/* ===== Global Styles ===== */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1f2937;
    --light: #f3f4f6;
    --white: #ffffff;
    --border: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== Authentication Pages ===== */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1000px;
    width: 100%;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.auth-box {
    padding: 60px 50px;
}

.auth-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.logo i {
    font-size: 40px;
    color: var(--primary);
}

.logo h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
}

.auth-header h2 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--dark);
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
    font-size: 14px;
}

.form-group label i {
    margin-right: 5px;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.password-input {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.toggle-password:hover {
    color: var(--primary);
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.link {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.link:hover {
    color: var(--primary-dark);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.auth-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
}

.auth-info {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 60px 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-content h3 {
    font-size: 28px;
    margin-bottom: 20px;
}

.info-content h3 i {
    margin-right: 10px;
}

.info-content p {
    font-size: 16px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.features-list {
    list-style: none;
}

.features-list li {
    padding: 12px 0;
    font-size: 15px;
}

.features-list li i {
    margin-right: 10px;
    color: var(--secondary);
}

/* ===== Alert Messages ===== */
.alert {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.alert i {
    font-size: 18px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--secondary);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--primary);
}

/* ===== Dashboard Layout ===== */
.dashboard {
    background: var(--light);
    min-height: 100vh;
}

.dashboard-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
}

.header-logo i {
    color: var(--primary);
}

.header-nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    color: var(--primary);
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    cursor: pointer;
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 30px;
}

.page-header {
    margin-bottom: 40px;
}

.page-header h1 {
    font-size: 32px;
    margin-bottom: 10px;
    color: var(--dark);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* ===== Stats Cards ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--white);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.stat-card-title {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-card-icon {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.stat-card-icon.blue {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
}

.stat-card-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary);
}

.stat-card-icon.orange {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-card-icon.purple {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.stat-card-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 5px;
}

.stat-card-change {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ===== Cards ===== */
.card {
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
}

.card-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 20px;
    color: var(--dark);
}

.card-body {
    padding: 30px;
}

/* ===== Tables ===== */
.table-responsive {
    overflow-x: auto;
}

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

.table thead {
    background: var(--light);
}

.table th,
.table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    font-size: 14px;
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background: var(--light);
}

/* ===== Badges ===== */
.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .auth-container {
        grid-template-columns: 1fr;
    }

    .auth-info {
        display: none;
    }

    .auth-box {
        padding: 40px 30px;
    }

    .header-content {
        flex-direction: column;
        gap: 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Loading Spinner ===== */
.spinner {
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}