/* =========================================
   1. BAREVNÉ PROSTŘEDÍ A PROMĚNNÉ
   ========================================= */
:root {
    --bg-color: #f4f4f9;
    --box-bg: #ffffff;
    --text-color: #333333;
    --border-color: #cccccc;
    --border-light: #eeeeee;
    --muted-text: #777777;
    --input-bg: #ffffff;
    --input-text: #333333;
    --cat-bg: #e3f2fd;
    --cat-text: #02569b;
    --cat-border: #0288d1;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --box-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #444444;
    --border-light: #333333;
    --muted-text: #aaaaaa;
    --input-bg: #2d2d2d;
    --input-text: #ffffff;
    --cat-bg: #0d2a40;
    --cat-text: #64b5f6;
    --cat-border: #1e88e5;
}

/* Globální nastavení */
body {
    font-family: sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    margin: 0 auto;
    padding: 10px;
    max-width: 600px;
    transition: 0.3s;
}

body.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding: 0;
    max-width: 100%;
}

/* =========================================
   2. ZÁKLADNÍ PRVKY
   ========================================= */
.box {
    background: var(--box-bg);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.box.mb-large {
    margin-bottom: 50px;
}

.box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-light);
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.box-header h2 {
    margin: 0;
    font-size: 1.1rem;
    border: none;
    padding: 0;
}

.collapsible-box-header {
    cursor: pointer;
    user-select: none;
}

.collapsible-box-header.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

input[type="text"],
select {
    background: var(--input-bg);
    color: var(--input-text);
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box;
}

.btn {
    padding: 8px 12px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.btn-small {
    padding: 0 8px;
    height: 32px;
    font-size: 13px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.btn-danger {
    background: #dc3545;
}

.btn-secondary {
    background: #6c757d;
}

/* =========================================
   3. POLOŽKA SEZNAMU
   ========================================= */
.item-wrapper {
    border-bottom: 1px solid var(--border-light);
    padding: 10px 0;
}

.item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
}

/* První prvek (tlačítko Do košíku/Vrátit) */
.item>form:first-child {
    flex: 0 0 75px;
}

/* Střední text (Surovina) */
.item-text {
    flex: 1;
    display: flex;
    align-items: center;
    min-width: 0;
    line-height: 1.3;
}

.item-text strong {
    font-size: 0.95rem;
    word-break: break-word;
}

/* Akce vpravo (Množství, Tužka, X, Přidat) */
.item-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

/* --- OPTIMALIZOVANÁ ŠÍŘKA POLÍČEK A OCHRANA PROTI ZOOMU (16px) --- */
.qty-input-small {
    width: 40px;
    height: 32px !important;
    padding: 0 2px !important;
    font-size: 16px !important;
    /* Kvůli iOS Zoomu */
    text-align: center;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--input-text);
    border-radius: 4px;
    margin: 0 !important;
    box-sizing: border-box;
}

.qty-input {
    width: 52px;
    height: 32px !important;
    padding: 0 2px !important;
    font-size: 16px !important;
    /* Kvůli iOS Zoomu */
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--input-text);
    border-radius: 4px;
    margin: 0 !important;
    box-sizing: border-box;
}

/* Škrtnutí v košíku */
.item.in-cart .item-text {
    text-decoration: line-through;
    color: var(--muted-text);
}

.item-actions .btn-danger {
    width: 32px;
    height: 32px;
    padding: 0;
}

/* =========================================
   4. KATEGORIE A OSTATNÍ
   ========================================= */
.cat-header {
    background: var(--cat-bg);
    color: var(--cat-text);
    border-left: 4px solid var(--cat-border);
    padding: 8px 12px;
    border-radius: 0 4px 4px 0;
    font-weight: 800;
    text-transform: uppercase;
    margin-top: 25px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.view-content>.cat-header:first-child {
    margin-top: 5px;
}

.toggle-icon {
    font-size: 0.75rem;
    transition: transform 0.2s ease-in-out;
}

.cat-header.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

.cat-items {
    display: block;
}

.cat-items.collapsed {
    display: none;
}

.view-toggles {
    display: flex;
    gap: 4px;
}

.view-btn {
    padding: 4px 6px;
    font-size: 11px;
    background: var(--border-light);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
}

.view-btn.active {
    background: #007bff;
    color: white;
    border-color: #007bff;
}

.view-content {
    display: none;
}

.view-content.active {
    display: block;
}

.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.header-bar h1 {
    margin: 0;
    font-size: 1.5rem;
}

.header-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: #dc3545;
    color: white;
    border-radius: 50%;
    text-decoration: none;
}

.logout-btn svg {
    width: 18px;
    height: 18px;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    line-height: 1;
}

.bottom-actions {
    display: flex;
    gap: 8px;
    margin-top: 15px;
}

.bottom-actions button,
.bottom-actions form {
    flex: 1;
}

.bottom-actions form button {
    width: 100%;
}

/* ==========================================
   5. PŘIHLAŠOVACÍ A REGISTRAČNÍ FORMULÁŘE
   ========================================== */
.login-box {
    background: var(--box-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 280px;
}

.login-box h2 {
    border: none;
    text-align: center;
    margin-top: 0;
}

.login-box label {
    display: block;
    text-align: left;
    margin-bottom: 5px;
    margin-top: 15px;
    font-weight: bold;
    font-size: 0.95em;
}

.login-box input[type="text"],
.login-box input[type="password"],
.login-box input[type="email"],
.login-box input[type="number"],
.login-box button {
    width: 100%;
    height: 45px;
    box-sizing: border-box;
    font-size: 16px;
    border-radius: 4px;
    margin: 0;
}

.login-box input[type="text"],
.login-box input[type="password"],
.login-box input[type="email"],
.login-box input[type="number"] {
    padding: 0 10px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--input-text);
}

.login-box button {
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.error-message,
.success-message,
.info-message,
.msg-box {
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-message,
.msg-err {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.success-message,
.msg-ok {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.info-message {
    background-color: #e2e3e5;
    color: #383d41;
    border: 1px solid #d6d8db;
}

.password-hint {
    font-size: 0.8em;
    color: var(--muted-text);
    margin-top: 4px;
    display: block;
}

[data-theme="dark"] .error-message,
[data-theme="dark"] .msg-err {
    background-color: rgba(220, 53, 69, 0.2);
    color: #ffb3b8;
    border-color: #dc3545;
}

[data-theme="dark"] .success-message,
[data-theme="dark"] .msg-ok {
    background-color: rgba(40, 167, 69, 0.2);
    color: #81c784;
    border-color: #28a745;
}

[data-theme="dark"] .info-message {
    background-color: rgba(255, 255, 255, 0.1);
    color: #e0e0e0;
    border-color: #555;
}

/* ==========================================
   POSTRANNÍ MENU (HAMBURGER)
   ========================================== */
.side-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 250px;
    height: 100%;
    background-color: var(--bg-color);
    box-shadow: -4px 0 15px rgba(0, 0, 0, 0.2);
    z-index: 4000;
    transition: right 0.3s ease-in-out;
    display: flex;
    flex-direction: column;
}

.side-menu.open {
    right: 0;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 3999;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.menu-overlay.open {
    display: block;
    opacity: 1;
}

.side-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-light);
}

.side-menu-header h3 {
    margin: 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
    border: none;
    padding: 0;
    color: var(--text-color);
}

.close-menu-btn {
    background: transparent !important;
    color: var(--text-color);
    font-size: 30px;
    border: none;
    padding: 0;
    cursor: pointer;
    width: auto;
    margin: 0;
    line-height: 1;
}

.side-menu-item {
    background: transparent !important;
    color: var(--text-color);
    border: none;
    border-bottom: 1px solid var(--border-light);
    padding: 18px 20px;
    text-align: left;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    border-radius: 0;
    margin: 0;
    width: 100%;
    font-weight: 500;
    box-sizing: border-box;
}

.side-menu-item i {
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.header-icon-btn {
    background: transparent;
    color: var(--text-color);
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
}

/* ==========================================
   6. DESKTOP VERZE (PC / Notebooky)
   ========================================== */
@media (min-width: 850px) {

    /* Roztažení aplikace na celou obrazovku s místem pro levé menu */
    body.app-body {
        max-width: 100%;
        margin: 0;
        padding: 20px 40px 20px 290px;
        /* 250px menu + 40px mezera */
    }

    /* Připnutí menu napevno doleva */
    .side-menu {
        right: auto !important;
        /* Zrušení mobilní pozice vpravo */
        left: 0 !important;
        /* Připnutí doleva */
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        border-right: 1px solid var(--border-light);
    }

    /* Skrytí tlačítek a překryvu, které na PC nepotřebujeme */
    .header-icon-btn,
    .close-menu-btn,
    .menu-overlay {
        display: none !important;
    }

    /* Větší mřížka pro recepty na velkém monitoru */
    .recipe-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }
}