/* ==========================================================================
   HostCouponCodes Design System & Glassmorphism Theme Engine (2026)
   ========================================================================== */

:root {
    /* Color Palette - Light Mode */
    --brand-primary: #2563eb;
    --brand-primary-hover: #1d4ed8;
    --brand-secondary: #7c3aed;
    --brand-accent: #0284c7;
    --brand-success: #10b981;
    --brand-warning: #f59e0b;
    --brand-danger: #ef4444;
    
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-subtle: #f1f5f9;
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-subtle: #94a3b8;
    
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-border: rgba(226, 232, 240, 0.8);
    
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(226, 232, 240, 0.8);
    --glass-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --glass-shadow-hover: 0 20px 40px -12px rgba(37, 99, 235, 0.18), 0 8px 16px -4px rgba(37, 99, 235, 0.1);
    
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(226, 232, 240, 0.7);
    --card-hover-border: rgba(37, 99, 235, 0.4);
    
    --badge-glow-bg: rgba(37, 99, 235, 0.08);
    --badge-glow-border: rgba(37, 99, 235, 0.2);
    
    --hero-glow: radial-gradient(circle at 50% -20%, rgba(37, 99, 235, 0.15) 0%, rgba(124, 58, 237, 0.08) 35%, transparent 70%);
    --gradient-brand: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-text: linear-gradient(135deg, #1e293b 0%, #2563eb 50%, #7c3aed 100%);
    
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    
    --nav-height: 75px;
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    /* Color Palette - Dark Mode */
    --brand-primary: #3b82f6;
    --brand-primary-hover: #60a5fa;
    --brand-secondary: #8b5cf6;
    --brand-accent: #38bdf8;
    --brand-success: #34d399;
    --brand-warning: #fbbf24;
    --brand-danger: #f87171;
    
    --bg-body: #0b0f19;
    --bg-surface: #111827;
    --bg-subtle: #1f2937;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    
    --nav-bg: rgba(11, 15, 25, 0.95);
    --nav-border: rgba(255, 255, 255, 0.08);
    
    --glass-bg: rgba(17, 24, 39, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.5), 0 5px 15px -5px rgba(0, 0, 0, 0.3);
    --glass-shadow-hover: 0 25px 50px -12px rgba(59, 130, 246, 0.3), 0 10px 20px -5px rgba(59, 130, 246, 0.2);
    
    --card-bg: rgba(17, 24, 39, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover-border: rgba(59, 130, 246, 0.5);
    
    --badge-glow-bg: rgba(59, 130, 246, 0.15);
    --badge-glow-border: rgba(59, 130, 246, 0.3);
    
    --hero-glow: radial-gradient(circle at 50% -20%, rgba(59, 130, 246, 0.25) 0%, rgba(139, 92, 246, 0.15) 40%, transparent 75%);
    --gradient-brand: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --gradient-text: linear-gradient(135deg, #ffffff 0%, #60a5fa 50%, #a78bfa 100%);
    
    --input-bg: #1f2937;
    --input-border: #374151;
}

/* Base Body Theme Styles */
body {
    background-color: var(--bg-body) !important;
    color: var(--text-main);
}

/* Controlled smooth transition on manual theme toggle */
html.theme-animating,
html.theme-animating body,
html.theme-animating .glass-card,
html.theme-animating .glass-panel,
html.theme-animating .site-header {
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease !important;
}

/* Glassmorphism Utility Classes */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    backface-visibility: hidden;
}

.glass-card:hover {
    transform: translateY(-6px) translateZ(0);
    border-color: var(--card-hover-border);
    box-shadow: var(--glass-shadow-hover);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity 0.35s ease;
}

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

/* Dynamic Gradient Text */
.animated-gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% auto;
    animation: textShimmer 6s ease infinite;
}

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

/* Pill Badges with Glow */
.glass-badge {
    background: var(--badge-glow-bg);
    border: 1px solid var(--badge-glow-border);
    color: var(--brand-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 6px 14px;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.72rem;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.1);
    animation: pulseBadge 3s ease-in-out infinite;
}

@keyframes pulseBadge {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

/* Buttons Shimmer & Interactive Effects */
.btn-glow {
    position: relative;
    background: var(--brand-primary);
    color: #ffffff !important;
    font-weight: 700;
    border-radius: 12px;
    padding: 10px 22px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-glow:hover {
    background: var(--brand-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.45);
}

.btn-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 50%;
    height: 200%;
    background: linear-gradient(
        60deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(25deg);
    transition: all 0.6s ease;
}

.btn-glow:hover::after {
    left: 120%;
}

/* Theme Switcher Button */
.theme-toggle-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--glass-shadow);
    font-size: 1.1rem;
    outline: none;
}

.theme-toggle-btn:hover {
    transform: rotate(15deg) scale(1.08);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
}

.theme-toggle-btn i {
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

/* Card Zoom Effect */
.img-zoom-container {
    overflow: hidden;
    position: relative;
}

.img-zoom-container img {
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.glass-card:hover .img-zoom-container img {
    transform: scale(1.06);
}

/* Ambient Radial Glow Container */
.ambient-glow-bg {
    background: var(--hero-glow);
}

/* Form Controls Dark/Light Support */
input, select, textarea {
    background-color: var(--input-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--input-border) !important;
    transition: border-color 0.2s ease, background-color var(--transition-speed) ease;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--brand-primary) !important;
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15) !important;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-body);
}
::-webkit-scrollbar-thumb {
    background: var(--text-subtle);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--brand-primary);
}