/* 
 * Modern Menswear Website - Global Styles
 * Design System: Minimalist, Professional, Responsive
 * Colors: Dark Charcoal (#2C3E50), Light Grey (#ECF0F1), Off-White (#FDFEFE)
 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&family=Montserrat:wght@400;600&display=swap');

:root {
    --color-primary: #2C3E50;
    --color-secondary: #34495E;
    --color-accent: #95A5A6;
    --color-background: #FDFEFE;
    --color-surface: #F5F7FA;
    --color-text-main: #2C3E50;
    --color-text-light: #7F8C8D;
    --color-border: #E0E0E0;
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Noto Sans SC', 'Source Han Sans CN', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    --container-width: 1200px;
    --header-height: 80px;
    --transition-standard: all 0.3s ease;
}

/* --- Reset & Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -1px; }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); margin-bottom: var(--spacing-md); }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1.5em; color: var(--color-text-light); font-weight: 300; }

.text-center { text-align: center; }
.text-uppercase { text-transform: uppercase; letter-spacing: 2px; font-size: 0.9rem; }

/* --- Layout --- */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* --- Header & Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(253, 254, 254, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    transition: var(--transition-standard);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 var(--spacing-sm);
}

.hero-content h1, .hero-content p {
    color: var(--color-white);
}

/* --- Components: Buttons --- */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid var(--color-primary);
    cursor: pointer;
    transition: var(--transition-standard);
    margin-top: var(--spacing-sm);
}

.btn:hover {
    background-color: transparent;
    color: var(--color-primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
}

/* --- Components: Cards --- */
.card {
    position: relative;
    overflow: hidden;
    group: hover;
}

.card-image-wrapper {
    overflow: hidden;
    aspect-ratio: 3/4;
    position: relative;
}

.card-image {
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
}

.card:hover .card-image {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-sm) 0;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card-category {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- Overlay Card Style (for Series) --- */
.card-overlay .card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: var(--color-white);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.card-overlay:hover .card-content {
    transform: translateY(0);
}

.card-overlay:hover .card-image {
    filter: brightness(0.9);
}

.card-overlay .card-title, 
.card-overlay p {
    color: var(--color-white);
}

/* --- Footer --- */
.footer {
    background-color: var(--color-background);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
    margin-top: auto;
}

.copyright {
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

/* --- Specific Section Styles --- */
.section-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.feature-box {
    padding: var(--spacing-md);
    background-color: var(--color-surface);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --header-height: 60px;
    }
    
    h1 { font-size: 2.5rem; }
    
    .navbar {
        padding: 0 1rem;
    }
    
    .nav-menu {
        display: none; /* Simple hide for MVP, ideally hamburger menu */
    }
    
    /* Basic Mobile Menu Fallback */
    .nav-menu.mobile-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--color-background);
        padding: var(--spacing-md);
        box-shadow: 0 5px 10px rgba(0,0,0,0.05);
    }

    .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        padding: 0 var(--spacing-md);
    }
}

/* --- Utilities --- */
.fade-in {
    animation: fadeIn 1s ease forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.mt-4 { margin-top: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-sm); }