/* assets/css/style.css */

:root {
    /* Light Theme Glass Variables */
    --bg-gradient: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 50%, #ede9fe 100%);
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --glass-hover: rgba(255, 255, 255, 0.6);
    
    --text-main: #1e293b;
    --text-muted: #475569;
    --primary: #4f46e5;
    --primary-glow: rgba(79, 70, 229, 0.4);
    --danger: #ef4444;
    --success: #10b981;
    --transition: all 0.3s ease;
}

html.dark {
    /* Dark Theme Glass Variables */
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #020617 100%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --glass-hover: rgba(255, 255, 255, 0.1);
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #818cf8;
    --primary-glow: rgba(129, 140, 248, 0.4);
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-main);
    transition: background 0.4s ease, color 0.4s ease;
    min-height: 100vh;
}

.app-container { 
    display: flex; 
    min-height: 100vh; 
}

/* --- Glass Sidebar --- */
.sidebar {
    width: 260px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    transition: var(--transition);
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    padding: 0 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-shadow: 0 0 12px var(--primary-glow);
}

.nav-links { 
    list-style: none; 
    flex-grow: 1;
    overflow-y: auto;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    border-left: 4px solid transparent;
    font-weight: 500;
}

.nav-links li a:hover,
.nav-links li a.active {
    background: var(--glass-hover);
    border-left-color: var(--primary);
    color: var(--text-main);
}

.nav-links li a i {
    width: 20px;
    text-align: center;
}

/* --- Main Content & Top Bar --- */
.main-content { 
    flex: 1; 
    display: flex; 
    flex-direction: column; 
    overflow-x: hidden;
}

.top-bar {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
    animation: slideDown 0.4s ease;
}

.theme-toggle {
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-main);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.6rem;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover { 
    background: var(--glass-hover); 
    box-shadow: 0 0 15px var(--primary-glow);
}

html.light .fa-moon { display: none; }
html.dark .fa-sun { display: none; }

.content {
    padding: 2rem;
    animation: fadeInUp 0.4s ease;
}

/* --- Glass Cards & Panels --- */
.card, .glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.card:hover, .glass-panel:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.15);
}

/* --- Glass Forms & Inputs --- */
input, select, textarea, .glass-input, .glass-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-main);
    margin-bottom: 1rem;
    transition: var(--transition);
    outline: none;
    backdrop-filter: blur(4px);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
    background: rgba(255, 255, 255, 0.08);
}

/* Fix dropdown options readability in glassmorphism */
option {
    background: var(--bg-gradient);
    color: #000; /* Fallback for native select dropdowns */
}
html.dark option {
    color: #fff;
    background: #0f172a;
}

/* --- Glass Buttons --- */
.btn, .btn-glass {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    color: #fff;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn:hover, .btn-glass:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 6px 20px var(--primary-glow); 
}

/* --- Glass Tables --- */
table, .glass-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1rem 0;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

th { 
    background: rgba(255, 255, 255, 0.04); 
    color: var(--text-muted);
    font-weight: 600;
}

tr:hover td {
    background: var(--glass-hover);
}

.responsive-table { overflow-x: auto; }
.grid-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }

/* Alerts / Badges */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
}
.alert.success { background: rgba(16, 185, 129, 0.1); color: var(--success); border-color: var(--success); }
.alert.info { background: rgba(56, 189, 248, 0.1); color: #38bdf8; border-color: #38bdf8; }
.alert.danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); border-color: var(--danger); }

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}