/* =============================================================================
   Notifications HumidScan - Minimal Brutalist Design
   Theme: Black & White, Sharp Edges, Functional Colors Only
   ============================================================================= */

/* CSS Custom Properties */
:root {
    /* Monochrome Palette */
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    --black: #000000;

    /* Status Colors - ONLY for indicators */
    --color-success: #22c55e;
    --color-warning: #eab308;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Consolas', 'Liberation Mono', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;

    /* Border */
    --border: 1px solid var(--gray-200);
    --border-strong: 1px solid var(--black);

    /* Transitions - consistent timing for smooth animations */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--black);
    background: var(--white);
    min-height: 100vh;
}

a {
    color: var(--black);
    text-decoration: underline;
}

a:hover {
    text-decoration: none;
}

/* =============================================================================
   Layout
   ============================================================================= */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--gray-50);
    padding: var(--space-6);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--white);
    border: var(--border-strong);
    padding: var(--space-8);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-header h1 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--black);
    margin-bottom: var(--space-2);
    letter-spacing: -0.025em;
}

.login-header p {
    color: var(--gray-500);
    font-size: var(--text-sm);
}

/* Dashboard Layout */
.dashboard-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--white);
    border-bottom: var(--border-strong);
    padding: var(--space-4) var(--space-6);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--black);
    letter-spacing: -0.025em;
}

.header-logo svg {
    width: 24px;
    height: 24px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--gray-600);
    font-size: var(--text-sm);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--space-8) var(--space-6);
    background: var(--gray-50);
}

/* =============================================================================
   Form Components
   ============================================================================= */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--black);
    margin-bottom: var(--space-2);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    font-family: inherit;
    color: var(--black);
    background: var(--white);
    border: var(--border-strong);
    transition: box-shadow var(--transition-fast);
}

.form-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--black);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    color: var(--color-error);
    font-size: var(--text-sm);
    margin-top: var(--space-1);
}

.form-help {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-4);
}

.form-section {
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: var(--border);
}

.form-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.form-section h4 {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--black);
}

/* Select styling */
select.form-input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-10);
}

/* =============================================================================
   Buttons
   ============================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 500;
    font-family: inherit;
    line-height: 1.5;
    border: var(--border-strong);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--gray-800);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-100);
}

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

.btn-danger:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    color: var(--black);
}

.btn-outline:hover:not(:disabled) {
    background: var(--gray-100);
}

.btn-full {
    width: 100%;
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
}

/* =============================================================================
   Cards
   ============================================================================= */

.card {
    background: var(--white);
    border: var(--border-strong);
    overflow: hidden;
}

.card-header {
    padding: var(--space-5);
    border-bottom: var(--border);
}

.card-header h2 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--black);
}

.card-body {
    padding: var(--space-5);
}

.card-footer {
    padding: var(--space-5);
    border-top: var(--border);
    background: var(--gray-50);
}

/* =============================================================================
   Stats Grid
   ============================================================================= */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--white);
    border: var(--border-strong);
    padding: var(--space-5);
}

.stat-card.pending .stat-value {
    color: var(--color-warning);
}

.stat-card.sent .stat-value {
    color: var(--color-success);
}

.stat-card.failed .stat-value {
    color: var(--color-error);
}

.stat-card.campaigns .stat-value {
    color: var(--color-info);
}

.stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--black);
    line-height: 1;
    font-family: var(--font-mono);
    transition: opacity var(--transition-fast);
}

.stat-value.stat-updating {
    opacity: 0.5;
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--gray-500);
    margin-top: var(--space-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* =============================================================================
   Table
   ============================================================================= */

.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: var(--border);
}

.table th {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--gray-600);
    background: var(--gray-50);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table td {
    font-size: var(--text-sm);
    color: var(--gray-700);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid;
}

.badge-pending {
    background: transparent;
    color: var(--color-warning);
    border-color: var(--color-warning);
}

.badge-sent {
    background: transparent;
    color: var(--color-success);
    border-color: var(--color-success);
}

.badge-failed {
    background: transparent;
    color: var(--color-error);
    border-color: var(--color-error);
}

.badge-schedule {
    background: var(--gray-100);
    color: var(--gray-600);
    border-color: var(--gray-300);
}

/* =============================================================================
   Tabs - Smooth transitions without flickering
   ============================================================================= */

.tabs {
    display: flex;
    gap: 0;
    border-bottom: var(--border-strong);
}

.tab {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--gray-500);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast), background-color var(--transition-fast);
    position: relative;
}

.tab:hover {
    color: var(--black);
}

.tab.active {
    color: var(--black);
    background: var(--white);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--black);
}

/* Tab Panels - No flickering animations */
.tab-panels {
    position: relative;
}

.tab-panel {
    display: none;
    opacity: 0;
}

.tab-panel.active {
    display: block;
    opacity: 1;
    animation: fadeIn var(--transition-normal) ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(4px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =============================================================================
   Alerts - Smooth animations
   ============================================================================= */

.alert {
    padding: var(--space-4);
    font-size: var(--text-sm);
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border: 1px solid;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.alert-animate {
    animation: slideIn var(--transition-normal) ease;
}

.alert-fade-out {
    opacity: 0;
    transform: translateY(-8px);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: var(--white);
    color: var(--color-error);
    border-color: var(--color-error);
}

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

.alert-warning {
    background: var(--white);
    color: var(--color-warning);
    border-color: var(--color-warning);
}

/* =============================================================================
   Grid Layout
   ============================================================================= */

.grid {
    display: grid;
    gap: var(--space-5);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 768px) {
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

/* =============================================================================
   Section Header
   ============================================================================= */

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.section-header h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--black);
}

/* =============================================================================
   Campaign Cards
   ============================================================================= */

.campaigns-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.campaign-card {
    background: var(--white);
    border: var(--border-strong);
    padding: var(--space-5);
    transition: box-shadow var(--transition-fast);
}

.campaign-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.campaign-card.inactive {
    opacity: 0.7;
    background: var(--gray-50);
}

.campaign-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    gap: var(--space-4);
}

.campaign-info {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.campaign-info h4 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--black);
    margin-right: var(--space-2);
}

.campaign-actions {
    display: flex;
    gap: var(--space-2);
    flex-shrink: 0;
}

.campaign-content {
    margin-bottom: var(--space-3);
}

.campaign-preview {
    font-size: var(--text-sm);
    color: var(--gray-600);
    line-height: 1.5;
}

.campaign-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-3);
    border-top: var(--border);
    font-size: var(--text-xs);
    color: var(--gray-500);
}

.campaign-stats {
    display: flex;
    gap: var(--space-4);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

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

.stat-item.error {
    color: var(--color-error);
}

.campaign-schedule {
    font-family: var(--font-mono);
}

/* =============================================================================
   Empty State
   ============================================================================= */

.empty-state {
    text-align: center;
    padding: var(--space-12);
    color: var(--gray-500);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
    opacity: 0.3;
}

.empty-state h3 {
    font-size: var(--text-base);
    color: var(--black);
    margin-bottom: var(--space-2);
    font-weight: 500;
}

.empty-state p {
    font-size: var(--text-sm);
}

/* =============================================================================
   Loading Placeholder
   ============================================================================= */

.loading-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    gap: var(--space-4);
    color: var(--gray-500);
}

.loading-placeholder p {
    font-size: var(--text-sm);
}

/* =============================================================================
   Loading Spinner - Smooth rotation
   ============================================================================= */

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-top-color: var(--black);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn .spinner {
    width: 16px;
    height: 16px;
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
}

/* =============================================================================
   Utilities
   ============================================================================= */

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

/* =============================================================================
   Modal - Smooth open/close
   ============================================================================= */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    padding: var(--space-6);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--white);
    border: var(--border-strong);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-lg {
    max-width: 640px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    border-bottom: var(--border);
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 1;
}

.modal-header h3 {
    font-size: var(--text-lg);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    padding: var(--space-1);
    cursor: pointer;
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--black);
}

.modal-body {
    padding: var(--space-5);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-5);
    border-top: var(--border);
    position: sticky;
    bottom: 0;
    background: var(--white);
}

/* =============================================================================
   Responsive
   ============================================================================= */

@media (max-width: 640px) {
    .login-card {
        padding: var(--space-6);
    }

    .header-content {
        flex-direction: column;
        gap: var(--space-4);
    }

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

    .table th,
    .table td {
        padding: var(--space-3);
    }

    .tabs {
        overflow-x: auto;
    }

    .tab {
        padding: var(--space-3) var(--space-4);
        white-space: nowrap;
    }

    .campaign-header {
        flex-direction: column;
    }

    .campaign-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .campaign-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .section-header .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .modal {
        max-height: 100vh;
        border: none;
    }

    .modal-overlay {
        padding: 0;
    }
}

/* =============================================================================
   Form Enhancements & Utilities
   ============================================================================= */

.input-group {
    display: flex;
    gap: 0;
    /* Removing gap to merge borders */
}

.input-group .form-input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    flex: 1;
    z-index: 1;
}

.input-group .form-input:focus {
    z-index: 2;
}

.input-group .btn {
    flex-shrink: 0;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin-left: -1px;
    /* Merge borders */
}

.flex-row {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.items-center {
    align-items: center;
}

.mb-1 {
    margin-bottom: var(--space-1);
}

.mb-0 {
    margin-bottom: 0;
}