/* ============================================
   Hogar - Household Management App
   Mobile-first responsive design
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #E07A5F;
  --color-primary-hover: #c9694f;
  --color-primary-light: #f4d5cb;
  --color-secondary: #81B29A;
  --color-secondary-hover: #6a9b83;
  --color-secondary-light: #d4e9df;

  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #2D3436;
  --color-text-secondary: #636E72;
  --color-text-muted: #B2BEC3;
  --color-border: #E9ECEF;

  --color-success: #81B29A;
  --color-error: #E07A5F;
  --color-warning: #F2CC8F;

  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --nav-height: 56px;
  --touch-min: 48px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.5;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  height: var(--nav-height);
}

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

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

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--touch-min);
  height: var(--touch-min);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: background 0.2s;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.2s;
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

.nav-toggle.active .hamburger {
  background: transparent;
}

.nav-toggle.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-links {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) 0;
}

.nav-links.open {
  display: block;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-6);
  min-height: var(--touch-min);
  color: var(--color-text);
  font-weight: 500;
  transition: background 0.15s;
}

.nav-link:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

/* --- Container --- */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-4);
  padding-bottom: var(--space-12);
}

/* --- Typography --- */
.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

/* --- Card --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  -webkit-user-select: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

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

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

.btn-danger {
  background: var(--color-error);
  color: white;
}

.btn-danger:hover {
  background: #c9694f;
}

.btn-full {
  width: 100%;
}

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-secondary-light);
  color: var(--color-secondary-hover);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-sm {
  padding: 2px var(--space-2);
  font-size: 0.7rem;
}

/* --- Forms --- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select {
  width: 100%;
  min-height: var(--touch-min);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23636E72' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

/* --- Alert --- */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-5);
}

.alert-error {
  background: #fde8e3;
  color: #b5473a;
  border: 1px solid #f4c4ba;
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text);
  color: white;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  transition: transform 0.3s ease;
  pointer-events: none;
}

.toast.visible {
  transform: translateX(-50%) translateY(0);
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
}

.empty-state-text {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state-hint {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: var(--space-4);
  background: var(--color-bg);
}

.login-container {
  width: 100%;
  max-width: 400px;
}

.login-card {
  padding: var(--space-8);
}

.login-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--space-1);
}

.login-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.login-form .btn {
  margin-top: var(--space-4);
}

/* ============================================
   DASHBOARD - Weekly Menu
   ============================================ */
.week-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.day-card {
  padding: var(--space-4);
}

.day-card-header {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-primary-light);
  margin-bottom: var(--space-3);
}

.meal {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
}

.meal + .meal {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  margin-top: var(--space-2);
}

.meal-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  min-width: 52px;
  padding-top: 2px;
}

.meal-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.meal-name {
  font-weight: 500;
}

.meal-link {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-light);
  text-underline-offset: 2px;
}

.meal-link:hover {
  color: var(--color-primary);
  text-decoration-color: var(--color-primary);
}

/* ============================================
   MENUS PAGE
   ============================================ */
.menus-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.menu-card {
  cursor: pointer;
  transition: box-shadow 0.15s;
}

.menu-card:hover {
  box-shadow: var(--shadow-lg);
}

.menu-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  min-height: var(--touch-min);
}

.menu-card-title {
  font-size: 1rem;
  font-weight: 600;
}

.menu-card-chevron {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--color-text-muted);
  border-bottom: 2px solid var(--color-text-muted);
  transform: rotate(45deg);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.menu-card.expanded .menu-card-chevron {
  transform: rotate(-135deg);
}

.menu-card-body {
  padding: 0 var(--space-5) var(--space-5);
  border-top: 1px solid var(--color-border);
}

.menu-card-body[hidden] {
  display: none;
}

.menu-day-row {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.menu-day-row:last-child {
  border-bottom: none;
}

.menu-day-name {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-1);
}

.menu-day-meals {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.menu-day-meal {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.meal-label-sm {
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 50px;
}

/* ============================================
   SHOPPING PAGE - The Most Important Page
   ============================================ */
.shopping-page .page-title {
  margin-bottom: var(--space-3);
}

.shopping-header {
  margin-bottom: var(--space-4);
}

.list-selector {
  margin-top: var(--space-3);
}

/* Progress Bar */
.progress-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding: var(--space-3) 0;
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  width: 0%;
}

.progress-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
  min-width: 48px;
  text-align: right;
}

/* Category Headers */
.category-group {
  margin-bottom: var(--space-2);
}

.category-header {
  position: sticky;
  top: var(--nav-height);
  z-index: 10;
  background: var(--color-bg);
  padding: var(--space-3) var(--space-2);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary-light);
}

/* Shopping Items */
.shopping-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-2);
  min-height: var(--touch-min);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
  transition: background 0.1s;
  -webkit-user-select: none;
  user-select: none;
}

.shopping-item:active {
  background: var(--color-bg);
}

.shopping-item:last-child {
  border-bottom: none;
}

.shopping-item-check {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.shopping-item-check svg {
  width: 24px;
  height: 24px;
}

.icon-check {
  fill: var(--color-secondary);
}

.icon-circle {
  color: var(--color-text-muted);
}

.shopping-item--checked .shopping-item-check {
  color: var(--color-secondary);
}

.shopping-item-name {
  flex: 1;
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.15s;
}

.shopping-item--checked .shopping-item-name {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

.shopping-item-qty {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.shopping-item--checked .shopping-item-qty {
  color: var(--color-text-muted);
}

/* ============================================
   RECIPES PAGE
   ============================================ */
.recipes-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.recipe-card {
  cursor: pointer;
  transition: box-shadow 0.15s;
}

.recipe-card:hover {
  box-shadow: var(--shadow-lg);
}

.recipe-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  min-height: var(--touch-min);
  gap: var(--space-3);
}

.recipe-card-title {
  font-size: 1rem;
  font-weight: 600;
  flex: 1;
}

.recipe-card-body {
  padding: 0 var(--space-5) var(--space-5);
  border-top: 1px solid var(--color-border);
}

.recipe-card-body[hidden] {
  display: none;
}

.recipe-section {
  margin-top: var(--space-4);
}

.recipe-section-title {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.recipe-ingredients {
  list-style: none;
}

.recipe-ingredients li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.recipe-ingredients li::before {
  content: '\2022';
  color: var(--color-primary);
  font-weight: 700;
  margin-right: var(--space-2);
}

.recipe-ingredients li:last-child {
  border-bottom: none;
}

.recipe-steps {
  list-style: none;
  counter-reset: step;
}

.recipe-steps li {
  counter-increment: step;
  padding: var(--space-3) 0;
  padding-left: var(--space-8);
  position: relative;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
}

.recipe-steps li:last-child {
  border-bottom: none;
}

.recipe-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: var(--space-3);
  width: 24px;
  height: 24px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   DESKTOP STYLES (768px+)
   ============================================ */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    position: static;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    gap: var(--space-2);
  }

  .nav-link {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    min-height: auto;
  }

  .week-menu {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .recipes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .menu-day-meals {
    flex-direction: row;
    gap: var(--space-6);
  }

  .login-card {
    box-shadow: var(--shadow-lg);
  }
}

/* ============================================
   ACCESSIBILITY & POLISH
   ============================================ */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

@supports (-webkit-touch-callout: none) {
  .shopping-item:active,
  .menu-card:active,
  .recipe-card:active {
    background: var(--color-bg);
  }
}

@supports (padding: env(safe-area-inset-bottom)) {
  .container {
    padding-bottom: calc(var(--space-12) + env(safe-area-inset-bottom));
  }

  .toast {
    bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  }
}