/* ========================================================= */
/* FPKN Alumni Association - Master Design System Stylesheet */
/* ========================================================= */

/* 1. CSS Custom Properties / Design Tokens */
:root {
    --primary: #8B0000;
    --primary-rgb: 139, 0, 0;
    --primary-dark: #5C0000;
    --primary-deep: #3D0000;
    --primary-light: #A81B1B;
    
    --secondary: #FDB813;
    --secondary-rgb: 253, 184, 19;
    --secondary-dark: #D4AF37;
    --secondary-deep: #AA820A;
    --secondary-light: #FED766;
    
    --accent: #5C240E;
    --mahogany: #3D1A0A;
    
    --dark-bg: #120401;
    --dark-surface: #1E0602;
    --dark-card: #2B0A03;
    
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-gold: 0 10px 25px -5px rgba(253, 184, 19, 0.35);
    --shadow-burgundy: 0 10px 25px -5px rgba(139, 0, 0, 0.35);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. Global Resets & Typography */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: clip;
    max-width: 100vw;
}

/* Accessible Focus States */
:focus-visible {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

/* Text Selection */
::selection {
    background-color: var(--primary);
    color: var(--secondary);
}

/* 3. Gradient & Color Utilities */
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-gold-text {
    background: linear-gradient(135deg, #FDB813 0%, #FFF3B0 50%, #D4AF37 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-burgundy {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.gradient-gold {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
}

.gradient-hero {
    background: linear-gradient(145deg, #120401 0%, #240804 50%, #4A0A00 100%);
}

/* 4. Glassmorphism Panels */
.glass-effect {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-card-light {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.glass-card-dark {
    background: rgba(18, 4, 1, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(212, 175, 55, 0.25);
}

/* 5. Smooth Micro-Animations */
@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.floating {
    animation: floating 4s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 8px rgba(253, 184, 19, 0.4);
    }
    50% {
        box-shadow: 0 0 24px rgba(253, 184, 19, 0.85);
    }
}

.pulse-glow {
    animation: pulseGlow 2.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.shimmer-bg {
    background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.2) 50%, rgba(255,255,255,0) 100%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* 6. Buttons & Interactive Elements */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 700;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-burgundy);
    opacity: 0.95;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: #200803;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 800;
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
    opacity: 0.95;
}

.btn-secondary:active {
    transform: translateY(0);
}

/* 7. Form Controls & Section Styling */
.form-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border-left: 4px solid var(--primary);
    transition: border-color var(--transition-base);
}

.form-section-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-section-title::before {
    content: "";
    display: block;
    width: 8px;
    height: 8px;
    background: var(--secondary);
    border-radius: 50%;
    box-shadow: 0 0 6px rgba(253, 184, 19, 0.8);
}

.form-input, 
input[type="text"], 
input[type="email"], 
input[type="tel"], 
input[type="password"], 
input[type="number"], 
input[type="date"], 
select, 
textarea {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(139, 0, 0, 0.15) !important;
    outline: none;
}

/* 8. Cards & Metric Tiles */
.stat-card {
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(253, 184, 19, 0.5);
}

.progress-bar {
    height: 8px;
    border-radius: 4px;
    background: var(--gray-200);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 1s ease-in-out;
}

/* 9. Notification Toasts & Alerts */
.notification-toast {
    position: fixed;
    top: 88px;
    right: 20px;
    left: 20px;
    z-index: 99999;
    max-width: 440px;
    margin-left: auto;
    animation: slideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-2xl);
    border-radius: var(--radius-md);
}

@keyframes slideIn {
    from {
        transform: translateY(-20px) scale(0.96);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.alert-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

/* 10. Navigation Active States */
.nav-link {
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2.5px;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    border-radius: 2px;
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* 11. Custom Modern Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #a82020;
    border-radius: 4px;
}

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

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: #a82020 #f1f1f1;
}

/* 12. Print Styles */
@media print {
    .no-print,
    nav,
    footer,
    #alumniChatWidget,
    #pageLoader,
    #globalProcessingLoader,
    .notification-toast {
        display: none !important;
    }
    
    body {
        background: #ffffff !important;
        color: #000000 !important;
        font-size: 11pt;
    }
}