/* ============================================
   AloneFinder - Minimalist Solo Cooking
   Clean, direct, essential
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;0,700;0,900;1,400;1,700&family=Noto+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,600&display=swap');

/* ============================================
   Core Variables
   ============================================ */
:root {
    /* Monochrome Base */
    --white: #FFFFFF;
    --ash: #FAFAFA;
    --mist: #F5F5F5;
    --fog: #E0E0E0;
    --steel: #BDBDBD;
    --slate: #757575;
    --graphite: #424242;
    --charcoal: #212121;
    --black: #000000;
    
    /* Accent Color */
    --crimson: #C62828;
    --crimson-dark: #B71C1C;
    --crimson-light: #E53935;
    
    /* Typography */
    --font-primary: 'Roboto', -apple-system, system-ui, sans-serif;
    --font-secondary: 'Noto Sans', -apple-system, system-ui, sans-serif;
    
    /* Spacing */
    --s-xs: 0.5rem;
    --s-s: 1rem;
    --s-m: 1.5rem;
    --s-l: 2.5rem;
    --s-xl: 4rem;
    --s-xxl: 6rem;
    
    /* Borders */
    --r-s: 4px;
    --r-m: 8px;
    --r-l: 12px;
    --r-xl: 20px;
    
    /* Shadows */
    --shadow-1: 0 1px 8px rgba(0, 0, 0, 0.08);
    --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-3: 0 8px 24px rgba(0, 0, 0, 0.16);
    
    /* Timing */
    --t-fast: 0.2s ease;
    --t-normal: 0.3s ease;
    --t-slow: 0.4s ease;
    
    /* Layout */
    --max-width: 1400px;
    --content-width: 960px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--charcoal);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--black);
    margin-bottom: var(--s-m);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 900;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.015em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
}

h4 {
    font-size: 1.25rem;
    font-weight: 700;
}

p {
    margin-bottom: var(--s-m);
    color: var(--graphite);
}

/* ============================================
   Layout
   ============================================ */
.page-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--s-m);
}

.page-wrap--narrow {
    max-width: var(--content-width);
}

.align-center {
    text-align: center;
}

/* ============================================
   Buttons
   ============================================ */
.action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--s-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--r-s);
    cursor: pointer;
    transition: all var(--t-normal);
}

.action--primary {
    background: var(--charcoal);
    color: white;
    box-shadow: var(--shadow-1);
}

.action--primary:hover {
    background: var(--black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}

.action--accent {
    background: var(--crimson);
    color: white;
    box-shadow: var(--shadow-1);
}

.action--accent:hover {
    background: var(--crimson-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-2);
}

.action--outline {
    background: transparent;
    color: var(--charcoal);
    border: 2px solid var(--charcoal);
}

.action--outline:hover {
    background: var(--charcoal);
    color: white;
}

.action svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   Header
   ============================================ */
.page-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--fog);
    transition: all var(--t-normal);
}

.page-header.elevated {
    box-shadow: var(--shadow-1);
}

.page-header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--s-s) 0;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--s-xs);
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--black);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.site-logo__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--r-s);
}

.site-logo span {
    color: var(--crimson);
}

/* Navigation */
.primary-nav {
    display: flex;
    align-items: center;
    gap: var(--s-l);
}

.primary-nav__list {
    display: flex;
    gap: var(--s-l);
}

.primary-nav__link {
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate);
    position: relative;
    padding: 0.5rem 0;
}

.primary-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--crimson);
    transition: width var(--t-normal);
}

.primary-nav__link:hover,
.primary-nav__link.current {
    color: var(--black);
}

.primary-nav__link:hover::after,
.primary-nav__link.current::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-trigger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--s-xs);
}

.menu-trigger span {
    width: 26px;
    height: 2px;
    background: var(--black);
    transition: all var(--t-normal);
}

/* Side Menu */
.side-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--white);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    padding: var(--s-xl) var(--s-l);
    transition: right var(--t-normal);
}

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

.side-menu__close {
    position: absolute;
    top: var(--s-l);
    right: var(--s-l);
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--black);
    line-height: 1;
}

.side-menu__links {
    display: flex;
    flex-direction: column;
    gap: var(--s-m);
    margin-top: var(--s-xl);
}

.side-menu__link {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--slate);
    padding: var(--s-s) 0;
    border-bottom: 1px solid var(--fog);
}

.side-menu__link:hover {
    color: var(--crimson);
}

/* ============================================
   Intro Section
   ============================================ */
.intro-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 72px;
    overflow: hidden;
}

.intro-section__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.intro-section__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(40%);
}

.intro-section__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.75) 0%, rgba(33, 33, 33, 0.65) 100%);
}

.intro-section__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 840px;
    padding: var(--s-xl) var(--s-m);
}

.intro-section__badge {
    display: inline-block;
    padding: 0.625rem 1.5rem;
    background: rgba(198, 40, 40, 0.2);
    border: 1px solid rgba(198, 40, 40, 0.4);
    border-radius: var(--r-s);
    color: var(--crimson-light);
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--s-m);
}

.intro-section__title {
    color: white;
    margin-bottom: var(--s-m);
}

.intro-section__text {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--s-l);
}

.intro-section__actions {
    display: flex;
    gap: var(--s-m);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Block Section
   ============================================ */
.block {
    padding: var(--s-xxl) 0;
}

.block--white {
    background: var(--white);
}

.block--ash {
    background: var(--ash);
}

.block--mist {
    background: var(--mist);
}

.block__header {
    max-width: 740px;
    margin: 0 auto var(--s-xl);
    text-align: center;
}

.block__label {
    display: inline-block;
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--crimson);
    margin-bottom: var(--s-s);
}

.block__title {
    margin-bottom: var(--s-m);
}

.block__desc {
    font-size: 1.125rem;
    color: var(--slate);
}

.block__line {
    width: 80px;
    height: 3px;
    background: var(--crimson);
    margin: var(--s-m) auto 0;
}

/* ============================================
   Recipe Grid
   ============================================ */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--s-l);
}

.recipe-card {
    background: white;
    border: 1px solid var(--fog);
    border-radius: var(--r-m);
    overflow: hidden;
    transition: all var(--t-normal);
}

.recipe-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-3);
    border-color: var(--steel);
}

.recipe-card__img {
    height: 260px;
    overflow: hidden;
}

.recipe-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--t-slow);
}

.recipe-card:hover .recipe-card__img img {
    transform: scale(1.06);
}

.recipe-card__tag {
    position: absolute;
    top: var(--s-m);
    right: var(--s-m);
    padding: 0.5rem 1rem;
    background: var(--charcoal);
    color: white;
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--r-s);
}

.recipe-card__body {
    padding: var(--s-m);
}

.recipe-card__name {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--s-s);
}

.recipe-card:hover .recipe-card__name {
    color: var(--crimson);
}

.recipe-card__text {
    color: var(--slate);
    font-size: 0.9375rem;
    margin-bottom: var(--s-m);
}

.recipe-card__info {
    display: flex;
    gap: var(--s-m);
}

.recipe-card__info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--graphite);
}

.recipe-card__info-item svg {
    width: 18px;
    height: 18px;
    stroke: var(--crimson);
}

/* ============================================
   Category Grid
   ============================================ */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--s-l);
}

.category-card {
    position: relative;
    height: 340px;
    border-radius: var(--r-m);
    overflow: hidden;
    border: 1px solid var(--fog);
}

.category-card__img {
    width: 100%;
    height: 100%;
}

.category-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(30%);
    transition: all var(--t-slow);
}

.category-card:hover .category-card__img img {
    transform: scale(1.08);
    filter: grayscale(0%);
}

.category-card__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.8) 100%);
}

.category-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--s-l);
    color: white;
    z-index: 2;
}

.category-card__title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.category-card__count {
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 700;
    opacity: 0.9;
}

/* ============================================
   Article Grid
   ============================================ */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--s-l);
}

.article-card {
    background: white;
    border: 1px solid var(--fog);
    border-radius: var(--r-m);
    overflow: hidden;
    transition: all var(--t-normal);
}

.article-card:hover {
    box-shadow: var(--shadow-2);
    border-color: var(--steel);
}

.article-card__img {
    height: 240px;
    overflow: hidden;
}

.article-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--t-slow);
}

.article-card:hover .article-card__img img {
    transform: scale(1.05);
}

.article-card__body {
    padding: var(--s-m);
}

.article-card__date {
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--crimson);
    margin-bottom: var(--s-xs);
}

.article-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--s-s);
}

.article-card:hover .article-card__title {
    color: var(--crimson);
}

.article-card__excerpt {
    color: var(--slate);
    font-size: 0.9375rem;
}

/* ============================================
   Footer
   ============================================ */
.page-footer {
    background: var(--charcoal);
    color: rgba(255, 255, 255, 0.85);
    padding: var(--s-xl) 0 var(--s-l);
}

.page-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--s-xl);
    margin-bottom: var(--s-xl);
}

.page-footer__col h4 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--s-m);
    font-weight: 700;
}

.page-footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--s-s);
}

.page-footer__link {
    color: rgba(255, 255, 255, 0.75);
    font-weight: 500;
    transition: color var(--t-fast);
}

.page-footer__link:hover {
    color: var(--crimson-light);
}

.page-footer__text {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.page-footer__divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
    margin: var(--s-l) 0;
}

.page-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.65);
}

.page-footer__legal {
    display: flex;
    gap: var(--s-m);
}

/* ============================================
   Utilities
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .page-footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .primary-nav {
        display: none;
    }
    
    .menu-trigger {
        display: flex;
    }
    
    .intro-section {
        min-height: 85vh;
    }
    
    .recipe-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .page-footer__grid {
        grid-template-columns: 1fr;
    }
    
    .page-footer__bottom {
        flex-direction: column;
        gap: var(--s-m);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --s-xxl: 4rem;
    }
    
    .intro-section__actions {
        flex-direction: column;
    }
    
    .article-grid {
        grid-template-columns: 1fr;
    }
}