/* ==========================================================================
   HiveDAV Styles - Modern Minimal Design System
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */

:root {
  /* Light Theme (default) */
  --color-bg: #fdfcfa;
  --color-surface: #f5f2eb;
  --color-primary: #b8860b;
  --color-primary-hover: #9a7209;
  --color-text: #1a170f;
  --color-text-muted: #5c5647;
  --color-success: #2d7a2d;
  --color-busy: #a63d3d;
  --color-border: #e0dbd1;
  --color-focus: #b8860b;

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

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, "Cascadia Code", monospace;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --line-height: 1.5;

  /* Borders & Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;

  /* Layout */
  --container-max: 1200px;
  --header-height: 60px;
}

/* Dark Theme */
[data-theme="dark"] {
  --color-bg: #1a170f;
  --color-surface: #2a2519;
  --color-primary: #eec35e;
  --color-primary-hover: #f5d47a;
  --color-text: #f5f2eb;
  --color-text-muted: #a39a85;
  --color-success: #7cb97c;
  --color-busy: #c97c7c;
  --color-border: #3d3627;
  --color-focus: #eec35e;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Auto dark mode when no explicit preference is set */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #1a170f;
    --color-surface: #2a2519;
    --color-primary: #eec35e;
    --color-primary-hover: #f5d47a;
    --color-text: #f5f2eb;
    --color-text-muted: #a39a85;
    --color-success: #7cb97c;
    --color-busy: #c97c7c;
    --color-border: #3d3627;
    --color-focus: #eec35e;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  }
}

/* --------------------------------------------------------------------------
   CSS Reset
   -------------------------------------------------------------------------- */

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

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

input, button, textarea, select {
  font: inherit;
}

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

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

/* --------------------------------------------------------------------------
   Focus States (Accessibility)
   -------------------------------------------------------------------------- */

:focus {
  outline: none;
}

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

/* --------------------------------------------------------------------------
   Skip Link (Accessibility)
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-primary);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  z-index: 1000;
  font-weight: 500;
}

.skip-link:focus {
  top: var(--space-md);
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

main {
  flex: 1;
  padding: var(--space-lg) 0;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.header__brand {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__brand:hover {
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header__link {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.header__link:hover {
  background: var(--color-border);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Theme Toggle Button
   -------------------------------------------------------------------------- */

.theme-toggle {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-border);
  border-color: var(--color-text-muted);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-moon,
:root:not([data-theme]) .theme-toggle .icon-moon {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: block;
  }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Page Header
   -------------------------------------------------------------------------- */

.page-header {
  margin-bottom: var(--space-lg);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.page-subtitle {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.curl-hint {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: inline-block;
}

.curl-hint code {
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Calendar Navigation
   -------------------------------------------------------------------------- */

.calendar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.calendar-nav__btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
}

.calendar-nav__btn:hover {
  background: var(--color-border);
  border-color: var(--color-text-muted);
}

.calendar-nav__btn--primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
}

.calendar-nav__btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.calendar-nav__center {
  flex: 1;
  text-align: center;
  font-weight: 500;
}

.calendar-nav__week {
  font-size: var(--font-size-lg);
}

.calendar-nav__dates {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Calendar Grid
   -------------------------------------------------------------------------- */

.calendar-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 calc(var(--space-md) * -1);
  padding: 0 var(--space-md);
}

.calendar {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.calendar th,
.calendar td {
  padding: var(--space-md);
  text-align: center;
  border: 1px solid var(--color-border);
}

.calendar th {
  background: var(--color-bg);
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.calendar th:first-child {
  text-align: left;
}

.calendar td:first-child {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.calendar tbody tr:hover {
  background: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Slot Indicators
   -------------------------------------------------------------------------- */

.slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.slot--free {
  background: var(--color-success);
  color: white;
  cursor: pointer;
}

.slot--free:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.slot--busy {
  background: var(--color-border);
  color: var(--color-text-muted);
}

.slot svg {
  width: 20px;
  height: 20px;
}

/* --------------------------------------------------------------------------
   List View
   -------------------------------------------------------------------------- */

.slots-list {
  list-style: none;
}

.slots-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  transition: box-shadow var(--transition-fast);
}

.slots-list__item:hover {
  box-shadow: var(--shadow-md);
}

.slots-list__time {
  font-weight: 500;
}

.slots-list__date {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.slots-list__action {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-primary);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: background-color var(--transition-fast);
  min-height: 44px;
}

.slots-list__action:hover {
  background: var(--color-primary-hover);
  color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */

.form {
  max-width: 500px;
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.1);
}

[data-theme="dark"] .form__input:focus,
[data-theme="dark"] .form__textarea:focus {
  box-shadow: 0 0 0 3px rgba(238, 195, 94, 0.1);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__submit {
  background: var(--color-primary);
  color: var(--color-bg);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-xl);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  min-height: 44px;
}

.form__submit:hover {
  background: var(--color-primary-hover);
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Honeypot field - visually hidden but accessible to bots */
.form__honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

/* --------------------------------------------------------------------------
   Booking Info Card
   -------------------------------------------------------------------------- */

.booking-info {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.booking-info__title {
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.booking-info__detail {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.booking-info__detail svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Success Message
   -------------------------------------------------------------------------- */

.success-message {
  background: var(--color-surface);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  max-width: 500px;
}

.success-message__icon {
  width: 64px;
  height: 64px;
  background: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
}

.success-message__icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.success-message__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.success-message__text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.success-message__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-primary);
  color: var(--color-bg);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 500;
  min-height: 44px;
}

.success-message__link:hover {
  background: var(--color-primary-hover);
  color: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Error Message
   -------------------------------------------------------------------------- */

.error-message {
  background: var(--color-surface);
  border: 1px solid var(--color-busy);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.error-message__title {
  color: var(--color-busy);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.error-message__text {
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
  margin-top: auto;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__text {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer__link {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.footer__link:hover {
  color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   htmx Loading States
   -------------------------------------------------------------------------- */

.htmx-request {
  opacity: 0.6;
  pointer-events: none;
}

.htmx-request .calendar-nav__btn {
  position: relative;
}

.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator {
  display: inline-block;
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */

/* Tablet and below */
@media (max-width: 1023px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .page-title {
    font-size: var(--font-size-xl);
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --header-height: 56px;
  }

  .header__brand {
    font-size: var(--font-size-lg);
  }

  .header__link {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
  }

  .header__nav {
    gap: var(--space-xs);
  }

  .calendar-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .calendar-nav__center {
    order: -1;
    margin-bottom: var(--space-sm);
  }

  .calendar-nav__buttons {
    display: flex;
    gap: var(--space-sm);
  }

  .calendar-nav__buttons > * {
    flex: 1;
  }

  .curl-hint {
    display: none;
  }

  .page-header {
    margin-bottom: var(--space-md);
  }

  .slots-list__item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .slots-list__action {
    width: 100%;
    justify-content: center;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */

@media print {
  .header,
  .footer,
  .calendar-nav,
  .theme-toggle,
  .curl-hint {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .calendar {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}