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

:root {
    /* LIGHT THEME (DEFAULT) */
    --bg-main: #f8f9fa;
    --text-primary: #212529;
    --text-muted: #6c757d;
    --glass-bg: #ffffff;
    --glass-border: rgba(0, 0, 0, 0.125);
    
    --nav-bg: #212529; /* Keep nav dark as in old style */
    --nav-text: #ffffff;
    
    --accent-blue: #0d6efd;
    --accent-purple: #0d6efd;
    --hero-bg-color: #f8f9fa;
    
    --card-shadow: 0 .125rem .25rem rgba(0,0,0,.075);
    --card-shadow-hover: 0 .5rem 1rem rgba(0,0,0,.15);
}

[data-theme="dark"] {
    /* DARK THEME (NEW GLASSMORPHISM) */
    --bg-main: #0B0F19;
    --text-primary: #FFFFFF;
    --text-muted: #A0ABBA;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --nav-bg: rgba(11, 15, 25, 0.75);
    --nav-text: #ffffff;
    
    --accent-blue: #00D2FF;
    --accent-purple: #9D4EDD;
    
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 210, 255, 0.2);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Ensure muted text is visible in both modes */
.text-muted {
    color: var(--text-muted) !important;
}

/* Glassmorphism Utilities (Adaptive) */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.glass-nav {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    transition: background-color 0.3s ease;
}

/* Gradient Text (Only gradient in dark mode, solid blue in light mode) */
.gradient-text {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    border: none;
    color: white;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.4);
    color: white;
}

.btn-outline-primary {
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
    transition: all 0.3s ease;
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--accent-blue);
    color: var(--bg-main);
    transform: translateY(-2px);
}

/* Nav Links Animation */
.navbar-nav .nav-link {
    position: relative;
    color: var(--text-muted) !important;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: var(--nav-text) !important;
}

/* The hover line effect */
.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after, .navbar-nav .nav-link.active::after {
    width: 100%;
}

.navbar-nav .btn-primary::after {
    display: none;
}
.navbar-nav .btn-primary {
    color: white !important;
}

/* Form Inputs styling */
.form-control, .form-select {
    background-color: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
}
.form-control:focus, .form-select:focus {
    background-color: var(--glass-bg);
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.25rem rgba(0, 210, 255, 0.25);
    color: var(--text-primary);
}

/* Fix placeholder colors in dark mode */
[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted);
}

/* Hero Section Updates */
.hero-bg {
    min-height: 500px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
    background-size: cover;
    background-position: center;
}

/* Dark mode hero uses radial gradient, light mode uses the UoM image */
:root .hero-bg {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), 
                url('https://uom.lk/sites/default/files/styles/juicebox_large/public/textile/gallery/fashion_show/2016/unnamed%20%287%29.jpg?itok=tbWUAirk');
    background-size: cover;
    background-position: center;
}
:root .hero-bg .gradient-text {
    /* In light mode hero, the text should be white since the background is dark */
    background: none;
    -webkit-text-fill-color: white;
    color: white;
}
:root .hero-bg .text-white-50 {
    color: rgba(255,255,255,0.7) !important;
}

[data-theme="dark"] .hero-bg {
    background: radial-gradient(circle at top right, rgba(157, 78, 221, 0.2), transparent 40%),
                radial-gradient(circle at bottom left, rgba(0, 210, 255, 0.15), transparent 40%);
}

/* Glass Event Cards */
.glass-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.glass-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--accent-blue);
}

.uni-logo {
    height: 45px !important;    
    width: auto !important;     
    display: block;
}

.navbar-brand {
    display: flex !important;
    align-items: center !important;
    padding-top: 5px;
    padding-bottom: 5px;
    font-size: 1.4rem; 
    color: white !important;
}

@media (max-width: 768px) {
    .uni-logo {
        height: 35px !important; 
    }
}

/* Theme Toggle Button */
#theme-toggle {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s ease;
    padding: 0 10px;
    display: flex;
    align-items: center;
}
#theme-toggle:hover {
    transform: scale(1.1);
}

/* Ensure text inside glass cards adapts correctly */
:root .glass-card .text-white, :root .glass-panel .text-white {
    color: var(--text-primary) !important;
}