/* ==========================================================================
   IRENE STONE - BRAND DESIGN SYSTEM & STYLES (OBSIDIAN & GOLD LUXURY)
   ========================================================================== */

:root {
    /* Color Palette - Default Dark Mode (Obsidian Void) */
    --color-bg: #070708;
    --color-bg-light: #0D0E11;
    --color-black: #FFFFFF;
    --color-dark: #F5F5F7;
    --color-gray-dark: #CCCCCC;
    --color-gray: #8E8E93;
    --color-gray-light: #1C1C1E;
    
    /* Gold Accents */
    --color-gold: #D4AF37;
    --color-gold-light: #F3E5AB;
    --color-gold-dark: #AA7C11;
    --color-gold-glow: rgba(212, 175, 55, 0.08);
    --color-gold-border: rgba(212, 175, 55, 0.2);
    
    /* Header Backgrounds */
    --color-header-bg: rgba(7, 7, 8, 0.85);
    --color-header-scrolled-bg: rgba(7, 7, 8, 0.95);
    
    /* Glassmorphism Variables */
    --glass-bg: rgba(28, 28, 30, 0.45);
    --glass-border: rgba(212, 175, 55, 0.15);
    --glass-blur: 16px;
    
    /* Theme Invariant */
    --logo-mountain-fill: #000000;
    --logo-gem-bg: rgba(28, 28, 30, 0.95);
    
    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Transitions */
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.25s ease-out;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-medium-width: 800px;
}

/* Light Mode Overrides (Marble & Champagne) */
[data-theme="light"] {
    --color-bg: #FFFFFF;
    --color-bg-light: #FAFAF9;
    --color-black: #000000;
    --color-dark: #1C1C1E;
    --color-gray-dark: #333333;
    --color-gray: #666666;
    --color-gray-light: #EFEFEF;
    
    --color-gold-glow: rgba(212, 175, 55, 0.1);
    --color-gold-border: rgba(212, 175, 55, 0.25);
    
    --color-header-bg: rgba(255, 255, 255, 0.85);
    --color-header-scrolled-bg: rgba(255, 255, 255, 0.95);
    
    --glass-bg: rgba(250, 250, 249, 0.7);
    --glass-border: rgba(212, 175, 55, 0.2);
    
    --logo-mountain-fill: #000000;
    --logo-gem-bg: rgba(255, 255, 255, 0.95);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg);
    color: var(--color-gray-dark);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
    background-color: var(--color-bg);
    color: var(--color-gray-dark);
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--color-black);
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

p {
    margin-bottom: 1.5rem;
    font-weight: 300;
    color: var(--color-gray);
}

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

/* LAYOUT UTILITIES */
.container {
    width: 90%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
}

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

.section-padding {
    padding: 9rem 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 6rem 0;
    }
}

.bg-light {
    background-color: var(--color-bg-light);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.align-center { align-items: center; }

/* Grid Layouts */
.grid {
    display: grid;
}

.gap-sm { gap: 1rem; }
.gap-md { gap: 2rem; }
.gap-lg { gap: 4rem; }

.grid-2-col { grid-template-columns: repeat(2, 1fr); }
.grid-3-col { grid-template-columns: repeat(3, 1fr); }
.grid-4-col { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-3-col, .grid-4-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2-col, .grid-3-col, .grid-4-col {
        grid-template-columns: 1fr;
    }
    .gap-lg { gap: 2.5rem; }
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.4rem;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-bg);
    border: 1px solid var(--color-black);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--color-black);
    border-color: var(--color-gold);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.2);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-black);
    border: 1px solid var(--color-gold-border);
}

.btn-outline:hover {
    border-color: var(--color-gold);
    background-color: var(--color-gold-glow);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 0.6rem 1.4rem;
    font-size: 0.7rem;
}

.btn-block {
    width: 100%;
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-gray-dark);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    font-weight: 600;
}

.btn-text .arrow {
    margin-left: 0.6rem;
    transition: var(--transition-fast);
}

.btn-text:hover {
    color: var(--color-gold);
}

.btn-text:hover .arrow {
    transform: translateY(3px);
}

/* HEADER & NAVIGATION */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--color-header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.06);
    transition: var(--transition-smooth);
}

.main-header.scrolled {
    padding: 0.3rem 0;
    background-color: var(--color-header-scrolled-bg);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    border-bottom-color: rgba(212, 175, 55, 0.12);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.4rem 4%;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-svg {
    width: 38px;
    height: 38px;
    transition: var(--transition-smooth);
}

.logo-link:hover .logo-svg {
    transform: rotate(5deg) scale(1.05);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    letter-spacing: 0.25em;
    color: var(--color-black);
    font-weight: 300;
}

/* Nav Menu */
.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--color-gray);
    position: relative;
    padding: 0.3rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 1px;
    background-color: var(--color-gold);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-black);
}

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

/* Header Actions & Unified Switchers */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

/* Language Segmented Control */
.language-switcher {
    position: relative;
    display: inline-flex;
    background: var(--color-gray-light);
    border: 1px solid var(--color-gold-border);
    border-radius: 30px;
    padding: 2px;
    height: 34px;
    align-items: center;
    width: 80px;
    box-sizing: border-box;
    transition: var(--transition-fast);
}

.lang-btn {
    position: relative;
    z-index: 2;
    flex: 1;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-gray);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.lang-btn.active {
    color: #000000; /* Black text on gold slider */
}

[data-theme="light"] .lang-btn.active {
    color: #FFFFFF; /* White text on gold slider in light mode */
}

.lang-slider-bg {
    position: absolute;
    top: 2px;
    bottom: 2px;
    left: 2px;
    width: calc(50% - 2px);
    background: var(--color-gold);
    border-radius: 30px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1;
    box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3);
}

.language-switcher.en-active .lang-slider-bg {
    transform: translateX(100%);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 1px solid var(--color-gold-border);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-black);
    transition: var(--transition-smooth);
    width: 34px;
    height: 34px;
    outline: none;
}

.theme-toggle:hover {
    border-color: var(--color-gold);
    background-color: var(--color-gold-glow);
    transform: rotate(12deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}
:root:not([data-theme="dark"]) .theme-toggle .sun-icon {
    display: none;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-black);
    position: relative;
    transition: var(--transition-fast);
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--color-black);
    left: 0;
    transition: var(--transition-fast);
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }

.mobile-nav-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

@media (max-width: 900px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-bg-light);
        box-shadow: -10px 0 40px rgba(0,0,0,0.3);
        z-index: 999;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition-smooth);
        border-left: 1px solid var(--color-gold-border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }
    
    .nav-link {
        font-size: 1.1rem;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .header-actions .btn-outline {
        display: none;
    }
}

/* HERO SECTION */
.hero-section {
    min-height: 95vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 120px;
    background-color: var(--color-bg);
    overflow: hidden;
}

.hero-background-art {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-logo-img {
    width: 100%;
    max-width: 440px;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
    filter: invert(1) hue-rotate(180deg) brightness(1.2) contrast(1.2);
    mix-blend-mode: screen;
    animation: float 7s ease-in-out infinite;
}

[data-theme="light"] .hero-logo-img {
    filter: none;
    mix-blend-mode: multiply;
}

.logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    filter: invert(1) hue-rotate(180deg) brightness(1.2) contrast(1.2);
    mix-blend-mode: screen;
    transition: var(--transition-smooth);
}

[data-theme="light"] .logo-img {
    filter: none;
    mix-blend-mode: multiply;
}

.hero-glow-underlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-gold-glow) 0%, transparent 65%);
    pointer-events: none;
    z-index: 1;
}

.hero-container {
    z-index: 2;
    position: relative;
}

.hero-tagline {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.35em;
    color: var(--color-gold);
    font-weight: 600;
    display: block;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4rem;
    max-width: 750px;
    margin-bottom: 2rem;
    font-weight: 300;
    color: var(--color-black);
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.15rem;
    max-width: 580px;
    color: var(--color-gray);
    margin-bottom: 3.5rem;
    font-weight: 300;
    line-height: 1.75;
}

.hero-ctas {
    display: flex;
    align-items: center;
    gap: 2rem;
}

@media (max-width: 900px) {
    .hero-section {
        min-height: auto;
        padding: 9rem 0 6rem 0;
        text-align: center;
        flex-direction: column;
    }
    
    .hero-background-art {
        position: relative;
        width: 100%;
        height: 320px;
        margin-top: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
        margin: 0 auto 1.5rem auto;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin: 0 auto 2.5rem auto;
    }
    
    .hero-ctas {
        flex-direction: column;
        gap: 1.2rem;
    }
}

/* Floating Gem animation */
@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(1.5deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.floating-gem {
    transform-origin: center;
    animation: float 7s ease-in-out infinite;
}

/* GLASS PANEL & CARDS */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
}

/* PROJECT SECTION */
.project-section {
    position: relative;
    border-top: 1px solid var(--color-gray-light);
}

.section-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--color-gold-dark);
    font-weight: 600;
    display: block;
    margin-bottom: 1.2rem;
}

.section-title {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    font-weight: 300;
    color: var(--color-black);
}

.lead-text {
    font-size: 1.2rem;
    line-height: 1.75;
    color: var(--color-black);
    margin-bottom: 2rem;
    font-weight: 400;
}

.body-text {
    font-size: 0.95rem;
    color: var(--color-gray);
    margin-bottom: 3rem;
}

.infrastructure-highlights {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.highlight-item {
    display: flex;
    gap: 1.4rem;
}

.highlight-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-gold-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold-dark);
    background-color: var(--color-bg-light);
}

.highlight-item h3 {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 0.4rem;
}

.highlight-item p {
    font-size: 0.85rem;
    color: var(--color-gray);
    margin-bottom: 0;
}

/* Elegant visual panel with ellipses */
.project-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 480px;
}

.gold-ellipse-container {
    position: relative;
    width: 320px;
    height: 420px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ellipse-outline {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid var(--color-gold-border);
    border-radius: 50% / 40%;
    pointer-events: none;
    transform: rotate(-5deg);
}

.ellipse-outline.dashed {
    border-style: dashed;
    border-width: 0.75px;
    transform: scale(1.06) rotate(6deg);
    opacity: 0.6;
}

.visual-card {
    position: relative;
    width: 270px;
    height: 370px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: 0 25px 50px rgba(0,0,0,0.1);
    padding: 2.2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    border-radius: 8px;
    overflow: hidden;
    z-index: 2;
    transition: var(--transition-smooth);
}

.visual-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.gem-wireframe {
    width: 160px;
    height: 160px;
    margin-top: 2rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.rotating-gem-svg {
    animation: spin 40s linear infinite;
}

.visual-card-text {
    text-align: center;
    z-index: 2;
}

.card-caption {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--color-gold-dark);
    font-weight: 600;
    display: block;
    margin-bottom: 0.4rem;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--color-black);
}

@media (max-width: 768px) {
    .project-visual {
        min-height: auto;
        margin-top: 3rem;
    }
}

/* STRATEGIC PILLARS SECTION */
.tech-section {
    border-top: 1px solid var(--color-gray-light);
    border-bottom: 1px solid var(--color-gray-light);
}

.section-header {
    margin-bottom: 6rem;
}

.section-description {
    font-size: 1.15rem;
    color: var(--color-gray);
    max-width: 600px;
    margin: 1.5rem auto 0 auto;
    font-weight: 300;
}

.metric-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: 3.5rem 2.5rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metric-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-gold);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 45px rgba(212, 175, 55, 0.08);
    border-color: rgba(212, 175, 55, 0.4);
}

.metric-card:hover::before {
    width: 60%;
}

.metric-icon {
    width: 44px;
    height: 44px;
    color: var(--color-gold);
    margin-bottom: 2rem;
    opacity: 0.9;
}

.metric-title {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-black);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.metric-desc {
    font-size: 0.85rem;
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 0;
}

/* POTENTIAL REGIONAL SECTION */
.potential-section {
    border-bottom: 1px solid var(--color-gray-light);
}

.potential-grid {
    margin-bottom: 5rem;
}

.potential-card {
    background: var(--color-bg-light);
    color: var(--color-gray-dark);
    padding: 3.5rem 2.8rem;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-gold-border);
    transition: var(--transition-smooth);
}

.card-border-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 1px solid var(--color-gold);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
    border-radius: 8px;
}

.potential-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-gold);
    box-shadow: 0 20px 45px rgba(212, 175, 55, 0.1);
}

.potential-card:hover .card-border-glow {
    opacity: 0.5;
}

.potential-card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 2.2rem;
    border-bottom: 1px solid rgba(212, 175, 55, 0.15);
    padding-bottom: 1.2rem;
}

.metal-symbol {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--color-gold);
    font-weight: 600;
}

.metal-title {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    color: var(--color-black);
    font-weight: 600;
}

.metal-desc {
    font-size: 0.88rem;
    line-height: 1.65;
    color: var(--color-gray);
    margin-bottom: 0;
}

/* Geological Box Info */
.geological-box {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-left: 3px solid var(--color-gold);
    padding: 3rem;
    border-radius: 4px;
    max-width: var(--container-medium-width);
    margin: 0 auto;
}

.geological-box-content h3 {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gold-dark);
    margin-bottom: 1rem;
}

.geological-box-content p {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    color: var(--color-black);
    line-height: 1.65;
    margin-bottom: 0;
}

/* CONTACT & APPLICATIONS FORM */
.contact-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: 0 30px 70px rgba(0,0,0,0.15);
    padding: 5rem 4rem;
    border-radius: 8px;
    border-top: 3px solid var(--color-gold);
}

@media (max-width: 768px) {
    .contact-card {
        padding: 2.5rem 1.8rem;
    }
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin: 0.8rem 0;
}

.form-group-checkbox input {
    margin-top: 0.4rem;
    accent-color: var(--color-gold);
}

.form-group-checkbox label {
    font-size: 0.8rem;
    color: var(--color-gray);
    line-height: 1.5;
}

.form-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
    color: var(--color-black);
}

/* Underline-Only Inputs */
.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 0.9rem 0;
    border: none;
    border-bottom: 1px solid var(--color-gray-light);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    border-radius: 0;
    outline: none;
    transition: var(--transition-fast);
    background-color: transparent;
    color: var(--color-black);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-bottom-color: var(--color-gold);
    box-shadow: none;
}

.form-group input::placeholder, 
.form-group textarea::placeholder {
    color: var(--color-gray);
    opacity: 0.6;
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background-color: var(--color-bg-light);
    color: var(--color-black);
}

/* Feedback Messages */
.form-feedback {
    font-size: 0.85rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
    text-align: center;
}

.form-feedback.success {
    display: block;
    background-color: rgba(46, 125, 50, 0.1);
    color: #4caf50;
    border: 1px solid rgba(46, 125, 50, 0.2);
}

.form-feedback.error {
    display: block;
    background-color: rgba(198, 40, 40, 0.1);
    color: #f44336;
    border: 1px solid rgba(198, 40, 40, 0.2);
}

/* FOOTER */
.main-footer {
    background-color: var(--color-bg);
    color: var(--color-gray);
    padding: 6rem 0 4rem 0;
    border-top: 1px solid var(--color-gray-light);
}

.footer-top {
    padding-bottom: 4rem;
    border-bottom: 1px solid var(--color-gray-light);
}

.sello-origen {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    letter-spacing: 0.25em;
    color: var(--color-black);
    display: block;
    font-weight: 500;
}

.sello-pais {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--color-gold);
    display: block;
    margin-top: 0.4rem;
}

.footer-logo-svg {
    margin: 0 auto 1rem auto;
}

.footer-company-name {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    letter-spacing: 0.22em;
    color: var(--color-black);
}

.phone-link {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--color-black);
    font-weight: 500;
}

.phone-icon-wrapper {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--color-gold-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gold-dark);
}

.phone-link:hover {
    color: var(--color-gold);
}

.phone-link:hover .phone-icon-wrapper {
    background-color: var(--color-gold-glow);
    border-color: var(--color-gold);
}

.footer-bottom {
    padding-top: 2.5rem;
}

.copyright {
    font-size: 0.75rem;
    color: var(--color-gray);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .footer-top {
        text-align: center;
        gap: 3rem;
    }
    
    .footer-origin, .footer-phone {
        text-align: center;
    }
}

/* DATA ROOM MODAL */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    padding: 3.5rem;
    position: relative;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.5);
    border-top: 4px solid var(--color-gold);
    transform: translateY(40px);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-gray);
    transition: var(--transition-fast);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-black);
}

.modal-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.modal-logo-icon {
    display: flex;
    justify-content: center;
    margin-bottom: 1.2rem;
}

.modal-header h3 {
    font-size: 1.7rem;
    margin-bottom: 0.6rem;
    color: var(--color-black);
}

.modal-header p {
    font-size: 0.88rem;
    color: var(--color-gray);
    margin-bottom: 0;
}

.modal-body form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ANIMATIONS */
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* 14. EXTRA SMALL DEVICES RESPONSIVENESS */
@media (max-width: 600px) {
    .logo-text {
        display: none;
    }
    .header-container {
        padding: 1.2rem 4%;
    }
    .header-actions {
        gap: 0.6rem;
    }
    .language-switcher {
        width: 72px;
        height: 30px;
    }
    .lang-btn {
        font-size: 0.65rem;
    }
    .theme-toggle {
        width: 30px;
        height: 30px;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }
}