/* ==========================================================================
   MX Les Frangines — app.css
   Mobile-first, plain CSS with custom properties
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Reset / Normalise
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

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

/* --------------------------------------------------------------------------
   2. Design Tokens (CSS Custom Properties)
   -------------------------------------------------------------------------- */
:root {
  --color-primary: #d3477d;       /* pink — highlights, active states */
  --color-secondary: #1A1A1A;     /* near-black — nav background */
  --color-lightpink: #fbf1f4;     /* near-white — nav background */
  --color-surface: #FFFFFF;       /* white — page & card backgrounds */
  --color-background: #FFFFFF;    /* white — body background */
  --color-text: #333333;          /* dark gray — body text */
  --color-text-muted: #666666;    /* medium gray — secondary text */
  --color-success: #2E7D32;
  --color-warning: #F57C00;
  --color-danger: #C62828;
  --color-footer-bg: #E91E8C;     /* pink — footer background */
  --color-footer-text: #FFFFFF;   /* white — footer text */
  --font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --border-radius: 4px;
  --transition: 0.2s ease;
}

/* --------------------------------------------------------------------------
   3. Base Styles (Mobile-first, 320px default)
   -------------------------------------------------------------------------- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.5;
  font-size: 1rem;
  min-width: 320px;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
}

h1, h2 {
  text-transform: uppercase;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   4. Navigation (.nav)
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-lightpink);
  height: 56px;
}

.nav__logo {
  display: flex;
  align-items: center;
  color: var(--color-surface);
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}

.nav__logo:hover,
.nav__logo:focus {
  text-decoration: none;
  color: var(--color-primary);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Right-side group: login button + hamburger */
.nav__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: auto;
}

.nav__login-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px var(--spacing-md);
  font-size: 0.9rem;
  border-radius: var(--border-radius);
  white-space: nowrap;
}

.nav__login-btn .material-icons {
  font-size: 1.1rem;
}

.nav__icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
  transition: color var(--transition);
}

.nav__icon-btn:hover,
.nav__icon-btn:focus {
  color: var(--color-primary);
}

/* Drawer — full-screen slide-in from left (mobile) */
.nav__drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 99;
  background-color: var(--color-secondary);
  transform: translateX(-100%);
  transition: transform var(--transition);
  display: flex;
  flex-direction: column;
  padding: var(--spacing-2xl) var(--spacing-xl);
  overflow-y: auto;
}

.nav--open .nav__drawer {
  transform: translateX(0);
}

.nav__drawer-close {
  align-self: flex-end;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-surface);
  font-size: 1.5rem;
  padding: var(--spacing-xs);
  margin-bottom: var(--spacing-xl);
  transition: color var(--transition);
}

.nav__drawer-close:hover,
.nav__drawer-close:focus {
  color: var(--color-primary);
}

/* Links — vertical list in drawer on mobile */
.nav__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.nav__links a {
  color: var(--color-text);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition);
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
}

.nav__links a:hover,
.nav__links a:focus,
.nav__links a.active {
  color: var(--color-primary);
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius);
}

.nav__links a.active {
  border-bottom-color: var(--color-primary);
}

/* Desktop nav (min-width: 1024px) */
@media (min-width: 1024px) {
  .nav__hamburger {
    display: none;
  }

  .nav__drawer {
    position: static;
    width: auto;
    height: auto;
    transform: none;
    background-color: transparent;
    flex-direction: row;
    align-items: center;
    padding: 0;
    overflow: visible;
  }

  .nav--open .nav__drawer {
    transform: none;
  }

  .nav__drawer-close {
    display: none;
  }

  .nav__links {
    flex-direction: row;
    gap: var(--spacing-xl);
    align-items: center;
  }

  .nav__links a {
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
  }

  .nav__links a:hover,
  .nav__links a:focus {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--color-surface);
  }

  .nav__links a.active {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--color-primary);
  }
}

/* --------------------------------------------------------------------------
   5. Hero Section (.hero)
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* Semi-transparent dark overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 720px;
}

.hero__title {
  color: var(--color-surface);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.hero__subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  margin-bottom: var(--spacing-xl);
}

.hero__cta {
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  display: inline-block;
  transition: opacity var(--transition), transform var(--transition);
}

.hero__cta:hover,
.hero__cta:focus {
  opacity: 0.9;
  transform: translateY(-1px);
  text-decoration: none;
  color: var(--color-surface);
}

/* --------------------------------------------------------------------------
   6. Buttons (.btn)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: opacity var(--transition), background-color var(--transition),
              color var(--transition), border-color var(--transition),
              transform var(--transition);
  white-space: nowrap;
}

.btn:hover,
.btn:focus {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn--primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-surface);
}

.btn--primary:hover,
.btn--primary:focus {
  opacity: 0.88;
  color: var(--color-surface);
}

.btn--secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--secondary:hover,
.btn--secondary:focus {
  background-color: var(--color-primary);
  color: var(--color-surface);
}

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

.btn--danger:hover,
.btn--danger:focus {
  opacity: 0.88;
  color: var(--color-surface);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* --------------------------------------------------------------------------
   7. Cards (.card)
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-surface);
  border-radius: var(--border-radius);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  padding: var(--spacing-lg);
}

.card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.card__body {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   8. Forms (.form-group, .form-label, .form-control, .form-error)
   -------------------------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid #CCCCCC;
  border-radius: var(--border-radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232, 64, 28, 0.2);
}

.form-control--error {
  border-color: var(--color-danger);
}

.form-control--error:focus {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.2);
}

.form-error {
  font-size: 0.85rem;
  color: var(--color-danger);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: var(--spacing-2xl);
}

/* --------------------------------------------------------------------------
   9. Booking Calendar (.calendar)
   -------------------------------------------------------------------------- */
.calendar {
  width: 100%;
}

.calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  margin-bottom: var(--spacing-sm);
}

.calendar__title {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
}

.calendar__nav-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
  transition: color var(--transition), background-color var(--transition);
  display: flex;
  align-items: center;
}

.calendar__nav-btn:hover,
.calendar__nav-btn:focus {
  color: var(--color-primary);
  background-color: rgba(232, 64, 28, 0.08);
}

/* Mobile default: vertical list */
.calendar--list .calendar__grid {
  display: flex;
  flex-direction: column;
}

.calendar__day {
  padding: var(--spacing-md);
  border-bottom: 1px solid #E0E0E0;
  cursor: pointer;
  position: relative;
  transition: background-color var(--transition);
}

.calendar__day:hover {
  background-color: rgba(232, 64, 28, 0.04);
}

.calendar__day-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
}

.calendar__day-number {
  font-size: 0.95rem;
}

/* Dot indicator for days with sessions (::before pseudo-element) */
.calendar__day--has-session .calendar__day-header::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  flex-shrink: 0;
}

/* Session detail: hidden by default, shown when expanded */
.calendar__session-detail {
  display: none;
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid #F0F0F0;
}

.calendar__day--expanded .calendar__session-detail {
  display: block;
}

.calendar__day--today .calendar__day-number {
  color: var(--color-primary);
  font-weight: 700;
}

.calendar__day--other-month {
  opacity: 0.4;
}

/* Session badges */
.session-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 2px var(--spacing-sm);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.session-badge--available {
  background-color: rgba(46, 125, 50, 0.12);
  color: var(--color-success);
}

.session-badge--low {
  background-color: rgba(245, 124, 0, 0.12);
  color: var(--color-warning);
}

.session-badge--full {
  background-color: rgba(198, 40, 40, 0.12);
  color: var(--color-danger);
}

/* Desktop: 7-column grid */
@media (min-width: 1024px) {
  .calendar--grid .calendar__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid #E0E0E0;
    margin-bottom: var(--spacing-xs);
  }

  .calendar--grid .calendar__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background-color: #E0E0E0;
    border: 1px solid #E0E0E0;
    border-radius: var(--border-radius);
    overflow: hidden;
  }

  .calendar--grid .calendar__day {
    min-height: 100px;
    background-color: var(--color-surface);
    border-bottom: none;
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .calendar--grid .calendar__session-detail {
    display: block;
    border-top: none;
    padding-top: 0;
    margin-top: 0;
  }
}

/* --------------------------------------------------------------------------
   10. Status Badges (.badge)
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--spacing-sm);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}

.badge--pending {
  background-color: rgba(245, 124, 0, 0.12);
  color: var(--color-warning);
}

.badge--approved {
  background-color: rgba(46, 125, 50, 0.12);
  color: var(--color-success);
}

.badge--rejected {
  background-color: rgba(198, 40, 40, 0.12);
  color: var(--color-danger);
}

.badge--expired {
  background-color: rgba(102, 102, 102, 0.12);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   11. Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Tablet (min-width: 640px) */
@media (min-width: 640px) {
  .grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .nav__links a {
    font-size: 1rem;
  }
}

/* Desktop (min-width: 1024px) — additional layout rules */
@media (min-width: 1024px) {
  .grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
  }

  .grid-4col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
  }

  body {
    padding-top: 56px; /* offset for fixed nav */
  }
}

/* --------------------------------------------------------------------------
   12. Utility Classes
   -------------------------------------------------------------------------- */
.text-muted    { color: var(--color-text-muted); }
.text-success  { color: var(--color-success); }
.text-warning  { color: var(--color-warning); }
.text-danger   { color: var(--color-danger); }

.mt-md { margin-top: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer__links a:hover,
.footer__links a:focus {
  opacity: 1 !important;
  text-decoration: underline;
}