/* =============================================================================
   Split Infinity — Application Styles
   Design system layer on top of MudBlazor + Bootstrap.
   tokens.css must be loaded before this file.
   ============================================================================= */

/* --- MudBlazor font override (replaces default Roboto) --- */
.mud-typography,
.mud-button-label,
.mud-nav-link,
.mud-nav-group-header-text,
.mud-input,
.mud-input-label,
.mud-chip-content,
.mud-table-cell,
.mud-menu-item,
.mud-alert-message,
.mud-text-field-helper-text {
    font-family: var(--si-font-sans) !important;
}

/* --- Base Typography --- */
html, body {
    font-family: var(--si-font-sans);
    background-color: var(--si-surface-bg);
    color: var(--si-text-primary);
}

/* --- Layout Structure --- */
.si-layout {
    min-height: 100vh;
}

/* AppBar */
.si-appbar.mud-appbar {
    border-bottom: 1px solid var(--si-border-subtle);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.si-user-btn {
    font-family: var(--si-font-sans) !important;
    font-weight: var(--si-font-weight-medium) !important;
    font-size: var(--si-text-sm) !important;
    max-width: 200px;
    overflow: hidden;
}

.si-user-btn .mud-button-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Drawer / Sidebar */
.si-drawer .mud-drawer-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.si-drawer-header {
    padding: var(--si-space-4) var(--si-space-6) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.si-logo {
    display: flex;
    align-items: center;
    gap: var(--si-space-2);
    text-decoration: none;
    color: inherit;
    user-select: none;
}

.si-logo:hover { color: inherit; text-decoration: none; }

.si-logo-icon {
    font-size: 1.5rem;
    color: #60A5FA;
}

.si-logo-text {
    font-family: var(--si-font-sans);
    font-size: var(--si-text-lg);
    font-weight: var(--si-font-weight-bold);
    letter-spacing: -0.025em;
    color: #F1F5F9;
}

.si-nav-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--si-space-3) 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.15) transparent;
}

.si-nav-menu {
    padding: 0 var(--si-space-3);
}

/* Nav section label */
.si-nav-section-label {
    font-size: 0.625rem;
    font-weight: var(--si-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--si-neutral-500);
    padding: var(--si-space-2) var(--si-space-4);
    margin-top: var(--si-space-2);
}

/* Nav link refinements */
.si-nav-menu .mud-nav-link {
    border-radius: var(--si-radius-md) !important;
    margin-bottom: 2px;
    font-weight: var(--si-font-weight-medium);
    font-size: var(--si-text-sm);
    transition: background-color var(--si-duration-fast) var(--si-ease-default),
                color var(--si-duration-fast) var(--si-ease-default);
}

.si-nav-menu .mud-nav-group-header {
    border-radius: var(--si-radius-md) !important;
    font-weight: var(--si-font-weight-medium);
    font-size: var(--si-text-sm);
}

.si-drawer-footer {
    flex-shrink: 0;
    padding: var(--si-space-3) var(--si-space-4) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.si-drawer-user {
    display: flex;
    align-items: center;
    gap: var(--si-space-2);
    padding: var(--si-space-2) var(--si-space-2);
    border-radius: var(--si-radius-md);
}

.si-drawer-user-icon {
    font-size: 1.25rem;
    color: var(--si-neutral-400);
    flex-shrink: 0;
}

.si-drawer-user-name {
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-medium);
    color: var(--si-neutral-400);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Main content area */
.si-main-content {
    background-color: var(--si-surface-bg);
}

.si-page-wrapper {
    padding: var(--si-space-8);
    max-width: var(--si-content-max);
}

@media (max-width: 960px) {
    .si-page-wrapper {
        padding: var(--si-space-4);
    }
}

/* --- Page Header Pattern --- */
.si-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--si-space-4);
    margin-bottom: var(--si-space-8);
    flex-wrap: wrap;
}

.si-page-title {
    font-size: var(--si-text-3xl);
    font-weight: var(--si-font-weight-bold);
    color: var(--si-text-primary);
    line-height: var(--si-line-height-tight);
    letter-spacing: -0.025em;
    margin: 0;
}

.si-page-subtitle {
    font-size: var(--si-text-base);
    color: var(--si-text-secondary);
    margin: var(--si-space-1) 0 0;
}

/* --- Stat Card --- */
.si-stat-card {
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-subtle);
    border-radius: var(--si-radius-lg);
    padding: var(--si-space-6);
    transition: box-shadow var(--si-duration-normal) var(--si-ease-default),
                transform var(--si-duration-normal) var(--si-ease-default);
}

.si-stat-card:hover {
    box-shadow: var(--si-shadow-md);
    transform: translateY(-1px);
}

.si-stat-label {
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--si-text-secondary);
    margin-bottom: var(--si-space-2);
}

.si-stat-value {
    font-size: var(--si-text-3xl);
    font-weight: var(--si-font-weight-bold);
    color: var(--si-text-primary);
    letter-spacing: -0.025em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.si-stat-icon {
    font-size: 1.5rem;
    padding: var(--si-space-3);
    border-radius: var(--si-radius-md);
    background: var(--si-primary-muted);
    color: var(--si-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--si-space-4);
}

/* --- Action Card (Quick action tiles) --- */
.si-action-card {
    display: block;
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-subtle);
    border-radius: var(--si-radius-lg);
    padding: var(--si-space-6);
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--si-duration-normal) var(--si-ease-default),
                border-color var(--si-duration-normal) var(--si-ease-default),
                transform var(--si-duration-normal) var(--si-ease-default);
}

.si-action-card:hover {
    box-shadow: var(--si-shadow-md);
    border-color: var(--si-primary);
    transform: translateY(-2px);
    text-decoration: none;
    color: inherit;
}

.si-action-card-icon {
    font-size: 2rem;
    color: var(--si-primary);
    margin-bottom: var(--si-space-4);
}

.si-action-card-title {
    font-size: var(--si-text-md);
    font-weight: var(--si-font-weight-semibold);
    color: var(--si-text-primary);
    margin: 0 0 var(--si-space-1);
}

.si-action-card-desc {
    font-size: var(--si-text-sm);
    color: var(--si-text-secondary);
    margin: 0;
}

/* --- Team Card --- */
.si-team-card {
    display: block;
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-subtle);
    border-radius: var(--si-radius-xl);
    padding: var(--si-space-6);
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--si-duration-normal) var(--si-ease-default),
                border-color var(--si-duration-normal) var(--si-ease-default),
                transform var(--si-duration-normal) var(--si-ease-default);
    height: 100%;
}

.si-team-card:hover {
    box-shadow: var(--si-shadow-lg);
    border-color: var(--si-brand-300);
    transform: translateY(-3px);
    text-decoration: none;
    color: inherit;
}

.si-team-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--si-radius-md);
    background: var(--si-primary-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--si-space-4);
}

.si-team-card-icon .material-symbols-outlined {
    font-size: 1.375rem;
    color: var(--si-primary);
}

.si-team-card-name {
    font-size: var(--si-text-lg);
    font-weight: var(--si-font-weight-semibold);
    color: var(--si-text-primary);
    margin: 0 0 var(--si-space-2);
}

.si-team-card-desc {
    font-size: var(--si-text-sm);
    color: var(--si-text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.si-team-card-footer {
    margin-top: auto;
    padding-top: var(--si-space-4);
    font-size: var(--si-text-xs);
    color: var(--si-text-muted);
    border-top: 1px solid var(--si-border-subtle);
    margin-top: var(--si-space-4);
}

/* --- Member Row --- */
.si-member-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--si-space-4) 0;
    border-bottom: 1px solid var(--si-border-subtle);
    gap: var(--si-space-4);
    flex-wrap: wrap;
}

.si-member-row:last-child {
    border-bottom: none;
}

.si-member-info {
    display: flex;
    align-items: center;
    gap: var(--si-space-3);
    min-width: 0;
}

.si-member-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--si-radius-full);
    background: var(--si-primary-muted);
    color: var(--si-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--si-text-sm);
    font-weight: var(--si-font-weight-semibold);
    flex-shrink: 0;
}

.si-member-name {
    font-weight: var(--si-font-weight-medium);
    color: var(--si-text-primary);
    font-size: var(--si-text-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.si-member-actions {
    display: flex;
    align-items: center;
    gap: var(--si-space-3);
    flex-shrink: 0;
}

/* --- Role badge --- */
.si-role-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--si-radius-full);
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.si-role-badge.owner {
    background: var(--si-primary-muted);
    color: var(--si-primary-text);
}

.si-role-badge.member {
    background: var(--si-surface-sunken);
    color: var(--si-text-secondary);
}

/* --- Money Display --- */
.money {
    font-variant-numeric: tabular-nums;
    font-weight: var(--si-font-weight-semibold);
}

.money.negative { color: var(--si-danger); }
.money.positive { color: var(--si-success); }

/* --- Percentage Input --- */
.percentage-input {
    display: flex;
    align-items: center;
    gap: 0;
}

.percentage-input .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    max-width: 100px;
    font-variant-numeric: tabular-nums;
}

.percentage-input .input-group-text {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* --- Amount Selector (PaymentPage) --- */
.amount-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--si-space-2);
}

.amount-btn {
    padding: var(--si-space-2) var(--si-space-5);
    border: 2px solid var(--si-border-default);
    border-radius: var(--si-radius-md);
    background: transparent;
    color: var(--si-text-secondary);
    font-family: var(--si-font-sans);
    font-weight: var(--si-font-weight-semibold);
    font-size: var(--si-text-sm);
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    transition: all var(--si-duration-fast) var(--si-ease-default);
}

.amount-btn:hover {
    border-color: var(--si-primary);
    color: var(--si-primary);
    background: var(--si-primary-muted);
}

.amount-btn.active {
    border-color: var(--si-primary);
    background: var(--si-primary);
    color: #fff;
}

/* --- Payment Success --- */
.payment-success {
    border-color: var(--si-success) !important;
}

/* --- Empty State --- */
.empty-state {
    padding: var(--si-space-12) var(--si-space-4);
    text-align: center;
}

.empty-state-icon .material-symbols-outlined {
    font-size: 4rem;
    color: var(--si-text-muted);
    margin-bottom: var(--si-space-4);
    display: block;
}

/* --- Sign In Page --- */
.si-signin-page {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--si-space-8) var(--si-space-4);
}

.si-signin-card {
    width: 100%;
    max-width: 400px;
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-subtle);
    border-radius: var(--si-radius-2xl);
    padding: var(--si-space-10) var(--si-space-8);
    box-shadow: var(--si-shadow-lg);
}

.si-signin-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--si-space-2);
    margin-bottom: var(--si-space-8);
}

.si-signin-logo-icon {
    font-size: 2rem;
    color: var(--si-primary);
}

.si-signin-logo-text {
    font-size: var(--si-text-2xl);
    font-weight: var(--si-font-weight-bold);
    color: var(--si-text-primary);
    letter-spacing: -0.025em;
}

.si-signin-heading {
    font-size: var(--si-text-2xl);
    font-weight: var(--si-font-weight-bold);
    color: var(--si-text-primary);
    text-align: center;
    margin: 0 0 var(--si-space-2);
    letter-spacing: -0.02em;
}

.si-signin-subheading {
    font-size: var(--si-text-sm);
    color: var(--si-text-secondary);
    text-align: center;
    margin: 0 0 var(--si-space-8);
}

.si-signin-providers {
    display: flex;
    flex-direction: column;
    gap: var(--si-space-3);
}

.si-provider-btn {
    display: flex;
    align-items: center;
    gap: var(--si-space-3);
    width: 100%;
    padding: var(--si-space-3) var(--si-space-4);
    background: var(--si-surface-card);
    border: 1.5px solid var(--si-border-default);
    border-radius: var(--si-radius-md);
    font-family: var(--si-font-sans);
    font-size: var(--si-text-sm);
    font-weight: var(--si-font-weight-semibold);
    color: var(--si-text-primary);
    text-decoration: none;
    cursor: pointer;
    transition: border-color var(--si-duration-fast) var(--si-ease-default),
                box-shadow var(--si-duration-fast) var(--si-ease-default),
                background-color var(--si-duration-fast) var(--si-ease-default);
}

.si-provider-btn:hover {
    border-color: var(--si-primary);
    background: var(--si-primary-muted);
    box-shadow: var(--si-shadow-brand);
    color: var(--si-text-primary);
    text-decoration: none;
}

.si-provider-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--si-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-bold);
    flex-shrink: 0;
    background: var(--si-surface-sunken);
    color: var(--si-text-primary);
}

/* --- Home / Hero --- */
.si-hero {
    padding: var(--si-space-20) var(--si-space-4);
    text-align: center;
    position: relative;
}

.si-hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--si-space-2);
    padding: var(--si-space-1) var(--si-space-4);
    background: var(--si-primary-muted);
    border-radius: var(--si-radius-full);
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--si-primary-text);
    margin-bottom: var(--si-space-6);
}

.si-hero-title {
    font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
    font-weight: 800;
    color: var(--si-text-primary);
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin: 0 0 var(--si-space-6);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.si-hero-title .si-gradient-text {
    background: linear-gradient(135deg, var(--si-primary) 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.si-hero-desc {
    font-size: var(--si-text-xl);
    color: var(--si-text-secondary);
    line-height: var(--si-line-height-relaxed);
    max-width: 560px;
    margin: 0 auto var(--si-space-10);
}

.si-hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--si-space-4);
    flex-wrap: wrap;
}

.si-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--si-space-6);
    margin: var(--si-space-16) 0;
}

.si-feature-card {
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-subtle);
    border-radius: var(--si-radius-xl);
    padding: var(--si-space-8) var(--si-space-6);
    transition: box-shadow var(--si-duration-normal) var(--si-ease-default),
                transform var(--si-duration-normal) var(--si-ease-default);
}

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

.si-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--si-radius-md);
    background: var(--si-primary-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--si-space-5);
}

.si-feature-icon .material-symbols-outlined {
    font-size: 1.5rem;
    color: var(--si-primary);
}

.si-feature-title {
    font-size: var(--si-text-lg);
    font-weight: var(--si-font-weight-semibold);
    color: var(--si-text-primary);
    margin: 0 0 var(--si-space-2);
}

.si-feature-desc {
    font-size: var(--si-text-sm);
    color: var(--si-text-secondary);
    line-height: var(--si-line-height-relaxed);
    margin: 0;
}

/* --- Admin dashboard --- */
.si-admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--si-space-5);
    margin-bottom: var(--si-space-8);
}

/* --- Blazor form validation (Bootstrap compat) --- */
.valid.modified:not([type=checkbox]) { outline: 1px solid var(--si-success); }
.invalid { outline: 1px solid var(--si-danger); }
.validation-message { color: var(--si-danger); font-size: var(--si-text-sm); }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

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

/* --- Accessibility: Font overrides --- */
[data-si-font="dyslexia"] { --si-font-sans: 'Atkinson Hyperlegible', sans-serif; }
[data-si-font="mono"]     { --si-font-sans: 'Courier New', Courier, monospace; }

/* --- Accessibility: Colorblind filters --- */
[data-si-colorblind="protanopia"]   body { filter: url(#si-protanopia); }
[data-si-colorblind="deuteranopia"] body { filter: url(#si-deuteranopia); }
[data-si-colorblind="tritanopia"]   body { filter: url(#si-tritanopia); }

/* --- Accessibility: Reduced motion --- */
[data-si-motion="reduced"] *,
[data-si-motion="reduced"] *::before,
[data-si-motion="reduced"] *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
}

/* --- Accessibility: Dark mode SI token overrides --- */
[data-bs-theme="dark"] {
    --si-surface-bg:       #0f172a;
    --si-surface-card:     #1e293b;
    --si-surface-elevated: #293548;
    --si-surface-sunken:   #0a1120;
    --si-surface-overlay:  rgba(255,255,255,0.05);
    --si-text-primary:     #f1f5f9;
    --si-text-secondary:   #94a3b8;
    --si-text-muted:       #64748b;
    --si-text-disabled:    #475569;
    --si-text-brand:       #60a5fa;
    --si-primary:          #60a5fa;
    --si-primary-hover:    #93c5fd;
    --si-primary-muted:    rgba(96,165,250,0.15);
    --si-primary-text:     #93c5fd;
    --si-success:          #4ade80;
    --si-danger:           #f87171;
    --si-warning:          #fbbf24;
    --si-border-subtle:    rgba(255,255,255,0.06);
    --si-border-default:   rgba(255,255,255,0.12);
    --si-border-strong:    rgba(255,255,255,0.2);
    --si-muted:            #94a3b8;
}

/* --- Accessibility: A11y widget --- */
.si-a11y-widget {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: var(--si-z-toast);
}

.si-a11y-btn {
    width: 3rem;
    height: 3rem;
    border-radius: var(--si-radius-full);
    background-color: var(--si-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--si-shadow-lg);
    transition: background-color var(--si-duration-fast) var(--si-ease-default),
                transform var(--si-duration-fast) var(--si-ease-bounce);
}

.si-a11y-btn:hover {
    background-color: var(--si-primary-hover);
    transform: scale(1.05);
}

.si-a11y-panel {
    position: absolute;
    bottom: 3.5rem;
    right: 0;
    width: 17rem;
    background: var(--si-surface-card);
    border: 1px solid var(--si-border-default);
    border-radius: var(--si-radius-lg);
    box-shadow: var(--si-shadow-xl);
    padding: var(--si-space-4);
}

.si-a11y-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--si-space-3);
    padding-bottom: var(--si-space-2);
    border-bottom: 1px solid var(--si-border-subtle);
}

.si-a11y-section {
    margin-bottom: var(--si-space-3);
}

.si-a11y-section-label {
    font-size: var(--si-text-xs);
    font-weight: var(--si-font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--si-text-muted);
    margin-bottom: var(--si-space-1);
}

/* --- Misc Bootstrap compat overrides --- */
.darker-border-checkbox.form-check-input { border-color: #929292; }

/* --- Payment page --- */
.si-payment-page { max-width: 480px; margin: 0 auto; padding: 2rem 0; }
.si-amount-chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.75rem; }
.si-payment-trust { display: flex; align-items: center; gap: 0.375rem; justify-content: center;
                    font-size: 0.75rem; color: var(--si-text-muted); margin-top: 0.75rem; }

/* --- Success / accept pages --- */
.si-success-page { display: flex; justify-content: center; align-items: center; min-height: 60vh; }
.si-success-icon { font-size: 4rem; display: block; margin-bottom: 1rem; }
.si-accept-page { display: flex; justify-content: center; padding: 3rem 1rem; }

/* --- Settings danger zone --- */
.si-danger-zone { border-left: 3px solid var(--mud-palette-error) !important; }