: -1;
    }

    .cta-box {
        padding: 3rem 1.5rem;
    }

    .cta-box h2 {
        font-size: 1.75rem;
    }

    .footer .container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

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

    .btn-lg {
        padding: 0.85rem 1.5rem;
        font-size: 0.9rem;
    }

    .auth-card {
        padding: 2rem 1.5rem;
    }

    .download-card {
        padding: 2rem 1.5rem;
    }
}