/* -----------------------------
   CSS Variables & Theming
------------------------------ */
:root {
    /* Light Theme (Default) */
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --primary: #fbbf24;
    --primary-hover: #f59e0b;
    --border: #e2e8f0;
    --danger: #ef4444;
    --danger-hover: #dc2626;

    --font-ui: system-ui, 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --transition: all 0.2s ease-in-out;
}

[data-theme="dark"] {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
}

/* -----------------------------
   Global Reset & Base Styles
------------------------------ */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-ui);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    transition: background-color var(--transition), color var(--transition);
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

a {
    color: var(--primary);
    text-decoration: none;
}

button {
    cursor: pointer;
    font-family: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* -----------------------------
   Typography & Utilities
------------------------------ */
.text-muted { color: var(--text-muted); }
.full-width { width: 100%; }
.divider {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

/* -----------------------------
   Layout
------------------------------ */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.logo h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#auth-nav-items {
    display: flex;
    gap: 0.5rem;
}

/* Views */
.view-section {
    display: none;
    animation: fadeIn 0.3s ease;
}
.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* -----------------------------
   Buttons
------------------------------ */
.btn-primary, .btn-secondary, .btn-outline, .btn-danger, .nav-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    border: none;
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary, .nav-btn.primary {
    background-color: var(--primary);
    color: white;
    transition: transform 0.2s, filter 0.2s, background-color 0.2s;
}
.btn-primary:hover, .nav-btn.primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.02);
    filter: brightness(1.1);
}

.btn-secondary {
    background-color: var(--border);
    color: var(--text-main);
}
.btn-secondary:hover {
    background-color: var(--text-muted);
    color: white;
}

.btn-outline, .nav-btn.outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}
.btn-outline:hover, .nav-btn.outline:hover {
    border-color: var(--text-main);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}
.btn-danger:hover {
    background-color: var(--danger-hover);
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-main);
    padding: 0.5rem;
    border-radius: 50%;
}
.btn-icon:hover {
    background-color: var(--border);
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    font-weight: 500;
}
.btn-link:hover {
    text-decoration: underline;
}

/* -----------------------------
   Forms & Inputs
------------------------------ */
.form-group {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: 1rem;
}
.flex-1 { flex: 1; }
.flex-2 { flex: 2; }

label {
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-main);
    font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
textarea,
select {
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-ui);
    transition: var(--transition);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.2);
}

.error-msg {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    min-height: 1.2em;
}

/* -----------------------------
   Authentication View
------------------------------ */
.auth-card {
    max-width: 400px;
    margin: 4rem auto;
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.auth-switch {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* -----------------------------
   Dashboard View
------------------------------ */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-filter-bar {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    max-width: 500px;
}

.search-input {
    flex: 1;
}

/* Recipe Grid (Masonry/Grid) */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.recipe-card {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform 0.2s, filter 0.2s, box-shadow 0.2s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.recipe-card:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
    filter: brightness(1.1);
}

.card-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: var(--border); /* Placeholder color */
}

.card-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.card-tags {
    margin-top: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.tag {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    padding: 0.1rem 0.4rem;
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.loading-spinner, .empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem auto;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 4rem 2rem;
    max-width: 600px;
}

/* -----------------------------
   Recipe Form View
------------------------------ */
.form-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.recipe-form-card {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.dynamic-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dynamic-row {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}
.dynamic-row input {
    flex: 1;
}
.dynamic-row .btn-remove {
    padding: 0.75rem;
    color: var(--danger);
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.dynamic-row .btn-remove:hover {
    background-color: var(--danger);
    color: white;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* -----------------------------
   Recipe Detail View
------------------------------ */
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.recipe-detail-card {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.recipe-hero {
    position: relative;
    border-bottom: 1px solid var(--border);
}

.recipe-hero img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
}

.recipe-hero-content {
    padding: 2rem;
}

.recipe-hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.recipe-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.recipe-meta-bar {
    display: flex;
    background-color: var(--bg-main);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    gap: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}

.meta-value {
    font-size: 1.1rem;
    font-weight: 500;
}

.meta-value.badge {
    background-color: var(--border);
    padding: 0.1rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

.recipe-content-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    padding: 2rem;
}

/* Interactive Checklist */
.checklist {
    list-style: none;
}

.checklist li {
    margin-bottom: 0.5rem;
}

.checklist label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 400;
    cursor: pointer;
    font-size: 1rem;
}

.checklist input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
    accent-color: var(--primary);
}
.checklist input[type="checkbox"]:checked + span {
    text-decoration: line-through;
    color: var(--text-muted);
}

/* Step-by-step list */
.step-list {
    padding-left: 1.5rem;
}
.step-list li {
    margin-bottom: 1rem;
    padding-left: 0.5rem;
}
.step-list li::marker {
    font-weight: 600;
    color: var(--primary);
}

/* -----------------------------
   Responsive Design (Mobile First adjustments)
------------------------------ */
@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        align-items: stretch;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .recipe-content-grid {
        grid-template-columns: 1fr;
    }

    .recipe-meta-bar {
        gap: 1rem;
        justify-content: space-between;
    }

    .recipe-hero-content h1 {
        font-size: 2rem;
    }
}