/* ═══════════════════════════════════════════════════════
   GestionCom — Design System v4
   Teal accent · Deep slate sidebar · Warm canvas base
   ═══════════════════════════════════════════════════════ */

:root {
    color-scheme: light;

    /* ── Accent — teal ── */
    --gc-accent:        #0d9488;
    --gc-accent-hover:  #0f766e;
    --gc-accent-light:  #f0fdfa;
    --gc-accent-subtle: rgba(13, 148, 136, 0.08);
    --gc-accent-ring:   rgba(13, 148, 136, 0.25);

    /* ── Surfaces ── */
    --gc-bg:             #f8f7f4;
    --gc-surface:        #ffffff;
    --gc-surface-raised: #ffffff;
    --gc-surface-sunken: #f2f1ee;

    /* ── Borders ── */
    --gc-border:        #e5e3df;
    --gc-border-strong: #c8c5bf;

    /* ── Text ── */
    --gc-ink:           #1c1917;
    --gc-ink-secondary: #57534e;
    --gc-muted:         #a8a29e;

    /* ── Sidebar ── */
    --gc-sidebar-bg:        #1c2333;
    --gc-sidebar-link:      rgba(255, 255, 255, 0.5);
    --gc-sidebar-hover:     #ffffff;
    --gc-sidebar-active-bg: #0d9488;
    --gc-sidebar-separator: rgba(255, 255, 255, 0.08);

    /* ── Semantic ── */
    --gc-success:      #16a34a;
    --gc-success-bg:   #f0fdf4;
    --gc-success-text: #15803d;
    --gc-warning:      #d97706;
    --gc-warning-bg:   #fffbeb;
    --gc-warning-text: #92400e;
    --gc-danger:       #dc2626;
    --gc-danger-bg:    #fef2f2;
    --gc-danger-text:  #b91c1c;

    /* ── Radii ── */
    --gc-radius-sm: 3px;
    --gc-radius-md: 6px;
    --gc-radius-lg: 9px;
    --gc-radius-xl: 12px;

    /* ── Shadows ── */
    --gc-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --gc-shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.07), 0 1px 2px rgba(0, 0, 0, 0.04);
    --gc-shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --gc-shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.13);

    /* ── Transitions ── */
    --gc-ease:     cubic-bezier(0.4, 0, 0.2, 1);
    --gc-duration: 0.14s;

    /* ── Table ── */
    --gc-table-head-bg: var(--gc-surface-sunken);
    --gc-table-border:  var(--gc-border);

    /* ── Aliases ── */
    --gc-info-bg:    var(--gc-accent-subtle);
    --gc-neutral-bg: var(--gc-surface-sunken);
    --gc-accent-dark: var(--gc-accent-hover);
}

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

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: "Plus Jakarta Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--gc-bg);
    color: var(--gc-ink);
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ── */
a {
    color: var(--gc-accent);
    text-decoration: none;
    transition: color var(--gc-duration) var(--gc-ease);
}

a:hover {
    color: var(--gc-accent-hover);
}

h1, h2, h3, h4 {
    margin: 0;
    color: var(--gc-ink);
    line-height: 1.25;
}

h1 {
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

p {
    margin: 0;
    color: var(--gc-ink-secondary);
    line-height: 1.6;
}

/* ── Buttons ── */
button,
.app-button,
a.app-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4375rem;
    border: none;
    border-radius: var(--gc-radius-md);
    background: var(--gc-accent);
    color: #ffffff;
    padding: 0.5rem 1.125rem;
    font: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: -0.005em;
    transition: background-color var(--gc-duration) var(--gc-ease),
                box-shadow var(--gc-duration) var(--gc-ease),
                transform 0.1s var(--gc-ease);
}

button:hover,
.app-button:hover {
    background: var(--gc-accent-hover);
    box-shadow: 0 2px 10px rgba(13, 148, 136, 0.28);
}

button:active,
.app-button:active {
    transform: scale(0.975);
}

button:focus-visible,
.app-button:focus-visible {
    outline: 2px solid var(--gc-accent);
    outline-offset: 2px;
}

button:disabled,
.app-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── Inputs ── */
input, textarea, select {
    font: inherit;
    line-height: 1.5;
    border: 1.5px solid var(--gc-border);
    border-radius: var(--gc-radius-md);
    background: var(--gc-surface);
    color: var(--gc-ink);
    transition: border-color var(--gc-duration) var(--gc-ease),
                box-shadow var(--gc-duration) var(--gc-ease);
}

input::placeholder, textarea::placeholder {
    color: var(--gc-muted);
}

input:hover, textarea:hover, select:hover {
    border-color: var(--gc-border-strong);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--gc-accent);
    box-shadow: 0 0 0 3px var(--gc-accent-ring);
}

/* ── Table base ── */
table {
    width: 100%;
}

thead th {
    font-weight: 600;
}

code {
    font-family: "Cascadia Code", "JetBrains Mono", Consolas, monospace;
    font-size: 0.875em;
    background: var(--gc-surface-sunken);
    padding: 0.1em 0.3em;
    border-radius: var(--gc-radius-sm);
}

/* ── Validation states ── */
.valid.modified:not([type=checkbox]) {
    border-color: var(--gc-success);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12);
}

.invalid {
    border-color: var(--gc-danger);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.validation-message {
    color: var(--gc-danger);
    font-size: 0.7875rem;
    margin-top: 0.25rem;
}

/* ── Error boundary ── */
.blazor-error-boundary {
    background: var(--gc-danger);
    color: white;
    border-radius: var(--gc-radius-lg);
    padding: 0.875rem 1.125rem;
    font-size: 0.875rem;
}

.blazor-error-boundary::after {
    content: "Une erreur s'est produite.";
}

/* ── Utility button variants ── */
.btn-secondary {
    background: var(--gc-surface);
    color: var(--gc-ink);
    border: 1.5px solid var(--gc-border);
    box-shadow: var(--gc-shadow-xs);
}

.btn-secondary:hover {
    background: var(--gc-surface-sunken);
    box-shadow: var(--gc-shadow-sm);
}

.btn-danger {
    background: var(--gc-danger-bg);
    color: var(--gc-danger-text);
    border: 1.5px solid rgba(220, 38, 38, 0.2);
    box-shadow: none;
}

.btn-danger:hover {
    background: #fee2e2;
    box-shadow: none;
}

/* ── Shared page / layout patterns ── */
.app-page-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.app-back-link {
    color: var(--gc-ink-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.app-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.app-toolbar-left {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.9rem;
}

.app-search,
.app-input {
    width: 100%;
    padding: 0.9rem 1rem;
}

.app-search {
    width: min(440px, 100%);
}

.app-count {
    color: var(--gc-ink-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.app-panel {
    padding: 1.25rem;
    border: 1px solid var(--gc-border);
    border-radius: var(--gc-radius-xl);
    background: var(--gc-surface-raised);
    box-shadow: var(--gc-shadow-sm);
}

.app-section-header,
.app-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.app-section-header {
    margin-bottom: 1rem;
}

.app-section-header span,
.app-detail-meta,
.app-created-by {
    color: var(--gc-ink-secondary);
    font-size: 0.95rem;
}

.app-form-stack {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.app-form-grid {
    display: grid;
    gap: 1rem;
}

.app-form-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.app-form-grid-full {
    grid-column: 1 / -1;
}

.app-form-field {
    display: grid;
    gap: 0.45rem;
}

.app-form-field label {
    font-weight: 700;
    color: var(--gc-ink);
}

.app-readonly {
    display: flex;
    align-items: center;
    min-height: 52px;
    padding: 0.9rem 1rem;
    border-radius: var(--gc-radius-md);
    border: 1.5px solid var(--gc-border);
    background: var(--gc-surface-sunken);
    color: var(--gc-ink);
    font-weight: 700;
}

.app-line-adder {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(120px, 160px) auto;
    gap: 1rem;
    align-items: end;
    margin-bottom: 1rem;
}

.app-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.app-actions-inline {
    justify-content: flex-start;
    margin-top: 0;
}

.app-table-shell {
    overflow-x: auto;
    border: 1px solid var(--gc-border);
    border-radius: var(--gc-radius-xl);
    background: var(--gc-surface-raised);
    box-shadow: var(--gc-shadow-sm);
}

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

.app-table th,
.app-table td {
    padding: 1rem 1.1rem;
    border-bottom: 1px solid var(--gc-table-border);
    text-align: left;
    vertical-align: top;
}

.app-table th {
    background: var(--gc-table-head-bg);
    color: var(--gc-ink);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.app-table .amount {
    text-align: right;
    white-space: nowrap;
}

.app-row-interactive {
    cursor: pointer;
    transition: background-color var(--gc-duration) var(--gc-ease);
}

.app-row-interactive:hover {
    background: var(--gc-info-bg);
}

.app-row-interactive:focus {
    outline: 2px solid var(--gc-accent);
    outline-offset: -2px;
    background: var(--gc-info-bg);
}

.app-message,
.app-state,
.app-inline-error {
    padding: 1rem 1.1rem;
    border-radius: var(--gc-radius-xl);
}

.app-state {
    border: 1px dashed var(--gc-border-strong);
    background: var(--gc-surface-sunken);
    color: var(--gc-ink-secondary);
}

.app-message-success {
    border: 1px solid rgba(22, 163, 74, 0.14);
    background: var(--gc-success-bg);
    color: var(--gc-success-text);
}

.app-message-error,
.app-inline-error {
    border: 1px solid rgba(220, 38, 38, 0.16);
    background: var(--gc-danger-bg);
    color: var(--gc-danger-text);
}

.app-message-warning {
    border: 1px solid rgba(217, 119, 6, 0.16);
    background: var(--gc-warning-bg);
    color: var(--gc-warning-text);
}

.app-summary-grid {
    display: grid;
    gap: 1rem;
}

.app-summary-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.app-summary-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.app-summary-card {
    border: 1px solid var(--gc-border);
    border-radius: var(--gc-radius-xl);
    background: var(--gc-surface-raised);
    padding: 1.2rem;
    box-shadow: var(--gc-shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.app-card-label {
    color: var(--gc-ink-secondary);
    font-size: 0.9rem;
}

.app-summary-card strong {
    font-size: 1.18rem;
}

.app-detail-grid,
.app-split-grid {
    display: grid;
    gap: 1rem;
}

.app-detail-grid {
    grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
}

.app-split-grid {
    grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
}

.app-info-list {
    display: grid;
    gap: 0.95rem;
    margin: 0;
}

.app-info-list div {
    display: grid;
    gap: 0.25rem;
}

.app-info-list dt {
    color: var(--gc-ink-secondary);
    font-size: 0.9rem;
}

.app-info-list dd {
    margin: 0;
    color: var(--gc-ink);
}

.app-item-list {
    display: grid;
    gap: 0.9rem;
}

.app-item-card {
    padding: 1rem 1.05rem;
    border-radius: var(--gc-radius-xl);
    border: 1px solid var(--gc-border);
    background: var(--gc-surface-sunken);
}

@media (max-width: 900px) {
    .app-form-grid-3,
    .app-summary-grid-2,
    .app-line-adder,
    .app-summary-grid-4,
    .app-detail-grid,
    .app-split-grid {
        grid-template-columns: 1fr;
    }

    .app-detail-header,
    .app-section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .app-actions,
    .app-toolbar {
        align-items: stretch;
    }

    .app-toolbar-left,
    .app-search,
    .app-actions button,
    .app-actions a,
    .app-line-adder button {
        width: 100%;
    }
}