/* ================================================
   Phantom Offset — Landing Page
   Selaras tema dashboard "KeyPanel Pro"
   Deep Navy #0A0D1A + Electric Violet #7C3AED + Neon Cyan #06B6D4
   ================================================ */

:root {
    --kp-bg: #0A0D1A;
    --kp-card: rgba(15, 17, 30, 0.92);
    --kp-card-hover: rgba(20, 22, 38, 0.95);
    --kp-border: rgba(30, 35, 64, 0.6);
    --kp-border-accent: rgba(124, 58, 237, 0.35);
    --kp-text: #e2e8f0;
    --kp-muted: #64748b;
    --kp-accent: #7C3AED;
    --kp-accent-light: #9F67FF;
    --kp-cyan: #06B6D4;
    --kp-success: #10B981;
    --kp-radius: 12px;
    --kp-radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--kp-bg);
    color: var(--kp-text);
    overflow-x: hidden;
}

/* ── Background ambience ──────────────────────── */
.kp-ambience {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(60% 50% at 80% -5%, rgba(124, 58, 237, 0.12), transparent 70%),
        radial-gradient(45% 40% at 5% 10%, rgba(6, 182, 212, 0.08), transparent 70%),
        var(--kp-bg);
}

/* Subtle grid texture */
.kp-ambience::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(124, 58, 237, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 58, 237, 0.04) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
}

/* ── Header ──────────────────────────────────── */
#site-header {
    border-bottom: 1px solid transparent;
}
#site-header.scrolled {
    background: rgba(10, 13, 26, 0.8);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--kp-border);
}

.nav-link {
    color: var(--kp-muted);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}
.nav-link:hover { color: var(--kp-text); }
.nav-link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 0; height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--kp-accent), var(--kp-accent-light));
    transition: width 0.25s ease;
}
.nav-link:hover::after { width: 100%; }

.lang-active {
    background: var(--kp-accent);
    color: #fff;
}

/* ── Mobile menu ─────────────────────────────── */
.mobile-menu {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    background: rgba(10, 13, 26, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--kp-border);
}
.mobile-menu.active { max-height: 420px; opacity: 1; }

.mobile-link {
    display: block;
    padding: 10px 12px;
    border-radius: var(--kp-radius-sm);
    color: var(--kp-muted);
    font-weight: 500;
    transition: all 0.2s ease;
}
.mobile-link:hover { color: var(--kp-text); background: rgba(124, 58, 237, 0.08); }

/* ── Hero glow ───────────────────────────────── */
.hero-glow {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(40% 35% at 50% 35%, rgba(124, 58, 237, 0.22), transparent 70%),
        radial-gradient(30% 30% at 70% 60%, rgba(6, 182, 212, 0.12), transparent 70%);
    filter: blur(10px);
}

/* ── Typography ──────────────────────────────── */
.gradient-text {
    background: linear-gradient(135deg, var(--kp-accent-light), var(--kp-accent) 55%, var(--kp-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ── Cards (kp-card) ─────────────────────────── */
.kp-card {
    background: var(--kp-card);
    border: 1px solid var(--kp-border);
    border-radius: var(--kp-radius);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.kp-card:hover {
    border-color: var(--kp-border-accent);
    box-shadow: 0 10px 40px rgba(124, 58, 237, 0.10);
    transform: translateY(-3px);
}

/* ── Glass card ──────────────────────────────── */
.glass-card {
    background: rgba(17, 20, 34, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--kp-radius);
    padding: 24px;
    transition: border-color 0.3s ease, transform 0.3s ease;
}
.glass-card:hover {
    border-color: var(--kp-border-accent);
    transform: translateY(-3px);
}

/* ── Buttons ─────────────────────────────────── */
.btn-violet {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--kp-accent), var(--kp-accent-light));
    color: #fff;
    font-weight: 600;
    border-radius: var(--kp-radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.btn-violet:hover {
    box-shadow: 0 0 25px rgba(124, 58, 237, 0.45);
    transform: translateY(-2px);
    color: #fff;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: 1px solid var(--kp-border);
    color: var(--kp-text);
    font-weight: 600;
    border-radius: var(--kp-radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.btn-outline:hover {
    border-color: var(--kp-accent);
    color: var(--kp-accent-light);
    background: rgba(124, 58, 237, 0.06);
}

.shadow-glow-violet { box-shadow: 0 0 22px rgba(124, 58, 237, 0.4); }

/* ── Badges ──────────────────────────────────── */
.badge-undetect {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--kp-success);
    border: 1px solid rgba(16, 185, 129, 0.3);
    backdrop-filter: blur(4px);
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(124, 58, 237, 0.1);
    color: var(--kp-accent-light);
    border: 1px solid var(--kp-border-accent);
}

/* ── Pricing card ────────────────────────────── */
.kp-price-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--kp-card);
    border: 1px solid var(--kp-border);
    border-radius: var(--kp-radius);
    padding: 28px 24px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.kp-price-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    border-radius: var(--kp-radius) var(--kp-radius) 0 0;
    background: linear-gradient(90deg, var(--kp-accent), var(--kp-accent-light));
    opacity: 0;
    transition: opacity 0.3s ease;
}
.kp-price-card:hover {
    border-color: var(--kp-border-accent);
    box-shadow: 0 12px 40px rgba(124, 58, 237, 0.12);
    transform: translateY(-4px);
}
.kp-price-card:hover::before { opacity: 1; }

.kp-price-popular {
    border-color: var(--kp-border-accent);
    box-shadow: 0 0 0 1px rgba(124, 58, 237, 0.2), 0 10px 40px rgba(124, 58, 237, 0.12);
}
.kp-price-popular::before { opacity: 1; }

.kp-price-badge {
    position: absolute;
    top: -12px;
    right: 16px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3px;
    padding: 4px 12px;
    border-radius: 999px;
    color: #fff;
    background: linear-gradient(135deg, var(--kp-accent), var(--kp-cyan));
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}