/* ============================================================
   LUNCH RÉSERVATION — Design System
   Feature: 002-modern-website-styling
   Architecture: flat minimal, CSS custom properties, no build step
   ============================================================ */

/* === 1. DESIGN TOKENS (:root) ========================================= */

:root {
    /* --- 1.1 Colour Tokens --- */
    --color-primary:            #B83B5E;   /* berry — primary action, links, navbar bg */
    --color-primary-dark:       #6A2C70;   /* plum  — hover, heading text */
    --color-accent:             #F08A5D;   /* apricot — secondary/success action bg */
    --color-accent-hover:       #d96e3f;   /* darker apricot */
    --color-sun:                #F9ED69;   /* decorative only — NEVER as text colour */
    --color-bg:                 #fff7f0;   /* page body background (warm off-white) */
    --color-surface:            #fffaf1;   /* card, table, alert surfaces */
    --color-surface-success:    #fffbdd;   /* success / info alert bg — 15:1 with --color-text */
    --color-surface-error:      #fce8ef;   /* error / danger alert bg — 13.6:1 with --color-text */
    --color-navbar-bg:          #B83B5E;   /* navbar solid fill (berry) */
    --color-navbar-text:        #ffe8ee;   /* navbar text / icon (near-white ~7:1 on navbar bg) */
    --color-text:               #2f1638;   /* body text (ink) — 15.62:1 on --color-surface */
    --color-text-muted:         rgba(47, 22, 56, 0.58);
    --color-border:             rgba(106, 44, 112, 0.15);
    --color-focus-ring:         rgba(184, 59, 94, 0.35);

    /* --- 1.2 Typography Tokens --- */
    --font-heading:             "Archivo Black", "Arial Black", system-ui, sans-serif;
    --font-body:                "DM Sans", "Helvetica Neue", Arial, sans-serif;
    --font-size-base:           1rem;
    --font-size-sm:             0.875rem;
    --font-size-lg:             1.125rem;
    --font-size-xl:             1.5rem;
    --font-size-2xl:            2rem;
    --line-height-base:         1.6;
    --line-height-heading:      1.2;
    --letter-spacing-heading:   0.03em;
    --font-weight-normal:       400;
    --font-weight-medium:       500;
    --font-weight-bold:         700;

    /* --- 1.3 Spacing Tokens --- */
    --space-xs:   0.25rem;
    --space-sm:   0.5rem;
    --space-md:   1rem;
    --space-lg:   1.5rem;
    --space-xl:   2rem;
    --space-2xl:  3rem;

    /* --- 1.4 Shape & Shadow Tokens --- */
    --radius-sm:        8px;
    --radius-md:        12px;
    --radius-lg:        16px;
    --radius-pill:      999px;
    --shadow-card:      0 2px 8px rgba(106, 44, 112, 0.12);
    --shadow-navbar:    0 2px 6px rgba(106, 44, 112, 0.18);
    --shadow-focus:     0 0 0 0.22rem var(--color-focus-ring);
    --shadow-btn-hover: 0 6px 16px rgba(106, 44, 112, 0.18);
    --transition-fast:  0.15s ease;

    /* --- 1.5 Interaction Colour Tokens (tokenised rgba values) --- */
    --color-navbar-hover-overlay: rgba(255, 255, 255, 0.12);
    --color-table-border-thead:   rgba(255, 255, 255, 0.12);
    --color-table-stripe:         rgba(249, 237, 105, 0.12);
    --color-link-underline:       rgba(184, 59, 94, 0.45);

    /* --- Bootstrap 5 variable remapping (Layer 2 override strategy) --- */
    --bs-primary:           var(--color-primary);
    --bs-body-color:        var(--color-text);
    --bs-body-bg:           var(--color-bg);
    --bs-link-color:        var(--color-primary);
    --bs-border-radius:     var(--radius-md);
    --bs-card-bg:           var(--color-surface);
    --bs-card-border-color: var(--color-border);
}

/* === 2. GLOBAL RESET ================================================== */

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: var(--line-height-base);
    font-size: var(--font-size-base);
}

/* === 2b. TYPOGRAPHY ==================================================== */

h1, h2, h3, h4, h5, h6, .card-title {
    font-family: var(--font-heading);
    letter-spacing: var(--letter-spacing-heading);
    line-height: var(--line-height-heading);
    color: var(--color-primary-dark);
}

a {
    color: var(--color-primary);
    text-decoration-color: var(--color-link-underline);
}

a:hover, a:active {
    color: var(--color-primary-dark);
}

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

.text-muted {
    color: var(--color-text-muted) !important;
}

/* === 3. NAVBAR ========================================================= */

.navbar {
    background-color: var(--color-navbar-bg);
    box-shadow: var(--shadow-navbar);
    padding: var(--space-sm) var(--space-md);
}

.navbar .navbar-brand {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    color: var(--color-navbar-text);
    text-decoration: none;
}

.navbar .navbar-brand:hover {
    color: var(--color-navbar-text);
    opacity: 0.9;
}

.navbar .btn-outline-light {
    border-color: var(--color-navbar-text);
    color: var(--color-navbar-text);
}

.navbar .btn-outline-light:hover {
    background-color: var(--color-navbar-hover-overlay);
    border-color: var(--color-navbar-text);
    color: var(--color-navbar-text);
}

/* === 4. CARDS & CONTAINERS ============================================= */

/* Glassmorphism removal: replace backdrop-filter + rgba fills with flat opaque surfaces */
.card, .table-responsive, .alert {
    background: var(--color-surface);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.card-body {
    border: none;
    border-radius: 0;
}

/* Remove decorative grid overlay (glassmorphism-era artifact) */
.app-shell::before {
    display: none;
}

.calendar-selection-card {
    max-width: 32rem;
    margin: 0 auto;
}

/* === 5. BUTTONS ======================================================== */

.btn {
    border-radius: var(--radius-pill);
    font-weight: var(--font-weight-bold);
    font-family: var(--font-body);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast),
                background-color var(--transition-fast), border-color var(--transition-fast),
                color var(--transition-fast);
    border-width: 2px;
    padding: 0.7rem 1.2rem;
}

.btn:hover, .btn:focus-visible {
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
}

.btn:active {
    transform: translateY(0);
}

/* Primary — berry */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-navbar-text);
}

.btn-primary:hover, .btn-primary:active, .btn-primary:focus {
    background-color: var(--color-primary-dark) !important;
    border-color: var(--color-primary-dark) !important;
    color: var(--color-navbar-text) !important;
}

/* Success / secondary action — apricot */
.btn-success {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-text);
}

.btn-success:hover, .btn-success:active, .btn-success:focus {
    background-color: var(--color-accent-hover) !important;
    border-color: var(--color-accent-hover) !important;
    color: var(--color-text) !important;
}

/* Outline primary — plum outline */
.btn-outline-primary {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
}

.btn-outline-primary:hover, .btn-outline-primary:active, .btn-outline-primary:focus {
    background-color: var(--color-primary-dark) !important;
    border-color: var(--color-primary-dark) !important;
    color: var(--color-navbar-text) !important;
}

/* Outline secondary — subtle */
.btn-outline-secondary {
    border-color: var(--color-border);
    border-width: 2px;
    color: var(--color-primary);
}

.btn-outline-secondary:hover, .btn-outline-secondary:active, .btn-outline-secondary:focus {
    background-color: var(--color-surface-success) !important;
    border-color: var(--color-border) !important;
    color: var(--color-primary-dark) !important;
}

/* Outline danger — berry outline, surface-error hover */
.btn-outline-danger {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-danger:hover, .btn-outline-danger:active, .btn-outline-danger:focus {
    background-color: var(--color-surface-error) !important;
    border-color: var(--color-primary) !important;
    color: var(--color-primary-dark) !important;
}

/* === 6. FORM CONTROLS ================================================== */

.form-control, .form-select {
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: #ffffff;
    padding: 0.6rem 0.9rem;
    font-family: var(--font-body);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-focus);
    outline: none;
    background-color: #ffffff;
    color: var(--color-text);
}

/* === 7. ALERTS ========================================================= */
/* WCAG AA fix: replaces gradient backgrounds (2.13:1 fail) with solid surfaces (13.6:1 pass) */

.alert {
    color: var(--color-text);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    border-left-width: 3px;
    border-left-style: solid;
    border-top: none;
    border-right: none;
    border-bottom: none;
}

.alert-success, .alert-info {
    background: var(--color-surface-success);
    border-left-color: var(--color-primary-dark);
    color: var(--color-text);
}

.alert-danger, .alert-warning, .alert-error {
    background: var(--color-surface-error);
    border-left-color: var(--color-primary);
    color: var(--color-text);
}

/* === 8. TABLE ========================================================== */

.table-responsive {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--color-primary-dark) !important;
    color: var(--color-navbar-text);
    border-color: var(--color-table-border-thead);
    text-transform: uppercase;
    font-size: 0.82rem;
    letter-spacing: 0.05em;
    font-family: var(--font-body);
    font-weight: var(--font-weight-bold);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: var(--color-table-stripe);
}

.table-bordered > :not(caption) > * > * {
    border-color: var(--color-border);
}

#statusMsg {
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-bold);
}

/* === 9. CALENDAR ======================================================= */

.calendar-day {
    cursor: pointer;
}

.selectable-day {
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.calendar-day .selectable-day > div:first-child {
    font-size: var(--font-size-sm);
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.selectable-day:hover {
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

.calendar-day .bg-primary {
    border-radius: var(--radius-lg);
    background: var(--color-primary) !important;
    color: var(--color-navbar-text);
    box-shadow: var(--shadow-card);
}

.calendar-day .bg-primary .small,
.calendar-day .bg-primary .lunch-label {
    color: var(--color-navbar-text) !important;
}

/* Locked days: reduced opacity + no interaction (moved from calendar.html inline style) */
.locked-day {
    opacity: 0.45;
    cursor: default;
    pointer-events: none;
}

/* === 9b. RATING WIDGET ================================================= */

.rating-stars {
    display: flex;
    justify-content: center;
    gap: 0.35rem;
}

.rating-star {
    background: transparent;
    border: 0;
    color: var(--color-primary);
    font-size: 1.75rem;
    line-height: 1;
    padding: 0 0.15rem;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.rating-star:hover,
.rating-star:focus-visible {
    color: var(--color-primary-dark);
    transform: scale(1.08);
}

.rating-star.is-selected {
    color: var(--color-accent);
}

/* === 10. RESPONSIVE ===================================================== */

/* Mobile tier (FR-008) — SC-003: 44px minimum tap target */
@media (max-width: 575.98px) {
    /* SC-003: 44px minimum tap target */
    .btn { min-height: 44px; padding: 0.68rem 1rem; }

    /* Reduce radius for tighter mobile feel */
    .card, .alert, .table-responsive,
    .selectable-day, .calendar-day .bg-primary { border-radius: var(--radius-sm) !important; }

    /* Scale down headings one step */
    h1 { font-size: var(--font-size-xl); }
    h2 { font-size: var(--font-size-lg); }

    /* App shell padding */
    .app-shell { padding-top: var(--space-md) !important; padding-bottom: var(--space-lg) !important; }
}

/* Tablet tier (FR-008) — Bootstrap grid (col-sm-*, col-md-*) handles column layout automatically */
@media (min-width: 576px) and (max-width: 991.98px) {
    /* Buttons: default padding retained (44px min-height required on mobile only per SC-003) */
    /* Cards and alerts: --radius-md (default) retained — no intermediate adjustment needed */
    .app-shell { padding-top: var(--space-lg) !important; }
}