/* ===== CSS Variables ===== */
:root {
    --color-bg: #000000;
    --color-bg-secondary: #0a0a0a;
    --color-bg-tertiary: #111111;
    --color-bg-card: #141414;
    --color-text: #ffffff;
    --color-text-secondary: #a1a1a1;
    --color-text-muted: #666666;
    --color-accent: #F4C430;
    --color-accent-hover: #ffdb4d;
    --color-border: #222222;
    --color-border-light: #333333;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    --container-width: 1200px;
    --section-padding: 120px;
}

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

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ===== Container ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    padding: 16px 0;
    border-bottom-color: var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    color: var(--color-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.25rem;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-fast);
}

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

.nav-cta {
    padding: 12px 24px;
    background: var(--color-text);
    color: var(--color-bg);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

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

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(244, 196, 48, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 20px 48px;
    font-size: 1.1rem;
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 140px 0 var(--section-padding);
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 20%, rgba(244, 196, 48, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-accent) 0%, #ff9500 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 80px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: var(--color-border);
}

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

/* ===== Services Section ===== */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-bg-secondary);
}

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

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-border-light);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.service-card:hover::before {
    opacity: 1;
}

.service-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-border);
    margin-bottom: 24px;
    transition: color var(--transition-medium);
}

.service-card:hover .service-number {
    color: var(--color-accent);
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.service-desc {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.service-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== Process Section ===== */
.process {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 60px;
    right: 60px;
    height: 1px;
    background: linear-gradient(90deg, var(--color-border), var(--color-accent), var(--color-border));
}

.process-step {
    text-align: center;
    position: relative;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--color-accent);
    transition: all var(--transition-medium);
    position: relative;
    z-index: 1;
}

.process-step:hover .step-icon {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: scale(1.1);
    box-shadow: 0 0 40px rgba(244, 196, 48, 0.3);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== Audience Section ===== */
.audience {
    padding: var(--section-padding) 0;
    background: var(--color-bg-secondary);
}

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

.audience-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px;
    transition: all var(--transition-medium);
}

.audience-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.audience-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent) 0%, #ff9500 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-bg);
}

.audience-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.audience-card > p {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.audience-card ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.audience-card ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.audience-card ul li::before {
    content: '→';
    color: var(--color-accent);
    font-weight: 600;
}

/* ===== Results Section ===== */
.results {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.results::before {
    content: '';
    position: absolute;
    top: 50%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(244, 196, 48, 0.1) 0%, transparent 70%);
    transform: translateY(-50%);
    pointer-events: none;
}

.results-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.results-text .section-tag {
    margin-bottom: 16px;
}

.results-text .section-title {
    text-align: left;
    margin-bottom: 16px;
}

.results-text p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.result-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all var(--transition-medium);
}

.result-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.result-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent) 0%, #ff9500 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.result-label {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ===== About Section ===== */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-tertiary) 100%);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
}

.about-text .section-tag {
    margin-bottom: 16px;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #0A66C2;
    font-weight: 600;
    margin-top: 16px;
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: #004182;
    gap: 14px;
}

/* ===== CTA Section ===== */
.cta {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center top, rgba(244, 196, 48, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.cta-note {
    display: block;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 40px;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 350px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.footer-column a {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 12px;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .services-grid,
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 48px;
    }

    .process-timeline::before {
        display: none;
    }

    .results-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .results-text .section-title {
        text-align: center;
    }

    .results-text {
        text-align: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-image {
        max-width: 350px;
        margin: 0 auto;
    }

    .about-text .section-title {
        text-align: center;
    }

    .about-text {
        text-align: center;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-medium);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    .nav-cta {
        display: none;
    }

    .mobile-toggle {
        display: flex;
        z-index: 101;
    }

    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

    .stat-divider {
        width: 50px;
        height: 1px;
    }

    .services-grid,
    .audience-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .service-card,
    .audience-card,
    .result-item {
        padding: 28px;
    }

    .btn {
        padding: 14px 24px;
        width: 100%;
    }

    .btn-large {
        padding: 18px 32px;
    }
}

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

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