/* ========================================================
   Renaissance - Smart GPS Attendance Management System
   Unified Enterprise Design System & Global Stylesheet
   ======================================================== */

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

:root {
    /* Modern Slate Neutrals */
    --slate-50:  #f8fafc;
    --slate-100: #f1f5f9;
    --slate-150: #eef2f6;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    /* Primary Brand - Deep Royal Purple / Indigo (Faculty Portal) */
    --primary-950: #0f0728;
    --primary-900: #1e0847;
    --primary-850: #260d57;
    --primary-800: #2e1065;
    --primary-700: #3b1c6e;
    --primary-600: #4a154b;
    --primary-500: #581c87;
    --primary-100: #ede9fe;
    --primary-50:  #f5f3ff;

    /* Secondary Brand - Modern Indigo */
    --secondary-900: #1e1b4b;
    --secondary-800: #312e81;
    --secondary-700: #3730a3;
    --secondary-600: #4338ca;
    --secondary-500: #4f46e5;
    --secondary-400: #6366f1;
    --secondary-300: #818cf8;
    --secondary-200: #a5b4fc;
    --secondary-100: #e0e7ff;
    --secondary-50:  #eef2ff;

    /* Accent Palette - Vibrant Purple */
    --accent-700: #6d28d9;
    --accent-600: #7c3aed;
    --accent-500: #8b5cf6;
    --accent-400: #a78bfa;
    --accent-300: #c4b5fd;
    --accent-light: #ede9fe;
    --accent-50: #faf5ff;

    /* Institutional Admin Accents (Amber / Gold) */
    --admin-gold: #f59e0b;
    --admin-gold-hover: #d97706;
    --admin-gold-dark: #b45309;
    --admin-gold-light: #fef3c7;
    --admin-gold-bg: #fffbeb;
    --admin-gold-border: #fde68a;
    --admin-gold-glow: rgba(245, 158, 11, 0.28);

    /* Surfaces */
    --surface-bg: #f8fafc;
    --surface-card: #ffffff;
    --surface-card-hover: #ffffff;
    --surface-border: #e2e8f0;
    --surface-border-subtle: #f1f5f9;
    --surface-border-hover: #cbd5e1;
    --surface-elevated: #ffffff;

    /* Text Hierarchy */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-subtle: #94a3b8;
    --text-inverted: #ffffff;
    --text-inverted-muted: rgba(255, 255, 255, 0.72);

    /* Semantic States */
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #065f46;
    --success-accent: #10b981;
    --success-hover: #059669;

    --warning-bg: #fffbeb;
    --warning-border: #fde68a;
    --warning-text: #92400e;
    --warning-accent: #f59e0b;
    --warning-hover: #d97706;

    --danger-bg: #fff1f2;
    --danger-border: #fecdd3;
    --danger-text: #9f1239;
    --danger-accent: #f43f5e;
    --danger-hover: #e11d48;

    --info-bg: #eff6ff;
    --info-border: #bfdbfe;
    --info-text: #1e40af;
    --info-accent: #3b82f6;

    /* Radii */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Elevation Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.25);
    --shadow-glow-indigo: 0 0 20px rgba(99, 102, 241, 0.25);
    --shadow-glow-amber: 0 0 20px rgba(245, 158, 11, 0.25);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 16px;
    height: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    background-color: var(--surface-bg);
    color: var(--text-primary);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Custom Sleek Scrollbar */
::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--slate-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--slate-400);
}

a {
    color: var(--secondary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-700);
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.18rem; }
h4 { font-size: 1.05rem; }
h5 { font-size: 0.95rem; }
h6 { font-size: 0.85rem; }

p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.55;
}

/* Typography & Utility Helpers */
.text-muted { color: var(--text-muted) !important; }
.text-danger { color: var(--danger-accent) !important; }
.text-success { color: var(--success-accent) !important; }
.text-warning { color: var(--warning-accent) !important; }
.text-info { color: var(--info-accent) !important; }
.text-bold { font-weight: 600 !important; }
.text-bolder { font-weight: 700 !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-left { text-align: left !important; }

.font-mono {
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace !important;
}

.text-xs { font-size: 0.75rem !important; }
.text-sm { font-size: 0.85rem !important; }
.text-md { font-size: 0.95rem !important; }
.text-lg { font-size: 1.125rem !important; }
.text-xl { font-size: 1.25rem !important; }

/* Layout Wrappers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.landing-body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.08) 0%, rgba(248, 250, 252, 1) 90%);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.05); }
}