/* ==========================================================================
   MASCULINE FORM - Main Stylesheet
   Version: 1.0.0
   Date: 2025-12-25
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variables & Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-charcoal: #1A1A1A;
    --color-grey: #2D2D2D;
    --color-light-grey: #666666;
    --color-white: #F8F5F2;
    --color-sand: #E8E1D7;
    --color-navy: #0A2463;
    --color-gold: #B8860B;
    
    /* Typography */
    /* Note: Fonts must be imported in HTML head */
    --font-heading-en: 'Playfair Display', serif;
    --font-body-en: 'Inter', sans-serif;
    --font-heading-cn: 'Noto Serif SC', serif;
    --font-body-cn: 'Noto Sans SC', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;  /* 8px */
    --spacing-sm: 1rem;    /* 16px */
    --spacing-md: 2rem;    /* 32px */
    --spacing-lg: 4rem;    /* 64px */
    --spacing-xl: 8rem;    /* 128px */
    
    /* Transitions */
    --transition-fast: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Borders & Radius */
    --border-light: 1px solid var(--color-sand);
    --border-dark: 1px solid var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   2. Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body-cn), var(--font-body-en), sans-serif;
    background-color: var(--color-white);
    color: var(--color-charcoal);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading-cn), var(--font-heading-en), serif;
    font-weight: 400;
    line-height: 1.3;
    color: var(--color-charcoal);
}

h1 {
    font-size: 4rem; 
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.subtitle {
    font-family: var(--font-body-en);
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-light-grey);
    margin-bottom: var(--spacing-xs);
    display: block;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-grey);
    max-width: 65ch;
}

/* --------------------------------------------------------------------------
   4. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
    width: 90%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --------------------------------------------------------------------------
   5. Components
   -------------------------------------------------------------------------- */

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-fast);
    background: transparent;
}

.navbar.scrolled {
    background-color: rgba(248, 245, 242, 0.98);
    padding: var(--spacing-sm) 0;
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-family: var(--font-heading-en);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-charcoal);
    z-index: 1001;
}

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

.nav-links a {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    padding-bottom: 4px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-gold);
    transition: width var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    z-index: 1001;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    width: 100%;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2); /* Slight darkening for text readability */
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-white);
    padding: 0 var(--spacing-sm);
}

.hero-content h1 {
    color: var(--color-white);
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.btn-explore {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: 12px 30px;
    border: 1px solid var(--color-white);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
    background: transparent;
}

.btn-explore:hover {
    background: var(--color-white);
    color: var(--color-charcoal);
}

.scroll-hint {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-white);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 2;
    animation: fadeInDown 2s infinite;
}

/* Feature Blocks (Alternating) */
.feature-block {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.feature-block:last-child {
    margin-bottom: 0;
}

.feature-block.reverse {
    flex-direction: row-reverse;
}

.feature-img {
    flex: 1;
    height: 700px; /* Consistent height */
    overflow: hidden;
}

.feature-img img {
    width: 100%;
    height: 100%;
    transition: transform var(--transition-smooth);
}

.feature-block:hover .feature-img img {
    transform: scale(1.05);
}

.feature-text {
    flex: 1;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-text.bg-dark {
    background-color: var(--color-charcoal);
    color: var(--color-white);
    height: 100%;
}

.feature-text.bg-dark h2,
.feature-text.bg-dark p {
    color: var(--color-white);
}

/* Minimalist Card */
.card {
    position: relative;
    display: block;
    height: 100%;
}

.card-image {
    width: 100%;
    height: 500px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.card-image img {
    width: 100%;
    height: 100%;
    transition: transform var(--transition-smooth);
}

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

.card-content {
    padding-top: var(--spacing-xs);
}

/* Philosophy Page Specifics */
.philosophy-hero {
    height: 70vh;
    display: flex;
    align-items: flex-end;
    padding-bottom: var(--spacing-xl);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.principle-item {
    border: var(--border-light);
    padding: var(--spacing-md);
    text-align: center;
    transition: border-color var(--transition-fast);
}

.principle-item:hover {
    border-color: var(--color-gold);
}

.principle-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gold);
}

/* Timeline */
.timeline {
    position: relative;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background: var(--color-sand);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-content {
    width: 45%;
    padding: var(--spacing-md);
}

.timeline-date {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-white);
    padding: 10px 0;
    font-family: var(--font-heading-en);
    font-size: 1.5rem;
    color: var(--color-charcoal);
    border: 1px solid var(--color-sand); /* Circle style or box style */
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    width: 10px;
    height: 10px;
    background: var(--color-gold);
    border-radius: 50%;
    transform: translateX(-50%);
}

/* Styling Page Specifics */
.styling-nav {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-sand);
    overflow-x: auto;
}

.styling-nav li {
    margin: 0 var(--spacing-md);
    white-space: nowrap;
}

.styling-nav a {
    display: block;
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--color-light-grey);
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

.styling-nav a.active,
.styling-nav a:hover {
    color: var(--color-charcoal);
    border-color: var(--color-gold);
}

.scenario-content {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in;
}

.scenario-content.active {
    display: block;
    opacity: 1;
}

/* Seasonal Circle */
.seasonal-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding: var(--spacing-md);
}

.seasonal-grid {
    display: grid;
    grid-template-columns: 1fr 300px 1fr;
    gap: var(--spacing-md);
    align-items: center;
    text-align: center;
}

.season-center {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto;
    border: 4px solid var(--color-white);
    box-shadow: 0 0 0 1px var(--color-sand);
}

.season-info h4 {
    color: var(--color-gold);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-sand);
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-xl);
    text-align: center;
}

.footer-content {
    font-size: 0.875rem;
    color: var(--color-light-grey);
    font-family: var(--font-body-en);
}

/* Loader */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-white);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-text {
    font-family: var(--font-heading-en);
    letter-spacing: 0.2em;
    margin-bottom: 20px;
}

.progress-bar {
    width: 200px;
    height: 1px;
    background: var(--color-sand);
    position: relative;
}

.progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: var(--color-charcoal);
    transition: width 0.1s linear;
}

/* Animations */
@keyframes fadeInDown {
    0% { opacity: 0; transform: translate(-50%, -20px); }
    100% { opacity: 1; transform: translate(-50%, 0); }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}