/* ══════════════════════════════════════════════
   Sniprion Design System
   Inspired by: Stripe, Vercel, Linear
   ══════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
    --bg-0: #05050a;
    --bg-1: #08080f;
    --bg-2: #0c0c14;
    --bg-3: #10101a;
    --bg-4: #16162a;
    --surface: #111119;
    --surface-hover: #161620;
    --border-0: #18182a;
    --border-1: #22223a;
    --border-2: #2c2c44;
    --accent: #f97316;
    --accent-hover: #fb923c;
    --accent-subtle: rgba(249, 115, 22, 0.06);
    --accent-border: rgba(249, 115, 22, 0.15);
    --accent-glow: rgba(249, 115, 22, 0.08);
    --green: #22c55e;
    --green-subtle: rgba(34, 197, 94, 0.1);
    --red: #ef4444;
    --yellow: #eab308;
    --blue: #3b82f6;
    --t-0: #f2f2f8;
    --t-1: #c8c8d8;
    --t-2: #8888a0;
    --t-3: #5c5c78;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --max-w: 1120px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    background: var(--bg-0);
    color: var(--t-1);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s;
}

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

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

ul,
ol {
    list-style: none;
}

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

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

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

.text-muted {
    color: var(--t-2);
}

.mt-8 {
    margin-top: 8px;
}

.mt-12 {
    margin-top: 12px;
}

.mt-16 {
    margin-top: 16px;
}

.mt-24 {
    margin-top: 24px;
}

.mt-32 {
    margin-top: 32px;
}

.mt-48 {
    margin-top: 48px;
}

.mt-64 {
    margin-top: 64px;
}

.gap-16 {
    gap: 16px;
}

/* ── Typography ── */
h1,
h2,
h3,
h4,
h5 {
    color: var(--t-0);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 {
    font-size: clamp(40px, 5.5vw, 64px);
    font-weight: 800;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 800;
    letter-spacing: -0.025em;
}

h3 {
    font-size: 18px;
}

h4 {
    font-size: 15px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 17px;
    color: var(--t-2);
    max-width: 560px;
    line-height: 1.7;
}

.section-desc.centered {
    margin: 0 auto;
}

/* ── Sections ── */
.section {
    padding: 110px 0;
}

.section-alt {
    background: var(--bg-1);
}

.section-border {
    border-top: 1px solid var(--border-0);
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-family: var(--font);
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(249, 115, 22, 0.15);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25), 0 0 0 1px rgba(249, 115, 22, 0.2);
    color: #fff;
}

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

.btn-secondary:hover {
    border-color: var(--border-2);
    background: var(--surface);
    color: var(--t-0);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 15px;
}

.btn-full {
    width: 100%;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn-lg svg {
    width: 18px;
    height: 18px;
}

/* ── Nav ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(5, 5, 10, 0.8);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--border-0);
    height: 64px;
}

.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--t-0);
    font-weight: 700;
    font-size: 16px;
}

.nav-brand img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.nav-brand span {
    letter-spacing: -0.02em;
}

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

.nav-links a {
    color: var(--t-3);
    font-size: 13px;
    font-weight: 500;
    transition: color 0.15s;
}

.nav-links a:hover {
    color: var(--t-0);
}

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

.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--t-1);
    cursor: pointer;
    padding: 8px;
}

/* ── Cards ── */
.card {
    background: var(--bg-2);
    border: 1px solid var(--border-0);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    border-color: var(--border-1);
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.card-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-subtle);
    border: 1px solid var(--accent-border);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.card-icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--accent);
    fill: none;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.card h3 {
    margin-bottom: 8px;
}

.card p {
    font-size: 14px;
    color: var(--t-2);
    line-height: 1.65;
}

/* ── Grids ── */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

/* ── Footer ── */
.footer {
    padding: 48px 0 36px;
    border-top: 1px solid var(--border-0);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--t-0);
    font-weight: 700;
    font-size: 15px;
}

.footer-brand img {
    width: 30px;
    height: 30px;
    border-radius: 7px;
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    color: var(--t-3);
    font-size: 13px;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--t-1);
}

.footer-copy {
    text-align: center;
    font-size: 12px;
    color: var(--t-3);
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-0);
}

/* ── Modal ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(12px);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

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

.modal-box {
    background: var(--surface);
    border: 1px solid var(--border-0);
    border-radius: var(--radius-xl);
    padding: 36px 32px;
    max-width: 400px;
    width: 100%;
    margin: 20px;
}

.modal-close {
    float: right;
    background: none;
    border: none;
    color: var(--t-3);
    font-size: 18px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.modal-close:hover {
    background: var(--accent-subtle);
    color: var(--t-0);
}

.modal-box h2 {
    font-size: 20px;
    margin-bottom: 6px;
    clear: both;
}

.modal-box .modal-desc {
    font-size: 13.5px;
    color: var(--t-2);
    margin-bottom: 20px;
}

/* ── Forms ── */
.form-group {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--t-2);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 11px 14px;
    background: var(--bg-0);
    border: 1px solid var(--border-0);
    border-radius: var(--radius-sm);
    color: var(--t-0);
    font-family: var(--font);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
}

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

.form-input::placeholder {
    color: var(--t-3);
}

.form-error {
    color: var(--red);
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.form-note {
    text-align: center;
    font-size: 11px;
    color: var(--t-3);
    margin-top: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.form-note svg {
    width: 12px;
    height: 12px;
    stroke: var(--t-3);
    fill: none;
}

/* ── Spinner ── */
.spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ── Terminal Mockup ── */
.terminal {
    background: var(--bg-2);
    border: 1px solid var(--border-0);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.4);
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    background: var(--bg-3);
    border-bottom: 1px solid var(--border-0);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.r {
    background: #ff5f57;
}

.terminal-dot.y {
    background: #febc2e;
}

.terminal-dot.g {
    background: #28c840;
}

.terminal-title {
    margin-left: 8px;
    font-size: 11px;
    color: var(--t-3);
    font-weight: 500;
}

.terminal-body {
    padding: 20px;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.8;
    color: var(--green);
}

.terminal-body .dim {
    color: var(--t-3);
}

.terminal-body .orange {
    color: var(--accent);
}

.terminal-body .white {
    color: var(--t-0);
}

.terminal-body .yellow {
    color: var(--yellow);
}

/* ── Checklist ── */
.checklist li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 0;
    font-size: 14px;
    color: var(--t-1);
}

.check-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.check-icon svg {
    width: 18px;
    height: 18px;
    stroke: var(--green);
    fill: none;
    stroke-width: 2;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .grid-3 {
        grid-template-columns: 1fr 1fr;
    }

    .grid-4 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .grid-4 {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 72px 0;
    }

    .footer-inner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

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

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

    .btn-lg {
        padding: 12px 24px;
        font-size: 14px;
    }
}