/* ===========================
   CSS Variables
   =========================== */
:root {
    --primary: #1E3A5F;
    --primary-light: #2A4A73;
    --primary-dark: #152B47;
    --accent: #00BCD4;
    --accent-light: #26C6DA;
    --accent-dark: #0097A7;
    --text: #1a1a2e;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --bg: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #f1f5f9;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ===========================
   Container
   =========================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: 1.2rem; }

.text-accent { color: var(--accent); }

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 10px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    gap: 8px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.35);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-accent:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--border);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 188, 212, 0.05);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}
.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
    border-radius: 12px;
}

/* ===========================
   Navbar
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
}

.navbar:not(.scrolled) .logo {
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    padding: 4px 0;
}

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

.nav-links a:hover {
    color: #fff;
}

.nav-links a:hover::after {
    width: 100%;
}

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

.nav-cta {
    display: flex;
    gap: 12px;
}

.navbar:not(.scrolled) .nav-cta .btn-outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.35);
}
.navbar:not(.scrolled) .nav-cta .btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition);
}

.navbar.scrolled .mobile-toggle span {
    background: var(--primary);
}

/* ===========================
   Hero
   =========================== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 70%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(0, 188, 212, 0.12) 0%, transparent 60%);
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg), transparent);
    z-index: -1;
}

.hero-inner {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.hero-content {
    max-width: 680px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 188, 212, 0.15);
    color: var(--accent-light);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 24px;
    border: 1px solid rgba(0, 188, 212, 0.25);
}

.hero h1 {
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-desc {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1.125rem;
    line-height: 1.7;
    max-width: 540px;
    margin-bottom: 36px;
}

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

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: all var(--transition);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

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

.stat-text strong {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

.stat-text span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   Section Common
   =========================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(0, 188, 212, 0.1);
    color: var(--accent-dark);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.0625rem;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.feature-card:hover {
    border-color: rgba(0, 188, 212, 0.3);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(0, 188, 212, 0.08);
    border-radius: 14px;
    margin-bottom: 20px;
    color: var(--accent);
    transition: all var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--accent);
    color: #fff;
}

.feature-card h3 {
    margin-bottom: 10px;
    color: var(--primary);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ===========================
   Document Flow
   =========================== */
.document-flow {
    padding: 100px 0;
    background: var(--bg-light);
}

.flow-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 20px 0;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    max-width: 200px;
    position: relative;
}

.flow-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 16px;
}

.flow-step-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 20px;
    margin-bottom: 16px;
    color: var(--primary);
    transition: all var(--transition);
}

.flow-step:hover .flow-step-icon {
    border-color: var(--accent);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.15);
    transform: translateY(-4px);
}

.flow-step h3 {
    margin-bottom: 6px;
    font-size: 1.1rem;
}

.flow-step p {
    color: var(--text-light);
    font-size: 0.875rem;
    line-height: 1.5;
    padding: 0 8px;
}

.flow-arrow {
    display: flex;
    align-items: center;
    padding-top: 72px;
    color: var(--accent);
    flex-shrink: 0;
}

/* ===========================
   Why Us
   =========================== */
.why-us {
    padding: 100px 0;
    background: var(--bg);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.why-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: all var(--transition);
}

.why-card:hover {
    border-color: rgba(0, 188, 212, 0.3);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.why-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(0, 188, 212, 0.06);
    border-radius: 50%;
    margin: 0 auto 20px;
}

.why-card h3 {
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.why-card p {
    color: var(--text-light);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 50%;
    height: 140%;
    background: radial-gradient(ellipse, rgba(0, 188, 212, 0.1) 0%, transparent 60%);
}

.cta-inner {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-inner h2 {
    color: #fff;
    margin-bottom: 16px;
    font-size: clamp(1.75rem, 4vw, 2.25rem);
}

.cta-inner p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.0625rem;
    max-width: 520px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===========================
   Footer
   =========================== */
.footer {
    padding: 60px 0 0;
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.6;
    max-width: 280px;
}

.footer-links h4 {
    color: #fff;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
}

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

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ===========================
   Animations
   =========================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .why-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .flow-steps {
        flex-wrap: wrap;
        gap: 16px;
    }

    .flow-arrow {
        padding-top: 0;
    }

    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===========================
   Responsive - Mobile
   =========================== */
@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    /* Mobile menu */
    .nav-links.active,
    .nav-cta.active {
        display: flex;
    }

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

    .nav-links.active {
        flex-direction: column;
        width: 100%;
        order: 3;
        gap: 0;
        padding: 16px 0 8px;
        border-top: 1px solid var(--border);
        margin-top: 12px;
    }

    .nav-links.active a {
        color: var(--text);
        padding: 12px 0;
    }

    .nav-cta.active {
        width: 100%;
        order: 4;
        padding-bottom: 8px;
        gap: 10px;
    }

    .hero {
        padding: 130px 0 80px;
        min-height: auto;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }

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

    .hero-actions .btn {
        width: 100%;
    }

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

    .why-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .flow-steps {
        flex-direction: column;
        align-items: center;
    }

    .flow-arrow {
        transform: rotate(90deg);
        padding: 0;
        margin: 8px 0;
    }

    .flow-step {
        max-width: 280px;
    }

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

    .section-header {
        margin-bottom: 40px;
    }

    .features,
    .document-flow,
    .why-us,
    .cta-section {
        padding: 70px 0;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .cta-actions .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .why-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 1.75rem;
    }

    .container {
        padding: 0 16px;
    }
}