:root {
    --green-600: #3b82f6;
    --green-700: #2563eb;
    --green-50: rgba(59,130,246,0.08);
    --red-500: #ef4444;
    --red-50: rgba(239,68,68,0.08);
    --red-100: rgba(239,68,68,0.15);
    --yellow-500: #f59e0b;
    --yellow-50: rgba(245,158,11,0.08);
    --yellow-100: rgba(245,158,11,0.15);
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --surface: #ffffff;
    --surface-raised: #f9fafb;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.06);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
    overscroll-behavior: none;
}

/* -- Navbar -- */
.navbar {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: white;
    padding: 0 0.75rem;
    height: 56px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}
.navbar-left { display: flex; align-items: center; }
.navbar-right { display: flex; align-items: center; justify-content: flex-end; }
.navbar-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}
.nav-tab {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}
.nav-tab:hover { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.85); }
.nav-tab.active { background: rgba(255,255,255,0.2); color: #fff; }

/* Nav Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 0.35rem);
    right: 0;
    background: var(--surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 100;
    overflow: hidden;
}
.nav-dropdown-menu.open { display: block; }
.nav-dropdown-menu button,
.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.65rem 1rem;
    border: none;
    background: none;
    color: var(--gray-700);
    font-size: 0.85rem;
    cursor: pointer;
    text-align: left;
    text-decoration: none;
    transition: background 0.15s;
}
.nav-dropdown-menu button:hover,
.nav-dropdown-menu a:hover { background: var(--gray-100); }
.nav-dropdown-menu button i,
.nav-dropdown-menu a i { font-size: 1rem; color: var(--gray-500); width: 1.2rem; text-align: center; }

.navbar-brand {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    white-space: nowrap;
}
.btn-nav {
    background: rgba(255,255,255,0.12);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    -webkit-tap-highlight-color: transparent;
}
.btn-nav:hover { background: rgba(255,255,255,0.2); }
.btn-nav-icon { padding: 0.5rem; width: 40px; height: 40px; justify-content: center; font-size: 1.1rem; }

/* -- Install banner -- */
.install-banner {
    display: none;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: white;
    padding: 0.75rem 1rem;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    font-size: 0.875rem;
}
.install-banner.visible { display: flex; }
.install-banner button {
    background: var(--green-600);
    color: white;
    border: none;
    padding: 0.4rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
}
.install-dismiss {
    background: none !important;
    color: rgba(255,255,255,0.5) !important;
    padding: 0.25rem !important;
    font-size: 1.2rem !important;
}

/* Offline indicator */
.offline-bar {
    display: none;
    background: #fef3c7;
    color: #92400e;
    text-align: center;
    padding: 0.4rem;
    font-size: 0.8rem;
    font-weight: 600;
}
.offline-bar.visible { display: block; }

/* -- Container -- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem 1rem;
    padding-bottom: 5rem;
}

/* -- Cards -- */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-body { padding: 1rem 1.25rem; }

/* -- Filter Bar -- */
.filter-bar {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.filter-bar select, .filter-bar input[type="text"] { flex: 1; min-width: 140px; }

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 0.35rem;
}

input, select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1.5px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--gray-800);
    background: white;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    -webkit-appearance: none;
}
input[type="checkbox"] {
    width: auto;
    padding: 0;
    border: none;
    border-radius: 0;
    background: none;
    -webkit-appearance: checkbox;
    appearance: checkbox;
}
input:focus, select:focus {
    border-color: var(--green-600);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.25);
}

/* -- Buttons -- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.btn-primary { background: var(--green-600); color: white; }
.btn-primary:hover { background: var(--green-700); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--gray-200); color: var(--gray-600); }
.btn-secondary:hover { background: var(--gray-300); }
.btn-danger { background: var(--red-50); color: var(--red-500); }
.btn-danger:hover { background: var(--red-100); }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.75rem; }
.btn-icon { width: 30px; height: 30px; padding: 0; border-radius: 6px; font-size: 0.8rem; }

/* --------------------------------
   TILE GRID
-------------------------------- */
.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.6rem;
    margin-top: 0.75rem;
}

.tile {
    background: var(--surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    padding: 0.7rem 0.85rem;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: box-shadow 0.2s, transform 0.15s;
    border-left: 3px solid var(--green-600);
}
.tile:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.tile:active { transform: scale(0.99); }

/* Status colors */
.tile.overdue { border-left-color: var(--red-500); background: linear-gradient(to right, var(--red-50), var(--surface) 30%); }
.tile.today { border-left-color: var(--yellow-500); background: linear-gradient(to right, var(--yellow-50), var(--surface) 30%); }

/* Gekauft */
.tile.gekauft {
    border-left-color: var(--gray-300);
    background: var(--gray-100);
    opacity: 0.5;
    order: 999;
}
.tile.gekauft .tile-title {
    text-decoration: line-through;
    color: var(--gray-400);
}
.tile.gekauft .tile-field-value,
.tile.gekauft .tile-field-value.large,
.tile.gekauft .tile-date { color: var(--gray-400); }
.tile.gekauft .tile-badge.done {
    background: var(--green-50);
    color: var(--green-600);
}

/* -- Gekauft Section -- */
.gekauft-section {
    margin-top: 1.5rem;
}
.gekauft-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.7rem 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    transition: background 0.15s;
}
.gekauft-toggle:hover { background: var(--surface-raised); }
.gekauft-toggle-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-500);
}
.gekauft-toggle-left .count {
    background: var(--gray-200);
    color: var(--gray-600);
    padding: 0.1rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
}
.gekauft-toggle-arrow {
    font-size: 1rem;
    color: var(--gray-400);
    transition: transform 0.25s;
}
.gekauft-toggle-arrow.open { transform: rotate(180deg); }
.gekauft-grid {
    display: none;
    margin-top: 0.65rem;
}
.gekauft-grid.open {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.6rem;
}
.gekauft-clear {
    margin-top: 0.5rem;
    text-align: right;
}

/* Tile header */
.tile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.4rem;
}
.tile-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1.25;
    flex: 1;
}
.tile-actions {
    display: none;
    gap: 0.3rem;
    flex-shrink: 0;
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--surface);
    padding: 0.25rem;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    z-index: 10;
}
.tile-actions.visible { display: flex; }

/* Tile body info */
.tile-info {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.4rem;
    align-items: baseline;
}
.tile-field {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}
.tile-field-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--gray-400);
}
.tile-field-value {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-700);
}
.tile-field-value.large {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-500);
}

/* Tile footer */
.tile-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.35rem;
    border-top: 1px solid var(--gray-200);
    margin-top: auto;
}
.tile-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
}
.tile-date i { font-size: 0.8rem; }
.tile-date.overdue { color: var(--red-500); font-weight: 600; }
.tile-date.today { color: var(--yellow-500); font-weight: 600; }

.tile-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--green-50);
    color: var(--green-600);
}
.tile-badge.danger { background: var(--red-100); color: var(--red-500); }
.tile-badge.warn { background: var(--yellow-100); color: var(--yellow-500); }

/* -- Group by Laden -- */
.group-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    white-space: nowrap;
}
.group-toggle input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--green-600);
    cursor: pointer;
}
.group-toggle span {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-600);
}
.store-group-header {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.25rem 0.2rem;
    margin-top: 0.25rem;
}
.store-group-header:first-child {
    margin-top: 0;
}
.store-group-header .store-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.store-group-header .store-count {
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--gray-200);
    color: var(--gray-600);
    padding: 0.1rem 0.45rem;
    border-radius: 10px;
}
.store-group-header .store-line {
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

/* -- Empty State -- */
.empty-state {
    text-align: center;
    padding: 3.5rem 1rem;
    grid-column: 1 / -1;
}
.empty-icon { font-size: 3.5rem; margin-bottom: 0.75rem; color: var(--gray-300); }
.empty-title { font-size: 1.1rem; color: var(--gray-600); margin-bottom: 0.25rem; font-weight: 600; }
.empty-text { color: var(--gray-400); font-size: 0.9rem; margin-bottom: 1.5rem; }

/* -- Form Grid -- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.form-grid .full-width { grid-column: 1 / -1; }

/* -- Modal -- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 200;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    backdrop-filter: blur(4px);
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--surface);
    border-radius: var(--radius) var(--radius) 0 0;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 560px;
    max-height: 92vh;
    overflow-y: auto;
    animation: slideUp 0.25s ease;
}
@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}
.modal-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--surface);
    z-index: 1;
}
.modal-header h2 { font-size: 1.1rem; }
.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-400);
    cursor: pointer;
    line-height: 1;
    padding: 0.25rem;
}
.modal-body { padding: 1.25rem; }
.modal-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* -- FAB -- */
.fab {
    display: flex;
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--green-600);
    color: white;
    border: none;
    font-size: 1.75rem;
    box-shadow: 0 4px 14px rgba(59,130,246,0.4);
    cursor: pointer;
    z-index: 50;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.fab:active { transform: scale(0.9); background: var(--green-700); }

/* -- Toast -- */
.toast-container {
    position: fixed;
    bottom: 5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.toast {
    background: var(--surface-raised);
    color: var(--gray-800);
    padding: 0.7rem 1.5rem;
    border-radius: 24px;
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.3s ease;
    white-space: nowrap;
    border: 1px solid var(--gray-200);
}
.toast.success { background: var(--green-600); color: white; border-color: transparent; }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* -- Login Screen -- */
.login-screen {
    position: fixed;
    inset: 0;
    background: var(--gray-100);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.login-screen.hidden { display: none; }
.login-card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 2rem 1.75rem;
    width: 100%;
    max-width: 380px;
}
.login-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

/* -- Rezept Items -- */
.rezept-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.6rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.rezept-item:hover { background: var(--gray-100); }
.zutat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0;
    font-size: 0.85rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.zutat-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--green-600);
    cursor: pointer;
    flex-shrink: 0;
}

/* -- App wrapper (hidden when not logged in) -- */
.app-content.hidden { display: none; }

/* -- Responsive -- */
@media (min-width: 769px) {
    .modal-overlay { align-items: center; padding: 1rem; }
    .modal { border-radius: var(--radius); }
    .navbar-brand .short-label { display: none; }
}

@media (max-width: 768px) {
    .form-grid { grid-template-columns: 1fr; }
    .fab { display: flex; }
    .filter-bar { flex-direction: column; gap: 0.5rem; }
    .filter-bar select, .filter-bar input[type="text"] { min-width: 100%; }
    .navbar-brand .full-label { display: none; }
    .container { padding: 0.75rem 0.5rem; padding-bottom: 6rem; }
    .btn-nav.desktop-only { display: none; }
    .tile-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0.5rem; }
    .gekauft-grid.open { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 0.5rem; }
    .tile { padding: 0.6rem 0.75rem; }

    /* Larger touch targets on mobile */
    input, select { padding: 0.7rem 0.75rem; font-size: 1rem; }
    .btn { padding: 0.6rem 1rem; font-size: 0.85rem; min-height: 44px; }
    .btn-icon { width: 36px; height: 36px; min-height: 36px; font-size: 0.9rem; }
    .modal-body { padding: 1rem; }
    .modal-header { padding: 1rem; }
    .modal-footer { padding: 0.85rem 1rem; }
    .modal-close { padding: 0.5rem; font-size: 1.6rem; }

    /* Compact tiles on mobile */
    .tile-title { font-size: 0.9rem; }
    .tile-field-value.large { font-size: 0.9rem; }
    .tile-date { font-size: 0.72rem; }
    .tile-badge { font-size: 0.65rem; padding: 0.15rem 0.4rem; }
    .btn-icon { width: 28px; height: 28px; min-height: 28px; font-size: 0.75rem; }

    /* Gekauft toggle easier to tap */
    .gekauft-toggle { padding: 0.8rem 1rem; min-height: 48px; }

    /* Toast positioning for mobile */
    .toast-container { bottom: 6rem; }
}

@media (min-width: 1025px) {
    .tile-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

/* Safe area for notch devices */
@supports (padding: env(safe-area-inset-top)) {
    .navbar { padding-top: env(safe-area-inset-top); height: calc(56px + env(safe-area-inset-top)); }
    .container {
        padding-left: max(0.5rem, env(safe-area-inset-left));
        padding-right: max(0.5rem, env(safe-area-inset-right));
    }
    .fab {
        bottom: calc(1.5rem + env(safe-area-inset-bottom));
        right: max(1.5rem, env(safe-area-inset-right));
    }
    .modal { padding-bottom: env(safe-area-inset-bottom); }
}