/* =============================================
   Diana Mendiluza Díaz - FUTURISTIC WEBSITE
   Cyberpunk / Neon / Tech Aesthetic
   ============================================= */

/* CSS Custom Properties */
:root {
    /* Futuristic Neon Colors */
    --neon-cyan: #00f5ff;
    --neon-purple: #bf00ff;
    --neon-pink: #ff00a8;
    --neon-blue: #0066ff;
    --neon-green: #00ff88;

    /* Gradients */
    --gradient-main: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-neon: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-purple) 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0f 0%, #1a1a2e 50%, #0f0f1a 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* Dark Theme Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a2e;
    --color-bg-card: rgba(255, 255, 255, 0.03);

    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.4);

    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-glow: rgba(0, 245, 255, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Glows & Shadows */
    --glow-cyan: 0 0 20px rgba(0, 245, 255, 0.5), 0 0 40px rgba(0, 245, 255, 0.3), 0 0 60px rgba(0, 245, 255, 0.1);
    --glow-purple: 0 0 20px rgba(191, 0, 255, 0.5), 0 0 40px rgba(191, 0, 255, 0.3), 0 0 60px rgba(191, 0, 255, 0.1);
    --glow-pink: 0 0 20px rgba(255, 0, 168, 0.5), 0 0 40px rgba(255, 0, 168, 0.3);
    --shadow-dark: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    --shadow-glow: 0 0 30px rgba(0, 245, 255, 0.2);

    /* Transitions */
    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Animated Background Grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* Scanline Effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.1) 0px,
        rgba(0, 0, 0, 0.1) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
    opacity: 0.3;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Selection */
::selection {
    background: var(--neon-cyan);
    color: var(--color-bg-primary);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
    border-radius: 4px;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

/* Glowing Text Effect */
.glow-text {
    text-shadow:
        0 0 10px var(--neon-cyan),
        0 0 20px var(--neon-cyan),
        0 0 40px var(--neon-cyan);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 0.9375rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-neon);
    color: var(--color-bg-primary);
    border: none;
    box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        var(--glow-cyan),
        0 10px 40px rgba(0, 245, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-cyan);
    border: 1px solid var(--neon-cyan);
    box-shadow: inset 0 0 20px rgba(0, 245, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(0, 245, 255, 0.1);
    box-shadow:
        inset 0 0 20px rgba(0, 245, 255, 0.2),
        var(--glow-cyan);
    transform: translateY(-3px);
}

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

.btn-outline:hover {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    box-shadow: var(--glow-cyan);
}

.btn-block {
    width: 100%;
}

/* =============================================
   Navigation - Futuristic Glass
   ============================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.95);
    border-bottom-color: var(--neon-cyan);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-neon);
    transition: width var(--transition-base);
    box-shadow: var(--glow-cyan);
}

.nav-link:hover,
.nav-link.active {
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

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

.nav-cta {
    background: var(--gradient-neon);
    color: var(--color-bg-primary) !important;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
    box-shadow: var(--glow-cyan);
    text-shadow: none !important;
}

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

.nav-cta:hover {
    transform: scale(1.05);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--neon-cyan);
    transition: all var(--transition-fast);
    box-shadow: 0 0 10px var(--neon-cyan);
}

/* =============================================
   Hero Section - Cyberpunk Style
   ============================================= */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 100px;
    background: var(--gradient-dark);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    inset: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: pulse 8s ease-in-out infinite;
}

.shape-1 {
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 245, 255, 0.3) 0%, transparent 70%);
    top: -400px;
    right: -200px;
    animation: float 20s ease-in-out infinite, pulse 8s ease-in-out infinite;
}

.shape-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(191, 0, 255, 0.3) 0%, transparent 70%);
    bottom: -200px;
    left: -200px;
    animation: float 25s ease-in-out infinite reverse, pulse 10s ease-in-out infinite;
}

.shape-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 0, 168, 0.2) 0%, transparent 70%);
    top: 50%;
    left: 30%;
    animation: float 15s ease-in-out infinite, pulse 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(50px, -50px) rotate(120deg); }
    66% { transform: translate(-30px, 30px) rotate(240deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Animated particles */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(2px 2px at 20px 30px, var(--neon-cyan), transparent),
                      radial-gradient(2px 2px at 40px 70px, var(--neon-purple), transparent),
                      radial-gradient(1px 1px at 90px 40px, var(--neon-pink), transparent),
                      radial-gradient(2px 2px at 130px 80px, var(--neon-cyan), transparent),
                      radial-gradient(1px 1px at 160px 120px, var(--neon-purple), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: sparkle 20s linear infinite;
    opacity: 0.5;
    pointer-events: none;
}

@keyframes sparkle {
    from { transform: translateY(0); }
    to { transform: translateY(-200px); }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-xl);
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 0 20px var(--neon-cyan);
}

.hero-subtitle::before {
    content: '//';
    color: var(--neon-purple);
}

.hero-subtitle::after {
    content: '';
    width: 60px;
    height: 1px;
    background: var(--gradient-neon);
    box-shadow: var(--glow-cyan);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    line-height: 1;
    letter-spacing: -0.03em;
}

.hero-title span {
    display: block;
    background: linear-gradient(135deg, #fff 0%, var(--neon-cyan) 50%, var(--neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
    line-height: 1.8;
    border-left: 3px solid var(--neon-cyan);
    padding-left: var(--spacing-lg);
    box-shadow: inset 3px 0 20px rgba(0, 245, 255, 0.1);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image-wrapper {
    position: relative;
    width: 400px;
    height: 400px;
}

/* Rotating border effect */
.hero-image-wrapper::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: conic-gradient(from 0deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink), var(--neon-cyan));
    border-radius: var(--radius-2xl);
    animation: rotateBorder 4s linear infinite;
    z-index: -1;
}

.hero-image-wrapper::after {
    content: '';
    position: absolute;
    inset: -20px;
    border: 1px solid var(--color-border);
    border-radius: calc(var(--radius-2xl) + 17px);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes rotateBorder {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-2xl);
    position: relative;
    z-index: 1;
    filter: saturate(1.1);
}

/* Glitch effect on hover */
.hero-image-wrapper:hover .hero-photo {
    animation: glitch 0.3s ease infinite;
}

@keyframes glitch {
    0%, 100% { transform: translate(0); filter: saturate(1.1); }
    20% { transform: translate(-2px, 2px); filter: saturate(1.2) hue-rotate(10deg); }
    40% { transform: translate(2px, -2px); filter: saturate(0.9) hue-rotate(-10deg); }
    60% { transform: translate(-1px, 1px); filter: saturate(1.3); }
    80% { transform: translate(1px, -1px); filter: saturate(1); }
}

.hero-image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-neon);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
}

.hero-image-placeholder svg {
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-3xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--neon-cyan);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    animation: bounce 2s ease-in-out infinite;
    text-shadow: 0 0 10px var(--neon-cyan);
}

.scroll-indicator svg {
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* =============================================
   Section Styles - Tech Aesthetic
   ============================================= */
section {
    padding: var(--spacing-5xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-4xl);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 20px var(--neon-cyan);
}

.section-label::before,
.section-label::after {
    content: '—';
    color: var(--neon-purple);
}

.section-title {
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
}

/* =============================================
   About Section - Holographic Style
   ============================================= */
.about {
    background: var(--color-bg-secondary);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}

.about-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: var(--spacing-5xl);
    align-items: start;
}

.about-intro {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    letter-spacing: -0.01em;
}

.about-intro strong {
    color: var(--neon-cyan);
    font-weight: 600;
    text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
}

.about-text p {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

.about-highlights {
    margin-top: var(--spacing-3xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.highlight-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-neon);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.highlight-item:hover {
    border-color: var(--neon-cyan);
    box-shadow:
        0 0 30px rgba(0, 245, 255, 0.1),
        inset 0 0 30px rgba(0, 245, 255, 0.05);
    transform: translateX(10px);
}

.highlight-item:hover::before {
    transform: scaleY(1);
}

.highlight-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    color: var(--neon-cyan);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
}

.highlight-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.highlight-text p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--neon-cyan), transparent);
    animation: rotateBg 6s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 2px;
    background: var(--color-bg-secondary);
    border-radius: calc(var(--radius-xl) - 2px);
    z-index: 0;
}

.stat-card:hover {
    transform: translateY(-8px);
    border-color: var(--neon-cyan);
}

.stat-card:hover::before {
    opacity: 0.3;
}

@keyframes rotateBg {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.stat-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
    text-shadow: 0 0 40px rgba(0, 245, 255, 0.5);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* =============================================
   Services Section - Cyber Cards
   ============================================= */
.services {
    background: var(--color-bg-primary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-purple), transparent);
}

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

.service-card {
    position: relative;
    background: var(--gradient-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    overflow: hidden;
}

/* Animated border */
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-base);
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-cyan);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(0, 245, 255, 0.1),
        inset 0 0 40px rgba(0, 245, 255, 0.03);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card.featured {
    background: linear-gradient(145deg, rgba(0, 245, 255, 0.1) 0%, rgba(191, 0, 255, 0.1) 100%);
    border-color: rgba(0, 245, 255, 0.3);
}

.service-card.featured::before {
    opacity: 1;
}

.service-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--gradient-neon);
    color: var(--color-bg-primary);
    font-size: 0.625rem;
    font-weight: 700;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: var(--glow-cyan);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    color: var(--neon-cyan);
    transition: all var(--transition-base);
    position: relative;
}

.service-icon::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: calc(var(--radius-lg) + 5px);
    background: conic-gradient(from 0deg, transparent 70%, var(--neon-cyan) 100%);
    animation: rotateBorder 3s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--neon-cyan);
    color: var(--color-bg-primary);
    box-shadow: var(--glow-cyan);
}

.service-card:hover .service-icon::before {
    opacity: 1;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.service-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9375rem;
    line-height: 1.8;
}

.service-features {
    margin-bottom: var(--spacing-xl);
}

.service-features li {
    position: relative;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.service-features li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--neon-cyan);
    font-weight: bold;
    text-shadow: 0 0 10px var(--neon-cyan);
}

.service-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-base);
}

.service-cta::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.service-cta:hover {
    text-shadow: 0 0 20px var(--neon-cyan);
}

.service-cta:hover::after {
    transform: translateX(8px);
}

/* =============================================
   Publications Section - Data Stream
   ============================================= */
.publications {
    background: var(--color-bg-secondary);
    position: relative;
}

.publications::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-pink), transparent);
}

.publications-content {
    max-width: 900px;
    margin: 0 auto;
}

.publication-categories {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.pub-filter {
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.pub-filter:hover {
    color: var(--neon-cyan);
    border-color: var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.2);
}

.pub-filter.active {
    background: var(--gradient-neon);
    color: var(--color-bg-primary);
    border-color: transparent;
    box-shadow: var(--glow-cyan);
}

.publications-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.publication-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.publication-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-neon);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.publication-card:hover {
    border-color: var(--neon-cyan);
    transform: translateX(10px);
    box-shadow: 0 0 30px rgba(0, 245, 255, 0.1);
}

.publication-card:hover::before {
    transform: scaleY(1);
}

.publication-card.hidden {
    display: none;
}

.pub-type {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--neon-purple);
    background: rgba(191, 0, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 10px var(--neon-purple);
}

.pub-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.pub-meta {
    font-size: 0.8125rem;
    color: var(--neon-cyan);
    margin-bottom: var(--spacing-sm);
    opacity: 0.7;
}

.pub-excerpt {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0;
    line-height: 1.7;
}

.publications-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

/* =============================================
   Contact Section - Terminal Style
   ============================================= */
.contact {
    background: var(--color-bg-primary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
}

.contact .section-label {
    color: var(--neon-green);
    text-shadow: 0 0 20px var(--neon-green);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--spacing-5xl);
    align-items: start;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3xl);
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-green);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.contact-label {
    display: block;
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.contact-text a {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.contact-text a:hover {
    color: var(--neon-green);
    text-shadow: 0 0 20px var(--neon-green);
}

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

.social-link {
    width: 52px;
    height: 52px;
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: rgba(0, 245, 255, 0.1);
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    transform: translateY(-5px);
    box-shadow: var(--glow-cyan);
}

/* Terminal-style form */
.contact-form-wrapper {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.contact-form-wrapper::before {
    content: '● ● ●';
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.75rem;
    letter-spacing: 0.5em;
    color: var(--color-text-muted);
}

.contact-form {
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.form-group label::before {
    content: '> ';
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.3);
    color: var(--color-text);
    font-family: 'Courier New', monospace;
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group select {
    color: var(--color-text-secondary);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow:
        0 0 20px rgba(0, 255, 136, 0.2),
        inset 0 0 20px rgba(0, 255, 136, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    background: var(--neon-green);
    color: var(--color-bg-primary);
    border: none;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    margin-top: var(--spacing-md);
}

.contact-form .btn-primary:hover {
    box-shadow:
        0 0 30px rgba(0, 255, 136, 0.5),
        0 0 60px rgba(0, 255, 136, 0.3);
}

/* Form success state */
.form-success {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.form-success-icon {
    width: 80px;
    height: 80px;
    background: rgba(0, 255, 136, 0.1);
    border: 2px solid var(--neon-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-xl);
    color: var(--neon-green);
    box-shadow: var(--glow-cyan);
    animation: pulse 2s ease-in-out infinite;
}

.form-success h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.form-success p {
    color: var(--color-text-secondary);
}

/* =============================================
   Footer - Minimal Cyber
   ============================================= */
.footer {
    background: var(--color-bg-primary);
    color: var(--color-text-secondary);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink), var(--neon-cyan));
    background-size: 300% 100%;
    animation: gradientMove 5s linear infinite;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    font-size: 0.8125rem;
    margin-bottom: 0;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-links a {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    margin-bottom: 0;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* =============================================
   Scroll to Top Button - Neon
   ============================================= */
.scroll-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 52px;
    height: 52px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 0 20px rgba(0, 245, 255, 0.3),
        inset 0 0 20px rgba(0, 245, 255, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.8);
    transition: all var(--transition-base);
    z-index: 999;
}

.scroll-top svg {
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

.scroll-top:hover {
    background: var(--neon-cyan);
    color: var(--color-bg-primary);
    transform: translateY(-5px) scale(1);
    box-shadow:
        0 0 40px rgba(0, 245, 255, 0.5),
        0 0 80px rgba(0, 245, 255, 0.3);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-3xl);
    }

    .hero-subtitle::after {
        display: none;
    }

    .hero-tagline {
        margin-left: auto;
        margin-right: auto;
        border-left: none;
        border-bottom: 3px solid var(--neon-cyan);
        padding-left: 0;
        padding-bottom: var(--spacing-md);
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image-wrapper {
        width: 320px;
        height: 320px;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .about-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }

    .stat-card {
        flex: 1;
        min-width: 180px;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }
}

@media (max-width: 768px) {
    body::after {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 15, 0.98);
        flex-direction: column;
        justify-content: center;
        padding: var(--spacing-xl);
        gap: var(--spacing-2xl);
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu .nav-link {
        font-size: 1.5rem;
        color: var(--color-text);
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        min-height: auto;
        padding: 120px 0 var(--spacing-4xl);
    }

    .hero-image {
        order: -1;
    }

    .hero-image-wrapper {
        width: 250px;
        height: 250px;
    }

    .scroll-indicator {
        display: none;
    }

    section {
        padding: var(--spacing-4xl) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-3xl);
    }

    .about-stats {
        flex-direction: column;
    }

    .stat-card {
        min-width: auto;
    }

    .stat-number {
        font-size: 3rem;
    }

    .publication-categories {
        flex-direction: column;
        align-items: stretch;
    }

    .contact-form-wrapper::before {
        font-size: 0.625rem;
    }

    .contact-form {
        padding: var(--spacing-xl);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-lg);
    }

    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 48px;
        height: 48px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 3.5rem);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .highlight-item {
        flex-direction: column;
        text-align: center;
    }
}

/* =============================================
   Animations & Effects
   ============================================= */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Hero entrance animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-text > * {
    animation: fadeInUp 1s ease forwards;
    opacity: 0;
}

.hero-text > *:nth-child(1) { animation-delay: 0.2s; }
.hero-text > *:nth-child(2) { animation-delay: 0.4s; }
.hero-text > *:nth-child(3) { animation-delay: 0.6s; }
.hero-text > *:nth-child(4) { animation-delay: 0.8s; }

.hero-image {
    animation: fadeInUp 1s ease 0.5s forwards;
    opacity: 0;
}

/* Typing cursor effect for labels */
.section-label::after {
    content: '|';
    animation: blink 1s step-end infinite;
    margin-left: var(--spacing-sm);
    color: var(--neon-cyan);
}

@keyframes blink {
    50% { opacity: 0; }
}