/* ========================================
   4U Driving School - Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors - Crimson Red from logo */
    --color-primary: #B22234;
    --color-primary-dark: #8B1A28;
    --color-primary-light: #D4324A;

    /* Secondary Colors - Black from logo */
    --color-secondary: #1A1A1A;
    --color-secondary-dark: #000000;
    --color-secondary-light: #333333;

    /* Accent Colors - Yellow from road lines in logo */
    --color-accent: #FFD700;
    --color-accent-dark: #E6C200;

    /* WhatsApp Color */
    --color-whatsapp: #25D366;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-gray-100: #F8F9FA;
    --color-gray-200: #E9ECEF;
    --color-gray-300: #DEE2E6;
    --color-gray-400: #CED4DA;
    --color-gray-500: #ADB5BD;
    --color-gray-600: #6C757D;
    --color-gray-700: #495057;
    --color-gray-800: #343A40;
    --color-gray-900: #212529;

    /* Text Colors */
    --color-text: #333333;
    --color-text-light: #4F4F4F;
    --color-text-muted: #6C757D;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(178, 34, 52, 0.92) 0%, rgba(26, 26, 26, 0.88) 100%);

    /* Typography */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', 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;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;

    /* Header Height */
    --header-height: 80px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

body {
    font-family: var(--font-secondary);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

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

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

ul {
    list-style: none;
}

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

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

/* ========================================
   Utility Classes
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.section {
    padding: var(--spacing-4xl) 0;
}

.section__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section__subtitle {
    display: inline-block;
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section__title {
    font-size: var(--fs-4xl);
    margin-bottom: var(--spacing-md);
}

.section__description {
    font-size: var(--fs-lg);
    color: var(--color-text-light);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.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);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

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

.btn--outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

.btn--lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--fs-base);
}

.btn--block {
    width: 100%;
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: var(--color-white);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-primary);
    font-weight: 800;
}

.logo-4u {
    font-size: var(--fs-3xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: var(--fs-lg);
    color: var(--color-gray-800);
}

.nav__list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav__phone {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.nav__phone i {
    font-size: var(--fs-sm);
}

.nav__cta {
    padding: 8px 16px;
    font-size: var(--fs-xs);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: var(--fs-2xl);
    color: var(--color-gray-800);
    cursor: pointer;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: url('https://images.unsplash.com/photo-1449965408869-eaa3f722e40d?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
    padding-top: var(--header-height);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__data {
    max-width: 700px;
}

.hero__subtitle {
    display: inline-block;
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
}

.hero__title {
    font-size: var(--fs-6xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero__title .text-gradient {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: var(--fs-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero__stats {
    display: flex;
    gap: var(--spacing-3xl);
}

.hero__stat {
    text-align: center;
}

.hero__stat-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.hero__stat-number {
    font-family: var(--font-primary);
    font-size: var(--fs-4xl);
    font-weight: 800;
    color: var(--color-white);
}

.hero__stat-prefix {
    font-family: var(--font-primary);
    font-size: var(--fs-4xl);
    font-weight: 800;
    color: var(--color-white);
}

.hero__stat-text {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero__scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.hero__scroll-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-white);
    font-size: var(--fs-sm);
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ========================================
   Features Bar
   ======================================== */

.features-bar {
    background: var(--color-white);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.features-bar__grid {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-800);
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 500;
}

.feature-item i {
    color: var(--color-primary);
    font-size: var(--fs-lg);
}

/* ========================================
   Services Section
   ======================================== */

.services {
    background: var(--color-gray-100);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-card--featured {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.service-card--featured .service-card__title,
.service-card--featured .service-card__description,
.service-card--featured .service-card__features li {
    color: var(--color-white);
}

.service-card--featured .service-card__icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.service-card__badge {
    position: absolute;
    top: var(--spacing-lg);
    right: calc(var(--spacing-lg) * -1);
    background: var(--color-secondary);
    color: var(--color-white);
    font-family: var(--font-primary);
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--spacing-xs) var(--spacing-2xl);
    transform: rotate(45deg);
}

.service-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--fs-3xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.service-card__title {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-md);
}

.service-card__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.service-card__features {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.service-card__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--color-text-light);
}

.service-card__features li i {
    color: var(--color-primary);
    font-size: var(--fs-sm);
}

.service-card--featured .service-card__features li i {
    color: var(--color-white);
}

/* ========================================
   About Section
   ======================================== */

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about__images {
    position: relative;
}

.about__image-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about__image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    height: 400px;
    background: var(--gradient-primary);
    color: var(--color-white);
}

.about__image-placeholder i {
    font-size: 5rem;
    opacity: 0.9;
}

.about__image-placeholder span {
    font-family: var(--font-primary);
    font-size: var(--fs-xl);
    font-weight: 600;
}

.about__image-secondary {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 180px;
    height: 180px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 5px solid var(--color-white);
}

.about__image-placeholder--small {
    height: 100%;
    background: var(--color-secondary);
}

.about__image-placeholder--small i {
    font-size: 3rem;
}

.about__experience {
    position: absolute;
    top: 30px;
    left: -30px;
    background: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.about__experience-number {
    display: block;
    font-family: var(--font-primary);
    font-size: var(--fs-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about__experience-text {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about__content .section__subtitle,
.about__content .section__title {
    text-align: left;
}

.about__text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.about__features {
    display: grid;
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.about__feature {
    display: flex;
    gap: var(--spacing-lg);
}

.about__feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--fs-xl);
    border-radius: var(--radius-md);
}

.about__feature-content h4 {
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-xs);
}

.about__feature-content p {
    color: var(--color-text-light);
    font-size: var(--fs-sm);
}

/* ========================================
   Testimonials Section
   ======================================== */

.testimonials {
    background: var(--color-gray-900);
}

.testimonials .section__subtitle,
.testimonials .section__title,
.testimonials .section__description {
    color: var(--color-white);
}

.testimonials .section__description {
    color: rgba(255, 255, 255, 0.7);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    position: relative;
}

.testimonial-card::before {
    content: '\201C';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-xl);
    font-size: 6rem;
    font-family: Georgia, serif;
    color: var(--color-gray-200);
    line-height: 1;
}

.testimonial-card__rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.testimonial-card__rating i {
    color: #FFD700;
    font-size: var(--fs-sm);
}

.testimonial-card__text {
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-card__avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
}

.testimonial-card__info h4 {
    font-size: var(--fs-base);
    margin-bottom: 0;
}

.testimonial-card__info span {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    position: relative;
    padding: var(--spacing-4xl) 0;
    background: url('https://images.unsplash.com/photo-1503376780353-7e6692767b70?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat fixed;
}

.cta__overlay {
    position: absolute;
    inset: 0;
    background: rgba(178, 34, 52, 0.92);
}

.cta__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta__title {
    font-size: var(--fs-4xl);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta__text {
    font-size: var(--fs-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
}

.cta__buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   Contact Section
   ======================================== */

.contact__info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 860px;
    margin: 0 auto;
}

.contact__social {
    grid-column: 1 / -1;
}

.contact__card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.contact__card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
}

.contact__card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.contact__card-content h4 {
    font-size: var(--fs-base);
    margin-bottom: var(--spacing-xs);
}

.contact__card-content p {
    font-size: var(--fs-sm);
    color: var(--color-text-light);
}

.contact__card-content a {
    color: var(--color-primary);
}

.contact__card-content a:hover {
    text-decoration: underline;
}

.contact__social {
    padding: var(--spacing-lg);
}

.contact__social h4 {
    font-size: var(--fs-base);
    margin-bottom: var(--spacing-md);
}

.contact__social-links {
    display: flex;
    gap: var(--spacing-md);
}

.contact__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.contact__social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.contact__form-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
}

.contact__form-title {
    font-size: var(--fs-2xl);
    margin-bottom: var(--spacing-xl);
}

.form__group {
    margin-bottom: var(--spacing-lg);
}

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

.form__label {
    display: block;
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.form__input,
.form__select,
.form__textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--fs-base);
    transition: all var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(178, 34, 52, 0.15);
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: var(--color-gray-400);
}

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

/* ========================================
   Map Section
   ======================================== */

.map {
    width: 100%;
}

.map__container {
    width: 100%;
    height: 400px;
    filter: grayscale(20%);
}

.map__container iframe {
    display: block;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--color-gray-900);
    padding: var(--spacing-4xl) 0 0;
    color: var(--color-gray-400);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--color-gray-800);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-primary);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.footer__logo .logo-text {
    color: var(--color-white);
}

.footer__description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.footer__social {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-gray-800);
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.footer__social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer__title {
    font-size: var(--fs-lg);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.footer__list li {
    margin-bottom: var(--spacing-sm);
}

.footer__list a {
    transition: all var(--transition-fast);
}

.footer__list a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-sm);
}

.footer__contact .footer__list li {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer__contact .footer__list i {
    color: var(--color-primary);
    width: 20px;
    flex-shrink: 0;
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) 0;
    font-size: var(--fs-sm);
}

.footer__bottom-links {
    display: flex;
    gap: var(--spacing-xl);
}

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

/* ========================================
   Back to Top Button
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: 90px;
    right: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-5px);
}

/* ========================================
   Responsive Design
   ======================================== */

@media screen and (max-width: 1200px) {
    .nav__list {
        gap: var(--spacing-md);
    }

    .nav__link {
        font-size: var(--fs-xs);
    }

    .nav__phone span {
        display: none;
    }

    .nav__cta {
        padding: 6px 12px;
    }
}

@media screen and (max-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .about__images {
        max-width: 500px;
        margin: 0 auto;
    }

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

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

    .nav__logo-img {
        height: 45px;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --fs-6xl: 2.5rem;
        --fs-5xl: 2rem;
        --fs-4xl: 1.75rem;
    }

    .nav__toggle {
        display: block;
        color: var(--color-primary);
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 350px;
        height: 100vh;
        background: var(--color-primary-dark);
        padding: var(--spacing-4xl) var(--spacing-xl);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-base);
        z-index: var(--z-modal);
    }

    .nav__menu.show {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav__link {
        font-size: var(--fs-lg);
        color: var(--color-white);
    }

    .nav__link:hover,
    .nav__link.active {
        color: rgba(255, 255, 255, 0.7);
    }

    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
        color: var(--color-white);
    }

    .nav__actions {
        display: none;
    }

    .hero__buttons {
        flex-direction: column;
    }

    .hero__stats {
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }

    .features-bar__grid {
        justify-content: center;
    }

    .feature-item {
        flex: 0 0 45%;
        justify-content: center;
    }

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

    .footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__social,
    .footer__list {
        justify-content: center;
    }

    .footer__contact .footer__list {
        text-align: left;
        display: inline-block;
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

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

@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero__stat {
        flex: 0 0 100%;
    }

    .feature-item {
        flex: 0 0 100%;
    }

    .about__image-secondary,
    .about__experience {
        display: none;
    }

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

/* ========================================
   Animations
   ======================================== */

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Scroll Reveal Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* ========================================
   Logo Image
   ======================================== */

.nav__logo-img {
    height: 50px;
    width: auto;
    transition: all var(--transition-base);
}

.header.scrolled .nav__logo-img {
    height: 45px;
}

.footer__logo-img {
    height: 45px;
    width: auto;
    margin-bottom: var(--spacing-lg);
}

elevenlabs-convai {
    transform: scale(1.25);
    transform-origin: bottom right;
}

/* ========================================
   WhatsApp Floating Button
   ======================================== */

.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    z-index: var(--z-fixed);
}

.whatsapp-float__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-base);
    font-size: 2rem;
}

.whatsapp-float__btn:hover {
    background: #20BA5C;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float__tooltip {
    background: var(--color-white);
    color: var(--color-gray-800);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--fs-sm);
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-10px);
    transition: all var(--transition-base);
}

.whatsapp-float:hover .whatsapp-float__tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.whatsapp-float__pulse {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    border-radius: var(--radius-full);
    animation: whatsappPulse 2s infinite;
    z-index: -1;
}

@keyframes whatsappPulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* WhatsApp responsive */
@media screen and (max-width: 768px) {
    .whatsapp-float {
        bottom: var(--spacing-lg);
        left: var(--spacing-lg);
    }

    .whatsapp-float__btn {
        width: 55px;
        height: 55px;
        font-size: 1.75rem;
    }

    .whatsapp-float__pulse {
        width: 55px;
        height: 55px;
    }

    .whatsapp-float__tooltip {
        display: none;
    }

    .nav__logo-img {
        height: 40px;
    }

    elevenlabs-convai {
        transform: scale(0.95);
        transform-origin: bottom right;
        right: 0;
        bottom: 0;
        position: fixed;
    }
}

/* ========================================
   Language Selector
   ======================================== */

.lang-selector {
    position: relative;
}

.lang-selector__btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    background: transparent;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--fs-xs);
    font-weight: 600;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-selector__btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.lang-selector__btn i:first-child {
    font-size: var(--fs-base);
}

.lang-selector__arrow {
    font-size: var(--fs-xs);
    transition: transform var(--transition-fast);
}

.lang-selector.open .lang-selector__arrow {
    transform: rotate(180deg);
}

.lang-selector__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 150px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
    overflow: hidden;
}

.lang-selector.open .lang-selector__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-selector__option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    font-family: var(--font-primary);
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.lang-selector__option:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.lang-selector__option.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.lang-selector__flag {
    font-size: var(--fs-lg);
}

/* Mobile Language Selector */
.lang-selector--mobile {
    display: none;
    flex-direction: row;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.lang-selector--mobile .lang-selector__option {
    flex: 1;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}

.lang-selector--mobile .lang-selector__option.active {
    border-color: var(--color-white);
    background: rgba(255, 255, 255, 0.15);
}

/* Language selector responsive */
@media screen and (max-width: 768px) {
    .lang-selector:not(.lang-selector--mobile) {
        display: none;
    }

    .lang-selector--mobile {
        display: flex;
    }
}