/* ============================================================
   UzerLike Design System
   Complete CSS design system for the UzerLike application.
   ============================================================ */

/* ------------------------------------------------------------
   Section 1: CSS Custom Properties (Design Tokens)
   ------------------------------------------------------------ */

:root {
    --color-primary: #1976D2;
    --color-primary-dark: #1565C0;
    --color-primary-light: #64B5F6;
    --color-secondary: #FF9800;
    --color-success: #4CAF50;
    --color-error: #F44336;
    --color-warning: #FF9800;
    --color-info: #2196F3;
    --color-text: #212121;
    --color-text-secondary: #757575;
    --color-surface: #FFFFFF;
    --color-background: #F5F5F5;
    --color-border: #E0E0E0;
    --color-drawer-bg: #FFFFFF;
    --color-appbar-bg: #1976D2;
    --color-appbar-text: #FFFFFF;
    --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-2: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --shadow-3: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --font-family: 'Roboto', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --transition-fast: 0.2s ease;
}

[data-theme="dark"] {
    --color-primary: #90CAF9;
    --color-primary-dark: #64B5F6;
    --color-secondary: #FFB74D;
    --color-success: #81C784;
    --color-text: #FFFFFF;
    --color-text-secondary: #B0B0B0;
    --color-surface: #1E1E1E;
    --color-background: #121212;
    --color-border: #424242;
    --color-drawer-bg: #1E1E1E;
    --color-appbar-bg: #1E1E1E;
}

/* ------------------------------------------------------------
   Section 2: Base Reset and Layout
   ------------------------------------------------------------ */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

/* App Shell */
.app-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* App Bar */
.app-appbar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    height: 64px;
    padding: 0 16px;
    background-color: var(--color-appbar-bg);
    color: var(--color-appbar-text);
    box-shadow: var(--shadow-1);
    z-index: 100;
}

/* App Body */
.app-body {
    display: flex;
    flex: 1;
}

/* App Drawer */
.app-drawer {
    width: 260px;
    background-color: var(--color-drawer-bg);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    padding: 8px 0;
    position: fixed;
    top: 64px;
    left: 0;
    bottom: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-fast);
    z-index: 200;
}

.app-drawer.open {
    transform: translateX(0);
}

/* Drawer Overlay */
.app-drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 199;
}

.app-drawer-overlay.visible {
    display: block;
}

/* App Main */
.app-main {
    flex: 1;
    padding: 24px;
    max-width: 1280px;
    margin: 0 auto;
    box-sizing: border-box;
    width: 100%;
}

/* Desktop Breakpoint */
@media (min-width: 960px) {
    .app-drawer {
        position: sticky;
        top: 64px;
        transform: translateX(0);
        height: calc(100vh - 64px);
        flex-shrink: 0;
    }

    .app-drawer-overlay {
        display: none !important;
    }

    .app-body {
        flex-direction: row;
    }
}

/* ------------------------------------------------------------
   Section 3: Utility Classes
   ------------------------------------------------------------ */

/* Flexbox */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-none { display: none; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-space-between { justify-content: space-between; }
.flex-1 { flex: 1; }

/* Gaps */
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

/* Spacing: Padding */
.pa-1 { padding: 4px; }
.pa-2 { padding: 8px; }
.pa-3 { padding: 12px; }
.pa-4 { padding: 16px; }
.pa-5 { padding: 20px; }
.pa-6 { padding: 24px; }
.pa-7 { padding: 28px; }
.pa-8 { padding: 32px; }

/* Spacing: Margin Top */
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-5 { margin-top: 20px; }
.mt-6 { margin-top: 24px; }

/* Spacing: Margin Bottom */
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-5 { margin-bottom: 20px; }
.mb-6 { margin-bottom: 24px; }

/* Spacing: Margin Left */
.ml-1 { margin-left: 4px; }
.ml-2 { margin-left: 8px; }
.ml-3 { margin-left: 12px; }

/* Spacing: Margin Right */
.mr-1 { margin-right: 4px; }
.mr-2 { margin-right: 8px; }
.mr-3 { margin-right: 12px; }

/* Spacing: Margin Y-axis */
.my-2 { margin-top: 8px; margin-bottom: 8px; }
.my-4 { margin-top: 16px; margin-bottom: 16px; }

/* Spacing: Margin X-axis Auto */
.mx-auto { margin-left: auto; margin-right: auto; }

/* Text Alignment */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }
.text-white { color: #FFFFFF; }
.font-weight-bold { font-weight: 700; }

/* Typography Scale */
.text-h3 { font-size: 3rem; font-weight: 400; line-height: 1.2; }
.text-h4 { font-size: 2.125rem; font-weight: 400; line-height: 1.235; }
.text-h5 { font-size: 1.5rem; font-weight: 400; line-height: 1.334; }
.text-h6 { font-size: 1.25rem; font-weight: 500; line-height: 1.6; }
.text-body1 { font-size: 1rem; line-height: 1.5; }
.text-body2 { font-size: 0.875rem; line-height: 1.43; }
.text-caption { font-size: 0.75rem; line-height: 1.66; }

/* Grid */
.grid {
    display: grid;
    gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 599px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 600px) and (max-width: 959px) {
    .grid-md-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
    .grid-lg-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-lg-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Misc Utilities */
.cursor-pointer { cursor: pointer; }
.w-full { width: 100%; }
.pre-line { white-space: pre-line; }
.spacer { flex: 1; }
.rounded-lg { border-radius: var(--radius-lg); }
.overflow-hidden { overflow: hidden; }

/* ------------------------------------------------------------
   Section 4: Component Styles
   ------------------------------------------------------------ */

/* --- Cards --- */

.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-1);
    overflow: hidden;
}

.card-media {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    background-color: #E0E0E0;
}

.card-content {
    padding: 16px;
}

.card-actions {
    padding: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
    border-top: 1px solid var(--color-border);
}

.card-hover {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-3);
}

/* --- Paper --- */

.paper {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-1);
}

.paper-0 {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: none;
    border: 1px solid var(--color-border);
}

.paper-2 {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-2);
}

/* --- Buttons --- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: none;
    border-radius: var(--radius-sm);
    padding: 6px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    min-height: 36px;
    text-decoration: none;
    line-height: 1.75;
    letter-spacing: 0.02857em;
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-1);
}

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

.btn-secondary:hover {
    filter: brightness(0.9);
    box-shadow: var(--shadow-1);
}

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

.btn-outlined:hover {
    background-color: rgba(25, 118, 210, 0.08);
}

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

.btn-text:hover {
    background-color: rgba(25, 118, 210, 0.08);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
}

.btn-ghost:hover {
    background-color: rgba(0, 0, 0, 0.08);
}

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

.btn-error:hover {
    background-color: rgba(244, 67, 54, 0.08);
}

.btn-icon {
    padding: 8px;
    border-radius: 50%;
    min-height: auto;
    min-width: auto;
}

.btn-lg {
    padding: 8px 22px;
    font-size: 0.9375rem;
    min-height: 42px;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.8125rem;
    min-height: 30px;
}

.btn-full {
    width: 100%;
}

.btn-white-outlined {
    background-color: transparent;
    border: 1px solid #FFFFFF;
    color: #FFFFFF;
}

.btn-white-outlined:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

/* --- Form Controls --- */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

.form-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-control {
    width: 100%;
    padding: 14px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-family);
    background-color: var(--color-surface);
    color: var(--color-text);
    box-sizing: border-box;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.15);
}

.form-control::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.7;
}

.form-control-with-icon {
    position: relative;
}

.form-control-with-icon .form-control {
    padding-left: 40px;
}

.form-control-with-icon .input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    pointer-events: none;
    display: flex;
    align-items: center;
}

.form-control-with-end-icon {
    position: relative;
}

.form-control-with-end-icon .form-control {
    padding-right: 40px;
}

.form-control-with-end-icon .end-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    background: none;
    border: none;
    padding: 0;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.form-error {
    font-size: 0.75rem;
    color: var(--color-error);
}

select.form-control {
    cursor: pointer;
    appearance: auto;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* --- Chips --- */

.chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.5;
    white-space: nowrap;
}

.chip-primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.chip-success {
    background-color: var(--color-success);
    color: #FFFFFF;
}

.chip-error {
    background-color: var(--color-error);
    color: #FFFFFF;
}

.chip-warning {
    background-color: var(--color-warning);
    color: #FFFFFF;
}

.chip-info {
    background-color: var(--color-info);
    color: #FFFFFF;
}

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

.chip-secondary-outlined {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.chip-sm {
    padding: 2px 8px;
    font-size: 0.75rem;
}

/* --- Avatar --- */

.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #FFFFFF;
    overflow: hidden;
    font-weight: 500;
    flex-shrink: 0;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 0.875rem;
}

.avatar-md {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
}

.avatar-lg {
    width: 120px;
    height: 120px;
    font-size: 3rem;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- Alerts --- */

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 0.875rem;
    line-height: 1.5;
}

.alert-error {
    background-color: #FFEBEE;
    color: #C62828;
    border-left: 4px solid var(--color-error);
}

.alert-success {
    background-color: #E8F5E9;
    color: #1B5E20;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background-color: #FFF8E1;
    color: #E65100;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background-color: #E3F2FD;
    color: #0D47A1;
    border-left: 4px solid var(--color-info);
}

/* --- Skeleton Loading --- */

@keyframes skeleton-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.skeleton {
    background-color: var(--color-border);
    border-radius: var(--radius-sm);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-text {
    height: 14px;
}

.skeleton-rect {
    border-radius: var(--radius-sm);
}

.skeleton-circle {
    border-radius: 50%;
}

/* --- Pagination --- */

.pagination {
    display: flex;
    gap: 4px;
    align-items: center;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.875rem;
    font-family: var(--font-family);
    transition: background-color var(--transition-fast);
}

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

.pagination-btn.active {
    background-color: var(--color-primary);
    color: #FFFFFF;
    border-color: var(--color-primary);
}

/* --- Progress --- */

.progress-linear {
    height: 4px;
    background-color: var(--color-border);
    border-radius: 2px;
    overflow: hidden;
    width: 100%;
}

@keyframes progress-indeterminate {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(400%); }
}

.progress-linear-bar {
    height: 100%;
    width: 25%;
    background-color: var(--color-primary);
    animation: progress-indeterminate 1.5s linear infinite;
    border-radius: 2px;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

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

/* --- Navigation --- */

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: background-color var(--transition-fast);
}

.nav-link:hover {
    background-color: rgba(0, 0, 0, 0.04);
    text-decoration: none;
}

.nav-link.active {
    background-color: rgba(25, 118, 210, 0.08);
    color: var(--color-primary);
    font-weight: 500;
}

.nav-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

.nav-group-content {
    padding-left: 16px;
}

/* --- Dropdown (User Menu) --- */

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-3);
    min-width: 180px;
    z-index: 300;
    overflow: hidden;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    font-family: var(--font-family);
}

.dropdown-item:hover {
    background-color: var(--color-background);
    text-decoration: none;
}

/* --- Tabs --- */

.tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
}

.tab-btn {
    padding: 12px 16px;
    border: none;
    background: none;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    padding: 16px 0;
}

/* --- Breadcrumbs --- */

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.breadcrumb-link {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb-link:hover {
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--color-text-secondary);
}

.breadcrumb-current {
    color: var(--color-text-secondary);
}

/* --- Divider --- */

.divider {
    height: 1px;
    background-color: var(--color-border);
    border: none;
    margin: 8px 0;
}

/* --- Toast Notifications --- */

.toast-container {
    position: fixed;
    bottom: 16px;
    right: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 380px;
}

@keyframes toast-slide-up {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.toast {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-2);
    animation: toast-slide-up 0.3s ease forwards;
    font-size: 0.875rem;
}

.toast-success {
    background-color: #E8F5E9;
    color: #1B5E20;
    border-left: 4px solid var(--color-success);
}

.toast-error {
    background-color: #FFEBEE;
    color: #C62828;
    border-left: 4px solid var(--color-error);
}

.toast-warning {
    background-color: #FFF8E1;
    color: #E65100;
    border-left: 4px solid var(--color-warning);
}

.toast-info {
    background-color: #E3F2FD;
    color: #0D47A1;
    border-left: 4px solid var(--color-info);
}

.toast-msg {
    flex: 1;
}

/* --- Dialog / Modal --- */

.dialog-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dialog-box {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-3);
    min-width: 320px;
    max-width: 480px;
    padding: 24px;
    width: 90%;
}

.dialog-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.dialog-message {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* --- Stepper --- */

.stepper-header {
    display: flex;
    overflow-x: auto;
    margin-bottom: 24px;
    align-items: center;
}

.stepper-step {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.step-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.step-circle.done {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.step-circle.active {
    background-color: var(--color-primary);
    color: #FFFFFF;
    box-shadow: 0 0 0 4px rgba(25, 118, 210, 0.2);
}

.step-circle.pending {
    background-color: var(--color-border);
    color: var(--color-text-secondary);
}

.step-line {
    flex: 1;
    height: 2px;
    background-color: var(--color-border);
    margin: 0 8px;
    min-width: 24px;
}

.step-line.done {
    background-color: var(--color-primary);
}

.step-label {
    font-size: 0.75rem;
    text-align: center;
    margin-top: 4px;
    white-space: nowrap;
    color: var(--color-text-secondary);
}

/* --- Carousel --- */

.carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    background-color: #000000;
}

.carousel-track {
    display: flex;
    transition: transform 0.35s ease;
}

.carousel-slide {
    min-width: 100%;
    flex-shrink: 0;
}

.carousel-img {
    width: 100%;
    height: 400px;
    object-fit: contain;
    display: block;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.4);
    color: #FFFFFF;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: background-color var(--transition-fast);
}

.carousel-btn:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

.carousel-prev {
    left: 8px;
}

.carousel-next {
    right: 8px;
}

.carousel-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 0;
    transition: background-color var(--transition-fast);
}

.carousel-dot.active {
    background-color: #FFFFFF;
}

/* --- Responsive Grid System --- */

.grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.grid-item {
    box-sizing: border-box;
    min-width: 0;
}

/* xs breakpoint (always) */
.grid-xs-1 { width: calc(8.333% - 14px); }
.grid-xs-2 { width: calc(16.666% - 13px); }
.grid-xs-3 { width: calc(25% - 12px); }
.grid-xs-4 { width: calc(33.333% - 11px); }
.grid-xs-6 { width: calc(50% - 8px); }
.grid-xs-12 { width: 100%; }

/* sm breakpoint (600px+) */
@media (min-width: 600px) {
    .grid-sm-3 { width: calc(25% - 12px); }
    .grid-sm-4 { width: calc(33.333% - 11px); }
    .grid-sm-6 { width: calc(50% - 8px); }
}

/* md breakpoint (960px+) */
@media (min-width: 960px) {
    .grid-md-2 { width: calc(16.666% - 13px); }
    .grid-md-3 { width: calc(25% - 12px); }
    .grid-md-4 { width: calc(33.333% - 11px); }
    .grid-md-6 { width: calc(50% - 8px); }
    .grid-md-8 { width: calc(66.666% - 5px); }
    .grid-md-9 { width: calc(75% - 4px); }
}

/* --- Containers --- */

.container-sm { max-width: 480px; margin-left: auto; margin-right: auto; }
.container-md { max-width: 720px; margin-left: auto; margin-right: auto; }
.container-lg { max-width: 1200px; margin-left: auto; margin-right: auto; }

/* --- Input Group (icon adornments) --- */

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group .input-icon {
    position: absolute;
    left: 12px;
    color: var(--color-text-secondary);
    pointer-events: none;
    display: flex;
    align-items: center;
    z-index: 1;
}

.input-group .input-icon ~ .form-control {
    padding-left: 40px;
}

.input-group .input-icon-end {
    position: absolute;
    right: 8px;
    z-index: 1;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 4px;
}

.input-group .form-control {
    flex: 1;
}

/* --- Icon Sizing --- */

.icon-sm { display: inline-flex; align-items: center; }
.icon-sm svg { width: 18px; height: 18px; }

.icon-lg { display: inline-flex; align-items: center; }
.icon-lg svg { width: 48px; height: 48px; }

/* --- Hero Section (Home) --- */

.hero-section {
    background: linear-gradient(135deg, #1976D2 0%, #64B5F6 100%);
    border-radius: var(--radius-lg);
}

/* --- Upload Zone (ImageUpload) --- */

.upload-zone {
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: background-color var(--transition-fast);
}

.upload-zone:hover {
    background-color: rgba(25, 118, 210, 0.04);
}

/* --- Progress Bar --- */

.progress-bar {
    height: 4px;
    background-color: var(--color-border);
    border-radius: 2px;
    overflow: hidden;
    width: 100%;
}

.progress-bar-indeterminate {
    height: 100%;
    width: 25%;
    background-color: var(--color-primary);
    animation: progress-indeterminate 1.5s linear infinite;
    border-radius: 2px;
}

/* --- Tabs Header --- */

.tabs-header {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
}

/* --- Chip Default/Secondary --- */

.chip-default {
    background-color: var(--color-border);
    color: var(--color-text);
}

.chip-secondary {
    background-color: #9E9E9E;
    color: #FFFFFF;
}

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

/* --- Card Media (background-image) --- */

.card-media {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* --- Property/Category Cards --- */

.property-card,
.category-card,
.transaction-card,
.image-preview-card {
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
}

.property-card:hover,
.category-card:hover,
.transaction-card:hover,
.image-preview-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-3);
}

/* --- Blazor Defaults --- */

.valid.modified input,
.valid.modified select,
.valid.modified textarea {
    border-color: var(--color-success);
}

.invalid {
    border-color: var(--color-error);
}

.validation-message {
    color: var(--color-error);
    font-size: 0.75rem;
}

#blazor-error-ui {
    background-color: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}