/* =============================================
   BELM RESTORATION — CSS Design System
   ============================================= */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors */
    --color-primary:     #1a1a2e;
    --color-secondary:   #16213e;
    --color-accent:      #c0392b;
    --color-accent-dark: #a83224;
    --color-gold:        #d4a54a;
    --color-gold-light:  #e8c674;
    --color-cream:       #f5f0e8;
    --color-cream-dark:  #e8dfd3;
    --color-slate:       #2c3e50;
    --color-gray-100:    #f8f9fa;
    --color-gray-200:    #e9ecef;
    --color-gray-300:    #dee2e6;
    --color-gray-500:    #6c757d;
    --color-gray-700:    #495057;
    --color-gray-900:    #212529;
    --color-white:       #ffffff;
    --color-overlay:     rgba(26, 26, 46, 0.85);

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --space-xs:  0.5rem;
    --space-sm:  1rem;
    --space-md:  1.5rem;
    --space-lg:  2.5rem;
    --space-xl:  4rem;
    --space-xxl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;

    /* Transitions */
    --transition-fast:   0.2s ease;
    --transition-base:   0.35s ease;
    --transition-slow:   0.6s ease;

    /* Shadows */
    --shadow-sm:  0 2px 8px rgba(0,0,0,0.08);
    --shadow-md:  0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg:  0 8px 40px rgba(0,0,0,0.16);
    --shadow-xl:  0 12px 60px rgba(0,0,0,0.20);

    /* Border Radius */
    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---------- Section Common Styles ---------- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gold);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-cream);
}
::-webkit-scrollbar-thumb {
    background: var(--color-gold);
    border-radius: var(--radius-full);
}

/* =============================================
   HEADER
   ============================================= */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);
}

.site-header.scrolled {
    background: rgba(26, 26, 46, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-name, .logo-tagline {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 1px;
}

/* Navigation */
.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.8);
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
}

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

.nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: transform var(--transition-base), opacity var(--transition-fast);
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   HERO
   ============================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('../images/project1-complete.jpg') center/cover no-repeat;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        160deg,
        rgba(26, 26, 46, 0.92) 0%,
        rgba(26, 26, 46, 0.70) 40%,
        rgba(44, 62, 80, 0.65) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: calc(var(--header-height) + 2rem) 1rem 2rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(212, 165, 74, 0.15);
    border: 1px solid rgba(212, 165, 74, 0.35);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-gold-light);
    margin-bottom: var(--space-lg);
}

.badge-icon {
    font-size: 0.6rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.hero-title em {
    font-style: italic;
    color: var(--color-gold);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255,255,255,0.7);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(192, 57, 43, 0.35);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(192, 57, 43, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    border-color: var(--color-white);
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-gold);
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255,255,255,0.5);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.15);
}

/* Scroll Indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.4);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.7); }
    50%      { opacity: 1;   transform: scaleY(1); }
}

/* =============================================
   SERVICES
   ============================================= */
.services {
    padding: var(--space-xxl) 0;
    background: var(--color-cream);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid rgba(0,0,0,0.04);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.service-card:hover .service-icon {
    color: var(--color-gold);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.service-desc {
    font-size: 0.92rem;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* =============================================
   PORTFOLIO
   ============================================= */
.portfolio {
    padding: var(--space-xxl) 0;
    background: var(--color-white);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.portfolio-item--wide {
    grid-column: span 1;
}

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

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(26, 26, 46, 0.9) 0%,
        rgba(26, 26, 46, 0.3) 50%,
        transparent 100%
    );
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-category {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gold);
    margin-bottom: 0.25rem;
}

.portfolio-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.portfolio-view {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.portfolio-item:hover .portfolio-view {
    color: var(--color-gold);
}

/* =============================================
   ABOUT
   ============================================= */
.about {
    padding: var(--space-xxl) 0;
    background: var(--color-cream);
}

.about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.about-experience-badge {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.experience-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.experience-text {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    line-height: 1.3;
}

.about-content .section-label {
    text-align: left;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.about-lead {
    font-size: 1.1rem;
    color: var(--color-slate);
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.about-content p {
    margin-bottom: var(--space-sm);
    color: var(--color-gray-500);
}

.about-values {
    margin-top: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.value-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}

.value-item strong {
    display: block;
    font-size: 0.95rem;
    color: var(--color-primary);
    margin-bottom: 0.1rem;
}

.value-item span {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

/* =============================================
   CONTACT
   ============================================= */
.contact {
    padding: var(--space-xxl) 0;
    background: var(--color-primary);
    color: var(--color-white);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.contact .section-label {
    text-align: left;
    color: var(--color-gold);
}

.contact .section-title {
    text-align: left;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.contact-text p {
    color: rgba(255,255,255,0.6);
    font-size: 1.05rem;
    line-height: 1.8;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-white);
}

.form-group input,
.form-group textarea {
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-white);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-gold);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(212, 165, 74, 0.15);
}

.form-submit {
    margin-top: 0.5rem;
    width: 100%;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--color-secondary);
    padding: var(--space-xl) 0 0;
    color: rgba(255,255,255,0.6);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-about {
    margin-top: var(--space-sm);
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4,
.footer-services h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.footer-links li,
.footer-services li {
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: var(--color-gold);
}

.footer-bottom {
    padding: var(--space-md) 0;
    font-size: 0.8rem;
    text-align: center;
    color: rgba(255,255,255,0.35);
}

.footer-bottom a {
    color: var(--color-gold);
}

.footer-bottom a:hover {
    color: var(--color-gold-light);
}

/* =============================================
   LIGHTBOX
   ============================================= */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0,0,0,0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    padding: 2rem;
}

.lightbox.open {
    opacity: 1;
    visibility: visible;
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 2.5rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    z-index: 2001;
    line-height: 1;
}

.lightbox-close:hover {
    opacity: 1;
    transform: scale(1.2);
}

.lightbox-content {
    max-width: 900px;
    width: 100%;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.lightbox.open .lightbox-content {
    transform: scale(1) translateY(0);
}

.lightbox-image {
    width: 100%;
    max-height: 65vh;
    object-fit: cover;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lightbox-info {
    background: var(--color-primary);
    padding: 1.5rem 2rem;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.lightbox-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.lightbox-desc {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

/* =============================================
   ANIMATIONS
   Content is VISIBLE by default. JS adds .js-ready to <body>
   to enable the hidden→visible animation cycle.
   ============================================= */

/* Only hide elements when JS is loaded and ready */
.js-ready .animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-ready .animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays for service cards */
.js-ready .services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.js-ready .services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }
.js-ready .services-grid .service-card:nth-child(4) { transition-delay: 0.3s; }
.js-ready .services-grid .service-card:nth-child(5) { transition-delay: 0.4s; }
.js-ready .services-grid .service-card:nth-child(6) { transition-delay: 0.5s; }

/* Portfolio stagger */
.js-ready .portfolio-grid .portfolio-item:nth-child(2) { transition-delay: 0.1s; }
.js-ready .portfolio-grid .portfolio-item:nth-child(3) { transition-delay: 0.2s; }
.js-ready .portfolio-grid .portfolio-item:nth-child(4) { transition-delay: 0.3s; }

/* =============================================
   RESPONSIVE — TABLET
   ============================================= */
@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .about-image img {
        height: 400px;
    }

    .contact-inner {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }

    .footer-brand {
        grid-column: span 2;
    }
}

/* =============================================
   RESPONSIVE — MOBILE
   ============================================= */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .hamburger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-primary);
        padding: calc(var(--header-height) + 2rem) 2rem 2rem;
        transition: right var(--transition-base);
        box-shadow: var(--shadow-xl);
        z-index: 999;
    }

    .main-nav.open {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .hero-stats {
        gap: 1rem;
        flex-wrap: wrap;
    }

    .stat-divider {
        display: none;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-item--wide {
        grid-column: span 1;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .footer-brand {
        grid-column: span 1;
    }

    .hero-title {
        font-size: clamp(2.2rem, 8vw, 3.2rem);
    }

    .about-image img {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}