:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --input-bg: rgba(15, 23, 42, 0.8);
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-color);
    background-image: radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.15), transparent 25%),
                      radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.15), transparent 25%);
    background-attachment: fixed;
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.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: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: #cbd5e1;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

/* Authentication Pages */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 100vh;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.75rem;
    font-weight: 700;
}

.auth-links {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
}
.alert-danger {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
}
.alert-success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success-color);
    color: #6ee7b7;
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.user-nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tile:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px 0 rgba(59, 130, 246, 0.2);
}

.tile img {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    border-radius: 12px;
}

.tile h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.tile-actions {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 10;
}

.tile:hover .tile-actions {
    opacity: 1;
}

.icon-placeholder {
    width: 64px;
    height: 64px;
    background: var(--input-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
    border: 1px solid var(--glass-border);
}