/* ===== CSS VARIABLES ===== */
:root {
    --primary: #0A2540;
    --primary-light: #1A3A5C;
    --accent: #00D4FF;
    --accent-dark: #00A3CC;
    --text-dark: #1A1A1A;
    --text-light: #6B7280;
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --border: #E5E7EB;
    
    --font-display: 'DM Serif Display', serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-dark);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--primary);
}

.nav-cta {
    padding: 10px 24px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(10, 37, 64, 0.15);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    padding: 180px 0 120px;
    overflow: hidden;
    background: linear-gradient(135deg, #0A2540 0%, #1A3A5C 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 255, 0.2) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 64px;
    line-height: 1.1;
    color: white;
    margin-bottom: 24px;
    font-weight: 400;
}

.gradient-text {
    background: linear-gradient(135deg, #00D4FF 0%, #00A3CC 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    max-width: 600px;
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--primary);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large {
    padding: 20px 40px;
    font-size: 20px;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    margin-bottom: 60px;
}

.section-header.centered {
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent-dark);
    margin-bottom: 16px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 48px;
    line-height: 1.2;
    color: var(--text-dark);
    font-weight: 400;
}

/* ===== PROBLEM SECTION ===== */
.problem-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.problem-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--accent);
}

.problem-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

.problem-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.problem-solution {
    text-align: center;
    padding: 40px;
}

.large-text {
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--primary);
    font-weight: 400;
}

/* ===== HOW IT WORKS SECTION ===== */
.how-section {
    padding: 100px 0;
    background: white;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.step-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition);
}

.step-card:hover {
    background: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.step-number {
    font-family: var(--font-display);
    font-size: 56px;
    color: var(--accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary);
}

.step-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== PRICING SECTION ===== */
.pricing-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #0A2540 0%, #1A3A5C 100%);
}

.pricing-card {
    background: white;
    border-radius: 16px;
    padding: 60px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.pricing-header {
    text-align: center;
    margin-bottom: 48px;
}

.pricing-content {
    margin-bottom: 48px;
}

.pricing-details {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.price-item {
    text-align: center;
}

.price-amount {
    font-family: var(--font-display);
    font-size: 56px;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.price-period {
    font-size: 16px;
    color: var(--text-light);
}

.price-plus {
    font-size: 40px;
    color: var(--text-light);
    font-weight: 300;
}

.pricing-explanation {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.pricing-explanation p {
    margin-bottom: 16px;
    color: var(--text-light);
}

.pricing-highlight {
    font-weight: 600;
    color: var(--primary) !important;
}

.pricing-stat {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--accent);
}

.stat-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.pricing-stat p {
    color: var(--text-dark);
    font-size: 18px;
}

/* ===== CASE STUDY SECTION ===== */
.case-study-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.case-study-card {
    background: white;
    padding: 60px;
    border-radius: 16px;
    border: 1px solid var(--border);
}

.case-intro {
    font-size: 20px;
    line-height: 1.7;
    color: var(--text-light);
    margin-bottom: 48px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.result-item {
    text-align: center;
    padding: 32px;
    background: var(--bg-light);
    border-radius: 12px;
}

.result-number {
    font-family: var(--font-display);
    font-size: 48px;
    color: var(--accent-dark);
    margin-bottom: 8px;
}

.result-label {
    font-size: 16px;
    color: var(--text-light);
}

.case-conclusion {
    text-align: center;
    font-size: 20px;
    color: var(--primary);
}

/* ===== FOR SECTION ===== */
.for-section {
    padding: 100px 0;
    background: white;
}

.for-content {
    max-width: 800px;
    margin: 0 auto;
}

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

.check-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
    transition: var(--transition);
}

.check-item:hover {
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.check-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.check-item p {
    color: var(--text-dark);
    font-size: 18px;
    line-height: 1.6;
}

/* ===== ABOUT SECTION ===== */
.about-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-light);
    font-size: 19px;
    line-height: 1.7;
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #0A2540 0%, #1A3A5C 100%);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: 48px;
    color: white;
    margin-bottom: 24px;
    font-weight: 400;
}

.cta-content p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin-bottom: 16px;
}

.cta-sub {
    font-size: 18px !important;
    opacity: 0.7;
}

.cta-buttons {
    margin-top: 40px;
    margin-bottom: 24px;
}

.contact-note {
    margin-top: 32px;
}

.contact-note p {
    font-size: 16px;
}

.contact-note a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent);
    transition: var(--transition);
}

.contact-note a:hover {
    color: white;
    border-color: white;
}

/* ===== FOOTER ===== */
.footer {
    padding: 60px 0 40px;
    background: var(--primary);
    color: rgba(255, 255, 255, 0.7);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 16px;
}

.footer-contact p {
    margin-bottom: 8px;
    font-size: 16px;
}

.footer-contact a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact a:hover {
    color: white;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-header h2 {
        font-size: 36px;
    }
    
    .problem-grid,
    .steps-grid,
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card {
        padding: 40px 24px;
    }
    
    .price-amount {
        font-size: 40px;
    }
    
    .case-study-card {
        padding: 40px 24px;
    }
    
    .cta-content h2 {
        font-size: 36px;
    }
    
    .footer-content {
        flex-direction: column;
    }
}