:root {
    --bg-color: #0f172a;
    /* Slate 900 */
    --card-bg: rgba(30, 41, 59, 0.7);
    /* Slate 800 with transparency */
    --text-primary: #f8fafc;
    /* Slate 50 */
    --text-secondary: #94a3b8;
    /* Slate 400 */
    --accent: #3b82f6;
    /* Blue 500 */
    --accent-hover: #2563eb;
    /* Blue 600 */
    --danger: #ef4444;
    /* Red 500 */
    --success: #10b981;
    /* Emerald 500 */
    --border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(12px);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    background-image: radial-gradient(circle at top right, rgba(59, 130, 246, 0.15), transparent 40%),
        radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 40%);
    background-attachment: fixed;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(to right, #60a5fa, #34d399);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

nav {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent);
    color: white;
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.5);
}

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

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

.glass-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

input,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

select option {
    background-color: var(--bg-card);
    color: var(--text-primary);
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin-top: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

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

th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    body {
        padding: 1rem;
    }
}

/* Loading Toast */
#toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    background-color: var(--accent);
    color: white;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    transform: translateY(150%);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
}

#toast.show {
    transform: translateY(0);
}