/* =============================================================================
   FamilyApp - app.css
   Convergence point: ONE author (SPEC 12). Feature agents use .razor.css
   isolation for component-local styling and reuse the tokens defined here.

   Mobile-first, designed for 360-430 px and one thumb (SPEC 10.4).
   No Bootstrap, no CDN, no build step (SPEC 2.1 / 10.4.12).
   ============================================================================= */

/* -----------------------------------------------------------------------------
   1. Design tokens
   Colour has exactly ONE meaning in this app: red = overdue (SPEC 10.2).
   Member colours (ColorHex) are used only as a 4 px left rail and avatar
   background - never as a card background.
   -------------------------------------------------------------------------- */
:root {
    color-scheme: light dark;

    /* Surfaces */
    --color-bg: #f6f7f9;
    --color-surface: #ffffff;
    --color-surface-2: #eef0f4;
    --color-border: #d9dde4;
    --color-border-strong: #b7bfcb;

    /* Text */
    --color-text: #14181f;
    --color-text-muted: #5b6472;
    --color-text-inverse: #ffffff;

    /* Brand / interactive */
    --color-accent: #1d4ed8;
    --color-accent-strong: #1740b0;
    --color-accent-soft: #e5ecfd;
    --color-focus: #1d4ed8;

    /* Status carriers (SPEC 10.2) - never the only carrier of meaning */
    --color-danger: #b3261e;          /* PO TERMINIE - the single meaning of red */
    --color-danger-fg: #7f1d1d;
    --color-danger-bg: #fdecea;
    --color-warning: #b45309;         /* DZIS */
    --color-warning-bg: #fdf3e3;
    --color-info: #1d4ed8;            /* CZEKA NA POTWIERDZENIE */
    --color-info-bg: #e5ecfd;
    --color-success: #047857;         /* ZROBIONE / ZATWIERDZONE */
    --color-success-bg: #e6f4ef;
    --color-proposed: #6d28d9;        /* PROPOZYCJA - dashed outline */
    --color-proposed-bg: #f1ebfd;
    --color-family: #64748b;          /* shared "Rodzina" calendar (SPEC 3.3) */
    --color-done: #8b94a3;            /* struck-through / bought */

    /* Metrics */
    --header-height: 48px;
    --nav-height: 56px;
    --row-height: 56px;
    --touch-min: 44px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 12px;
    --gap-lg: 16px;
    --gap-xl: 24px;
    --shadow-1: 0 1px 2px rgba(20, 24, 31, .08), 0 1px 3px rgba(20, 24, 31, .06);
    --shadow-2: 0 6px 18px rgba(20, 24, 31, .16);

    /* Safe areas (iPhone notch / home indicator) */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);

    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0b1220;
        --color-surface: #151d2c;
        --color-surface-2: #1e2739;
        --color-border: #2b3549;
        --color-border-strong: #3d4a63;

        --color-text: #e8ecf3;
        --color-text-muted: #9aa5b6;
        --color-text-inverse: #0b1220;

        --color-accent: #7ea2ff;
        --color-accent-strong: #a5bcff;
        --color-accent-soft: #1c2a4d;
        --color-focus: #7ea2ff;

        --color-danger: #ff6b60;
        --color-danger-fg: #ffb4ac;
        --color-danger-bg: #3a1a17;
        --color-warning: #f0a94b;
        --color-warning-bg: #3a2a12;
        --color-info: #7ea2ff;
        --color-info-bg: #1c2a4d;
        --color-success: #4ecfa0;
        --color-success-bg: #102d24;
        --color-proposed: #b79bff;
        --color-proposed-bg: #241a3d;
        --color-family: #94a3b8;
        --color-done: #6b7688;

        --shadow-1: 0 1px 2px rgba(0, 0, 0, .5);
        --shadow-2: 0 8px 24px rgba(0, 0, 0, .6);
    }
}

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.45;
    overscroll-behavior-y: none;
}

h1, h2, h3, h4 {
    margin: 0 0 var(--gap-sm);
    line-height: 1.25;
    font-weight: 650;
}

h1 { font-size: 1.35rem; }
h2 { font-size: 1.12rem; }
h3 { font-size: 1rem; }

p { margin: 0 0 var(--gap-md); }

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

a:hover { text-decoration: underline; }

img, svg { max-width: 100%; }

:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* User-supplied text is rendered as TEXT only - never MarkupString (SPEC 2.5 rule 12). */
.pre-wrap {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* -----------------------------------------------------------------------------
   3. Shell: header + content + bottom navigation
   -------------------------------------------------------------------------- */
.app-shell {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    height: calc(var(--header-height) + var(--safe-top));
    padding: var(--safe-top) calc(var(--gap-lg) + var(--safe-right)) 0 calc(var(--gap-lg) + var(--safe-left));
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.app-header__brand {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: .01em;
    color: var(--color-text);
    text-decoration: none;
}

.app-header__brand:hover { text-decoration: none; }

.app-header__actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.app-main {
    flex: 1 1 auto;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding:
        var(--gap-lg)
        calc(var(--gap-lg) + var(--safe-right))
        calc(var(--nav-height) + var(--safe-bottom) + var(--gap-xl))
        calc(var(--gap-lg) + var(--safe-left));
}

.page-status {
    padding: var(--gap-xl) var(--gap-lg);
    color: var(--color-text-muted);
    text-align: center;
}

/* Bottom navigation - 5 destinations, zero hamburger (SPEC 10.4.1) */
.bottom-nav {
    position: fixed;
    inset: auto 0 0 0;
    z-index: 40;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    height: calc(var(--nav-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: var(--touch-min);
    padding: 4px 2px;
    color: var(--color-text-muted);
    font-size: .72rem;
    font-weight: 600;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav__item:hover { text-decoration: none; }

.bottom-nav__icon {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.bottom-nav__item.active {
    color: var(--color-accent);
}

.bottom-nav__item.active .bottom-nav__label {
    font-weight: 700;
}

/* -----------------------------------------------------------------------------
   4. Surfaces: cards, list rows, tiles
   -------------------------------------------------------------------------- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-1);
    padding: var(--gap-lg);
    margin-bottom: var(--gap-md);
}

.card--flush { padding: 0; }

/* 4 px member rail - the only place a member colour touches a card (SPEC 10.2) */
.card--member {
    border-left: 4px solid var(--member-color, var(--color-family));
}

.stack { display: flex; flex-direction: column; gap: var(--gap-md); }
.row { display: flex; align-items: center; gap: var(--gap-sm); }
.row--between { justify-content: space-between; }
.grow { flex: 1 1 auto; min-width: 0; }
.muted { color: var(--color-text-muted); }
.small { font-size: .84rem; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Whole row is the touch target, not just the checkbox (SPEC 10.4.3) */
.list { list-style: none; margin: 0; padding: 0; }

.list__row {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    width: 100%;
    min-height: var(--row-height);
    padding: var(--gap-sm) var(--gap-lg);
    background: var(--color-surface);
    border: 0;
    border-bottom: 1px solid var(--color-border);
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.list__row:last-child { border-bottom: 0; }
.list__row:active { background: var(--color-surface-2); }

.section-heading {
    position: sticky;
    top: calc(var(--header-height) + var(--safe-top));
    z-index: 10;
    padding: var(--gap-xs) var(--gap-lg);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}

/* Home tiles - min 88 px (SPEC 8) */
.tiles {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap-md);
}

.tile {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    min-height: 88px;
    padding: var(--gap-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    color: var(--color-text);
    font-size: 1.05rem;
    font-weight: 650;
    text-decoration: none;
}

.tile:hover { text-decoration: none; }
.tile:active { transform: scale(.995); }

/* -----------------------------------------------------------------------------
   5. Status carriers - colour is NEVER alone (SPEC 10.2)
   -------------------------------------------------------------------------- */
.is-overdue {
    background: var(--color-danger-bg);
    color: var(--color-danger-fg);
    border-color: var(--color-danger);
}

.is-today { border: 2px solid var(--color-warning); }
.is-waiting { border: 2px solid var(--color-info); }
.is-rework { border: 2px solid var(--color-danger); }

.is-proposed {
    border: 2px dashed var(--color-proposed);
    background: var(--color-proposed-bg);
}

.is-done {
    color: var(--color-done);
    text-decoration: line-through;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-xs);
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    font-size: .76rem;
    font-weight: 700;
    white-space: nowrap;
}

.badge--overdue { background: var(--color-danger-bg); color: var(--color-danger-fg); }
.badge--today { background: var(--color-warning-bg); color: var(--color-warning); }
.badge--waiting { background: var(--color-info-bg); color: var(--color-info); }
.badge--proposed { background: var(--color-proposed-bg); color: var(--color-proposed); }
.badge--done { background: var(--color-success-bg); color: var(--color-success); }

/* Member avatar / chip - initials on the member colour */
.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--member-color, var(--color-family));
    color: #fff;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .02em;
}

.avatar--lg { width: 44px; height: 44px; font-size: .95rem; }

/* -----------------------------------------------------------------------------
   6. Controls
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gap-sm);
    min-height: var(--touch-min);
    padding: 10px 18px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-weight: 650;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn:active:not(:disabled) { transform: translateY(1px); }

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

.btn--primary:hover:not(:disabled) { background: var(--color-accent-strong); }

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

.btn--ghost { background: transparent; border-color: transparent; }
.btn--block { width: 100%; }
.btn--lg { min-height: 56px; font-size: 1.05rem; }

/* Floating action button, clear of the bottom navigation */
.fab {
    position: fixed;
    right: calc(var(--gap-lg) + var(--safe-right));
    bottom: calc(var(--nav-height) + var(--safe-bottom) + var(--gap-lg));
    z-index: 35;
    width: 56px;
    height: 56px;
    border: 0;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    font-size: 1.6rem;
    line-height: 1;
    box-shadow: var(--shadow-2);
    cursor: pointer;
}

/* Sticky save bar for long forms (SPEC 10.4.5) */
.sticky-actions {
    position: sticky;
    bottom: calc(var(--nav-height) + var(--safe-bottom));
    z-index: 20;
    display: flex;
    gap: var(--gap-sm);
    padding: var(--gap-md) 0;
    background: linear-gradient(to top, var(--color-bg) 70%, transparent);
}

/* Quick add bar pinned above the bottom navigation (SPEC 10.4.6) */
.quick-add {
    position: fixed;
    left: 0;
    right: 0;
    bottom: calc(var(--nav-height) + var(--safe-bottom));
    z-index: 35;
    display: flex;
    gap: var(--gap-sm);
    padding: var(--gap-sm) calc(var(--gap-lg) + var(--safe-right)) var(--gap-sm) calc(var(--gap-lg) + var(--safe-left));
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

/* Forms. font-size must stay >= 16 px or Safari zooms on focus (SPEC 10.4.4). */
.field { display: flex; flex-direction: column; gap: var(--gap-xs); margin-bottom: var(--gap-md); }

.field__label {
    font-size: .86rem;
    font-weight: 650;
    color: var(--color-text-muted);
}

input[type="text"],
input[type="search"],
input[type="email"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
    width: 100%;
    min-height: var(--touch-min);
    padding: 10px 12px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    font-size: 16px;
}

textarea { min-height: 120px; resize: vertical; }

input[type="checkbox"],
input[type="radio"] {
    width: 22px;
    height: 22px;
    accent-color: var(--color-accent);
}

.validation-message,
.field__error {
    color: var(--color-danger);
    font-size: .86rem;
    font-weight: 600;
}

.invalid { border-color: var(--color-danger) !important; }

/* Chips / segmented control / day circles */
.chips { display: flex; flex-wrap: wrap; gap: var(--gap-sm); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-xs);
    min-height: var(--touch-min);
    padding: 6px 14px;
    border: 1px solid var(--color-border-strong);
    border-radius: 999px;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.chip--on {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.segmented {
    display: flex;
    gap: 2px;
    padding: 3px;
    background: var(--color-surface-2);
    border-radius: var(--radius-md);
}

.segmented__item {
    flex: 1 1 0;
    min-height: var(--touch-min);
    border: 0;
    border-radius: calc(var(--radius-md) - 3px);
    background: transparent;
    color: var(--color-text-muted);
    font: inherit;
    font-weight: 650;
    cursor: pointer;
}

.segmented__item--on {
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-1);
}

.day-circles { display: flex; gap: var(--gap-sm); }

.day-circle {
    width: var(--touch-min);
    height: var(--touch-min);
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.day-circle--on {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
}

/* Bottom sheet - the only permitted "modal" (SPEC 10.4.2) */
.sheet-backdrop {
    position: fixed;
    inset: 0;
    z-index: 50;
    background: rgba(10, 14, 22, .45);
}

.sheet {
    position: fixed;
    inset: auto 0 0 0;
    z-index: 51;
    padding: var(--gap-lg) var(--gap-lg) calc(var(--gap-lg) + var(--safe-bottom));
    background: var(--color-surface);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    box-shadow: var(--shadow-2);
}

.sheet__row {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: var(--row-height);
    padding: 0 var(--gap-sm);
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

/* Empty state */
.empty-state {
    padding: var(--gap-xl) var(--gap-lg);
    text-align: center;
    color: var(--color-text-muted);
}

/* Toast */
.toast {
    position: fixed;
    left: calc(var(--gap-lg) + var(--safe-left));
    right: calc(var(--gap-lg) + var(--safe-right));
    bottom: calc(var(--nav-height) + var(--safe-bottom) + var(--gap-lg));
    z-index: 60;
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    padding: var(--gap-md) var(--gap-lg);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    box-shadow: var(--shadow-2);
}

.toast--error {
    background: var(--color-danger-bg);
    border-color: var(--color-danger);
    color: var(--color-danger-fg);
}

.toast__text { flex: 1 1 auto; }

.toast__close {
    min-width: var(--touch-min);
    min-height: var(--touch-min);
    border: 0;
    background: transparent;
    color: inherit;
    font-size: 1rem;
    cursor: pointer;
}

/* -----------------------------------------------------------------------------
   7. Framework overrides
   -------------------------------------------------------------------------- */
#blazor-error-ui {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    padding: var(--gap-md) var(--gap-lg) calc(var(--gap-md) + var(--safe-bottom));
    background: var(--color-warning-bg);
    color: var(--color-text);
    box-shadow: var(--shadow-2);
}

#blazor-error-ui .dismiss {
    position: absolute;
    top: 8px;
    right: 12px;
    cursor: pointer;
}

.blazor-error-boundary {
    padding: var(--gap-md) var(--gap-lg);
    border-radius: var(--radius-md);
    background: var(--color-danger-bg);
    color: var(--color-danger-fg);
}

/* -----------------------------------------------------------------------------
   8. Wider screens - same layout, just roomier (SPEC 10.4)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
    .tiles { grid-template-columns: repeat(3, 1fr); }
    .app-main { padding-left: var(--gap-xl); padding-right: var(--gap-xl); }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}

/* -----------------------------------------------------------------------------
   8. Page-level error (FamilyErrorBoundary) - added by the integrating agent.
   The boundary replaces the failing subtree, so it needs a normal block layout
   rather than the fixed toast, which would float over an empty screen.
   -------------------------------------------------------------------------- */
.page-error {
    padding: var(--gap-lg) 0;
}

.toast--inline {
    position: static;
    margin-bottom: var(--gap-lg);
}

.page-error__actions {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
}

.page-error__actions .btn {
    min-height: var(--touch-min);
}