/* ============================================
   Chargebotic — Global Styles
   Inspired by Boston Dynamics Orbit
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- Custom Properties ---- */
:root {
    --color-bg: #0a0a0a;
    --color-bg-elevated: #111111;
    --color-bg-card: #141414;
    --color-border: #1e1e1e;
    --color-border-hover: #333;
    --color-accent: #f97316;
    --color-accent-hover: #fb923c;
    --color-accent-dim: rgba(249, 115, 22, 0.15);
    --color-text: #e8e8e8;
    --color-text-secondary: #999;
    --color-text-muted: #666;
    --color-text-faint: #444;
    --color-white: #ffffff;
    --color-error: #ef4444;
    --color-success: #22c55e;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1200px;
    --nav-height: 72px;
    --section-padding: 120px;
    --section-padding-mobile: 64px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* ---- Layout ---- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: var(--section-padding) 0;
}

/* ---- Navigation ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    background: transparent;
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--color-border);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: -0.5px;
}

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

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
    letter-spacing: 0.2px;
}

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

.nav-links a.active {
    color: var(--color-white);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-accent);
    color: #000 !important;
    font-size: 13px !important;
    font-weight: 700 !important;
    padding: 10px 22px;
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
}

.nav-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.3);
}

.nav-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    color: var(--color-text-secondary) !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    padding: 10px 22px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
    cursor: pointer;
    font-family: var(--font-family);
}

.nav-cta-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent) !important;
}

/* Mobile hamburger */
.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-hamburger.open span:nth-child(2) {
    opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Hero ---- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 32px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(249, 115, 22, 0.06) 0%, transparent 60%),
        radial-gradient(circle at 50% 50%, rgba(249, 115, 22, 0.03) 0%, transparent 50%);
    z-index: 0;
}

/* ---- Hero Video Background ---- */
.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 10, 0.4) 0%,
        rgba(10, 10, 10, 0.6) 50%,
        rgba(10, 10, 10, 0.9) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.08;
    color: var(--color-white);
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.hero-title .accent {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto 48px;
}

.hero-ctas {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent);
    color: #000;
    font-family: var(--font-family);
    font-size: 15px;
    font-weight: 700;
    padding: 16px 36px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.3);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: 15px;
    font-weight: 600;
    padding: 16px 36px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-arrow {
    transition: transform 0.2s ease;
}

.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow {
    transform: translateX(4px);
}

/* ---- Section Headers ---- */
.section-label {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    line-height: 1.15;
    color: var(--color-white);
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 640px;
}

.section-header {
    margin-bottom: 64px;
}

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

.section-header.centered .section-subtitle {
    margin: 0 auto;
}

/* ---- Cards ---- */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 36px;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.card-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
}

.card-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

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

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.grid-6 {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

/* ---- Stats Banner ---- */
.stats-banner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 40px 24px;
    text-align: center;
}

.stat-number {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 900;
    color: var(--color-accent);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

/* ---- Verticals Grid ---- */
.vertical-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px 16px;
    text-align: center;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.vertical-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.vertical-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.vertical-name {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: 4px;
}

.vertical-desc {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ---- Steps / Approach ---- */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.step {
    text-align: center;
    padding: 32px 16px;
}

.step-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 16px;
}

.step-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.step-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-muted);
}

/* ---- Team ---- */
.team-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 36px;
    transition: border-color 0.3s ease;
}

.team-card:hover {
    border-color: var(--color-border-hover);
}

.team-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 4px;
}

.team-role {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.team-bio {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ---- Tags / Chips ---- */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: 100px;
    letter-spacing: 0.3px;
}

/* ---- Timeline ---- */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: 48px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -40px;
    top: 6px;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    border: 3px solid var(--color-bg);
    z-index: 1;
}

.timeline-date {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.timeline-text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 640px;
}

.timeline-tags {
    margin-top: 12px;
}

/* ---- Image Placeholder ---- */
.img-placeholder {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 14px;
    overflow: hidden;
}

.img-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---- Divider ---- */
.divider {
    height: 1px;
    background: var(--color-border);
    margin: 0;
    border: none;
}

/* ---- Footer ---- */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 48px 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-logo {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-white);
}

.footer-text {
    font-size: 13px;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color 0.2s ease;
}

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

/* ---- Access Gate Modal ---- */
.gate-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.gate-overlay.active {
    display: flex;
}

.gate-modal {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 48px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.gate-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.gate-desc {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 28px;
}

.gate-input {
    width: 100%;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-white);
    font-family: var(--font-family);
    font-size: 15px;
    padding: 14px 18px;
    border-radius: 8px;
    text-align: center;
    letter-spacing: 3px;
    outline: none;
    transition: border-color 0.2s ease;
    margin-bottom: 16px;
}

.gate-input:focus {
    border-color: var(--color-accent);
}

.gate-error {
    font-size: 12px;
    color: var(--color-error);
    margin-bottom: 12px;
    display: none;
}

.gate-email-fallback {
    display: none;
    margin-bottom: 16px;
    padding: 16px;
    background: var(--color-bg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.gate-email-fallback p {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.gate-email-row {
    display: flex;
    gap: 8px;
}

.gate-email-input {
    flex: 1;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-white);
    font-family: var(--font-family);
    font-size: 13px;
    padding: 10px 14px;
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s ease;
}

.gate-email-input:focus {
    border-color: var(--color-accent);
}

.gate-email-btn {
    background: var(--color-border-hover);
    color: var(--color-white);
    font-family: var(--font-family);
    font-size: 12px;
    font-weight: 600;
    padding: 10px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s ease;
}

.gate-email-btn:hover {
    background: var(--color-text-muted);
}

.gate-submit {
    width: 100%;
    background: var(--color-accent);
    color: #000;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 700;
    padding: 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.gate-submit:hover {
    background: var(--color-accent-hover);
}

/* ---- Fade-in Animations ---- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ---- Page Hero (inner pages) ---- */
.page-hero {
    padding: calc(var(--nav-height) + 80px) 32px 64px;
    text-align: center;
    position: relative;
}

.page-hero .hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(249, 115, 22, 0.05) 0%, transparent 60%);
    z-index: 0;
}

.page-hero-content {
    position: relative;
    z-index: 1;
}

.page-hero-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 32px;
    transition: opacity 0.2s ease;
}

.page-hero-back:hover {
    opacity: 0.7;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 32px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-hamburger {
        display: block;
    }

    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-6 { grid-template-columns: repeat(2, 1fr); }
    .stats-banner { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }

    .hero {
        padding: 120px 24px 60px;
        min-height: auto;
    }

    .hero-title {
        letter-spacing: -1px;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .grid-6 { grid-template-columns: repeat(2, 1fr); }
    .container { padding: 0 20px; }
}