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

:root {
    --black: #000000;
    --bg-dark: #050508;
    --bg-card: #0a0a0f;
    --bg-card-hover: #111118;
    --white: #ffffff;
    --gray-100: #f0f0f0;
    --gray-200: #d0d0d0;
    --gray-300: #a0a0a0;
    --gray-400: #707070;
    --gray-500: #505050;
    --gray-600: #303035;
    --gray-700: #1a1a1f;
    --gray-800: #101015;
    --neon-cyan: #00F0FF;
    --neon-green: #00FF41;
    --neon-blue: #0066FF;
    --gradient-1: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue));
    --gradient-2: linear-gradient(135deg, var(--neon-green), var(--neon-cyan));
    --gradient-text: linear-gradient(135deg, var(--neon-cyan), var(--neon-green));
    --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
    --shadow-glow-green: 0 0 20px rgba(0, 255, 65, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 5, 8, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

header.scrolled {
    background: rgba(5, 5, 8, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

header nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
}

.logo span {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--gray-300);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--neon-cyan);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-switch {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-card);
    padding: 0.25rem;
    border-radius: 8px;
}

.lang-switch button {
    background: transparent;
    border: none;
    color: var(--gray-400);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.lang-switch button.active {
    background: var(--gradient-1);
    color: var(--black);
}

.lang-switch button:hover:not(.active) {
    color: var(--neon-cyan);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--black);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--neon-cyan);
    border: 2px solid var(--neon-cyan);
}

.btn-secondary:hover {
    background: rgba(0, 240, 255, 0.1);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(0, 240, 255, 0.1), transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 700px;
    z-index: 1;
    position: relative;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--neon-cyan);
    border-radius: 20px;
    color: var(--neon-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

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

.stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray-400);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Sections */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-dark {
    background: var(--bg-card);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-label {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--neon-cyan);
    border-radius: 20px;
    color: var(--neon-cyan);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-cyan);
    box-shadow: var(--shadow-glow);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--white);
}

.card h4 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.card p {
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.card-meta {
    color: var(--neon-cyan);
    font-weight: 600;
    font-size: 0.9rem;
}

.card-sm {
    padding: 1.5rem;
    text-align: center;
}

/* Grids */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.scenario-item {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-300);
}

.scenario-item:last-child {
    border-bottom: none;
}

.scenario-item.result {
    color: var(--neon-green);
    border-color: rgba(0, 255, 65, 0.3);
}

.scenario-item strong {
    color: var(--white);
    display: block;
    margin-bottom: 0.5rem;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    position: relative;
}

.case-card.featured {
    border-color: var(--neon-green);
    box-shadow: var(--shadow-glow-green);
}

.case-year {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-1);
    color: var(--black);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
}

.case-result {
    background: rgba(0, 255, 65, 0.1);
    border-left: 3px solid var(--neon-green);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
    color: var(--neon-green);
    font-weight: 500;
}

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 1rem 0;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info p {
    color: var(--gray-300);
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--gray-300);
}

.contact-icon {
    font-size: 1.5rem;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--white);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--gray-500);
}

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

/* Footer */
footer {
    background: var(--bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--gray-400);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .mobile-toggle {
        display: flex;
    }

    .header-actions {
        gap: 0.5rem;
    }

    .btn-sm {
        display: none;
    }

    .hero {
        padding-top: 100px;
        text-align: center;
    }

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

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

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .solutions-grid,
    .scenarios-grid,
    .industries-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .section {
        padding: 4rem 0;
    }

    .card {
        padding: 1.5rem;
    }
}

/* Page Hero */
.page-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, rgba(0,240,255,0.05), transparent);
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--gray-400);
    margin-top: 1rem;
}

/* Solution Cards */
.solutions-list, .scenarios-list, .industries-list, .cases-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.solution-card, .scenario-card, .industry-card, .case-detail {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.solution-card:hover, .scenario-card:hover, .industry-card:hover, .case-detail:hover {
    border-color: var(--neon-cyan);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.solution-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.solution-icon, .scenario-icon, .industry-icon {
    font-size: 3rem;
}

.solution-power, .industry-power {
    color: var(--neon-cyan);
    font-weight: 600;
}

.solution-section, .industry-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.solution-section h4, .industry-section h4 {
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.solution-footer {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.solution-warranty {
    color: var(--neon-green);
}

/* Scenario Cards */
.scenario-block {
    margin: 1.5rem 0;
    padding: 1rem;
    border-radius: 8px;
}

.scenario-block.problem {
    background: rgba(255,100,100,0.1);
    border-left: 3px solid rgba(255,100,100,0.5);
}

.scenario-block.solution {
    background: rgba(0,240,255,0.1);
    border-left: 3px solid var(--neon-cyan);
}

.scenario-block.result {
    background: rgba(0,255,65,0.1);
    border-left: 3px solid var(--neon-green);
}

.scenario-block h4 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.scenario-examples {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(0,240,255,0.05);
    border-radius: 8px;
}

.scenario-examples h4 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

/* Case Detail */
.case-detail {
    position: relative;
}

.case-detail.featured {
    border-color: var(--neon-green);
    background: linear-gradient(135deg, rgba(0,240,255,0.05), transparent);
}

.case-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-2);
    color: var(--black);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.case-header h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.75rem;
    font-weight: 600;
    flex: 1;
    min-width: 200px;
}

.case-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.case-year {
    background: var(--gray-700);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-weight: 600;
}

.case-power {
    color: var(--neon-cyan);
    font-weight: 600;
}

.case-client {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.case-content {
    display: grid;
    gap: 1rem;
}

.case-block {
    padding: 1rem;
    background: var(--gray-800);
    border-radius: 8px;
}

.case-block h4 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.case-block.result {
    background: rgba(0,255,65,0.1);
    border-left: 3px solid var(--neon-green);
}

/* CTA Section */
.section-cta {
    text-align: center;
    background: linear-gradient(135deg, rgba(0,240,255,0.1), rgba(0,255,65,0.05));
}

.section-cta h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-cta p {
    color: var(--gray-400);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Active nav link */
.nav-menu a.active {
    color: var(--neon-cyan);
}

.nav-menu a.active::after {
    width: 100%;
}

/* SVG Icons */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
}

.icon svg {
    width: 100%;
    height: 100%;
}

.icon-sm { font-size: 1rem; }
.icon-md { font-size: 1.5rem; }
.icon-lg { font-size: 2rem; }
.icon-xl { font-size: 3rem; }

.card-icon, .solution-icon, .scenario-icon, .industry-icon {
    font-size: 3rem;
    color: var(--neon-cyan);
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--neon-cyan);
}