/* GravityTeknoloji - CSS Değişkenleri (Dinamik Light/Dark Mode + Siyah/Elektrik Mavisi) */
:root {
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --font-hero: 'Plus Jakarta Sans', 'Inter', sans-serif;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    --navbar-height: 80px;
    --container-max: 1200px;
    --section-padding: clamp(4rem, 8vw, 7rem);
}

/* Karanlık Mod ve Varsayılan (Siyah Derin Uzay & Elektrik Mavisi) */
[data-theme="dark"],
:root:not([data-theme="light"]) {
    --bg-primary: #05070c;
    --bg-secondary: #0a0e17;
    --bg-card: rgba(13, 18, 30, 0.85);
    --bg-card-hover: rgba(22, 30, 48, 0.95);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #3b82f6;
    --accent-secondary: #2563eb;
    --accent-tertiary: #38bdf8;
    --accent-gradient: linear-gradient(135deg, #3b82f6, #2563eb, #38bdf8);
    --border-color: rgba(59, 130, 246, 0.18);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 20px 60px rgba(59, 130, 246, 0.2);
    --navbar-bg: rgba(5, 7, 12, 0.85);
    --navbar-bg-scrolled: rgba(5, 7, 12, 0.96);
    --navbar-text-shadow: 0 1px 12px rgba(0, 0, 0, 0.9);
    --hero-overlay: rgba(5, 7, 12, 0.3);
}

/* Aydınlık Mod (Temiz Beyaz/Slate Zemin & Elektrik Mavisi) */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.92);
    --bg-card-hover: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --accent-primary: #2563eb;
    --accent-secondary: #1d4ed8;
    --accent-tertiary: #0284c7;
    --accent-gradient: linear-gradient(135deg, #2563eb, #1d4ed8, #0284c7);
    --border-color: rgba(37, 99, 235, 0.15);
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 32px rgba(37, 99, 235, 0.1);
    --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
    --navbar-bg: rgba(248, 250, 252, 0.82);
    --navbar-bg-scrolled: rgba(248, 250, 252, 0.96);
    --navbar-text-shadow: 0 1px 12px rgba(255, 255, 255, 0.9);
    --hero-overlay: rgba(248, 250, 252, 0.04);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}