/* ============================================
   TUALI - Arca Continental
   Sistema de Diseño Premium & Corporativo
   Rediseño UI/UX de Alta Fidelidad
   ============================================ */

:root {
  /* Paleta Premium Corporativa */
  --primary-red: #D4112E;
  --primary-dark-red: #A60D24;
  --primary-light-red: #FF4D6A;
  --accent-red-subtle: rgba(212,17,46,0.08);

  --secondary-dark: #0F172A;
  --secondary-gray: #334155;
  --secondary-light-gray: #94A3B8;

  /* Fondos premium */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-card: #FFFFFF;
  --bg-elevated: rgba(255,255,255,0.85);

  /* Acentos */
  --accent-green: #10B981;
  --accent-green-subtle: rgba(16,185,129,0.1);
  --accent-orange: #F59E0B;
  --accent-orange-subtle: rgba(245,158,11,0.1);
  --accent-blue: #3B82F6;
  --accent-blue-subtle: rgba(59,130,246,0.1);

  /* Texto - escala jerárquica */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #94A3B8;
  --text-white: #FFFFFF;
  --text-muted: #CBD5E1;

  /* Bordes premium */
  --border-color: rgba(0,0,0,0.06);
  --border-subtle: rgba(0,0,0,0.04);
  --border-focus: var(--primary-red);

  /* Radios */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 50%;

  /* Sombras - realistas y difusas */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
  --shadow-elevated: 0 8px 40px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);

  /* Tipografía */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-md: 14px;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 28px;
  --font-size-4xl: 34px;

  /* Espaciado */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-base: 16px;
  --spacing-lg: 20px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 40px;
  --spacing-4xl: 48px;

  /* Layout */
  --nav-height: 64px;
  --header-height: 60px;
  --status-bar-height: 44px;

  /* Transiciones */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

/* ===== APP CONTAINER ===== */
.app-container {
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
  background-color: var(--bg-secondary);
  position: relative;
  overflow-x: hidden;
}

/* ===== STATUS BAR ===== */
.status-bar {
  height: var(--status-bar-height);
  background: linear-gradient(135deg, var(--primary-red), var(--primary-dark-red));
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-base);
  color: var(--text-white);
  font-size: var(--font-size-xs);
  font-weight: 600;
}
.status-bar-icons { display: flex; gap: var(--spacing-sm); align-items: center; opacity: 0.9; }

/* ===== HEADER ===== */
.app-header {
  height: var(--header-height);
  background: linear-gradient(135deg, var(--primary-red), var(--primary-dark-red));
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(212,17,46,0.15);
}
.app-header-title { color: var(--text-white); font-size: var(--font-size-xl); font-weight: 700; letter-spacing: -0.3px; }
.app-header-actions { display: flex; gap: var(--spacing-md); align-items: center; }

.header-icon-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-white); font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
}
.header-icon-btn:hover { background: rgba(255,255,255,0.2); transform: scale(1.05); }
.header-icon-btn:active { background: rgba(255,255,255,0.25); transform: scale(0.95); }

/* ===== MAIN CONTENT ===== */
.main-content {
  padding-bottom: calc(var(--nav-height) + 24px);
  min-height: calc(100vh - var(--header-height) - var(--status-bar-height));
}
.page-content { padding: var(--spacing-lg); }

/* ===== CARDS (Glassmorphism sutil) ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--spacing-base);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-title { font-size: var(--font-size-base); font-weight: 700; color: var(--text-primary); margin-bottom: var(--spacing-md); letter-spacing: -0.2px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md); font-weight: 600;
  border: none; cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  letter-spacing: -0.1px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary-red), var(--primary-dark-red));
  color: var(--text-white);
  box-shadow: 0 2px 8px rgba(212,17,46,0.25);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(212,17,46,0.35); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0) scale(0.98); box-shadow: 0 1px 4px rgba(212,17,46,0.2); }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-secondary); border-color: rgba(0,0,0,0.1); }
.btn-outline { background: transparent; color: var(--primary-red); border: 1.5px solid var(--primary-red); }
.btn-outline:hover { background: var(--accent-red-subtle); }
.btn-full { width: 100%; }
.btn-lg { padding: 14px var(--spacing-2xl); font-size: var(--font-size-base); border-radius: var(--radius-xl); }

/* ===== BOTTOM NAVIGATION ===== */
.bottom-nav {
  position: fixed; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 430px; height: var(--nav-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: space-around;
  padding: 0 var(--spacing-sm); z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.04);
}
.nav-item {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md); cursor: pointer;
  transition: all var(--transition-fast); text-decoration: none; min-width: 56px;
}
.nav-item:hover { background: var(--bg-tertiary); }
.nav-item-icon { font-size: 21px; color: var(--text-tertiary); transition: all var(--transition-fast); }
.nav-item-label { font-size: var(--font-size-xs); color: var(--text-tertiary); font-weight: 500; transition: all var(--transition-fast); }
.nav-item.active .nav-item-icon { color: var(--primary-red); }
.nav-item.active .nav-item-label { color: var(--primary-red); font-weight: 700; }

/* ===== BADGES ===== */
.badge { display: inline-flex; align-items: center; justify-content: center; padding: 3px 10px; border-radius: 20px; font-size: var(--font-size-xs); font-weight: 600; letter-spacing: 0.2px; }
.badge-red { background: var(--accent-red-subtle); color: var(--primary-red); }
.badge-green { background: var(--accent-green-subtle); color: var(--accent-green); }
.badge-orange { background: var(--accent-orange-subtle); color: var(--accent-orange); }

/* ===== CHIPS ===== */
.chip {
  display: inline-flex; align-items: center; gap: var(--spacing-xs);
  padding: 6px 14px; border-radius: 20px;
  font-size: var(--font-size-sm); font-weight: 500;
  background: var(--bg-primary); color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer; white-space: nowrap;
  transition: all var(--transition-fast);
}
.chip:hover { border-color: var(--primary-red); color: var(--primary-red); }
.chip.active { background: var(--primary-red); color: var(--text-white); border-color: var(--primary-red); box-shadow: 0 2px 8px rgba(212,17,46,0.25); }

/* ===== PRODUCT CARDS ===== */
.product-card {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: var(--spacing-base); border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  display: flex; flex-direction: column; align-items: center; text-align: center;
  transition: all var(--transition-base); position: relative;
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-card:active { transform: translateY(0) scale(0.98); }
.product-card-img { font-size: 42px; margin: var(--spacing-md) 0; }
.product-card-name { font-size: var(--font-size-sm); font-weight: 600; line-height: 1.4; color: var(--text-primary); }
.product-card-price { font-size: var(--font-size-md); font-weight: 700; color: var(--primary-red); margin-top: 4px; }
.product-card-unit { font-size: var(--font-size-xs); color: var(--text-tertiary); margin-top: 2px; }
.product-promo-badge { position: absolute; top: 10px; right: 10px; background: var(--primary-red); color: white; font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 6px; box-shadow: 0 2px 6px rgba(212,17,46,0.3); }

/* ===== QTY CONTROL ===== */
.qty-control { display: flex; align-items: center; gap: var(--spacing-sm); margin-top: var(--spacing-md); }
.qty-btn {
  width: 30px; height: 30px; border-radius: var(--radius-full);
  border: 1.5px solid var(--primary-red); background: transparent;
  color: var(--primary-red); font-size: var(--font-size-base); font-weight: 700;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: all var(--transition-fast);
}
.qty-btn:hover { background: var(--accent-red-subtle); }
.qty-btn:active { background: var(--primary-red); color: white; }
.qty-value { font-size: var(--font-size-md); font-weight: 700; min-width: 22px; text-align: center; }

/* ===== SEARCH BAR ===== */
.search-bar {
  display: flex; align-items: center; gap: var(--spacing-sm);
  background: var(--bg-primary); border-radius: var(--radius-2xl);
  padding: var(--spacing-md) var(--spacing-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-fast);
}
.search-bar:focus-within { border-color: var(--primary-red); box-shadow: 0 0 0 3px rgba(212,17,46,0.08); }
.search-bar input { flex: 1; border: none; outline: none; font-size: var(--font-size-md); background: transparent; color: var(--text-primary); }
.search-bar input::placeholder { color: var(--text-muted); }
.search-bar-icon { color: var(--text-tertiary); font-size: var(--font-size-lg); }

/* ===== SECTION HEADERS ===== */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--spacing-md); }
.section-title { font-size: var(--font-size-lg); font-weight: 700; color: var(--text-primary); letter-spacing: -0.3px; }
.section-link { font-size: var(--font-size-sm); color: var(--primary-red); font-weight: 600; text-decoration: none; cursor: pointer; transition: opacity var(--transition-fast); }
.section-link:hover { opacity: 0.7; }

/* ===== PROMO BANNER ===== */
.promo-banner {
  background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-dark-red) 100%);
  border-radius: var(--radius-xl); padding: var(--spacing-xl);
  color: var(--text-white); position: relative; overflow: hidden; margin-bottom: var(--spacing-lg);
  box-shadow: 0 4px 24px rgba(212,17,46,0.2);
}
.promo-banner::before { content: ''; position: absolute; top: -40%; right: -15%; width: 180px; height: 180px; background: rgba(255,255,255,0.06); border-radius: 50%; }
.promo-banner::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 120px; height: 120px; background: rgba(255,255,255,0.04); border-radius: 50%; }
.promo-banner-title { font-size: var(--font-size-lg); font-weight: 700; margin-bottom: var(--spacing-xs); position: relative; z-index: 1; }
.promo-banner-text { font-size: var(--font-size-sm); opacity: 0.9; margin-bottom: var(--spacing-md); position: relative; z-index: 1; line-height: 1.5; }

/* ===== PROGRESS BAR ===== */
.progress-bar { height: 6px; background: var(--bg-tertiary); border-radius: 3px; overflow: hidden; }
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary-red), var(--primary-light-red)); border-radius: 3px; transition: width 0.5s ease; }

/* ===== AVATAR ===== */
.avatar {
  width: 48px; height: 48px; border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-red), var(--primary-dark-red));
  color: white; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: var(--font-size-lg);
  box-shadow: 0 2px 8px rgba(212,17,46,0.2);
}
.avatar-lg { width: 64px; height: 64px; font-size: var(--font-size-2xl); }

/* ===== INPUTS ===== */
.input-group { margin-bottom: var(--spacing-lg); }
.input-label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.input-field {
  width: 100%; padding: 13px var(--spacing-base);
  border: 1.5px solid var(--border-color); border-radius: var(--radius-md);
  font-size: var(--font-size-md); color: var(--text-primary);
  background: var(--bg-primary); outline: none;
  transition: all var(--transition-fast);
}
.input-field:focus { border-color: var(--primary-red); box-shadow: 0 0 0 3px rgba(212,17,46,0.08); }

/* ===== TOAST ===== */
.toast {
  position: fixed; top: 80px; left: 50%; transform: translateX(-50%) translateY(-10px);
  background: var(--secondary-dark); color: var(--text-white);
  padding: var(--spacing-md) var(--spacing-xl); border-radius: var(--radius-xl);
  font-size: var(--font-size-sm); font-weight: 500;
  box-shadow: var(--shadow-xl); backdrop-filter: blur(10px);
  z-index: 9999; opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== PAGES ===== */
@keyframes pageIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.page { display: none; }
.page.active { display: block; animation: pageIn 0.3s ease; }

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-red { color: var(--primary-red); }
.text-green { color: var(--accent-green); }
.text-muted { color: var(--text-tertiary); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }

::-webkit-scrollbar { width: 0; height: 0; }



/* ===== PRODUCT CARDS - PREMIUM REAL IMAGES ===== */
.products-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 14px; }

.product-card {
  background: #FFFFFF;
  border-radius: 12px;
  padding: 14px;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  display: flex; flex-direction: column; align-items: center; text-align: center;
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1), box-shadow 0.25s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.product-card:active { transform: translateY(-1px) scale(0.98); }

.product-card-img-container {
  width: 100%;
  height: 90px;
  background: #F8F9FA;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  overflow: hidden;
}
.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
}
.product-card-emoji {
  font-size: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-card-name { font-size: 13px; font-weight: 600; line-height: 1.4; color: #0F172A; margin-bottom: 4px; }
.product-card-unit { font-size: 11px; color: #94A3B8; margin-bottom: 6px; }
.product-card-price { font-size: 15px; font-weight: 700; color: #D4112E; }
.product-promo-badge {
  position: absolute; top: 8px; right: 8px;
  background: #D4112E; color: white;
  font-size: 10px; font-weight: 700;
  padding: 3px 8px; border-radius: 6px;
  box-shadow: 0 2px 6px rgba(212,17,46,0.3);
}

/* Cart badges */
.cart-badge { position: absolute; top: -4px; right: -4px; width: 18px; height: 18px; background: #F59E0B; color: white; font-size: 10px; font-weight: 700; border-radius: 50%; display: flex; align-items: center; justify-content: center; }

/* Filter chips */
.filter-chips { display: flex; gap: 8px; overflow-x: auto; padding: 12px 0; -webkit-overflow-scrolling: touch; }
.filter-chips::-webkit-scrollbar { display: none; }