/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    /* Color Palette - Sustainable Tech */
    --primary: #10b981; /* Emerald 500 */
    --primary-hover: #059669;
    --secondary: #3b82f6; /* Blue 500 */
    --accent: #f59e0b; /* Amber 500 */
    --danger: #ef4444; /* Red 500 */
    
    --bg-dark: #0f172a; /* Slate 900 */
    --bg-card: rgba(30, 41, 59, 0.7); /* Slate 800 with opacity */
    --text-main: #f8fafc; /* Slate 50 */
    --text-muted: #94a3b8; /* Slate 400 */
    
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --radius: 16px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Layout */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 30px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    animation: fadeInDown 0.8s ease-out;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--text-main);
}

nav ul {
    display: flex;
    gap: 20px;
    list-style: none;
}

nav button {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    padding: 8px 16px;
    border-radius: 20px;
}

nav button:hover, nav button.active {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.1);
}

/* Main Content Grid */
main {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
    animation: fadeInUp 0.8s ease-out;
}

/* Glassmorphism Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Specific Sections */
.stats-container {
    grid-column: span 12;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 10px 0;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.action-section {
    grid-column: span 4;
}

.list-section {
    grid-column: span 8;
}

@media (max-width: 768px) {
    .action-section, .list-section {
        grid-column: span 12;
    }
}

/* Forms */
.input-group {
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input, select {
    width: 100%;
    padding: 12px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    transition: var(--transition);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

button.primary-btn {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

button.primary-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.02);
}

/* Inventory List */
.inventory-list {
    list-style: none;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 10px;
}

.inventory-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    margin-bottom: 12px;
    transition: var(--transition);
    border-left: 3px solid var(--primary);
}

.inventory-item.expiring {
    border-left-color: var(--danger);
}

.inventory-item.warning {
    border-left-color: var(--accent);
}

.inventory-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.item-info h4 {
    margin-bottom: 4px;
}

.item-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.expiry-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.expiry-badge.safe { background: rgba(16, 185, 129, 0.2); color: var(--primary); }
.expiry-badge.soon { background: rgba(245, 158, 11, 0.2); color: var(--accent); }
.expiry-badge.expired { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

/* Recipes */
.recipes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.recipe-card {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.recipe-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.recipe-content {
    padding: 16px;
}

.recipe-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.recipe-ingredients {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Utility */
.hidden { display: none; }
.text-center { text-align: center; }
.mb-4 { margin-bottom: 16px; }

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Loading Spinner */
.loader {
    width: 20px;
    height: 20px;
    border: 3px solid #FFF;
    border-bottom-color: transparent;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    }

@keyframes rotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}