/* ==========================================================================
   Criterio Contable - Main Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
    /* Colores principales basados en el logo */
    --color-gold: #a89f50;
    --color-gold-light: #c4bc6a;
    --color-gold-dark: #8a8239;
    --color-navy: #1e3a5f;
    --color-navy-light: #2a4a73;
    --color-navy-dark: #152a45;
    
    /* Colores neutros */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Colores funcionales */
    --color-primary: var(--color-navy);
    --color-primary-light: var(--color-navy-light);
    --color-primary-dark: var(--color-navy-dark);
    --color-secondary: var(--color-gold);
    --color-secondary-light: var(--color-gold-light);
    --color-secondary-dark: var(--color-gold-dark);
    --color-accent: var(--color-gold);
    
    /* WhatsApp */
    --color-whatsapp: #25d366;
    --color-whatsapp-dark: #128c7e;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
    --gradient-gold: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    --gradient-hero: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 50%, var(--color-gray-900) 100%);
    
    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* 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;
    --space-32: 8rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: var(--space-6);
    
    /* Border radius */
    --border-radius-sm: 0.25rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    --border-radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-gold: 0 4px 14px 0 rgba(168, 159, 80, 0.39);
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* Selection colors */
::selection {
    background-color: var(--color-gold);
    color: var(--color-white);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-gray-900);
    line-height: var(--line-height-tight);
    font-weight: var(--font-weight-bold);
}

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

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

strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

/* --------------------------------------------------------------------------
   Layout - Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* --------------------------------------------------------------------------
   Components - Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 159, 80, 0.5);
    color: var(--color-white);
}

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

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

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

.btn--whatsapp:hover {
    background: var(--color-whatsapp-dark);
    color: var(--color-white);
}

.btn--large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

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

/* --------------------------------------------------------------------------
   Components - Section Headers
   -------------------------------------------------------------------------- */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-4);
    background: var(--color-gold);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
}

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

/* --------------------------------------------------------------------------
   Header / Navigation
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    color: var(--color-navy);
}

.nav__logo img {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    object-fit: cover;
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav__link {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    position: relative;
    padding: var(--space-2) 0;
}

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

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

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

/* Mobile menu toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.nav__toggle-bar {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-navy);
    transition: all var(--transition-base);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    color: var(--color-white);
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 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='%23ffffff' fill-opacity='0.03'%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");
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    color: var(--color-white);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--space-8);
    max-width: 500px;
    line-height: var(--line-height-relaxed);
}

.hero__cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero__stats {
    display: flex;
    gap: var(--space-8);
}

.stat {
    text-align: left;
}

.stat__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-gold);
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-xl);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero__scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero__scroll a {
    color: var(--color-gray-400);
    display: block;
}

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

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.services {
    padding: var(--space-24) 0;
    background: var(--color-gray-50);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.service-card {
    background: var(--color-white);
    padding: var(--space-8);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-gold);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    margin-bottom: var(--space-6);
}

.service-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
}

.service-card__description {
    color: var(--color-gray-500);
    line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
    padding: var(--space-24) 0;
    background: var(--color-white);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about__image {
    position: relative;
}

.about__image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
}

.about__experience {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--gradient-gold);
    color: var(--color-white);
    padding: var(--space-6) var(--space-8);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.about__years {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    line-height: 1;
}

.about__text {
    display: block;
    font-size: var(--font-size-sm);
    margin-top: var(--space-1);
}

.about__content .section-title {
    margin-bottom: var(--space-6);
}

.about__content p {
    margin-bottom: var(--space-4);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

.about__list {
    list-style: none;
    margin-top: var(--space-6);
}

.about__list li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    color: var(--color-gray-700);
}

.about__list svg {
    color: var(--color-gold);
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta {
    padding: var(--space-24) 0;
    background: var(--gradient-primary);
    color: var(--color-white);
    text-align: center;
}

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

.cta__description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    padding: var(--space-24) 0;
    background: var(--color-gray-50);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact__form {
    background: var(--color-white);
    padding: var(--space-10);
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.form__group {
    display: flex;
    flex-direction: column;
}

.form__group--full {
    grid-column: 1 / -1;
}

.form__label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form__label span {
    color: var(--color-gold);
}

.form__input,
.form__select,
.form__textarea {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-base);
    color: var(--color-gray-900);
    background: var(--color-white);
    transition: all var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(168, 159, 80, 0.1);
}

.form__input--error,
.form__textarea--error {
    border-color: #ef4444;
}

.form__error {
    font-size: var(--font-size-sm);
    color: #ef4444;
    margin-top: var(--space-1);
    min-height: 20px;
}

.form__status {
    display: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.form__status--success {
    display: block;
    color: #166534;
    background: #dcfce7;
    border: 1px solid #86efac;
}

.form__status--error {
    display: block;
    color: #991b1b;
    background: #fee2e2;
    border: 1px solid #fca5a5;
}

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

.form__privacy {
    grid-column: 1 / -1;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    text-align: center;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact__card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
}

.contact__card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.contact__icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    flex-shrink: 0;
}

.contact__card h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-1);
}

.contact__card a,
.contact__card p {
    color: var(--color-gray-500);
    font-size: var(--font-size-base);
}

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

.contact__social {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow);
    text-align: center;
}

.contact__social h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-4);
}

.social__links {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.social__links a {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    transition: all var(--transition-base);
}

.social__links a:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer__brand img {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    margin-bottom: var(--space-4);
}

.footer__brand h3 {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-2);
}

.footer__brand p {
    line-height: var(--line-height-relaxed);
}

.footer__links h4,
.footer__contact h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    margin-bottom: var(--space-4);
}

.footer__links ul {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--space-2);
}

.footer__links a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-gold);
}

.footer__contact a {
    color: var(--color-gray-400);
    display: block;
    margin-bottom: var(--space-2);
}

.footer__contact a:hover {
    color: var(--color-gold);
}

.footer__social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.footer__social a {
    width: 36px;
    height: 36px;
    background: var(--color-gray-800);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer__social a:hover {
    background: var(--color-gold);
    color: var(--color-white);
}

.footer__bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--space-6);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.footer__bottom p {
    margin-bottom: var(--space-1);
}

.footer__developer {
    color: var(--color-gold);
    font-weight: var(--font-weight-semibold);
    text-decoration: underline;
    text-decoration-color: transparent;
    transition: all var(--transition-fast);
}

.footer__developer:hover {
    color: var(--color-gold-light);
    text-decoration-color: var(--color-gold);
}

/* --------------------------------------------------------------------------
   Back to Top Button
   -------------------------------------------------------------------------- */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--gradient-gold);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.mobile-whatsapp {
    position: fixed;
    right: var(--space-5);
    bottom: var(--space-5);
    z-index: var(--z-fixed);
    width: 56px;
    height: 56px;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    background: var(--color-whatsapp);
    border-radius: var(--border-radius-full);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

.mobile-whatsapp:hover {
    color: var(--color-white);
    background: var(--color-whatsapp-dark);
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   Responsive Design - Mobile First
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-10);
    }
    
    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero__cta {
        justify-content: center;
    }
    
    .hero__stats {
        justify-content: center;
    }
    
    .hero__image {
        order: -1;
    }
    
    .hero__image img {
        max-width: 300px;
    }
    
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about__grid,
    .contact__grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .about__image {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }
    
    .nav__menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--space-6);
        gap: var(--space-4);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav__toggle {
        display: flex;
    }

    .nav > .btn--whatsapp {
        display: none;
    }

    .mobile-whatsapp {
        display: flex;
    }

    .back-to-top {
        right: var(--space-5);
        bottom: calc(var(--space-5) + 68px);
    }
    
    .nav__toggle.active .nav__toggle-bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav__toggle.active .nav__toggle-bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav__toggle.active .nav__toggle-bar:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero__stats {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .stat {
        text-align: center;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
    
    .contact__form {
        grid-template-columns: 1fr;
    }
    
    .footer__grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__brand img {
        margin: 0 auto var(--space-4);
    }
    
    .footer__social {
        justify-content: center;
    }
    
    .about__experience {
        right: 10px;
        bottom: -10px;
        padding: var(--space-4) var(--space-6);
    }
}

@media (max-width: 480px) {
    .hero__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .about__experience {
        position: relative;
        right: auto;
        bottom: auto;
        margin-top: var(--space-4);
    }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .header,
    .hero__scroll,
    .back-to-top,
    .mobile-whatsapp,
    .btn--whatsapp {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
    
    body {
        color: #000;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}