/* ==========================================================================
   REVIZTECH BRAND DESIGN SYSTEM & STYLE SHEET
   ========================================================================== */

/* Custom Fonts & Variable Configuration */
:root {
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Transition Speeds */
    --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-normal: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-fluid: 1.2s cubic-bezier(0.16, 1, 0.3, 1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

/* Dark Theme (Default) */
.dark-theme {
    --bg-main: #09090b;
    --bg-secondary: #121217;
    --bg-offset: #181822;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);
    --accent-color: #a855f7;
    --accent-glow: rgba(168, 85, 247, 0.45);
    --accent-blue: #6366f1;
    --card-bg: rgba(18, 18, 23, 0.6);
    --card-glow-color: rgba(139, 92, 246, 0.1);
    --nav-bg: rgba(9, 9, 11, 0.85);
    --logo-filter: invert(0);
}

/* Light Theme */
.light-theme {
    --bg-main: #f4f4f5;
    --bg-secondary: #ffffff;
    --bg-offset: #e4e4e7;
    --text-primary: #09090b;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --border-color: rgba(9, 9, 11, 0.08);
    --border-hover: rgba(9, 9, 11, 0.16);
    --accent-color: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.35);
    --accent-blue: #06b6d4;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-glow-color: rgba(99, 102, 241, 0.05);
    --nav-bg: rgba(244, 244, 245, 0.85);
    --logo-filter: invert(1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    height: 100%;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100%;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
    transition: background var(--transition-fast);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Canvas Background */
#wave-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ==========================================================================
   INTRO SPLASH SCREEN
   ========================================================================== */
#splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #050507;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity var(--transition-slow) ease-in-out;
}

.splash-container {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.splash-svg {
    width: 150px;
    height: 150px;
    overflow: visible;
}

/* SVG stroke drawing keyframe animation */
.logo-path {
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    animation: drawLines 2.2s cubic-bezier(0.42, 0, 0.58, 1) forwards;
}

.right-loop {
    animation-delay: 0.3s;
}

/* Glow pulse animation when lines connect */
.splash-svg {
    animation: svgPulse 2.8s ease-in-out infinite alternate;
    animation-delay: 1.8s;
}

.splash-text-container {
    opacity: 0;
    transform: translateY(15px);
    animation: fadeInText 1.2s cubic-bezier(0.16, 1, 0.3, 1) 1.6s forwards;
}

.splash-brand-name {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: #ffffff;
    margin-bottom: 5px;
    text-shadow: 0 0 10px rgba(168, 85, 247, 0.4);
}

.splash-tagline {
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

@keyframes drawLines {
    0% {
        stroke-dashoffset: 600;
    }
    60% {
        stroke-dashoffset: 0;
        fill: rgba(255, 255, 255, 0);
    }
    100% {
        stroke-dashoffset: 0;
        fill: rgba(255, 255, 255, 0.03);
    }
}

@keyframes svgPulse {
    0% {
        transform: scale(1);
        filter: drop-shadow(0 0 5px var(--accent-glow));
    }
    100% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 20px var(--accent-glow)) drop-shadow(0 0 10px var(--accent-blue));
    }
}

@keyframes fadeInText {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Content hidden classes before splash animation completes */
.hidden-content {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.visible-content {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-normal), border-bottom var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.logo-wrapper {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
}

.brand-logo-img {
    width: 26px;
    height: 26px;
    object-fit: contain;
    filter: var(--logo-filter);
    transition: filter var(--transition-normal), transform var(--transition-fast);
}

.logo-link:hover .brand-logo-img {
    transform: scale(1.1) rotate(5deg);
}

.brand-name-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.15em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-item {
    font-family: var(--font-heading);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    position: relative;
    padding: 8px 0;
    transition: color var(--transition-fast);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Theme Toggle Button */
#theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    padding: 10px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

#theme-toggle-btn:hover {
    background-color: var(--bg-offset);
    border-color: var(--border-hover);
}

.sun-icon {
    display: none;
    width: 18px;
    height: 18px;
}

.moon-icon {
    display: block;
    width: 18px;
    height: 18px;
}

.light-theme .sun-icon {
    display: block;
}

.light-theme .moon-icon {
    display: none;
}

/* ==========================================================================
   BUTTONS & ACCENTS
   ========================================================================== */
.btn-primary {
    display: inline-block;
    padding: 14px 28px;
    background-color: var(--text-primary);
    color: var(--bg-main);
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    border: 1px solid var(--text-primary);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-primary-sm {
    display: inline-block;
    padding: 10px 18px;
    background-color: var(--text-primary);
    color: var(--bg-main);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    border: 1px solid var(--text-primary);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

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

.btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    background-color: transparent;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    background-color: rgba(168, 85, 247, 0.08);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 100px;
    color: var(--accent-color);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.light-theme .badge {
    background-color: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: var(--accent-color);
}

.gradient-text {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color) 70%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px 24px;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4.2rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

/* 3D Interactive Logo Elements */
.hero-logo-col {
    display: flex;
    justify-content: center;
    align-items: center;
}

.interactive-card-3d {
    width: 320px;
    height: 320px;
    perspective: 1200px;
    cursor: grab;
}

.interactive-card-3d:active {
    cursor: grabbing;
}

.card-inner-3d {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
    transition: transform 0.15s cubic-bezier(0.25, 1, 0.5, 1);
}

.card-bg-glow {
    position: absolute;
    top: 10%;
    left: 10%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    transform: translateZ(-30px);
    pointer-events: none;
    filter: blur(25px);
}

.card-glass-frame {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    transform-style: preserve-3d;
}

.diamond-grid-bg {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 1px dashed rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    pointer-events: none;
    transform: translateZ(10px);
}

.interactive-logo-wrapper {
    width: 160px;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateZ(65px);
}

.logo-3d-canvas-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.logo-3d-canvas-container canvas {
    width: 100% !important;
    height: 100% !important;
    outline: none;
    display: block;
}

.floating-tag {
    position: absolute;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.4);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}

.tag-top {
    top: 30px;
    left: -15px;
    transform: translateZ(80px);
}

.tag-bottom {
    bottom: 30px;
    right: -15px;
    transform: translateZ(85px);
}

@keyframes floatLogo {
    0% {
        transform: translateY(-8px) rotateY(-4deg);
    }
    100% {
        transform: translateY(8px) rotateY(4deg);
    }
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.7;
}

.scroll-dot {
    width: 6px;
    height: 16px;
    border: 2px solid var(--text-primary);
    border-radius: 10px;
    position: relative;
}

.scroll-dot::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 50%;
    width: 2px;
    height: 4px;
    background-color: var(--text-primary);
    border-radius: 50%;
    transform: translateX(-50%);
    animation: scrollAnimation 1.8s ease-in-out infinite;
}

.scroll-text {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

@keyframes scrollAnimation {
    0% {
        top: 2px;
        opacity: 1;
    }
    80% {
        top: 8px;
        opacity: 0;
    }
    100% {
        top: 2px;
        opacity: 0;
    }
}

/* ==========================================================================
   REVEAL ON SCROLL FRAMEWORK
   ========================================================================== */
.card-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

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

/* ==========================================================================
   ECOSYSTEM / BRAND SECTIONS
   ========================================================================== */
.section-container {
    padding: 100px 24px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-header {
    margin-bottom: 60px;
    max-width: 600px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Ecosystem Cards */
.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.ecosystem-card {
    display: block;
    text-decoration: none;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.ecosystem-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15), 0 0 30px var(--card-glow-color);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--card-glow-color) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.ecosystem-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.card-diamond-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.card-title-badge {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-main);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 32px;
    flex-grow: 1;
}

.card-footer-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: auto;
    cursor: pointer;
}

.arrow-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.ecosystem-card:hover .arrow-icon {
    transform: translateX(5px);
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.bg-offset {
    background-color: var(--bg-secondary);
    max-width: 100%;
    padding-left: calc((100vw - 1200px)/2 + 24px);
    padding-right: calc((100vw - 1200px)/2 + 24px);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 50px;
    backdrop-filter: blur(10px);
    transition: border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1), 0 0 25px var(--card-glow-color);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.15);
    border-radius: var(--radius-md);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.light-theme .service-icon {
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: var(--accent-color);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.service-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 30px;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==========================================================================
   ABOUT BRAND SPECIFICATIONS
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.about-lead {
    font-size: 1.6rem;
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-primary);
    border-left: 3px solid var(--accent-color);
    padding-left: 20px;
    margin-bottom: 30px;
}

.pillars-list {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.pillar-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.pillar-char {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--accent-color);
    min-width: 55px;
    text-align: center;
}

.pillar-item h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.pillar-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Brand Spec Sheet Graphic */
.brand-spec-sheet {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    backdrop-filter: blur(10px);
}

.spec-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-color);
}

.spec-row:last-of-type {
    border-bottom: none;
}

.spec-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.spec-val {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
}

.spec-diagram {
    margin-top: 40px;
    height: 180px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.spec-diamond {
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-color);
    transform: rotate(45deg);
}

.spec-diamond.d-1 {
    left: calc(50% - 40px);
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.spec-diamond.d-2 {
    left: calc(50% - 20px);
    border-color: var(--accent-blue);
    opacity: 0.7;
}

.spec-lines-connect {
    position: absolute;
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--text-primary), transparent);
    animation: scannerLine 3s ease-in-infinite;
}

@keyframes scannerLine {
    0% { transform: translateY(-70px); opacity: 0; }
    10% { opacity: 0.8; }
    90% { opacity: 0.8; }
    100% { transform: translateY(70px); opacity: 0; }
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.contact-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
    opacity: 0.15;
    pointer-events: none;
}

.contact-inner {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    padding: 60px;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 20px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 1.05rem;
}

.detail-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-color);
}

.contact-email-link {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1.5px solid var(--accent-color);
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.contact-email-link:hover {
    color: var(--accent-color);
    border-color: var(--text-primary);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(168, 85, 247, 0.15);
}

.light-theme .form-group input:focus,
.light-theme .form-group textarea:focus {
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
#main-footer {
    background-color: var(--bg-main);
    border-top: 1px solid var(--border-color);
    padding: 80px 24px 40px 24px;
    z-index: 1;
    position: relative;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 0.15em;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-links-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-group-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.footer-links-group a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-links-group a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-meta a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-meta a:hover {
    color: var(--text-primary);
}

.bullet {
    font-size: 0.6rem;
    color: var(--border-hover);
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
    .hero-content {
        gap: 40px;
    }
    .about-grid {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    .hero-text-col {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-logo-col {
        order: -1;
    }
    .nav-links {
        display: none; /* simple stack can be toggled, but static standard is standard */
    }
    .ecosystem-grid {
        grid-template-columns: 1fr;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .about-visual-col {
        order: -1;
    }
    .contact-inner {
        grid-template-columns: 1fr;
        padding: 40px;
        gap: 40px;
    }
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.8rem;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }
    .footer-container {
        grid-template-columns: 1fr;
    }
}