/* ==========================================================================
   DOCUMENTUP AI - LANDING PAGE STYLESHEET (V1.0)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --font-primary: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    
    /* Color Palette */
    --bg-dark: #090d16;
    --bg-card: rgba(18, 24, 40, 0.75);
    --bg-card-hover: rgba(28, 36, 58, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.3);
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.4);
    
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-purple: #a855f7;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-sub: #cbd5e1;
    
    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --shadow-subtle: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 50px -10px rgba(99, 102, 241, 0.25);
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(6, 182, 212, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
}

a {
    color: inherit;
    text-decoration: none;
}

/* --- Container --- */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header / Navigation --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(9, 13, 22, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

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

.logo-brand img {
    height: 42px;
    width: auto;
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.3));
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #4338ca 100%);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background: linear-gradient(135deg, #22bf5b 0%, #0e7569 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.45);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

/* --- Hero Section --- */
.hero {
    padding-top: 170px;
    padding-bottom: 90px;
    text-align: center;
    position: relative;
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.badge-pill .pulse {
    width: 8px;
    height: 8px;
    background-color: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(6, 182, 212, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
}

.text-gradient {
    background: linear-gradient(135deg, #ffffff 30%, #a5b4fc 70%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto 40px;
    font-weight: 400;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* --- Hero Graphic / Preview Card --- */
.hero-preview {
    position: relative;
    max-width: 1040px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    box-shadow: var(--shadow-glow), var(--shadow-subtle);
    overflow: hidden;
    padding: 24px;
    backdrop-filter: blur(12px);
}

.preview-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.preview-title {
    margin-left: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: monospace;
}

.preview-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 768px) {
    .preview-content-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 2.3rem; }
}

.preview-box {
    background: rgba(15, 23, 42, 0.8);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: left;
}

.preview-box-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    color: #a5b4fc;
    margin-bottom: 12px;
}

.mock-pdf-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-left: 3px solid var(--primary);
}

.mock-excel-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.mock-excel-table th, .mock-excel-table td {
    padding: 8px 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    text-align: left;
}

.mock-excel-table th {
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-main);
}

/* --- Features Section --- */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    color: var(--accent-cyan);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    display: block;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.2);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* --- How It Works --- */
.steps-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

@media (max-width: 900px) {
    .steps-wrapper { grid-template-columns: 1fr; }
}

.step-card {
    background: rgba(18, 24, 40, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-cyan) 100%);
    color: #ffffff;
    font-weight: 800;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.step-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

/* --- Pricing / Plans --- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    max-width: 1080px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.15) 0%, rgba(18, 24, 40, 0.85) 100%);
}

.featured-badge {
    position: absolute;
    top: -14px;
    right: 28px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
    color: #ffffff;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.pricing-price {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 24px;
}

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

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-sub);
    margin-bottom: 14px;
}

.pricing-features svg {
    color: var(--accent-emerald);
    flex-shrink: 0;
}

/* --- Floating WhatsApp Widget --- */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    align-items: center;
    gap: 12px;
    background: #25d366;
    color: #ffffff;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.6);
}

.whatsapp-icon {
    width: 26px;
    height: 26px;
    fill: currentColor;
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
    background: rgba(5, 8, 14, 0.9);
    margin-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copy {
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero { padding-top: 130px; }
    .hero-cta-group { flex-direction: column; }
    .btn-lg { width: 100%; }
}