/* ============================================================
   NeuroTelligence Web — unified design tokens ("language B")
   ------------------------------------------------------------
   Single source of truth for color, type, radius, shadow, z-index
   and mobile layout. Brand accent is PURPLE #512BD4, matching the
   iOS/Android asset catalogs. The older blue Bootstrap accent has
   been retired — components that referenced var(--accent[, #512BD4])
   now resolve to brand purple automatically.
   ============================================================ */
:root {
    /* Brand accent (purple) */
    --accent: #512BD4;
    --accent-rgb: 81, 43, 212;
    --accent-strong: #4421b0;      /* pressed / hover-darken */
    --accent-soft: rgba(81, 43, 212, 0.10);
    --accent-tint: rgba(81, 43, 212, 0.06);
    /* Brand bar gradient (desktop top nav + auth nav). Retired blue (#0b3d91→#0d6efd). */
    --sidebar-bg: linear-gradient(180deg, #5b34e0, #4421b0);

    /* Surfaces & text */
    --bg: #f4f7fb;
    --card-bg: #ffffff;
    --surface-contrast: rgba(15, 23, 42, 0.06);
    --hairline: rgba(60, 60, 67, 0.16);
    --text-primary: #1f2937;
    --text-secondary: #475569;
    --muted: #64748b;

    /* Semantic palette (shared good/warn/bad + info) */
    --success: #22c55e;
    --warning: #f97316;
    --danger: #ef4444;
    --info: #0ea5e9;
    --success-rgb: 34, 197, 94;
    --warning-rgb: 249, 115, 22;
    --danger-rgb: 239, 68, 68;

    /* Radii */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-card: 14px;
    --radius-lg: 18px;
    --radius-pill: 9999px;

    /* Shadows */
    --shadow-card: 0 6px 18px rgba(15, 23, 42, 0.06);
    --shadow-pop: 0 10px 32px rgba(0, 0, 0, 0.14), 0 2px 8px rgba(0, 0, 0, 0.06);

    /* Typography — native system stack (no web-font fetch) */
    --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
        Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;

    /* Layout */
    --tap-min: 44px;                 /* minimum touch target */
    --content-gutter: 1rem;
    --bottom-nav-height: 68px;       /* visual height of the floating pill */
    --bottom-nav-space: calc(var(--bottom-nav-height) + 18px + env(safe-area-inset-bottom));

    /* Z-index scale */
    --z-nav: 1030;
    --z-header: 1040;
    --z-overlay: 1900;
    --z-modal: 2000;

    /* Glassmorphism (shared by bottom nav, sheets, future top bar) */
    --glass-bg: rgba(249, 249, 249, 0.62);
    --glass-blur: saturate(180%) blur(30px);
    --glass-border: 0.5px solid rgba(60, 60, 67, 0.16);

    /* Bootstrap variable bridge — recolors .bg-primary/.text-primary/.badge/
       .border-primary and link colors to brand purple in one place. */
    --bs-primary: var(--accent);
    --bs-primary-rgb: var(--accent-rgb);
    --bs-link-color: var(--accent);
    --bs-link-color-rgb: var(--accent-rgb);
    --bs-link-hover-color: var(--accent-strong);
}

/* Reset and base */
html, body {
    height: 100%;
    margin: 0;
    font-family: var(--font-system);
    background: var(--bg);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

a, .btn-link {
    color: var(--accent);
}

a:hover, .btn-link:hover {
    color: var(--accent-strong);
}

/* Page layout */
.page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 1 auto;
    padding: 0;
}

/* Content surface */
.content {
    padding-top: 0.1rem;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    border: 1px solid var(--surface-contrast);
    box-shadow: var(--shadow-card);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    font-weight: 600;
    padding: 0.75rem 1rem;
    background: linear-gradient(90deg, rgba(var(--accent-rgb), 0.06), rgba(var(--accent-rgb), 0.03));
}

.card-body {
    padding: 1rem;
}

/* Tables */
.table-hover tbody tr:hover {
    background-color: rgba(var(--accent-rgb), 0.04);
}

.badge {
    font-weight: 500;
}

/* Buttons */
.btn {
    transition: transform .12s ease, box-shadow .12s ease, background .15s ease;
    border-radius: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.btn-primary {
    --bs-btn-bg: var(--accent);
    --bs-btn-border-color: var(--accent);
    --bs-btn-hover-bg: var(--accent-strong);
    --bs-btn-hover-border-color: var(--accent-strong);
    --bs-btn-active-bg: var(--accent-strong);
    --bs-btn-active-border-color: var(--accent-strong);
    --bs-btn-disabled-bg: var(--accent);
    --bs-btn-disabled-border-color: var(--accent);
    color: #fff;
    background: linear-gradient(180deg, var(--accent), var(--accent-strong));
    border-color: rgba(0, 0, 0, 0.06);
}

.btn-outline-primary {
    --bs-btn-color: var(--accent);
    --bs-btn-border-color: rgba(var(--accent-rgb), 0.40);
    --bs-btn-hover-bg: var(--accent);
    --bs-btn-hover-border-color: var(--accent);
    --bs-btn-active-bg: var(--accent-strong);
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.40);
}

/* Forms */
.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 0.2rem rgba(var(--accent-rgb), 0.18);
    border-color: var(--accent);
}

.form-check-input:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

.validation-message {
    color: #c92a2a;
}

/* Nav adjustments (keep contrast on dark sidebar) */
.nav-link {
    color: rgba(255, 255, 255, 0.92) !important;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.06) !important;
    color: white !important;
}

.navbar-brand {
    color: white !important;
    font-weight: 700;
}

/* ============================================================
   Shared utility layer
   ------------------------------------------------------------
   Promotes patterns the codebase had duplicated 3–6× into one
   tokenized definition. Adopt incrementally per surface.
   ============================================================ */

/* Glass surface (bottom nav, sheets, mobile top bar) */
.glass {
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
}

/* Circular icon-only button (nav icons, dismiss, edit/delete) */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--tap-min);
    height: var(--tap-min);
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.05rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background .15s ease, color .15s ease, transform .12s ease;
}

.icon-btn:hover { background: rgba(0, 0, 0, 0.06); }
.icon-btn:active { transform: scale(0.92); }

/* Pill / chip (rounded tappable label, active = filled accent) */
.chip {
    --chip-accent: var(--accent);
    --chip-accent-rgb: var(--accent-rgb);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(var(--chip-accent-rgb), 0.30);
    background: rgba(var(--chip-accent-rgb), 0.07);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
}

.chip:hover { background: rgba(var(--chip-accent-rgb), 0.12); }
.chip.is-active,
.chip[aria-pressed="true"] {
    background: var(--chip-accent);
    border-color: var(--chip-accent);
    color: #fff;
}

/* Small helpers */
.text-muted { color: var(--muted) !important; }
.center { text-align: center; }

/* Error boundary style */
.blazor-error-boundary {
    background: linear-gradient(90deg, #ffefef, #fff);
    border-left: 4px solid #b32121;
    padding: 1rem;
}

/* subtle focus outlines for accessibility */
:focus-visible {
    outline: 3px solid rgba(var(--accent-rgb), 0.35);
    outline-offset: 2px;
}

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

/* Reduce Bootstrap container gutter on mobile so content fills the screen */
@media (max-width: 767.98px) {
    .container, .container-fluid {
        padding-left: var(--content-gutter, 0.5rem);
        padding-right: var(--content-gutter, 0.5rem);
        --content-gutter: 0.5rem;
    }

    a, .btn-link { font-size: 0.9rem; }
}

/* Full-bleed chart cards on mobile */
@media (max-width: 767.98px) {
    .card:has(canvas) {
        width: 100vw;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
        border-radius: 0;
        border-left-width: 0;
        border-right-width: 0;
    }
    .card:has(canvas) .card-body {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
}

/* MoodCheckin spider-chart label visibility — these rules live globally
   because the <text> elements are emitted via MarkupString and don't pick
   up Blazor's scoped-CSS attribute. Desktop shows full names; mobile
   collapses to single letters and the legend strip carries the names. */
.spider-label--short { display: none; }
.spider-label--long  { display: block; }

@media (max-width: 767.98px) {
    .spider-label--long  { display: none; }
    .spider-label--short { display: block; }
}