/* ===========================
   BETON Ops — Dark Theme
   =========================== */

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --bg-usp: #0f1510;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --accent: #00e676;
    --accent-hover: #00c853;
    --accent-glow: rgba(0, 230, 118, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1200px;
    --radius: 8px;
    --transition: 0.25s ease;
}

/* ===========================
   RESET & BASE
   =========================== */

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

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

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===========================
   CONTAINER
   =========================== */

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===========================
   HEADER
   =========================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.logo span {
    color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
    border-radius: var(--radius);
    transition: all var(--transition);
    text-transform: uppercase;
}

.btn-primary {
    background: var(--accent);
    color: #000;
    padding: 12px 28px;
    min-height: 44px;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-header {
    font-size: 13px;
    padding: 10px 24px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* ===========================
   HERO
   =========================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 80px;
    overflow: hidden;
}

/* Animated gradient orb behind hero */
.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 230, 118, 0.08) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: hero-pulse 6s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes hero-pulse {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.15); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(36px, 5.5vw, 64px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.5px;
    margin-bottom: 24px;
}

.hero h1 .accent {
    color: var(--accent);
    text-shadow: 0 0 40px rgba(0, 230, 118, 0.25);
}

.hero-sub {
    max-width: 680px;
    margin: 0 auto 40px;
    color: var(--text-secondary);
    font-size: clamp(16px, 2vw, 18px);
    line-height: 1.8;
}

.btn-hero {
    padding: 16px 40px;
    font-size: 15px;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    width: 28px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    transition: border-color var(--transition);
}

.scroll-indicator:hover {
    border-color: var(--accent);
}

.scroll-indicator span {
    display: block;
    width: 4px;
    height: 10px;
    background: var(--accent);
    border-radius: 2px;
    animation: scroll-bounce 1.8s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(8px); }
}

/* Abstract grid background */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 100%);
    pointer-events: none;
}

/* ===========================
   SECTIONS (shared)
   =========================== */

.section {
    padding: 100px 0;
}

.section h2 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.3px;
}

/* ===========================
   INTRO
   =========================== */

.intro {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.intro-text {
    max-width: 800px;
    color: var(--text-secondary);
    font-size: clamp(16px, 1.8vw, 18px);
    line-height: 1.9;
}

/* ===========================
   SERVICES
   =========================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 16px;
}

.card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    border-color: rgba(0, 230, 118, 0.25);
    box-shadow: 0 8px 40px rgba(0, 230, 118, 0.08), 0 0 0 1px rgba(0, 230, 118, 0.1);
    transform: translateY(-4px);
}

/* Staggered fade-in for cards */
.card.fade-up:nth-child(1) { transition-delay: 0s; }
.card.fade-up:nth-child(2) { transition-delay: 0.15s; }
.card.fade-up:nth-child(3) { transition-delay: 0.3s; }

.card-accent {
    width: 36px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.card ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.card li {
    position: relative;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.7;
}

/* ===========================
   AUDIENCE
   =========================== */

.audience {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.audience-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 40px;
    margin-top: 8px;
}

.audience-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 17px;
    color: var(--text-secondary);
}

.check {
    color: var(--accent);
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===========================
   USP
   =========================== */

.usp {
    background: var(--bg-usp);
    border-top: 1px solid rgba(0, 230, 118, 0.08);
    border-bottom: 1px solid rgba(0, 230, 118, 0.08);
}

.usp-inner {
    max-width: 800px;
}

.usp-text {
    color: var(--text-secondary);
    font-size: clamp(16px, 1.8vw, 18px);
    line-height: 1.8;
    margin-bottom: 32px;
}

.usp-highlight {
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 700;
    line-height: 1.4;
    color: var(--accent);
    padding: 28px 0;
    border-top: 1px solid rgba(0, 230, 118, 0.15);
    border-bottom: 1px solid rgba(0, 230, 118, 0.15);
    margin-bottom: 32px;
}

.usp-closing {
    color: var(--text-secondary);
    font-size: clamp(16px, 1.8vw, 18px);
    line-height: 1.8;
}

/* ===========================
   FOOTER
   =========================== */

.footer {
    padding: 100px 0 60px;
    text-align: center;
    border-top: 1px solid var(--border-subtle);
}

.footer h2 {
    font-size: clamp(24px, 3.5vw, 38px);
    font-weight: 700;
    margin-bottom: 32px;
}

.email-link {
    display: inline-block;
    font-size: clamp(22px, 4vw, 36px);
    font-weight: 700;
    color: var(--accent);
    padding: 16px 32px;
    border: 2px solid rgba(0, 230, 118, 0.25);
    border-radius: var(--radius);
    transition: all var(--transition);
    margin-bottom: 48px;
}

.email-link:hover {
    background: rgba(0, 230, 118, 0.08);
    border-color: var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
}

.copyright {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.6;
}

/* ===========================
   RESPONSIVE: TABLET
   =========================== */

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===========================
   RESPONSIVE: MOBILE
   =========================== */

@media (max-width: 768px) {

    body {
        font-size: 16px;
    }

    .section {
        padding: 72px 0;
    }

    /* Header */
    .btn-header {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding: 140px 20px 80px;
    }

    .btn-hero {
        width: 100%;
        max-width: 400px;
    }

    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* Audience */
    .audience-list {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    /* Footer */
    .email-link {
        font-size: 20px;
        padding: 14px 24px;
        width: 100%;
        max-width: 400px;
    }

    .footer {
        padding: 72px 0 48px;
    }
}

/* ===========================
   ANIMATIONS (Fade-in on scroll)
   =========================== */

.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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