/* OTP Verification SaaS - Modern CSS Styles */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --border-color: #e2e8f0;
    --text-color: #334155;
    --text-muted: #64748b;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 0.5rem;
    --transition: all 0.2s ease-in-out;
}

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

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

/* Navigation */
.navbar {
    background: white;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 500;
}

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

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    text-align: right;
}

.user-info span {
    display: block;
    font-weight: 600;
}

.user-info small {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.page-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
}

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

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-color);
}

.card-content {
    padding: 1.5rem;
}

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background-color: var(--primary-color);
}

.stat-icon.success {
    background-color: var(--success-color);
}

.stat-icon.warning {
    background-color: var(--warning-color);
}

.stat-icon.info {
    background-color: var(--info-color);
}

.stat-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

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

.template-selector {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.template-selector .form-group {
    flex: 1;
    margin-bottom: 0;
}

.template-preview {
    background-color: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-top: 0.5rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    white-space: pre-line;
    min-height: 60px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

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

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

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

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

.btn-success:hover {
    background-color: #059669;
}

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

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

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

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

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Test Grid */
.test-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* QR Code */
.qr-container {
    text-align: center;
    padding: 2rem;
}

.qr-placeholder {
    padding: 3rem;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-muted);
}

.qr-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.qr-code {
    max-width: 300px;
    margin: 0 auto;
}

.qr-actions {
    text-align: center;
    margin-top: 1rem;
}

/* Status Card */
.status-card {
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.status-connected {
    background-color: #f0fdf4;
    border-color: var(--success-color);
    color: var(--success-color);
}

.status-disconnected {
    background-color: #fef2f2;
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.status-connecting {
    background-color: #fffbeb;
    border-color: var(--warning-color);
    color: var(--warning-color);
}

/* Activity List */
.activity-list {
    max-height: 400px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* API Keys List */
.api-keys-list {
    max-height: 400px;
    overflow-y: auto;
}

.api-key-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.api-key-info h4 {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.api-key-info p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.api-key-value {
    font-family: 'Courier New', monospace;
    background-color: var(--light-color);
    padding: 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    word-break: break-all;
}

/* Logs List */
.logs-list {
    max-height: 500px;
    overflow-y: auto;
}

.log-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.log-item:last-child {
    border-bottom: none;
}

.log-status {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.log-status.verified {
    background-color: #f0fdf4;
    color: var(--success-color);
}

.log-status.pending {
    background-color: #fffbeb;
    color: var(--warning-color);
}

.log-status.expired {
    background-color: #fef2f2;
    color: var(--danger-color);
}

.log-status.failed {
    background-color: #fef2f2;
    color: var(--danger-color);
}

.log-content {
    flex: 1;
}

.log-phone {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.log-time {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Test Results */
.test-results {
    min-height: 200px;
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.result-item {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.result-success {
    border-color: var(--success-color);
    background-color: #f0fdf4;
}

.result-error {
    border-color: var(--danger-color);
    background-color: #fef2f2;
}

/* Code Examples */
.code-examples {
    margin-top: 1rem;
}

.code-examples h4 {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.code-examples pre {
    background-color: var(--dark-color);
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.modal-body {
    padding: 1.5rem;
}

.auth-switch {
    text-align: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.auth-switch a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 3000;
}

.toast {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    margin-bottom: 0.5rem;
    min-width: 300px;
    border-left: 4px solid var(--primary-color);
    animation: slideIn 0.3s ease-out;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    z-index: 4000;
    align-items: center;
    justify-content: center;
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    text-align: center;
    color: var(--primary-color);
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-user {
        display: none;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .test-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .card-content {
        padding: 1rem;
    }
    
    .modal-content {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}