:root {
    --bg-color: #f0f9ff;
    --text-color: #0f172a;
    --glass-bg: #ffffff;
    --glass-border: #e0f2fe;
    --primary-color: #0284c7;
    --primary-hover: #0369a1;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 1000px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px -10px rgba(0, 119, 230, 0.15);
    animation: fadeIn 0.5s ease-out;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 1.5rem;
}

h1, h2 {
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.39);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

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

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

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 1rem;
}

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

th {
    font-weight: 600;
    color: #94a3b8;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tr {
    transition: background-color 0.2s;
}

tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.actions {
    display: flex;
    gap: 0.5rem;
}

form.inline {
    display: inline;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #cbd5e1;
}

input {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.error-alert {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}