/* ========================================
   INTELTAX - STYLES.CSS
   Design System completo en vanilla CSS
   ======================================== */

/* ========================================
   1. VARIABLES CSS Y COLORES
   ======================================== */

:root {
    /* Colores Primarios - IntelTax Brand */
    --navy-deep: #031740;
    --teal-medium: #024059;
    --petrol-green: #308087;
    --turquoise-light: #9DEDDF;
    --mint-light: #B1EDE7;
    
    /* Colores Semánticos */
    --success: #10b981;
    --success-light: #d1fae5;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Escala de Grises */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Colores de Texto */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --text-white: #ffffff;
    
    /* Backgrounds */
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-primary: var(--navy-deep);
    
    /* Tipografía */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 3.75rem;
    
    /* Espaciado */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms;
    --transition-base: 200ms;
    --transition-slow: 300ms;
    
    /* Container */
    --container-max: 1280px;
}

/* ========================================
   2. RESET Y BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

p {
    margin-bottom: var(--space-4);
}

a {
    color: var(--petrol-green);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--teal-medium);
}

ul, ol {
    list-style: none;
}

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

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

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

/* ========================================
   3. UTILITY CLASSES
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding-left: var(--space-8);
        padding-right: var(--space-8);
    }
}

.text-turquoise {
    color: var(--turquoise-light);
}

/* ========================================
   4. BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    min-height: 48px;
    font-size: var(--fs-base);
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base) ease-in-out;
    border: none;
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    color: var(--text-white);
    background-color: var(--petrol-green);
}

.btn-primary:hover {
    background-color: #257680;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    color: var(--text-white);
    background-color: var(--petrol-green);
}

.btn-lg {
    padding: var(--space-5) var(--space-10);
    min-height: 56px;
    font-size: var(--fs-lg);
}

.btn-full {
    width: 100%;
}

/* ========================================
   5. HEADER
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(3, 23, 64, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

@media (min-width: 1024px) {
    .header-content {
        height: 80px;
    }
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: -0.01em;
    text-decoration: none;
}

img.logo-tax {
    max-width: 15%;
    width: 100%;
}
img.logo-tax-foot {
    max-width: 25%;
    width: 100%;
}

@media (min-width: 1024px) {
    .logo {
        font-size: 1.875rem;
    }
}

.logo-check {
    color: var(--turquoise-light);
}

.nav-desktop {
    display: none;
    align-items: center;
    gap: var(--space-8);
}

@media (min-width: 1024px) {
    .nav-desktop {
        display: flex;
    }
}

.nav-link {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-base);
}

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

.btn-desktop {
    display: none;
}

@media (min-width: 1024px) {
    .btn-desktop {
        display: inline-flex;
    }
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: var(--space-2);
    color: var(--text-white);
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
}

.menu-icon {
    position: relative;
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    transition: all var(--transition-base);
}

.menu-icon::before,
.menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    transition: all var(--transition-base);
}

.menu-icon::before {
    top: -8px;
}

.menu-icon::after {
    bottom: -8px;
}

.menu-toggle.open .menu-icon {
    background-color: transparent;
}

.menu-toggle.open .menu-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle.open .menu-icon::after {
    bottom: 0;
    transform: rotate(-45deg);
}

.nav-mobile {
    display: none;
    background-color: var(--navy-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-4);
}

.nav-mobile.open {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 1024px) {
    .nav-mobile {
        display: none !important;
    }
}

.nav-link-mobile {
    font-size: var(--fs-base);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    padding: var(--space-2) 0;
    transition: color var(--transition-base);
}

.nav-link-mobile:hover {
    color: var(--turquoise-light);
}

.btn-mobile {
    margin-top: var(--space-2);
}

/* ========================================
   6. HERO SECTION
   ======================================== */

.hero {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: calc(64px + var(--space-16)) var(--space-4) var(--space-16);
    background: linear-gradient(135deg, var(--navy-deep) 0%, var(--teal-medium) 100%);
    background-image: 
        linear-gradient(135deg, var(--navy-deep) 0%, var(--teal-medium) 100%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239DEDDF' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    color: var(--text-white);
}

@media (min-width: 1024px) {
    .hero {
        padding-top: calc(80px + var(--space-20));
        padding-bottom: var(--space-20);
    }
}

.hero-content {
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
}

.hero-headline {
    font-size: 1.875rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease-out;
}

@media (min-width: 640px) {
    .hero-headline {
        font-size: 2.25rem;
    }
}

@media (min-width: 768px) {
    .hero-headline {
        font-size: var(--fs-5xl);
    }
}

@media (min-width: 1024px) {
    .hero-headline {
        font-size: var(--fs-6xl);
    }
}

.hero-subheadline {
    font-size: var(--fs-lg);
    line-height: 1.7;
    opacity: 0.95;
    max-width: 46rem;
    margin: 0 auto var(--space-8);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

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

.hero-benefits {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-10);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--fs-sm);
}

@media (min-width: 768px) {
    .benefit-item {
        font-size: var(--fs-base);
    }
}

.benefit-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-full);
    background-color: rgba(157, 237, 223, 0.2);
    color: var(--turquoise-light);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

@media (min-width: 640px) {
    .hero-ctas {
        flex-direction: row;
    }
}

.hero-ctas .btn svg {
    margin-left: var(--space-2);
}

.hero-subtitle {
    margin-top: var(--space-6);
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-trust {
    margin-top: var(--space-16);
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.6);
    max-width: 32rem;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.6s ease-out 0.5s both;
}

/* ========================================
   7. SECTIONS
   ======================================== */

.section {
    padding: var(--space-20) var(--space-4);
}

@media (min-width: 768px) {
    .section {
        padding: var(--space-24) var(--space-6);
    }
}

.section-gray {
    background-color: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

@media (min-width: 1024px) {
    .section-header {
        margin-bottom: var(--space-16);
    }
}

.section-title {
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

@media (min-width: 1024px) {
    .section-title {
        font-size: var(--fs-4xl);
    }
}

.section-subtitle {
    font-size: var(--fs-lg);
    color: var(--text-secondary);
    max-width: 44rem;
    margin: 0 auto;
}

/* ========================================
   8. TRUST SECTION
   ======================================== */

.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

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

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

.trust-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-4);
    padding: var(--space-6);
}

.trust-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--turquoise-light), var(--mint-light));
    color: var(--navy-deep);
}

.trust-title {
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.trust-description {
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--text-secondary);
}

/* ========================================
   9. PROBLEM SECTION
   ======================================== */

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

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

.problem-card {
    padding: var(--space-8);
    background-color: var(--bg-white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-slow);
}

.problem-card:hover {
    border-color: var(--petrol-green);
    box-shadow: 0 12px 24px rgba(48, 128, 135, 0.15);
}

.problem-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--turquoise-light), var(--mint-light));
    color: var(--navy-deep);
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.problem-title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.problem-description {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.problem-consequence {
    font-size: var(--fs-base);
    color: var(--text-primary);
}

.callout {
    max-width: 48rem;
    margin: 0 auto;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--navy-deep), var(--teal-medium));
    border-radius: var(--radius-xl);
    text-align: center;
}

.callout p {
    font-size: var(--fs-xl);
    font-weight: 600;
    color: var(--text-white);
    margin: 0;
}

/* ========================================
   10. METHOD SECTION
   ======================================== */

.method-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

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

.method-card {
    padding: var(--space-8);
    background-color: var(--bg-white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-slow);
}

.method-card:hover {
    border-color: var(--petrol-green);
    box-shadow: var(--shadow-lg);
}

.method-phase {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background-color: rgba(48, 128, 135, 0.1);
    color: var(--petrol-green);
    font-size: var(--fs-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
}

.method-title {
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.method-subtitle {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.method-description {
    font-size: var(--fs-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}

.method-list {
    margin-left: var(--space-5);
    margin-bottom: var(--space-4);
}

.method-list li {
    list-style: disc;
    font-size: var(--fs-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.method-deliverable {
    font-size: var(--fs-base);
    color: var(--text-primary);
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-200);
}

.differentiators {
    margin-top: var(--space-16);
}

.differentiators-title {
    font-size: var(--fs-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-8);
}

.differentiators-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

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

@media (min-width: 1024px) {
    .differentiators-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.diff-card {
    padding: var(--space-6);
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    text-align: center;
}

.diff-card h4 {
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.diff-card p {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   11. SERVICES SECTION
   ======================================== */

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

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

.service-card {
    padding: var(--space-8);
    background-color: var(--bg-white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-slow);
}

.service-card:hover {
    border-color: var(--petrol-green);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.service-title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.service-description {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.service-list {
    margin-left: var(--space-5);
}

.service-list li {
    list-style: disc;
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

/* ========================================
   12. CASES SECTION
   ======================================== */

.cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

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

.case-card {
    padding: var(--space-8);
    background-color: var(--bg-white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow);
}

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

.case-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background-color: rgba(48, 128, 135, 0.1);
    color: var(--petrol-green);
    font-size: var(--fs-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.case-title {
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.case-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.case-industry,
.case-size {
    font-size: var(--fs-sm);
    color: var(--text-tertiary);
}

.case-section-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--space-6);
    margin-bottom: var(--space-3);
}

.case-text {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

.case-list {
    margin-left: var(--space-5);
    margin-bottom: var(--space-6);
}

.case-list li {
    list-style: disc;
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.case-result {
    padding-top: var(--space-6);
    border-top: 2px solid var(--gray-200);
}

.case-result-list {
    margin-left: var(--space-5);
}

.case-result-list li {
    list-style: disc;
    font-size: var(--fs-base);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

/* ========================================
   13. TESTIMONIALS SECTION
   ======================================== */

.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

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

.testimonial-card {
    position: relative;
    padding: var(--space-10);
    background-color: var(--bg-white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.testimonial-quote-icon {
    position: absolute;
    top: var(--space-6);
    left: var(--space-6);
    font-size: 4rem;
    font-weight: 700;
    color: var(--turquoise-light);
    opacity: 0.3;
    line-height: 1;
}

.testimonial-quote {
    font-size: var(--fs-lg);
    font-weight: 600;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.testimonial-author {
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-200);
}

.testimonial-name {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.testimonial-role {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    margin-bottom: 0;
}

.testimonial-company {
    font-size: var(--fs-sm);
    color: var(--text-tertiary);
    margin: 0;
}

/* ========================================
   14. FAQ SECTION
   ======================================== */

.faq-container {
    max-width: 50rem;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    overflow: hidden;
    transition: all var(--transition-slow);
}

.faq-item:hover {
    border-color: var(--petrol-green);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-6);
    background-color: var(--bg-white);
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-primary);
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.faq-question:hover {
    background-color: var(--gray-50);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--petrol-green);
    transition: transform var(--transition-slow);
}

.faq-item.open .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) ease-in-out;
}

.faq-item.open .faq-answer {
    max-height: 1000px;
}

.faq-answer-content {
    padding: 0 var(--space-6) var(--space-6);
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--text-secondary);
}

.faq-answer-content p {
    margin-bottom: var(--space-3);
}

.faq-answer-content ul,
.faq-answer-content ol {
    margin-left: var(--space-5);
    margin-bottom: var(--space-3);
}

.faq-answer-content li {
    list-style: disc;
    margin-bottom: var(--space-2);
}

.faq-answer-content ol li {
    list-style: decimal;
}

/* ========================================
   15. CONTACT SECTION
   ======================================== */

.section-contact {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--bg-white) 100%);
}

.contact-headline {
    font-size: var(--fs-4xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin: var(--space-4) 0 var(--space-6);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    margin-top: var(--space-12);
}

@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--space-16);
    }
}

.contact-benefits-title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-8);
}

.contact-benefit-item {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.contact-benefit-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background-color: rgba(48, 128, 135, 0.1);
    color: var(--petrol-green);
    font-size: var(--fs-lg);
    font-weight: 700;
}

.contact-benefit-content h5 {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.contact-benefit-content p {
    font-size: var(--fs-base);
    color: var(--text-secondary);
    margin: 0;
}

.contact-form-container {
    background-color: var(--bg-white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.contact-form .form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-4);
    font-family: var(--font-primary);
    font-size: var(--fs-base);
    color: var(--text-primary);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background-color: var(--bg-white);
    transition: all var(--transition-base);
    outline: none;
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--petrol-green);
    box-shadow: 0 0 0 3px rgba(48, 128, 135, 0.1);
}

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

.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.form-checkbox {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    border: 2px solid var(--gray-400);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.form-checkbox:checked {
    background-color: var(--petrol-green);
    border-color: var(--petrol-green);
}

.form-checkbox-label {
    font-size: var(--fs-sm);
    line-height: 1.5;
    color: var(--text-secondary);
    cursor: pointer;
}

.contact-next-step {
    margin-top: var(--space-6);
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    text-align: center;
}

.contact-alternative {
    margin-top: var(--space-16);
    text-align: center;
}

.contact-alternative h4 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-8);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 48rem;
    margin: 0 auto;
}

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

.contact-info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.contact-info-item svg {
    color: var(--petrol-green);
}

.contact-info-item span {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    text-align: center;
}

.contact-trust {
    margin-top: var(--space-12);
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--navy-deep), var(--teal-medium));
    border-radius: var(--radius-xl);
    text-align: center;
}

.contact-trust p {
    font-size: var(--fs-xl);
    font-weight: 600;
    color: var(--text-white);
    margin: 0;
}

/* ========================================
   16. FOOTER
   ======================================== */

.footer {
    background-color: var(--navy-deep);
    padding: var(--space-16) var(--space-4);
    color: var(--text-white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

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

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
        gap: var(--space-8);
    }
}

.footer-col {
    color: rgba(255, 255, 255, 0.9);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    text-decoration: none;
    display: inline-block;
    margin-bottom: var(--space-4);
}

.footer-logo-check {
    color: var(--turquoise-light);
}

.footer-tagline {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-4);
}

.footer-address {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    font-style: normal;
    line-height: 1.6;
}

.footer-address p {
    margin: 0;
}

.footer-title {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: var(--space-4);
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: var(--space-3);
}

.footer-list a {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-list a:hover {
    color: var(--turquoise-light);
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-3);
}

.footer-contact-item svg {
    color: var(--turquoise-light);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* ========================================
   17. ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   18. ACCESSIBILITY
   ======================================== */

:focus-visible {
    outline: 2px solid var(--petrol-green);
    outline-offset: 2px;
}

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

/* ========================================
   19. RESPONSIVE UTILITIES
   ======================================== */

@media (max-width: 767px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 768px) {
    .hide-desktop {
        display: none !important;
    }
}