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

html {
    scroll-behavior: smooth;
}

:root {
    --primary-color: #0b5ed7;
    --primary-dark: #003366;
    --secondary-color: #0f2f57;
    --accent-color: #00aaff;
    --surface: #ffffff;
    --surface-muted: #f4f6fb;
    --surface-dark: #06172c;
    --text-strong: #111827;
    --text-body: #374151;
    --text-muted: #6b7280;
    --border-color: rgba(17, 24, 39, 0.08);
    --shadow-sm: 0 6px 24px rgba(15, 47, 87, 0.08);
    --shadow-md: 0 16px 40px rgba(15, 47, 87, 0.12);
    --shadow-lg: 0 30px 80px rgba(6, 23, 44, 0.16);
    --spacing-2xs: 0.5rem;
    --spacing-xs: 0.75rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --max-content-width: 1200px;
}

[data-theme="dark"] {
    --primary-color: #1e90ff;
    --primary-dark: #0066cc;
    --secondary-color: #1a3a5c;
    --accent-color: #00d4ff;
    --surface: #0f1419;
    --surface-muted: #1a1f26;
    --surface-dark: #0a0e13;
    --text-strong: #e4e9f0;
    --text-body: #b8c5d6;
    --text-muted: #8492a6;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 6px 24px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.6);
}

body {
    font-family: 'Noto Sans KR', 'Montserrat', sans-serif;
    font-size: 16px;
    color: var(--text-body);
    background: var(--surface-muted);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body.nav-open {
    overflow: hidden;
}

/* Performance optimizations */
* {
    will-change: auto;
}

.hero,
.scroll-progress,
.theme-toggle {
    will-change: transform;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(0, 170, 255, 0.45);
    outline-offset: 3px;
    border-radius: 6px;
}

/* Scroll Progress Indicator */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    z-index: 9999;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--accent-color);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-lg);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    color: var(--text-strong);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.theme-toggle .sun-icon {
    position: absolute;
    opacity: 1;
}

.theme-toggle .moon-icon {
    position: absolute;
    opacity: 0;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 1rem;
    background: var(--primary-dark);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    z-index: 999;
    transition: left var(--transition-base);
}

.skip-link:focus {
    left: 1rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-spacing {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-strong);
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    max-width: 680px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    margin: var(--spacing-xs) auto 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    font-weight: 600;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.18);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid rgba(11, 94, 215, 0.4);
    box-shadow: none;
}

.btn-outline:hover {
    transform: translateY(-2px);
    background: rgba(11, 94, 215, 0.12);
}

[data-theme="dark"] .btn-outline {
    color: #fff;
    border-color: rgba(30, 144, 255, 0.5);
    background: rgba(30, 144, 255, 0.08);
}

[data-theme="dark"] .btn-outline:hover {
    background: rgba(30, 144, 255, 0.2);
}

.btn-block {
    width: 100%;
}

.btn .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out forwards;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.title-highlight {
    color: var(--accent-color);
}

.reveal-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: padding var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 20, 25, 0.85);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--spacing-lg);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-brand {
    display: flex;
    flex-direction: column;
}

.logo {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

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

.nav-link {
    font-weight: 500;
    color: var(--text-body);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 0;
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    transition: width var(--transition-base);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    border: none;
    background: transparent;
    cursor: pointer;
}

.hamburger span:not(.sr-only) {
    width: 26px;
    height: 3px;
    background: var(--text-body);
    border-radius: 999px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.is-active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.hamburger.is-active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    background: url('images/hero-bg.jpg') center/cover no-repeat, var(--primary-dark);
    color: #fff;
    background-position: center calc(var(--hero-parallax, 0px));
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 23, 44, 0.92), rgba(11, 94, 215, 0.55));
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 75% 20%, rgba(0, 170, 255, 0.3), transparent 60%);
}

.hero-content {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 700px;
    z-index: 1;
}

.hero-eyebrow {
    text-transform: uppercase;
    letter-spacing: 4px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.hero-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2.6rem, 4vw, 3.6rem);
    line-height: 1.2;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 28px;
    height: 48px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 20px;
    position: relative;
}

.mouse::after {
    content: "";
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    animation: scroll 1.6s infinite;
}

@keyframes scroll {
    0% { opacity: 0; transform: translate(-50%, 0); }
    30% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, 16px); }
}

/* About */
.about-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-text h3 {
    font-size: 1.6rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-strong);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
}

.company-info {
    margin-top: var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-sm);
}

.info-item {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.info-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
}

.info-value {
    font-weight: 600;
    color: var(--text-strong);
}

.about-features {
    display: grid;
    gap: var(--spacing-sm);
}

.feature-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--primary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

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

.feature-icon {
    font-size: 2rem;
}

/* Capabilities */
.capability-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.capability-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(11, 94, 215, 0.08);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.capability-card h3 {
    font-size: 1.35rem;
    color: var(--primary-dark);
}

.capability-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    color: var(--text-muted);
}

.capability-card ul li::before {
    content: "•";
    color: var(--accent-color);
    margin-right: 0.5rem;
}

/* Services */
.services {
    background: var(--surface);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--surface-muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 102, 204, 0.12), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(11, 94, 215, 0.15);
    border-radius: 16px;
    color: var(--primary-dark);
}

.service-icon svg {
    width: 28px;
    height: 28px;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(0, 102, 204, 0.12);
    color: var(--primary-dark);
}

/* Portfolio */
.portfolio {
    background: var(--surface-muted);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.portfolio-image {
    position: relative;
    padding-top: 70%;
    background: linear-gradient(135deg, rgba(10, 30, 60, 0.85), rgba(0, 170, 255, 0.5));
}

.portfolio-item:nth-child(2) .portfolio-image {
    background: linear-gradient(135deg, rgba(15, 47, 87, 0.9), rgba(0, 204, 255, 0.46));
}

.portfolio-item:nth-child(3) .portfolio-image {
    background: linear-gradient(135deg, rgba(7, 64, 118, 0.9), rgba(0, 170, 255, 0.42));
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    color: #fff;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 30%, rgba(6, 23, 44, 0.85));
    gap: 0.5rem;
}

.portfolio-overlay h4 {
    font-size: 1.2rem;
    font-weight: 600;
}

/* Insights */
.insights {
    background: var(--surface);
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.insight-card {
    background: var(--surface-muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.insight-quote {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-body);
    position: relative;
}

.insight-quote::before {
    content: "“";
    font-size: 3rem;
    color: var(--accent-color);
    line-height: 0;
    position: absolute;
    top: -1rem;
    left: -0.5rem;
}

.insight-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.certification-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--text-body);
}

.certification-list li::before {
    content: "✔";
    color: var(--accent-color);
    margin-right: 0.5rem;
}

/* Stats */
.stats {
    background: var(--surface-dark);
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stat-item {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
}

.stat-suffix {
    font-size: 1.5rem;
    margin-top: -0.75rem;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1rem;
}

/* CTA */
.cta {
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.95), rgba(0, 170, 255, 0.85));
    color: #fff;
}

.cta-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-md);
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Contact */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: var(--spacing-xl);
}

.info-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.info-card h4 {
    font-size: 1.1rem;
    color: var(--primary-dark);
}

.info-card a {
    color: var(--primary-color);
    word-break: break-all;
}

.info-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.chip-button {
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
    background: rgba(255, 255, 255, 0.75);
    color: var(--primary-dark);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.chip-button:hover {
    background: rgba(11, 94, 215, 0.12);
    border-color: rgba(11, 94, 215, 0.25);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.chip-button.chip-primary,
.chip-button.is-success {
    background: rgba(11, 94, 215, 0.15);
    border-color: rgba(11, 94, 215, 0.35);
    color: var(--primary-color);
}

.chip-button.is-success {
    transform: none;
}

[data-theme="dark"] .chip-button {
    background: rgba(15, 47, 87, 0.4);
    color: var(--text-body);
}

[data-theme="dark"] .chip-button:hover {
    background: rgba(30, 144, 255, 0.2);
    color: #fff;
    border-color: rgba(30, 144, 255, 0.5);
}

[data-theme="dark"] .chip-button.chip-primary,
[data-theme="dark"] .chip-button.is-success {
    background: rgba(30, 144, 255, 0.32);
    color: #fff;
    border-color: rgba(30, 144, 255, 0.55);
}

.contact-tip {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
    line-height: 1.45;
}

.contact-form {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: grid;
    gap: var(--spacing-sm);
}

.form-actions {
    display: grid;
    gap: 0.75rem;
}

@media (min-width: 640px) {
    .form-actions {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .form-actions .btn-primary {
        grid-column: span 2;
    }
}

.form-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.form-status {
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    font-size: 0.92rem;
    border: 1px solid rgba(11, 94, 215, 0.18);
    background: rgba(11, 94, 215, 0.08);
    color: var(--primary-dark);
    transition: opacity var(--transition-base);
}

.form-status[data-status="success"] {
    background: rgba(46, 204, 113, 0.18);
    border-color: rgba(46, 204, 113, 0.35);
    color: #1a7f47;
}

.form-status[data-status="error"] {
    background: rgba(255, 99, 71, 0.2);
    border-color: rgba(255, 99, 71, 0.45);
    color: #9f2a2a;
}

.form-status[hidden] {
    display: none;
}

[data-theme="dark"] .contact-tip,
[data-theme="dark"] .form-hint {
    color: rgba(209, 222, 239, 0.8);
}

[data-theme="dark"] .form-status {
    background: rgba(30, 144, 255, 0.22);
    border-color: rgba(30, 144, 255, 0.4);
    color: #ddeafb;
}

[data-theme="dark"] .form-status[data-status="success"] {
    background: rgba(46, 204, 113, 0.28);
    border-color: rgba(46, 204, 113, 0.5);
    color: #dcfbe8;
}

[data-theme="dark"] .form-status[data-status="error"] {
    background: rgba(255, 99, 71, 0.32);
    border-color: rgba(255, 99, 71, 0.55);
    color: #ffe0d8;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    font-size: 1rem;
    color: var(--text-body);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background: var(--surface-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 1px rgba(0, 170, 255, 0.25);
    background: #fff;
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--surface-dark);
    color: #fff;
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    list-style: none;
    display: grid;
    gap: 0.35rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.85);
    transition: color var(--transition-base), transform var(--transition-base);
}

.footer-section a:hover {
    color: #fff;
    transform: translateX(4px);
}

.footer-bottom {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid,
    .capability-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-content {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
    }

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

    .navbar .container {
        padding: 0.85rem var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: inline-flex;
    }

    .nav-menu {
        position: fixed;
        inset: 70px 0 auto 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: transform var(--transition-base);
    }

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

    .section-title {
        font-size: 2.2rem;
    }

    .hero {
        padding-top: 6rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }

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

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

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cta-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 540px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

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

    .stats-grid,
    .portfolio-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .hero-title {
        font-size: 2.4rem;
    }

    .theme-toggle {
        bottom: 1rem;
        right: 1rem;
        width: 48px;
        height: 48px;
    }

    .back-to-top {
        bottom: 4.5rem !important;
        right: 1rem !important;
    }

    .service-card,
    .capability-card,
    .feature-card {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .theme-toggle {
        width: 52px;
        height: 52px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}