/**
 * Luna - Premium Candle E-Commerce
 * Design System & Styles - Part 1: Core
 */

/* ================================
   CSS CUSTOM PROPERTIES
   ================================ */
:root {
    /* Colors - Warm & Professional */
    --color-background: #FAF9F7;
    --color-background-alt: #F5F3F0;
    --color-surface: #FFFFFF;
    --color-text-primary: #2C2420;
    --color-text-secondary: #6B5E54;
    --color-text-muted: #9B8F85;
    --color-accent: #C4A77D;
    --color-accent-hover: #B39468;
    --color-accent-light: #E8DFD3;
    --color-border: #E8E4DF;
    --color-border-light: #F0EDE9;
    --color-success: #5D8A66;
    --color-error: #C45C5C;
    --color-warning: #D4A24C;

    /* Typography */
    --font-heading: 'Cormorant Garamond', 'Georgia', serif;
    --font-body: 'Inter', 'Segoe UI', sans-serif;
    --font-accent: 'Cormorant Garamond', serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: 4.5rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1400px;
    --container-narrow: 900px;
    --header-height: 70px;
    --sidebar-width: 320px;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(44, 36, 32, 0.04);
    --shadow-md: 0 4px 12px rgba(44, 36, 32, 0.08);
    --shadow-lg: 0 12px 40px rgba(44, 36, 32, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ================================
   RESET & BASE
   ================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

ul,
ol {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-md);
}

.text-accent {
    font-family: var(--font-accent);
    font-style: italic;
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--space-4xl) 0;
}

.section--sm {
    padding: var(--space-2xl) 0;
}

/* ================================
   HEADER
   ================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    background-color: rgba(250, 249, 247, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--space-lg);
}

.header__left,
.header__right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
}

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

.header__center {
    flex: 0 0 auto;
}

/* Logo */
.logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-text-primary);
    text-transform: uppercase;
    display: flex;
    align-items: center;
}

.logo__img {
    height: 45px;
    width: auto;
    display: block;
}

.logo:hover {
    color: var(--color-accent);
    opacity: 0.85;
}

/* Header Icons */
.header__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
    position: relative;
}

.header__icon:hover {
    color: var(--color-accent);
}

.header__icon svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.5;
}

.cart-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background-color: var(--color-accent);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hamburger Menu */
.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ================================
   SIDEBAR MENU
   ================================ */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(44, 36, 32, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1100;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.sidebar-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    max-width: 85vw;
    height: 100vh;
    background-color: var(--color-background);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: 1200;
    overflow-y: auto;
}

.sidebar-menu.active {
    transform: translateX(0);
}

.sidebar-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-menu__logo-img {
    height: 60px;
    width: auto;
    display: block;
}

.sidebar-menu__close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
}

.sidebar-menu__close:hover {
    color: var(--color-text-primary);
}

.sidebar-menu__nav {
    padding: var(--space-lg) 0;
}

.sidebar-menu__link {
    display: block;
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.sidebar-menu__link:hover {
    color: var(--color-accent);
    padding-left: calc(var(--space-lg) + 8px);
}

/* Accordion toggle button for parent categories */
.sidebar-menu__toggle {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-heading);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-menu__arrow {
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

/* Submenu (nested links) */
.sidebar-menu__submenu {
    padding-left: var(--space-md);
}

.sidebar-menu__sublink {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    padding-left: calc(var(--space-lg) + var(--space-md));
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.sidebar-menu__sublink:hover {
    color: var(--color-accent);
    padding-left: calc(var(--space-lg) + var(--space-md) + 8px);
}

.sidebar-menu__divider {
    height: 1px;
    background-color: var(--color-border-light);
    margin: var(--space-md) var(--space-lg);
}

.sidebar-menu__footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

.sidebar-menu__contact {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.sidebar-menu__contact a {
    display: block;
    margin-top: var(--space-sm);
    color: var(--color-text-secondary);
}

.sidebar-menu__contact a:hover {
    color: var(--color-accent);
}

/* ================================
   SEARCH OVERLAY
   ================================ */
.search-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(250, 249, 247, 0.98);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.search-overlay__close:hover {
    color: var(--color-text-primary);
}

.search-form {
    width: 100%;
    max-width: 600px;
    padding: 0 var(--space-lg);
}

.search-form__input {
    width: 100%;
    padding: var(--space-lg);
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    border: none;
    border-bottom: 2px solid var(--color-border);
    background: transparent;
    text-align: center;
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast);
}

.search-form__input:focus {
    outline: none;
    border-bottom-color: var(--color-accent);
}

.search-form__input::placeholder {
    color: var(--color-text-muted);
}