:root {
  --card-bg: rgba(255, 255, 255, 0.85);        
  --card-border: rgba(255, 255, 255, 0.6);
  --bg-overlay: rgba(244, 247, 251, 0.6); 
  --text-main: #0f172a;     
  --text-light: #64748b;    
  --primary-color: #3b82f6; 
  --primary-dark: #2563eb;
  --danger-color: #ef4444;  
  --radius-lg: 32px;
  --radius-md: 24px;
  --radius-sm: 16px;
  --shadow-soft: 0 20px 40px -10px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 30px 60px -12px rgba(0, 0, 0, 0.1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --card-bg: rgba(15, 23, 42, 0.85);
  --card-border: rgba(255, 255, 255, 0.08);
  --bg-overlay: rgba(2, 6, 23, 0.8); 
  --text-main: #f8fafc;
  --text-light: #94a3b8;
  --shadow-soft: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 30px 60px -12px rgba(0, 0, 0, 0.5);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-main); 
  margin: 0; padding: 0; min-height: 100vh;
  background-image: url('assets/grocepie-bg.jpg'); 
  background-size: cover; background-position: center; background-attachment: fixed;
  transition: color 0.3s ease; 
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

body::before {
  content: ""; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-overlay); z-index: -1;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); 
}

/* --- MAIN SIDEBAR MENU --- */
.sidebar {
  position: fixed; top: 0; left: -300px; width: 300px; height: 100vh;
  background: var(--card-bg); backdrop-filter: blur(40px); -webkit-backdrop-filter: blur(40px);
  border-right: 1px solid var(--card-border); box-shadow: var(--shadow-hover);
  z-index: 1000; padding: 30px 20px; box-sizing: border-box; transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.sidebar.open { left: 0; } 

.overlay {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
  background: rgba(15, 23, 42, 0.4); z-index: 999; backdrop-filter: blur(4px); animation: fadeIn 0.4s ease;
}

.sidebar-menu { list-style: none; padding: 0; margin: 0; }
.sidebar-menu li {
  padding: 16px 20px; margin-bottom: 8px; border-radius: var(--radius-sm);
  cursor: pointer; font-weight: 600; font-size: 16px; transition: var(--transition-smooth); color: var(--text-main);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-menu li:hover { background: rgba(59, 130, 246, 0.08); color: var(--primary-color); transform: translateX(4px); }
.sidebar-menu li.active { background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); color: white; box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4); }

/* --- HEADER & BRANDING --- */
.app-header {
  padding: 15px 30px; display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 100;
  background: var(--card-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--card-border); transition: background 0.3s ease; box-shadow: 0 4px 30px rgba(0,0,0,0.03);
}

.brand-container { display: flex; align-items: center; }
.brand-logo { display: flex; align-items: center; gap: 12px; cursor: pointer; transition: var(--transition-smooth); }
.brand-logo:hover { transform: scale(1.02); }
.brand-icon { height: 42px; width: 42px; object-fit: cover; border-radius: 50%; box-shadow: 0 4px 12px rgba(0,0,0,0.1); border: 2px solid white; }
.brand-name { font-family: 'Fredoka', sans-serif; font-weight: 700; font-size: 26px; color: var(--text-main); letter-spacing: -0.5px; }

/* --- ✨ GLOBAL FEATURE CARD ✨ --- */
.feature-card {
  background: linear-gradient(135deg, #7c3aed, var(--primary-color));
  border-radius: var(--radius-lg); 
  padding: 50px 40px; 
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.3); 
  margin-bottom: 40px;
  border: 1px solid rgba(255,255,255,0.25);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}

/* --- CONTAINERS & MAIN LAYOUT --- */
#app-container { padding: 40px 20px; max-width: 700px; margin: 0 auto; flex: 1; width: 100%; box-sizing: border-box; }

.input-section {
  padding: 35px; background: var(--card-bg); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--card-border); box-shadow: var(--shadow-soft);
  border-radius: var(--radius-lg); text-align: center; margin-bottom: 35px;
  transition: var(--transition-smooth);
}
.input-section:hover { box-shadow: var(--shadow-hover); }

/* --- PREMIUM AUTHENTICATION CARD --- */
.auth-container { display: flex; justify-content: center; align-items: center; flex: 1; padding: 20px; margin-top: 20px; }
.auth-card {
  padding: 50px 40px; background: var(--card-bg); backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--card-border); box-shadow: var(--shadow-hover); 
  border-radius: var(--radius-lg); text-align: center; max-width: 440px; width: 100%; margin: 0 auto;
}

/* --- GLOBAL INPUTS & BUTTONS --- */
input, .dropdown-input, textarea {
  width: 100%; padding: 18px 22px; border: 2px solid rgba(0,0,0,0.06); border-radius: var(--radius-sm); margin-bottom: 18px;
  background-color: rgba(255, 255, 255, 0.9); color: var(--text-main); font-size: 15px; 
  font-family: 'Inter', sans-serif; box-sizing: border-box; outline: none; transition: var(--transition-smooth);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}
[data-theme="dark"] input, [data-theme="dark"] .dropdown-input, [data-theme="dark"] textarea { 
  background-color: rgba(0, 0, 0, 0.4); border-color: rgba(255,255,255,0.08); color: white;
}
input:focus, .dropdown-input:focus, textarea:focus { 
  border-color: var(--primary-color); background-color: #fff; 
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15), inset 0 2px 4px rgba(0,0,0,0.01); transform: translateY(-2px);
}
[data-theme="dark"] input:focus, [data-theme="dark"] .dropdown-input:focus, [data-theme="dark"] textarea:focus { 
  background-color: rgba(0, 0, 0, 0.7); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
}

button:not(.icon-btn):not(.text-btn):not(.delete-btn):not(.delete-icon-btn):not(.remove-meal-btn) {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white; border: none; padding: 18px; border-radius: var(--radius-sm); font-size: 16px; font-weight: 700; font-family: 'Inter', sans-serif; letter-spacing: 0.3px;
  cursor: pointer; width: 100%; box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4); transition: var(--transition-smooth);
}
button:not(.icon-btn):not(.text-btn):not(.delete-btn):not(.delete-icon-btn):not(.remove-meal-btn):hover { 
  box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.5); transform: translateY(-3px); 
}
button:not(.icon-btn):not(.text-btn):not(.delete-btn):not(.delete-icon-btn):not(.remove-meal-btn):active { 
  transform: translateY(1px) scale(0.98); box-shadow: 0 5px 15px -5px rgba(37, 99, 235, 0.4);
}

button.secondary-btn { background: transparent; color: var(--text-main); border: 2px solid var(--card-border); box-shadow: none; font-weight: 600; }
button.secondary-btn:hover { background: rgba(0,0,0,0.04); box-shadow: none; }
[data-theme="dark"] button.secondary-btn:hover { background: rgba(255,255,255,0.05); }

/* ✨ Contrast button */
.white-btn {
  background: white !important;
  color: var(--primary-color) !important;
  box-shadow: 0 15px 30px -5px rgba(0,0,0,0.15) !important;
}
.white-btn:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 20px 40px -5px rgba(0,0,0,0.2) !important;
}
[data-theme="dark"] .white-btn {
  background: #0f172a !important;
  color: #3b82f6 !important;
  box-shadow: 0 15px 30px -5px rgba(0,0,0,0.3) !important;
}

/* --- ENHANCED PANTRY GRID --- */
#pantry-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 24px; list-style: none; padding: 10px 0 40px 0; }
.pantry-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-md); box-shadow: var(--shadow-soft); overflow: hidden; transition: var(--transition-smooth); position: relative; display: flex; flex-direction: column; }
.pantry-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.pantry-image { width: 100%; height: 180px; object-fit: cover; border-bottom: 1px solid rgba(0,0,0,0.04); }
.pantry-details { padding: 24px; display: flex; flex-direction: column; gap: 14px; flex-grow: 1; text-align: left; }
.pantry-details h3 { margin: 0; font-size: 1.3rem; font-weight: 700; color: var(--text-main); text-transform: capitalize; letter-spacing: -0.3px; }
.cat-badge { background-color: rgba(37, 99, 235, 0.1); color: var(--primary-dark); padding: 8px 14px; border-radius: 12px; font-size: 0.8rem; font-weight: 700; display: inline-block; width: max-content; }
[data-theme="dark"] .cat-badge { background-color: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.delete-btn { margin-top: auto; padding: 14px; background-color: rgba(239, 68, 68, 0.08); color: var(--danger-color); border: none; border-radius: 14px; cursor: pointer; font-weight: 700; transition: var(--transition-smooth); width: 100%; font-size: 14px; }
.delete-btn:hover { background-color: var(--danger-color); color: white; transform: translateY(-2px); }

/* --- UI: SHOPPING LIST & CALENDAR --- */
.horizontal-scroll {
  display: flex; gap: 24px; overflow-x: auto; padding-bottom: 30px; margin-bottom: 30px; 
  scroll-snap-type: x mandatory; scroll-padding-left: 20px;
}
.horizontal-scroll::-webkit-scrollbar { height: 10px; }
.horizontal-scroll::-webkit-scrollbar-track { background: rgba(0,0,0,0.04); border-radius: 10px; margin: 0 20px;}
[data-theme="dark"] .horizontal-scroll::-webkit-scrollbar-track { background: rgba(255,255,255,0.05); }
.horizontal-scroll::-webkit-scrollbar-thumb { background: rgba(37, 99, 235, 0.4); border-radius: 10px; border: 2px solid transparent; background-clip: padding-box; }
.horizontal-scroll::-webkit-scrollbar-thumb:hover { background-color: var(--primary-color); }

.store-btn {
  flex: 1; border: none; border-radius: var(--radius-sm); padding: 18px; font-weight: 700; color: white;
  display: flex; align-items: center; justify-content: center; gap: 10px; cursor: pointer;
  transition: var(--transition-smooth); font-size: 16px; letter-spacing: 0.3px;
}

.shopping-item-card {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 25px; margin-bottom: 16px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-left: 6px solid var(--primary-color); 
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
}
.shopping-item-card:hover { transform: translateX(6px); box-shadow: var(--shadow-hover); border-left-width: 8px; }

.delete-icon-btn {
  background: rgba(239, 68, 68, 0.08); color: var(--danger-color);
  border: none; border-radius: 50%; width: 42px; height: 42px;
  font-size: 16px; cursor: pointer; transition: var(--transition-smooth);
  display: flex; align-items: center; justify-content: center; font-weight: bold;
}
.delete-icon-btn:hover { background: var(--danger-color); color: white; transform: scale(1.1) rotate(90deg); }

.calendar-day-card {
  min-width: 320px; background: var(--card-bg); border: 1px solid var(--card-border);
  border-top: 6px solid var(--primary-color);
  border-radius: var(--radius-md); padding: 30px; scroll-snap-align: start;
  box-shadow: var(--shadow-soft); backdrop-filter: blur(20px);
  display: flex; flex-direction: column; gap: 16px;
}
.calendar-header {
  font-family: 'Fredoka', sans-serif; font-size: 1.5rem; color: var(--text-main);
  border-bottom: 2px solid rgba(0,0,0,0.05); padding-bottom: 20px; margin-bottom: 8px;
  display: flex; justify-content: space-between; align-items: center; letter-spacing: -0.5px;
}
[data-theme="dark"] .calendar-header { border-bottom-color: rgba(255,255,255,0.1); }
.meal-snippet {
  background: rgba(37, 99, 235, 0.04); border: 1px solid rgba(37, 99, 235, 0.1);
  padding: 20px; border-radius: var(--radius-sm); font-size: 15px; color: var(--text-main);
  transition: var(--transition-smooth); line-height: 1.6; position: relative;
}
[data-theme="dark"] .meal-snippet { background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.08); }
.remove-meal-btn {
  font-size: 13px; color: var(--danger-color); background: transparent; 
  border: 1px solid rgba(239, 68, 68, 0.3); padding: 10px 16px; border-radius: 12px; 
  cursor: pointer; font-weight: 700; margin-top: 16px; display: inline-block; transition: var(--transition-smooth);
}
.remove-meal-btn:hover { background: var(--danger-color); color: white; transform: translateY(-2px); }

.advanced-recipe-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg);
  padding: 40px; font-size: 16px; line-height: 1.8; box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth); position: relative; overflow: hidden; margin-bottom: 30px;
}
.advanced-recipe-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.advanced-recipe-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 8px;
  background: linear-gradient(90deg, #8b5cf6, var(--primary-color));
}
.recipe-meta-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 30px; padding-bottom: 25px; border-bottom: 1px solid rgba(0,0,0,0.06);
  flex-wrap: wrap; gap: 15px;
}
[data-theme="dark"] .recipe-meta-header { border-bottom-color: rgba(255,255,255,0.1); }

.recipe-day-selector {
  padding: 14px 20px; border-radius: var(--radius-sm); border: 2px solid rgba(37, 99, 235, 0.15);
  background: rgba(37, 99, 235, 0.05); color: var(--primary-dark); font-weight: 700; font-size: 15px;
  outline: none; cursor: pointer; transition: var(--transition-smooth); font-family: 'Inter', sans-serif;
}
.recipe-day-selector:focus, .recipe-day-selector:hover { border-color: var(--primary-color); background: rgba(37, 99, 235, 0.1); box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15); }

.section-divider { display: flex; align-items: center; margin: 50px 0 40px 0; }
.section-divider-line { flex-grow: 1; height: 2px; background: linear-gradient(90deg, transparent, rgba(0,0,0,0.08), transparent); }
[data-theme="dark"] .section-divider-line { background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); }
.section-divider-text { font-family: 'Fredoka', sans-serif; font-size: 26px; color: var(--text-main); margin: 0 25px; font-weight: 700; letter-spacing: -0.5px; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* --- ✨ USER PROFILE & DROPDOWN ✨ --- */
.user-profile-trigger {
  display: flex; align-items: center; gap: 12px; cursor: pointer; 
  padding: 8px 18px 8px 8px; border-radius: 40px; transition: var(--transition-smooth);
  background: var(--card-bg); border: 1px solid var(--card-border);
  box-shadow: 0 6px 15px rgba(0,0,0,0.05); backdrop-filter: blur(12px);
}
.user-profile-trigger:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.08); border-color: rgba(59, 130, 246, 0.3); }

.user-dropdown-btn {
  width: 100%; text-align: left; padding: 14px 20px; border: none; border-radius: var(--radius-sm); 
  font-size: 15px; font-weight: 600; background: transparent; color: var(--text-main); 
  cursor: pointer; transition: var(--transition-smooth); display: flex; align-items: center; gap: 12px;
  font-family: 'Inter', sans-serif; box-shadow: none;
}
.user-dropdown-btn:hover { background: rgba(59, 130, 246, 0.08); color: var(--primary-color); transform: translateX(6px); }

@media (max-width: 600px) { #user-greeting-name { display: none; } }

/* --- ✨ DASHBOARD & ANALYTICS ✨ --- */
.analytics-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); 
  gap: 20px; margin-bottom: 30px;
}
.stat-card {
  background: rgba(255, 255, 255, 0.95); padding: 25px 20px; border-radius: var(--radius-md); 
  text-align: center; border: 1px solid var(--card-border); 
  box-shadow: var(--shadow-soft); backdrop-filter: blur(20px);
  transition: var(--transition-smooth); color: var(--text-main);
}
[data-theme="dark"] .stat-card { background: rgba(15, 23, 42, 0.8); }
.stat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.stat-value { font-family: 'Fredoka', sans-serif; font-size: 38px; font-weight: 700; color: var(--primary-color); margin: 12px 0 8px 0; letter-spacing: -1px; }
.stat-label { font-size: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 700; }

/* --- ✨ SOCIAL LOGIN BUTTONS ✨ --- */
.social-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px; border-radius: var(--radius-sm); font-weight: 700; font-size: 16px; font-family: 'Inter', sans-serif;
  cursor: pointer; transition: var(--transition-smooth); border: 2px solid var(--card-border);
  box-shadow: 0 6px 15px rgba(0,0,0,0.04);
}
.social-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.08); }

.google-btn { background: rgba(255, 255, 255, 0.9); color: var(--text-main); }
[data-theme="dark"] .google-btn { background: rgba(255, 255, 255, 0.1); color: white; border-color: rgba(255,255,255,0.15); }

/* --- ✨ APP FOOTER ✨ --- */
.app-footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
  letter-spacing: 0.5px;
  width: 100%;
  box-sizing: border-box;
  margin-top: auto;
  opacity: 0.8;
  transition: opacity 0.3s;
}
.app-footer:hover { opacity: 1; }