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

:root {
    --bg-body: #fafafa;
    --bg-surface: #ffffff;
    --text-primary: #171717;
    --text-secondary: #737373;
    --border-light: #eaeaea;
    --accent-color: #000000;
    --accent-hover: #333333;
    --error-color: #ef4444;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --focus-ring: 0 0 0 3px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Inter', system-ui, sans-serif; -webkit-font-smoothing: antialiased; }

body { background-color: var(--bg-body); color: var(--text-primary); line-height: 1.6; }

/* Navigation */
#main-nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; background-color: var(--bg-surface); border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; flex-wrap: wrap; gap: 1rem; }
.nav-brand { font-weight: 600; font-size: 1.25rem; letter-spacing: -0.025em; }
.nav-links { display: flex; list-style: none; gap: 0.5rem; flex-wrap: wrap; }
.nav-btn { background: none; border: none; padding: 0.5rem 1rem; font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); cursor: pointer; border-radius: var(--radius-sm); transition: var(--transition); }
.nav-btn:hover { color: var(--text-primary); background-color: #f5f5f5; }
.nav-btn.active { color: var(--text-primary); background-color: #f5f5f5; font-weight: 600; }
.nav-auth { display: flex; align-items: center; gap: 1rem; }
.user-email { font-size: 0.875rem; color: var(--text-secondary); }

/* Core Layout Layouts */
#app-container { max-width: 1400px; margin: 2rem auto; padding: 0 1.5rem; }
.view-container { animation: fadeIn 0.2s ease-out; }
.view-container.hidden, #main-nav.hidden { display: none !important; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* Base Components Buttons & Forms */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; border: none; padding: 0.75rem 1.25rem; font-size: 0.95rem; font-weight: 500; border-radius: var(--radius-sm); cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-primary { background-color: var(--accent-color); color: white; }
.btn-primary:hover { background-color: var(--accent-hover); }
.btn-secondary { background-color: #f5f5f5; color: var(--text-primary); border: 1px solid var(--border-light); }
.btn-secondary:hover { background-color: #eaeaea; }
.btn-google { background-color: #ffffff; color: #3c4043; border: 1px solid #dadce0; gap: 0.5rem; width: 100%; font-weight: 500; }
.btn-google:hover { background-color: #f8f9fa; border-color: #d2e3fc; }
.text-danger { color: var(--error-color) !important; }

/* Form Accessibility Improvements */
.form-input { padding: 0.625rem 0.875rem; font-size: 0.95rem; border: 1px solid var(--border-light); border-radius: var(--radius-sm); background-color: var(--bg-surface); outline: none; transition: var(--transition); color: var(--text-primary); }
.form-input:focus { border-color: var(--accent-color); box-shadow: var(--focus-ring); }
.input-group { display: flex; flex-direction: column; gap: 0.375rem; margin-bottom: 1.25rem; }
.input-group label { font-size: 0.875rem; font-weight: 500; color: var(--text-primary); }
.input-group textarea { resize: vertical; padding: 0.625rem 0.875rem; font-size: 0.95rem; border: 1px solid var(--border-light); border-radius: var(--radius-sm); outline: none; transition: var(--transition); }
.input-group textarea:focus { border-color: var(--accent-color); box-shadow: var(--focus-ring); }

/* Header Formatting Panels */
.view-header { margin-bottom: 2rem; border-bottom: 1px solid var(--border-light); padding-bottom: 1.5rem; }
.header-main { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.header-main h2 { font-size: 1.75rem; font-weight: 600; letter-spacing: -0.03em; }

/* Recipe Matrix Layout Grid */
.grid-layout { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.recipe-card { position: relative; background-color: var(--bg-surface); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 1.5rem; cursor: pointer; transition: var(--transition); box-shadow: var(--shadow-sm); }
.recipe-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: #ccc; }
.recipe-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.5rem; line-height: 1.3; padding-right: 3rem; }
.recipe-meta { font-size: 0.825rem; color: var(--text-secondary); margin-bottom: 1rem; }
.recipe-group-tag { position: absolute; top: 12px; right: 12px; font-size: 0.65rem; background: #f0f0f0; padding: 2px 6px; border-radius: 4px; text-transform: uppercase; font-weight: 600; color: var(--text-secondary); }

.macro-badges { display: flex; gap: 0.375rem; flex-wrap: wrap; }
.badge { display: inline-flex; padding: 0.25rem 0.625rem; font-size: 0.775rem; font-weight: 500; border-radius: 20px; background-color: #f5f5f5; color: var(--text-primary); border: 1px solid var(--border-light); }
.badge.cal { background-color: #fafafa; border-color: var(--border-light); font-weight: 600; }
.badge.pro { background-color: #f0fdf4; border-color: #bbf7d0; color: #166534; }

/* HIGH FOCUS PLANNER BOARD UPGRADE */
.focused-calendar-board { display: grid; grid-template-columns: repeat(7, minmax(150px, 1fr)); gap: 0.75rem; width: 100%; margin-top: 1rem; }

@media (max-width: 1024px) {
    .focused-calendar-board { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 1rem; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .focused-calendar-board::-webkit-scrollbar { display: none; }
    .dashboard-day-column { min-width: 85vw; scroll-snap-align: center; flex-shrink: 0; }
}

.dashboard-day-column { background: var(--bg-surface); border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); }
.day-column-header { background: #fafafa; border-bottom: 1px solid var(--border-light); padding: 0.75rem; display: flex; flex-direction: column; align-items: center; position: relative; }
.day-title-text { font-weight: 600; font-size: 0.95rem; color: var(--text-primary); }
.day-date-subtext { font-size: 1.25rem; font-weight: 300; margin: 0.15rem 0; color: #555; }
.day-calorie-pill { background: #000; color: #fff; font-size: 0.65rem; padding: 2px 6px; border-radius: 10px; font-weight: 500; }

.day-column-slots-container { padding: 0.5rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.dashboard-slot-cell { border-radius: var(--radius-sm); border: 1px solid #f0f0f0; padding: 0.5rem; display: flex; flex-direction: column; min-height: 85px; background: #fdfdfd; transition: var(--transition); }
.dashboard-slot-cell:hover { border-color: #bebebe; background: #fff; }

.slot-breakfast { border-left: 3px solid #f59e0b; }
.slot-lunch { border-left: 3px solid #3b82f6; }
.slot-snack { border-left: 3px solid #10b981; }
.slot-dinner { border-left: 3px solid #8b5cf6; }

.slot-cell-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.25rem; }
.slot-label { font-size: 0.65rem; text-transform: uppercase; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.05em; }
.slot-add-trigger { background: none; border: none; font-size: 1.2rem; line-height: 1; color: #9ca3af; cursor: pointer; font-weight: 600; transition: var(--transition); width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; border-radius: 4px; outline: none; }
.slot-add-trigger:hover, .slot-add-trigger:focus-visible { background: var(--bg-body); color: var(--text-primary); box-shadow: var(--focus-ring); }

.slot-cell-content { display: flex; flex-direction: column; gap: 4px; flex: 1; justify-content: center; }
.slot-empty-placeholder { font-size: 0.75rem; color: #ccc; font-style: italic; text-align: center; display: block; }

.slot-allocated-item { background: #f3f4f6; border-radius: 4px; padding: 4px 6px; display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; border: 1px solid #e5e7eb; transition: var(--transition); }
.slot-allocated-item:hover { border-color: #d1d5db; background: #e5e7eb; }
.slot-allocated-item .item-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 85%; color: var(--text-primary); }
.slot-allocated-item .remove-item-trigger { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 1rem; line-height: 1; display: inline-flex; align-items: center; font-weight: 600; transition: var(--transition); }
.slot-allocated-item .remove-item-trigger:hover { color: var(--error-color); }

/* Accordion Management Footers */
.collapsible-section { background: var(--bg-surface); border: 1px solid var(--border-light); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.section-summary { font-weight: 600; font-size: 1rem; padding: 1rem; background: #ffffff; cursor: pointer; user-select: none; border-bottom: 1px solid var(--border-light); outline: none; transition: var(--transition); }
.section-summary:hover, .section-summary:focus-visible { background: #fafafa; }
.accordion-content-grid { padding: 1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.accordion-content-grid-types { padding: 1rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }

.accordion-type-bucket { background: #fcfcfc; border: 1px solid #f0f0f0; border-radius: var(--radius-sm); padding: 0.75rem; }
.bucket-heading { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); border-bottom: 1px solid var(--border-light); padding-bottom: 4px; margin-bottom: 0.5rem; }
.bucket-recipe-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; border-bottom: 1px dashed #f0f0f0; }
.bucket-recipe-row:last-child { border-bottom: none; }
.btn-add-mini-trigger { background: #f3f4f6; border: 1px solid #e5e7eb; border-radius: 4px; width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-size: 0.8rem; font-weight: 600; transition: var(--transition); outline: none; }
.btn-add-mini-trigger:hover, .btn-add-mini-trigger:focus-visible { background: #000; color: #fff; border-color: #000; box-shadow: var(--focus-ring); }

.template-plan-row { display: flex; justify-content: space-between; align-items: center; padding: 0.5rem 0.75rem; background: #fafafa; border: 1px solid var(--border-light); border-radius: 6px; }

/* Modals Overlay Containers */
.modal { border: none; border-radius: var(--radius-lg); padding: 0; box-shadow: var(--shadow-md); margin: auto; max-width: 600px; width: calc(100% - 2rem); outline: none; box-sizing: border-box; }
.modal::backdrop { background-color: rgba(0, 0, 0, 0.4); backdrop-filter: blur(4px); }
.modal-content { padding: 2.5rem; position: relative; background-color: var(--bg-surface); border-radius: var(--radius-lg); }
.close-btn { position: absolute; top: 1.25rem; right: 1.25rem; background: none; border: none; font-size: 1.75rem; color: var(--text-secondary); cursor: pointer; transition: var(--transition); line-height: 1; outline: none; border-radius: 4px; }
.close-btn:hover, .close-btn:focus-visible { color: var(--text-primary); box-shadow: var(--focus-ring); }

/* Authentication Design Element Layout */
.auth-card { max-width: 420px; margin: 4rem auto; background-color: var(--bg-surface); padding: 2.5rem; border-radius: var(--radius-lg); border: 1px solid var(--border-light); box-shadow: var(--shadow-md); }
.auth-card h2 { font-size: 1.75rem; font-weight: 600; margin-bottom: 1.5rem; letter-spacing: -0.03em; text-align: center; }
.auth-actions { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1.5rem; }
.auth-actions .btn { width: 100%; }
.divider { display: flex; align-items: center; text-align: center; margin: 1.5rem 0; color: var(--text-secondary); font-size: 0.825rem; }
.divider::before, .divider::after { content: ''; flex: 1; border-bottom: 1px solid var(--border-light); }
.divider:not(:empty)::before { margin-right: .75rem; }
.divider:not(:empty)::after { margin-left: .75rem; }
.error-msg { color: var(--error-color); font-size: 0.875rem; margin-top: 1rem; text-align: center; }

/* Cooking Progress Bar & Timeline Mode */
.cooking-container { background: var(--bg-surface); border: 1px solid var(--border-light); border-radius: var(--radius-lg); padding: 3rem; text-align: center; box-shadow: var(--shadow-sm); max-width: 800px; margin: 2rem auto; }
.progress-bar-container { background-color: #f5f5f5; height: 6px; border-radius: 3px; overflow: hidden; margin-bottom: 2.5rem; }
.progress-bar { background-color: var(--accent-color); height: 100%; width: 0%; transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
.step-counter { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); margin-bottom: 0.75rem; font-weight: 600; }
.cooking-instruction { font-size: 1.5rem; font-weight: 500; min-height: 120px; display: flex; align-items: center; justify-content: center; margin-bottom: 2.5rem; color: var(--text-primary); letter-spacing: -0.02em; line-height: 1.4; }
.cooking-controls { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.cooking-controls .btn { padding: 1rem 3rem; font-size: 1rem; border-radius: 30px; }

/* Grocery List Container Overhaul */
.grocery-section { background: var(--bg-surface); border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 1.5rem; }
.grocery-item-container { display: flex; align-items: flex-start; justify-content: space-between; padding: 1rem 0; border-bottom: 1px solid var(--border-light); transition: var(--transition); gap: 1rem; }
.grocery-item-container:last-child { border-bottom: none; }
.grocery-item-left { display: flex; align-items: flex-start; gap: 0.75rem; flex: 1; }
.grocery-checkbox { width: 1.25rem; height: 1.25rem; accent-color: var(--accent-color); cursor: pointer; margin-top: 0.15rem; flex-shrink: 0; outline: none; }
.grocery-checkbox:focus-visible { outline: 2px solid var(--accent-color); outline-offset: 2px; }
.grocery-text-block { display: flex; flex-direction: column; }
.grocery-item-title { font-weight: 500; font-size: 0.95rem; color: var(--text-primary); line-height: 1.4; }
.grocery-item-title.checked { text-decoration: line-through; color: var(--text-secondary); }
.grocery-item-sub { font-size: 0.75rem; color: var(--text-secondary); margin-top: 0.25rem; }
.btn-icon { background: none; border: none; display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-secondary); font-size: 1.25rem; transition: var(--transition); border-radius: 4px; padding: 4px; outline: none; }
.btn-icon:hover, .btn-icon:focus-visible { color: var(--error-color); background: #fee2e2; }

/* Global helper classes & UI Elements */
.text-light { color: var(--text-secondary); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-center { text-align: center; }
.hidden { display: none !important; }

.empty-state-card { background-color: rgba(255, 255, 255, 0.02); transition: var(--transition); }
.empty-state-card:hover { background-color: rgba(0, 0, 0, 0.01); border-color: #ccc; }