:root {
    /* Premium Dark Theme Palette */
    --bg-color: #0f172a;
    --bg-gradient: radial-gradient(circle at top right, #1e1b4b, #0f172a);

    --sidebar-bg: rgba(15, 23, 42, 0.6);
    --card-bg: rgba(30, 41, 59, 0.4);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Vibrant Accents */
    --accent-color: #8b5cf6;
    /* Violet */
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%);
    /* Violet to Fuchsia */
    --accent-hover: #7c3aed;

    --success-color: #10b981;
    --success-gradient: linear-gradient(135deg, #10b981 0%, #34d399 100%);

    --danger-color: #ef4444;
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #f87171 100%);

    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);

    --font-main: 'Outfit', sans-serif;
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    background-image: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 50;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 3.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.02em;
}

.logo i {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    list-style: none;
}

.nav-links li {
    margin-bottom: 0.75rem;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    border: 1px solid transparent;
}

.nav-links a:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-links a.active {
    background: rgba(139, 92, 246, 0.15);
    color: #d8b4fe;
    border-color: rgba(139, 92, 246, 0.2);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
}

.nav-links a.active i {
    color: #d8b4fe;
}

/* Content */
.content {
    flex: 1;
    padding: 3rem;
    overflow-y: auto;
    height: 100vh;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Cards & Glassmorphism */
.card,
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-md);
    padding: 2rem;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

input,
select,
textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
    background-color: rgba(15, 23, 42, 0.8);
}

/* Buttons */
button,
.btn {
    cursor: pointer;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-sm);
    border: none;
    font-weight: 600;
    font-family: var(--font-main);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

/* Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.gap-8 {
    gap: 2rem;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

.grid {
    display: grid;
}

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

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.w-full {
    width: 100%;
}

.mt-4 {
    margin-top: 1rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.mt-8 {
    margin-top: 2rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

/* Recipe Grid */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.recipe-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

.recipe-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px -5px rgba(0, 0, 0, 0.4);
    border-color: rgba(139, 92, 246, 0.3);
}

.recipe-image {
    height: 220px;
    background-color: #334155;
    background-size: cover;
    background-position: center;
    position: relative;
}

.recipe-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9), transparent);
}

.recipe-content {
    padding: 1.75rem;
}

/* Ingredient List */
.ingredient-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.ingredient-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.ingredient-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
}

/* Planning Board */
.planning-board {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1rem;
    margin-top: 2rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.day-column {
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    min-height: 450px;
    border: 1px solid var(--glass-border);
}

.day-header {
    text-align: center;
    padding: 0.75rem;
    font-weight: 700;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1rem;
    color: var(--accent-color);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.meal-slot {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    min-height: 120px;
    border: 1px dashed var(--glass-border);
    transition: background 0.2s ease;
}

.meal-slot:hover {
    background: rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
}

.meal-slot-header {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.draggable-recipe {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    padding: 0.75rem;
    border-radius: 0.375rem;
    margin-bottom: 0.5rem;
    cursor: grab;
    font-size: 0.85rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    line-height: 1.4;
}

.draggable-recipe:active {
    cursor: grabbing;
}

/* Shopping List */
.shopping-list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.shopping-list-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.shopping-list-item.checked {
    opacity: 0.4;
}

.shopping-list-item.checked span {
    text-decoration: line-through;
}

.checkbox-custom {
    width: 24px;
    height: 24px;
    border: 2px solid var(--accent-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}
}

to {
    opacity: 1;
    transform: translateY(0) scale(1);
}
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}