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

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Login Container */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8em;
    color: var(--text-primary);
}

.login-footer {
    margin-top: 20px;
    text-align: center;
}

.login-footer a {
    color: var(--info);
    text-decoration: none;
    font-size: 0.9em;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Admin Container */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 15px;
}

.admin-header h1 {
    font-size: 1.8em;
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

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

/* Card */
.card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.card h2 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: var(--text-primary);
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9em;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 1em;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--info);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding-top: 28px;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: #475569;
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85em;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

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

/* Announcements List */
.announcements-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.announcement-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    transition: all 0.2s;
}

.announcement-item:hover {
    border-color: var(--info);
    transform: translateX(5px);
}

.announcement-item.inactive {
    opacity: 0.6;
}

.announcement-content {
    flex: 1;
}

.announcement-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.announcement-header h3 {
    font-size: 1.2em;
    color: var(--text-primary);
}

.announcement-type {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.type-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.type-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.type-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.type-error {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.announcement-message {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}

.announcement-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    font-size: 0.85em;
    color: var(--text-muted);
}

.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 600;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-badge.inactive {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-muted);
}

.announcement-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

.empty-message {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-actions {
        width: 100%;
    }

    .header-actions .btn {
        flex: 1;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .announcement-item {
        flex-direction: column;
    }

    .announcement-actions {
        flex-direction: row;
        width: 100%;
    }

    .announcement-actions .btn {
        flex: 1;
    }

    .card {
        padding: 20px;
    }
}