/* ============================
   Lanshen Consulting - Styles
   Minimalist Business | Blue-Green-White Palette
   ============================ */

/* --- Design Tokens --- */
:root {
    /* Colors - Blue-Green-White Palette */
    --color-primary: #0d6e7d;        /* Deep teal blue */
    --color-primary-dark: #095260;
    --color-primary-light: #1a8a9c;
    --color-accent: #2d8a6a;          /* Green accent */
    --color-accent-light: #3da67f;
    --color-accent-dark: #1f6b4e;

    --color-bg: #ffffff;
    --color-bg-alt: #f7f9fa;
    --color-bg-soft: #eef3f4;
    --color-bg-dark: #0a2530;

    --color-text: #1a2e35;
    --color-text-secondary: #5a6b73;
    --color-text-light: #8a9ba3;
    --color-text-inverse: #ffffff;

    --color-border: #e0e8ea;
    --color-border-light: #eef3f4;

    --color-white: #ffffff;
    --color-overlay: rgba(10, 37, 48, 0.85);

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

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

    /* Layout */
    --container-max: 1200px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    /* Effects */
    --shadow-sm: 0 1px 3px rgba(10, 37, 48, 0.08);
    --shadow-md: 0 4px 12px rgba(10, 37, 48, 0.08);
    --shadow-lg: 0 12px 32px rgba(10, 37, 48, 0.10);
    --shadow-xl: 0 24px 48px rgba(10, 37, 48, 0.14);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

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

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

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

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

a:hover {
    color: var(--color-primary-dark);
}

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

/* --- Container --- */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* --- Section Headers --- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: var(--space-md) auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: var(--space-md) auto 0;
}

.section-header-light .section-title {
    color: var(--color-white);
}

.section-header-light .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn-full {
    width: 100%;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 1rem var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.logo-mark {
    display: inline-block;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 8px;
    position: relative;
}

.logo-mark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    border: 2.5px solid var(--color-white);
    border-radius: 50%;
    border-top-color: transparent;
    border-right-color: transparent;
}

.logo-text {
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--color-accent);
    margin-left: 0.25rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.lang-toggle {
    background: var(--color-bg-soft);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.4rem 0.875rem;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
}

.lang-toggle:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f0f7f8 0%, #e8f4f0 50%, #f0f7f8 100%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(13, 110, 125, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(45, 138, 106, 0.05) 0%, transparent 50%);
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-xl);
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-2xl);
    align-items: center;
    width: 100%;
}

.hero-content {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.hero-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(13, 110, 125, 0.1);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

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

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    height: 400px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-card {
    position: absolute;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

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

.hero-card-1 {
    top: 20px;
    left: 0;
    width: 60%;
    animation: floatCard 4s ease-in-out infinite;
}

.hero-card-2 {
    bottom: 20px;
    right: 0;
    width: 60%;
    animation: floatCard 4s ease-in-out infinite 2s;
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-sm);
}

.hero-card-1 .card-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
}

.hero-card-2 .card-icon {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-white);
}

.hero-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.hero-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-light);
    border-radius: 12px;
    z-index: 2;
    opacity: 0.6;
}

.scroll-indicator span {
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-text-light);
    border-radius: 2px;
    animation: scrollDown 2s ease-in-out infinite;
}

/* --- Stats Bar --- */
.stats-bar {
    background: var(--color-bg-dark);
    padding: var(--space-xl) 0;
}

.stats-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: var(--space-md);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.stat-suffix {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent-light);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.5rem;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
}

/* --- About Section --- */
.about {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.9;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.value-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, rgba(13, 110, 125, 0.1), rgba(45, 138, 106, 0.1));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-item h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.value-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.about-visual {
    position: relative;
}

.about-image-wrap {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
}

.about-image-bg {
    width: 100%;
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--border-radius-xl);
}

.about-image-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
}

.mission-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

.mission-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.mission-card p {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.mission-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.mission-tags span {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    font-size: var(--font-size-xs);
    color: var(--color-white);
}

/* --- Services Section --- */
.services {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.service-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.service-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.service-icon {
    width: 64px;
    height: 64px;
    min-width: 64px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.service-icon-esg {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
}

.service-icon-global {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

.service-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.service-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.625rem;
}

.service-list li {
    position: relative;
    padding-left: 1.5rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
}

.services-grid-secondary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.service-card-small {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
    text-align: center;
}

.service-card-small:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.service-icon-sm {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-sm);
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, rgba(13, 110, 125, 0.08), rgba(45, 138, 106, 0.08));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card-small h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.service-card-small p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* --- Approach Section --- */
.approach {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

.approach-timeline {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.approach-step {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    text-align: center;
    padding: 0 var(--space-sm);
}

.step-number {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.step-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.approach-connector {
    flex: 0 0 auto;
    width: 40px;
    height: 2px;
    background: var(--color-border);
    margin-top: 28px;
    position: relative;
}

.approach-connector::after {
    content: '';
    position: absolute;
    right: -3px;
    top: -3px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--color-border);
    border-right: 2px solid var(--color-border);
    transform: rotate(45deg);
}

/* --- Contact Section --- */
.contact {
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #0d3a4a 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(45, 138, 106, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(13, 110, 125, 0.12) 0%, transparent 50%);
}

.contact .section-container {
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

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

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-detail {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.25rem;
}

.contact-detail a,
.contact-detail span {
    font-size: var(--font-size-base);
    color: var(--color-white);
}

.contact-detail a:hover {
    color: var(--color-accent-light);
}

.contact-form-wrap {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-light);
    background: rgba(255, 255, 255, 0.12);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%23ffffff' stroke-width='2' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn-primary {
    background: var(--color-accent);
    border-color: var(--color-accent);
    margin-top: var(--space-xs);
}

.contact-form .btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--space-lg) 0;
    color: var(--color-accent-light);
}

.form-success svg {
    margin: 0 auto var(--space-sm);
    color: var(--color-accent-light);
}

.form-success p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-lg);
}

.form-success.active {
    display: block;
    animation: fadeInUp 0.5s ease;
}

/* --- Footer --- */
.footer {
    background: var(--color-bg-dark);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand .nav-logo {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    max-width: 320px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.footer-col h5 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a,
.footer-col span {
    display: block;
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-accent-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: var(--space-lg);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: var(--font-size-sm);
}

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

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

@keyframes scrollDown {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(16px);
    }
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .hero-visual {
        display: none;
    }

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

    .about-visual {
        max-width: 400px;
        margin: 0 auto;
    }

    .services-grid-secondary {
        grid-template-columns: repeat(2, 1fr);
    }

    .approach-timeline {
        flex-direction: column;
        align-items: center;
    }

    .approach-step {
        max-width: 320px;
    }

    .approach-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }

    .approach-connector::after {
        right: -3px;
        top: 35px;
        transform: rotate(135deg);
    }

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

@media (max-width: 768px) {
    :root {
        --space-3xl: 4rem;
        --space-4xl: 5rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        max-height: 300px;
        padding: var(--space-sm) 0;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
    }

    .nav-menu li a {
        display: block;
        padding: var(--space-sm);
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: var(--space-2xl) 0 var(--space-3xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .stats-container {
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        flex: 1;
        min-width: 45%;
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

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

    .service-list {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
    }

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

    .section-container {
        padding: 0 var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .services-grid-secondary {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .stat-item {
        min-width: 100%;
    }
}