/* ===================================
   CSS Variables
   =================================== */

:root {
    --color-primary: #007bff;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-text: #333;
    --color-text-muted: #666;
    --color-border: #ddd;
    --color-bg-secondary: #f5f5f5;

    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    --font-sm: 12px;
    --font-base: 14px;
    --font-lg: 16px;
    --font-xl: 20px;
    --font-2xl: 24px;
}

/* ===================================
   Base & Reset
   =================================== */

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    font-size: var(--font-base);
    line-height: 1.5;
    color: var(--color-text);
    margin: 0;
    padding: var(--spacing-lg);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md) 0;
    font-weight: 600;
}

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

a:hover {
    text-decoration: underline;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.dashboard-container {
    padding: var(--spacing-lg);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-md);
}

/* ===================================
   Utility Classes
   =================================== */

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.flex-center {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.flex-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.flex-gap {
    display: flex;
    gap: var(--spacing-md);
}

/* Spacing */
.mb-20 { margin-bottom: var(--spacing-lg); }
.mb-24 { margin-bottom: var(--spacing-xl); }
.mt-20 { margin-top: var(--spacing-lg); }
.m-0   { margin: 0; }

/* Text */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--color-text-muted); }
.text-small  { font-size: var(--font-sm); }
.text-medium { font-size: var(--font-lg); }
.text-large  { font-size: var(--font-xl); }
.text-nowrap { white-space: nowrap; }

/* Width */
.w-100 { width: 100px; }

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

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.grid-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

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

.card {
    background: white;
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card h2,
.card h3 {
    margin-top: 0;
}

.card-interactive {
    cursor: pointer;
}

.card-hero {
    background: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

/* ===================================
   Titles
   =================================== */

.page-title,
.dashboard-title {
    font-size: var(--font-2xl);
    font-weight: 600;
    margin: 0;
}

.page-subtitle,
.dashboard-subtitle {
    font-size: var(--font-lg);
    color: var(--color-text-muted);
    margin: var(--spacing-sm) 0 0 0;
}

/* ===================================
   Info Display
   =================================== */

.info-box {
    background: var(--color-bg-secondary);
    padding: var(--spacing-md);
}

.info-box-label {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.info-box-value {
    font-size: var(--font-lg);
    font-weight: 600;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
}

.info-row-label {
    color: var(--color-text-muted);
}

.info-row-value {
    font-weight: 600;
}

.info-row-primary {
    background: #e3f2fd;
}

.info-row-primary .info-row-label,
.info-row-primary .info-row-value {
    color: var(--color-primary);
}

/* ===================================
   Items (Tenants, Flats, etc.)
   =================================== */

.item-number {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.item-subtitle {
    font-size: var(--font-base);
    color: var(--color-text-muted);
}

.item-value {
    font-size: var(--font-base);
    color: var(--color-text);
}

/* ===================================
   Contact Info
   =================================== */

.contact-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
}

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

.contact-empty {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ===================================
   Icons
   =================================== */

.icon-large   { font-size: var(--font-2xl); }
.icon-xlarge  { font-size: 2.5rem; }
.icon-xxlarge { font-size: 3rem; }

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

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
}

.empty-state-large {
    padding: var(--spacing-xl);
}

.empty-state-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

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

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

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--color-border);
    background: white;
    color: var(--color-text);
    cursor: pointer;
    font-size: var(--font-base);
    text-align: center;
}

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

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

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

.btn-back {
    background: black;
    color: white;
    border: 1px solid var(--color-border);
}

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

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-sm);
}

/* ===================================
   Alerts
   =================================== */

.alert-success,
.alert-danger {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    border-color: var(--color-success);
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    border-color: var(--color-danger);
    color: #721c24;
}

/* ===================================
   Forms
   =================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-muted);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="datetime-local"],
input[type="number"],
textarea,
select,
.search-input,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    font-size: var(--font-base);
    font-family: inherit;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
}

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

.search-input {
    margin-bottom: var(--spacing-md);
}

.search-results-text {
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

/* ===================================
   Login
   =================================== */

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    background: white;
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 100%;
}

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

.login-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.login-title {
    font-size: var(--font-2xl);
    margin-bottom: var(--spacing-sm);
}

.login-subtitle {
    color: var(--color-text-muted);
}

.login-form .form-group {
    margin-bottom: var(--spacing-lg);
}

/* ===================================
   Error UI (Blazor)
   =================================== */

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 5px rgba(0,0,0,0.3);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

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

.blazor-error-boundary {
    background: #b32121;
    padding: 1rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

/* ===================================
   ReflectionEdit - Nested / Recursive
   =================================== */

.nested-item {
    margin-left: 1rem;
    padding: 0.75rem;
    border-left: 3px solid var(--color-primary);
    margin-bottom: 0.5rem;
    background: rgba(0,0,0,0.02);
}

.nested-item p {
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.nested-edit-fields {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.nested-edit-fields .form-label {
    font-size: 0.85rem;
    margin-bottom: 0.1rem;
    font-weight: 600;
}

.nested-edit-fields .form-select {
    font-size: 0.9rem;
    padding: 0.3rem 0.5rem;
}

.complex-list-editor {
    margin-left: 0.5rem;
    margin-bottom: 1rem;
}

.complex-list-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border: 1px solid var(--color-border);
    background: rgba(0,0,0,0.015);
}

.complex-list-item-content {
    flex: 1;
}

.complex-list-item-actions {
    padding-top: 0.25rem;
    flex-shrink: 0;
}

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

@media (max-width: 768px) {
    body {
        padding: var(--spacing-md);
    }

    .container,
    .dashboard-container {
        padding: var(--spacing-md);
    }

    .dashboard-grid,
    .grid-cards {
        grid-template-columns: 1fr;
    }

    .grid-2col,
    .grid-details {
        grid-template-columns: 1fr;
    }

    .flex-between,
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
}