/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-card: #1e2a45;
  --bg-card-hover: #253553;
  --bg-input: #0f1729;
  --bg-modal: #1e2a45;
  --text-primary: #e8e8e8;
  --text-secondary: #b0b8c8;
  --text-muted: #7a8599;
  --accent: #e6a919;
  --accent-hover: #f0bd3f;
  --accent-dim: #c4912a;
  --green: #4caf50;
  --green-dim: #2e7d32;
  --red: #ef5350;
  --red-dim: #c62828;
  --blue: #42a5f5;
  --orange: #ff9800;
  --border: #2a3a5c;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ========== LOGIN SCREEN ========== */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: linear-gradient(135deg, #0f1729 0%, #1a1a2e 50%, #16213e 100%);
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 32px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.login-logo {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 8px;
}
.login-tagline {
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-form label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: left;
}
.login-form input {
  padding: 12px 16px;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  text-align: center;
}
.login-form input:focus {
  outline: none;
  border-color: var(--accent);
}
.login-form input::placeholder {
  color: var(--text-muted);
}
.login-btn {
  padding: 12px;
  font-size: 1rem;
  margin-top: 8px;
}
.login-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 20px;
  line-height: 1.5;
}

/* ========== HEADER ========== */
.app-header {
  background: linear-gradient(135deg, #0f1729 0%, #1a1a2e 50%, #16213e 100%);
  padding: 24px 20px 16px;
  text-align: center;
  border-bottom: 2px solid var(--accent);
}
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}
.tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 4px;
}
#user-display {
  color: var(--accent);
  font-weight: 600;
}
.saving-indicator {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-left: 8px;
}

/* ========== NAVIGATION ========== */
.main-nav {
  display: flex;
  gap: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.nav-btn {
  flex: 1;
  min-width: 0;
  padding: 12px 8px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}
.nav-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}
.nav-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(230,169,25,0.08);
}

/* ========== TABS ========== */
.tab-content {
  display: none;
  padding: 20px;
  max-width: 1200px;
  margin: 0 auto;
}
.tab-content.active { display: block; }

.tab-header {
  margin-bottom: 20px;
}
.tab-header h2 {
  color: var(--accent);
  font-size: 1.4rem;
  margin-bottom: 4px;
}
.tab-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

/* ========== FILTER ROW ========== */
.filter-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.filter-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}
select {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
}
select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ========== BUTTONS ========== */
.btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
}
.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent);
}
.btn-primary {
  background: var(--accent);
  color: #1a1a2e;
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover {
  background: var(--accent-hover);
}
.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}
.btn-remove {
  color: var(--red);
  border-color: var(--red-dim);
  padding: 4px 8px;
}

/* ========== DRINK GRID ========== */
.drink-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

/* ========== DRINK CARD ========== */
.drink-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: all 0.2s;
  cursor: pointer;
  position: relative;
}
.drink-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.drink-card.thumbs-down {
  opacity: 0.45;
  order: 999;
}
.drink-card.thumbs-up {
  border-left: 3px solid var(--green);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}
.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}
.card-category {
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(230,169,25,0.12);
  padding: 2px 8px;
  border-radius: 12px;
  white-space: nowrap;
}

.card-ingredients {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 10px 0;
}
.ingredient-tag {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
  background: rgba(66,165,245,0.12);
  color: var(--blue);
  border: 1px solid rgba(66,165,245,0.2);
}
.ingredient-tag.have {
  background: rgba(76,175,80,0.12);
  color: var(--green);
  border-color: rgba(76,175,80,0.25);
}
.ingredient-tag.missing {
  background: rgba(239,83,80,0.12);
  color: var(--red);
  border-color: rgba(239,83,80,0.25);
}

.card-match {
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 8px;
}
.match-perfect { color: var(--green); }
.match-close { color: var(--orange); }

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.action-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.2s;
  color: var(--text-secondary);
}
.action-btn:hover { border-color: var(--text-secondary); }
.action-btn.liked {
  color: var(--green);
  border-color: var(--green);
  background: rgba(76,175,80,0.1);
}
.action-btn.disliked {
  color: var(--red);
  border-color: var(--red);
  background: rgba(239,83,80,0.1);
}

/* ========== PANTRY ========== */
.pantry-stats {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.pantry-stats strong {
  color: var(--accent);
}

.pantry-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.pantry-category {
  margin-bottom: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.pantry-category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
  transition: background 0.2s;
  user-select: none;
}
.pantry-category-header:hover {
  background: var(--bg-card-hover);
}
.pantry-category-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}
.pantry-category-count {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.pantry-category-arrow {
  color: var(--text-muted);
  transition: transform 0.2s;
  font-size: 0.9rem;
}
.pantry-category.open .pantry-category-arrow {
  transform: rotate(180deg);
}
.pantry-items {
  display: none;
  padding: 0 16px 12px;
}
.pantry-category.open .pantry-items {
  display: block;
}
.pantry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 6px;
}
.pantry-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
  user-select: none;
}
.pantry-item:hover {
  background: var(--bg-card-hover);
}
.pantry-checkbox {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s;
  font-size: 0.7rem;
  color: transparent;
}
.pantry-item.checked .pantry-checkbox {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.pantry-item-name {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.pantry-item.checked .pantry-item-name {
  color: var(--text-primary);
}

/* ========== SEARCH ========== */
.search-bar {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.search-bar input {
  flex: 1;
  padding: 10px 16px;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}
.search-bar input:focus {
  outline: none;
  border-color: var(--accent);
}
.search-bar input::placeholder {
  color: var(--text-muted);
}

/* ========== ADD FORM ========== */
.add-form {
  max-width: 600px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.ingredient-row {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
}
.ingredient-row input { flex: 1; }
.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* ========== MODAL ========== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.7);
}
.modal-content {
  position: relative;
  background: var(--bg-modal);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5);
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}
.modal-close:hover { color: var(--text-primary); }

.modal-title {
  font-size: 1.3rem;
  color: var(--accent);
  margin-bottom: 4px;
}
.modal-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.modal-section {
  margin-bottom: 16px;
}
.modal-section h4 {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.modal-ingredients {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.modal-instructions {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}
.modal-shopping {
  background: rgba(255,152,0,0.08);
  border: 1px solid rgba(255,152,0,0.2);
  border-radius: 8px;
  padding: 12px;
}
.modal-shopping h4 {
  color: var(--orange);
}
.shopping-item {
  color: var(--orange);
  font-size: 0.85rem;
  padding: 2px 0;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ========== TOAST ========== */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 0.9rem;
  z-index: 2000;
  transition: transform 0.3s ease;
  box-shadow: var(--shadow);
}
.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ========== CUSTOM DRINK DELETE ========== */
.custom-badge {
  font-size: 0.7rem;
  background: rgba(230,169,25,0.15);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 8px;
  margin-left: 6px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .logo { font-size: 1.4rem; }
  .nav-btn { font-size: 0.75rem; padding: 10px 6px; }
  .tab-content { padding: 14px; }
  .drink-grid {
    grid-template-columns: 1fr;
  }
  .pantry-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
  .filter-row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .main-nav { gap: 0; }
  .nav-btn { font-size: 0.7rem; padding: 8px 4px; }
  .app-header { padding: 16px 12px 10px; }
  .logo { font-size: 1.2rem; }
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }