/* ================================================
   4 Bits Engineers - Landing Page Styles
   Professional Tech Palette & Modern Design
   ================================================ */

/* ================================================
   CSS Custom Properties (Design Tokens)
   ================================================ */
:root {
    /* Colors - Professional Tech Palette */
    --color-primary: #3B82F6;        /* Blue 500 */
    --color-primary-dark: #2563EB;   /* Blue 600 */
    --color-primary-light: #60A5FA;  /* Blue 400 */
    --color-secondary: #8B5CF6;      /* Violet 500 */
    --color-accent: #06B6D4;         /* Cyan 500 */

    --color-success: #10B981;        /* Green 500 */
    --color-warning: #F59E0B;        /* Amber 500 */
    --color-error: #EF4444;          /* Red 500 */

    --color-dark: #0F172A;           /* Slate 900 */
    --color-dark-light: #1E293B;     /* Slate 800 */
    --color-gray: #64748B;           /* Slate 500 */
    --color-gray-light: #CBD5E1;     /* Slate 300 */
    --color-gray-lighter: #F1F5F9;   /* Slate 100 */
    --color-white: #FFFFFF;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    /* Spacing */
    --spacing-xs: 0.5rem;         /* 8px */
    --spacing-sm: 1rem;           /* 16px */
    --spacing-md: 1.5rem;         /* 24px */
    --spacing-lg: 2rem;           /* 32px */
    --spacing-xl: 3rem;           /* 48px */
    --spacing-2xl: 4rem;          /* 64px */
    --spacing-3xl: 6rem;          /* 96px */

    /* Layout */
    --container-max: 1200px;
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --color-dark: #F8FAFC;
        --color-dark-light: #E2E8F0;
        --color-gray: #94A3B8;
        --color-gray-light: #475569;
        --color-gray-lighter: #1E293B;
        --color-white: #0F172A;
    }
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-white);
}

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

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

ul, ol {
    list-style: none;
}

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

/* ================================================
   Utility Classes
   ================================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ================================================
   Buttons
   ================================================ */
.btn-primary, .btn-secondary, .btn-primary-small {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: var(--font-size-base);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-primary-small {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.5rem 1.5rem;
    font-size: var(--font-size-sm);
}

.btn-primary-small:hover {
    background: var(--color-primary-dark);
}

.btn-full {
    width: 100%;
}

/* ================================================
   Navigation
   ================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    .navbar {
        background: rgba(15, 23, 42, 0.95);
    }
}

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

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-dark);
}

.logo svg {
    color: var(--color-primary);
}

.logo-number {
    font-family: var(--font-mono);
    color: var(--color-primary);
}

.nav-menu {
    display: none;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-menu a {
    font-weight: 500;
    color: var(--color-dark-light);
    transition: color var(--transition-fast);
}

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

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0.5rem;
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: all var(--transition-fast);
}

.nav-toggle:hover span {
    background: var(--color-primary);
}

.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

@media (prefers-color-scheme: dark) {
    .nav-menu.active {
        background: var(--color-white);
    }
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
    overflow: hidden;
}

@media (prefers-color-scheme: dark) {
    .hero {
        background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    }
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-6xl);
    }
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

.hero-trust {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

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

.trust-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-primary);
    line-height: 1;
}

.trust-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin-top: 0.5rem;
}

/* ================================================
   Sections General
   ================================================ */
section {
    padding: var(--spacing-3xl) 0;
}

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

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

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

/* ================================================
   Problem Section
   ================================================ */
.problem-section {
    background: var(--color-white);
}

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

@media (min-width: 1024px) {
    .problems-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.problem-card {
    padding: var(--spacing-lg);
    background: var(--color-gray-lighter);
    border-radius: var(--border-radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

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

.problem-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.problem-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.problem-card p {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    font-style: italic;
}

/* ================================================
   Solution Section
   ================================================ */
.solution-section {
    background: var(--color-dark);
    color: var(--color-white);
}

.solution-section .section-title,
.solution-section .section-subtitle {
    color: var(--color-white);
}

.solutions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .solutions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.solution-card {
    padding: var(--spacing-xl);
    background: var(--color-dark-light);
    border-radius: var(--border-radius-lg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    position: relative;
    transition: all var(--transition-base);
}

.solution-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.solution-card.featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-dark-light) 0%, rgba(59, 130, 246, 0.1) 100%);
}

.solution-badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.25rem 0.75rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 1rem;
}

.solution-number {
    font-size: var(--font-size-4xl);
    font-family: var(--font-mono);
    font-weight: 800;
    color: var(--color-primary);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.solution-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.solution-card > p {
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-md);
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.solution-features li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
}

.solution-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* ================================================
   Guarantee Section
   ================================================ */
.guarantee-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.guarantee-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

@media (min-width: 1024px) {
    .guarantee-content {
        grid-template-columns: 1fr 1fr;
    }
}

.guarantee-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: var(--spacing-md);
}

.guarantee-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .guarantee-text h2 {
        font-size: var(--font-size-4xl);
    }
}

.guarantee-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.guarantee-list {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
}

.guarantee-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-lg);
}

.guarantee-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    font-weight: 700;
}

.guarantee-cta-text {
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.guarantee-visual {
    display: flex;
    justify-content: center;
}

.guarantee-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    max-width: 400px;
    width: 100%;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray-lighter);
}

.card-title {
    font-weight: 700;
    color: var(--color-dark);
}

.card-status {
    font-size: var(--font-size-sm);
    color: var(--color-success);
    font-weight: 600;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.analysis-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    color: var(--color-dark);
}

.analysis-item.red {
    background: rgba(239, 68, 68, 0.1);
}

.analysis-item.yellow {
    background: rgba(245, 158, 11, 0.1);
}

.analysis-item.green {
    background: rgba(16, 185, 129, 0.1);
}

.card-footer {
    padding-top: var(--spacing-sm);
    border-top: 2px solid var(--color-gray-lighter);
    font-size: var(--font-size-sm);
    color: var(--color-dark);
}

/* ================================================
   Anti-Proposal Section
   ================================================ */
.anti-proposal {
    background: var(--color-gray-lighter);
}

.anti-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

@media (min-width: 768px) {
    .anti-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.anti-card {
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    text-align: center;
    border: 2px solid var(--color-error);
    opacity: 0.7;
}

.anti-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    filter: grayscale(100%);
}

.anti-card p {
    color: var(--color-gray);
    font-weight: 500;
}

.we-are-for {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--color-success);
}

.we-are-for h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--color-dark);
}

.for-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .for-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.check {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--color-success);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.for-item p {
    color: var(--color-dark);
}

/* ================================================
   Cases Section
   ================================================ */
.cases-section {
    background: var(--color-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.case-card {
    padding: var(--spacing-xl);
    background: var(--color-gray-lighter);
    border-radius: var(--border-radius-lg);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

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

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.case-industry {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 1rem;
}

.case-value {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
}

.case-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
    line-height: 1.3;
}

.case-challenge, .case-solution {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark-light);
}

.case-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-gray-light);
}

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

.result-value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-success);
    line-height: 1;
}

.result-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray);
    margin-top: 0.25rem;
}

/* ================================================
   Team Section
   ================================================ */
.team-section {
    background: var(--color-dark);
    color: var(--color-white);
}

.team-section .section-title,
.team-section .section-subtitle {
    color: var(--color-white);
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

@media (min-width: 768px) {
    .team-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

.team-stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-dark-light);
    border-radius: var(--border-radius-lg);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.stat-value {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
    margin-top: var(--spacing-sm);
}

.team-value {
    max-width: 800px;
    margin: var(--spacing-2xl) auto 0;
    text-align: center;
}

.team-value h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.team-value p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-md);
}

.team-badges {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .team-badges {
        grid-template-columns: repeat(2, 1fr);
    }
}

.badge-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-dark-light);
    border-radius: var(--border-radius);
    text-align: left;
}

.badge-icon {
    font-size: var(--font-size-2xl);
}

/* ================================================
   Contact Section
   ================================================ */
.contact-section {
    background: var(--color-gray-lighter);
}

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

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
    }
}

.contact-info h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.contact-intro {
    font-size: var(--font-size-lg);
    color: var(--color-dark-light);
    margin-bottom: var(--spacing-sm);
}

.contact-response {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    margin-bottom: var(--spacing-xl);
}

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

.contact-icon {
    font-size: var(--font-size-2xl);
}

.contact-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--color-primary);
    font-weight: 600;
}

.contact-item a:hover {
    text-decoration: underline;
}

.what-happens {
    padding: var(--spacing-lg);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-primary);
}

.what-happens h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.process-list {
    list-style: none;
    counter-reset: process-counter;
}

.process-list li {
    counter-increment: process-counter;
    position: relative;
    padding-left: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark-light);
}

.process-list li::before {
    content: counter(process-counter);
    position: absolute;
    left: 0;
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-xs);
}

/* ================================================
   Contact Form
   ================================================ */
.contact-form-wrapper {
    position: relative;
}

.contact-form {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-gray-light);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--color-error);
}

.error-message {
    display: none;
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-group.error .error-message {
    display: block;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-privacy {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    text-align: center;
    margin-top: var(--spacing-md);
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-success.active {
    display: block;
}

.success-icon {
    width: 60px;
    height: 60px;
    background: var(--color-success);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.form-success h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.form-success p {
    font-size: var(--font-size-lg);
    color: var(--color-gray);
}

/* ================================================
   Footer
   ================================================ */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr auto;
        align-items: center;
    }
}

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

.footer-tagline {
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
}

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

.footer-links a {
    color: var(--color-gray-light);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
}

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

.animate-on-scroll {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

/* ================================================
   Responsive Utilities
   ================================================ */
@media (max-width: 767px) {
    .section-title {
        font-size: var(--font-size-2xl);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }
}