/**
 * Glassmorphism Design System
 * Bold & Modern glass effects with CSS variables
 */

:root {
    /* Glass Background Variants */
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-bg-light: rgba(255, 255, 255, 0.25);
    --glass-bg-medium: rgba(255, 255, 255, 0.45);
    --glass-bg-solid: rgba(255, 255, 255, 0.85);
    --glass-bg-dark: rgba(30, 42, 107, 0.85);
    --glass-bg-dark-light: rgba(30, 42, 107, 0.6);
    --glass-bg-gold: rgba(212, 175, 55, 0.15);

    /* Blur Values */
    --glass-blur: 12px;
    --glass-blur-light: 8px;
    --glass-blur-heavy: 20px;

    /* Border Colors */
    --glass-border: rgba(255, 255, 255, 0.25);
    --glass-border-light: rgba(255, 255, 255, 0.4);
    --glass-border-strong: rgba(255, 255, 255, 0.6);
    --glass-border-dark: rgba(255, 255, 255, 0.1);

    /* Shadow System */
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
    --glass-shadow-lg: 0 15px 50px rgba(31, 38, 135, 0.18);
    --glass-shadow-xl: 0 25px 70px rgba(31, 38, 135, 0.22);
    --glass-shadow-hover: 0 20px 60px rgba(31, 38, 135, 0.25);
    --glass-shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.25);
    --glass-inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.4);

    /* Gradient Colors */
    --gradient-blue-start: #2c3e95;
    --gradient-blue-end: #1e2a6b;
    --gradient-gold-start: #d4af37;
    --gradient-gold-end: #b8962e;

    /* Animation Timing */
    --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
    --ease-in-out-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* =============================================
   BASE GLASS CLASSES
   ============================================= */

/* Standard Glass */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow), var(--glass-inner-glow);
}

/* Light Glass - More transparent */
.glass-light {
    background: var(--glass-bg-light);
    backdrop-filter: blur(var(--glass-blur-light));
    -webkit-backdrop-filter: blur(var(--glass-blur-light));
    border: 1px solid var(--glass-border-light);
    box-shadow: var(--glass-shadow);
}

/* Medium Glass - Semi-opaque */
.glass-medium {
    background: var(--glass-bg-medium);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border-light);
    box-shadow: var(--glass-shadow), var(--glass-inner-glow);
}

/* Solid Glass - Nearly opaque */
.glass-solid {
    background: var(--glass-bg-solid);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid var(--glass-border-strong);
    box-shadow: var(--glass-shadow-lg), var(--glass-inner-glow);
}

/* Dark Glass - For dark sections */
.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid var(--glass-border-dark);
    box-shadow: var(--glass-shadow-lg);
}

/* Gold Tinted Glass */
.glass-gold {
    background: var(--glass-bg-gold);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(212, 175, 55, 0.3);
    box-shadow: var(--glass-shadow-gold), var(--glass-inner-glow);
}

/* =============================================
   GLASS CARD COMPONENT
   ============================================= */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow), var(--glass-inner-glow);
    transition: all 0.4s var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    transform: translateY(-8px);
    border-color: var(--glass-border-light);
    box-shadow: var(--glass-shadow-hover), var(--glass-inner-glow);
}

/* Interactive glow effect on hover */
.glass-card::before {
    content: '';
    position: absolute;
    top: var(--mouse-y, 50%);
    left: var(--mouse-x, 50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(
        circle,
        rgba(212, 175, 55, 0.2) 0%,
        transparent 60%
    );
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
    z-index: 0;
}

.glass-card:hover::before {
    opacity: 1;
}

.glass-card > * {
    position: relative;
    z-index: 1;
}

/* =============================================
   GLASS BUTTON STYLES
   ============================================= */

.btn-glass {
    background: var(--glass-bg-light);
    backdrop-filter: blur(var(--glass-blur-light));
    -webkit-backdrop-filter: blur(var(--glass-blur-light));
    border: 1px solid var(--glass-border-light);
    color: var(--gradient-blue-start);
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s var(--ease-out-expo);
    box-shadow: var(--glass-shadow);
}

.btn-glass:hover {
    background: var(--glass-bg-medium);
    border-color: var(--glass-border-strong);
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-lg);
}

.btn-glass-primary {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-blue-end) 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    box-shadow: 0 8px 25px rgba(44, 62, 149, 0.35);
}

.btn-glass-primary:hover {
    box-shadow: 0 12px 35px rgba(44, 62, 149, 0.45);
    transform: translateY(-3px) scale(1.02);
}

.btn-glass-gold {
    background: linear-gradient(135deg, var(--gradient-gold-start) 0%, var(--gradient-gold-end) 100%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #1a1f36;
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.35);
}

.btn-glass-gold:hover {
    box-shadow: 0 12px 35px rgba(212, 175, 55, 0.5);
    transform: translateY(-3px) scale(1.02);
}

/* =============================================
   GLASS INPUT FIELDS
   ============================================= */

.input-glass {
    background: var(--glass-bg-medium);
    backdrop-filter: blur(var(--glass-blur-light));
    -webkit-backdrop-filter: blur(var(--glass-blur-light));
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px 20px;
    font-size: 16px;
    color: #1a1f36;
    transition: all 0.3s var(--ease-out-expo);
    width: 100%;
}

.input-glass::placeholder {
    color: rgba(26, 31, 54, 0.5);
}

.input-glass:focus {
    outline: none;
    background: var(--glass-bg-solid);
    border-color: var(--gradient-blue-start);
    box-shadow: 0 0 0 4px rgba(44, 62, 149, 0.1), var(--glass-shadow);
}

.input-glass:hover:not(:focus) {
    border-color: var(--glass-border-light);
}

/* =============================================
   GLASS BADGE / PILL
   ============================================= */

.badge-glass {
    display: inline-block;
    background: var(--glass-bg-light);
    backdrop-filter: blur(var(--glass-blur-light));
    -webkit-backdrop-filter: blur(var(--glass-blur-light));
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.badge-glass-primary {
    background: linear-gradient(135deg, var(--gradient-blue-start), var(--gradient-blue-end));
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.badge-glass-gold {
    background: linear-gradient(135deg, var(--gradient-gold-start), var(--gradient-gold-end));
    border-color: rgba(255, 255, 255, 0.3);
    color: #1a1f36;
}

/* =============================================
   GLASS ICON CONTAINER
   ============================================= */

.icon-glass {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--glass-bg-light);
    backdrop-filter: blur(var(--glass-blur-light));
    -webkit-backdrop-filter: blur(var(--glass-blur-light));
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    box-shadow: var(--glass-shadow);
    transition: all 0.4s var(--spring);
}

.icon-glass:hover {
    transform: scale(1.1);
    box-shadow: var(--glass-shadow-lg);
}

.icon-glass-gradient {
    background: linear-gradient(135deg, var(--gradient-blue-start), var(--gradient-gold-start));
    border: none;
    color: white;
    box-shadow: 0 10px 30px rgba(44, 62, 149, 0.3);
}

.icon-glass-gradient:hover {
    box-shadow: 0 15px 40px rgba(44, 62, 149, 0.4);
}

/* =============================================
   GLASS SECTION OVERLAY
   ============================================= */

.section-glass-overlay {
    position: relative;
}

.section-glass-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-bg-dark-light);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    z-index: 0;
}

.section-glass-overlay > * {
    position: relative;
    z-index: 1;
}

/* =============================================
   GRADIENT TEXT
   ============================================= */

.text-gradient {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-gold-start) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-gold {
    background: linear-gradient(135deg, var(--gradient-gold-start) 0%, var(--gradient-gold-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* =============================================
   ANIMATED BORDERS
   ============================================= */

.border-gradient-animated {
    position: relative;
    border-radius: 20px;
}

.border-gradient-animated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    padding: 2px;
    background: linear-gradient(
        135deg,
        var(--gradient-blue-start),
        var(--gradient-gold-start),
        var(--gradient-blue-start)
    );
    background-size: 200% 200%;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: gradientRotate 4s linear infinite;
    pointer-events: none;
}

@keyframes gradientRotate {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* =============================================
   SHIMMER EFFECT
   ============================================= */

.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: left 0.6s ease;
}

.shimmer:hover::after {
    left: 100%;
}

/* =============================================
   FALLBACKS
   ============================================= */

@supports not (backdrop-filter: blur(12px)) {
    .glass,
    .glass-light,
    .glass-medium,
    .glass-card {
        background: rgba(255, 255, 255, 0.92);
    }

    .glass-solid {
        background: rgba(255, 255, 255, 0.97);
    }

    .glass-dark {
        background: rgba(30, 42, 107, 0.95);
    }

    .input-glass {
        background: rgba(255, 255, 255, 0.95);
    }
}

/* =============================================
   MOBILE OPTIMIZATION
   ============================================= */

@media (max-width: 768px) {
    :root {
        --glass-blur: 10px;
        --glass-blur-light: 6px;
        --glass-blur-heavy: 14px;
    }

    .glass-card:hover {
        transform: translateY(-4px);
    }
}

@media (max-width: 480px) {
    :root {
        --glass-blur: 8px;
        --glass-blur-light: 5px;
        --glass-blur-heavy: 10px;
    }

    .glass-card {
        border-radius: 16px;
    }
}