/* =====================================================
   CLOUDFLOW - PREMIUM TECH SAAS STYLES
   ===================================================== */

:root {
    --bg-primary: #080710;
    --bg-secondary: #0f0e1a;
    --bg-card: #141324;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --primary: #7c3aed; /* Electric violet */
    --secondary: #3b82f6; /* Cyan blue */
    --accent: #06b6d4; /* Pure cyan */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
    
    --border: rgba(255, 255, 255, 0.05);
    --border-hover: rgba(124, 58, 237, 0.3);
    --border-glow: rgba(124, 58, 237, 0.5);
    
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* =====================================================
   PRELOADER
   ===================================================== */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader-spinner {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.05);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

/* =====================================================
   TYPOGRAPHY & BUTTONS
   ===================================================== */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid rgba(124, 58, 237, 0.2);
    border-radius: var(--radius-full);
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn--primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.25);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(124, 58, 237, 0.35);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn--ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn--ghost:hover {
    border-color: var(--primary);
    color: var(--text-primary);
    background: rgba(124, 58, 237, 0.05);
}

/* =====================================================
   HEADER & NAVIGATION
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(8, 7, 16, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition-fast);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    animation: blob-logo 6s ease-in-out infinite;
}

@keyframes blob-logo {
    0%, 100% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
    50% { border-radius: 70% 30% 50% 50% / 50% 60% 40% 60%; }
}

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

.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

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

/* Lang Selector */
.lang-selector {
    display: flex;
    border-left: 1px solid var(--border);
    padding-left: 20px;
    gap: 10px;
}

.lang-btn {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.lang-btn.active, .lang-btn:hover {
    color: var(--primary);
}

/* Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    width: 24px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

@media (max-width: 850px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 76px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 76px);
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        gap: 36px;
        transition: var(--transition-smooth);
        border-top: 1px solid var(--border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .lang-selector {
        border-left: none;
        padding-left: 0;
        margin-top: 10px;
    }
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 140px;
    padding-bottom: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
}

.glow-orb--1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -10%;
    right: 10%;
}

.glow-orb--2 {
    width: 350px;
    height: 350px;
    background: var(--secondary);
    bottom: 10%;
    left: 5%;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
}

/* =====================================================
   DASHBOARD MOCKUP
   ===================================================== */
.dashboard-section {
    padding-bottom: 100px;
    background: linear-gradient(to bottom, transparent, var(--bg-secondary));
}

.dashboard-preview {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 100px rgba(124,58,237,0.05);
    overflow: hidden;
    position: relative;
    z-index: 2;
}

.dash-header {
    height: 48px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
}

.dash-dots {
    display: flex;
    gap: 6px;
}

.dash-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-glow);
    opacity: 0.5;
}

.dash-dots span:nth-child(1) { background: #ef4444; opacity: 0.8; }
.dash-dots span:nth-child(2) { background: #f59e0b; opacity: 0.8; }
.dash-dots span:nth-child(3) { background: #10b981; opacity: 0.8; }

.dash-title {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: monospace;
}

.dash-actions span {
    display: inline-block;
    width: 16px;
    height: 16px;
    background: var(--border);
    border-radius: var(--radius-sm);
}

.dash-body {
    display: flex;
    min-height: 320px;
}

.dash-sidebar {
    width: 60px;
    border-right: 1px solid var(--border);
    background: rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 20px;
    gap: 16px;
}

.sidebar-item {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-item.active {
    background: rgba(124,58,237,0.1);
    border-color: var(--primary);
}

.sidebar-item span {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    background: var(--text-tertiary);
}

.sidebar-item.active span {
    background: var(--primary);
}

.dash-main {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dash-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

@media (max-width: 600px) {
    .dash-stats {
        grid-template-columns: 1fr;
    }
}

.dash-card {
    padding: 16px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.card-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.card-value {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 4px 0;
}

.card-trend {
    font-size: 0.7rem;
    font-weight: 600;
}

.card-trend.up { color: #10b981; }
.card-trend.down { color: #ef4444; }

.dash-chart-card {
    flex: 1;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.dash-chart-card h5 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.chart-container {
    flex: 1;
    min-height: 140px;
    position: relative;
}

.svg-chart {
    width: 100%;
    height: 100%;
}

.pulsing-dot {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { r: 4px; opacity: 1; }
    50% { r: 8px; opacity: 0.4; }
    100% { r: 4px; opacity: 1; }
}

/* =====================================================
   GLOBAL SECTION GRID LAYOUTS
   ===================================================== */
.features-section, .pricing-section, .faq-section {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--primary);
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* =====================================================
   FEATURES
   ===================================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (max-width: 800px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    padding: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
}

.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(124,58,237,0.05);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon.bg-blue { background: rgba(59,130,246,0.1); color: var(--secondary); }
.feature-icon.bg-purple { background: rgba(124,58,237,0.1); color: var(--primary); }
.feature-icon.bg-cyan { background: rgba(6,182,212,0.1); color: var(--accent); }

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =====================================================
   PRICING
   ===================================================== */
.billing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 30px;
}

.toggle-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-tertiary);
    transition: var(--transition-fast);
}

.toggle-label.active {
    color: var(--text-primary);
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    transition: var(--transition-fast);
}

.toggle-switch::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #ffffff;
    border-radius: 50%;
    top: 3px;
    left: 4px;
    transition: var(--transition-smooth);
}

.toggle-switch.yearly::after {
    left: 22px;
    background: var(--primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: stretch;
}

@media (max-width: 900px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto;
    }
}

.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition-smooth);
}

.pricing-card.featured {
    background: var(--bg-card);
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(124,58,237,0.1);
}

.pricing-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.pricing-card.featured:hover {
    border-color: var(--primary);
    box-shadow: 0 15px 50px rgba(124,58,237,0.2);
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
}

.plan-header {
    margin-bottom: 30px;
}

.plan-header h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.plan-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.price-container {
    display: flex;
    align-items: baseline;
}

.currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.price {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.period {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-left: 4px;
}

.price-custom {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
    flex: 1;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.plan-features li span:first-child {
    color: var(--primary);
    font-weight: bold;
}

.btn-plan {
    width: 100%;
    padding: 12px;
    text-align: center;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    display: block;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-plan.btn--ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-plan.btn--ghost:hover {
    border-color: var(--primary);
    background: rgba(124,58,237,0.05);
}

.btn-plan.btn--primary {
    background: var(--gradient-primary);
    color: #ffffff;
}

.btn-plan.btn--primary:hover {
    opacity: 0.9;
}

/* =====================================================
   FAQ SECTION
   ===================================================== */
.faq-container {
    max-width: 800px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-fast);
}

.faq-question {
    width: 100%;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    outline: none;
}

.faq-icon {
    width: 20px;
    height: 20px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon::before, .faq-icon::after {
    content: '';
    position: absolute;
    background: var(--text-secondary);
    transition: var(--transition-smooth);
}

.faq-icon::before {
    width: 2px;
    height: 14px;
    top: 3px;
    left: 9px;
}

.faq-icon::after {
    width: 14px;
    height: 2px;
    top: 9px;
    left: 3px;
}

.faq-item.active {
    border-color: var(--border-hover);
}

.faq-item.active .faq-icon::before {
    transform: rotate(90deg);
    opacity: 0;
}

.faq-item.active .faq-icon::after {
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0 24px;
}

.faq-answer p {
    padding-bottom: 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

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

@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}