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

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #22c55e;
    --background: #f3f4f6;
    --surface: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #e0e7ff 0%, #f3f4f6 100%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 480px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    margin-bottom: 2rem;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-main);
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s;
    background: #fff;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.btn {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.98);
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

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

.btn-danger:hover {
    background-color: var(--danger-hover);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

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

.btn-logout {
    margin-top: 20px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid #e5e7eb;
}

.btn-logout:hover {
    background: #f9fafb;
    color: var(--text-main);
}

/* Action Area */
.action-area {
    text-align: center;
    margin: 2rem 0;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.status-text {
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.big-btn {
    font-size: 1.25rem;
    padding: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* History Table */
.history-section {
    margin-top: 3rem;
}

.history-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th {
    background: #f8fafc;
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid #e2e8f0;
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-main);
}

tr:last-child td {
    border-bottom: none;
}

.empty-state {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-align: center;
}
.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}