/* 
* Modern Stylesheet for Accounting Services
* Color Palette:
* - Primary: #3563E9 (blue)
* - Secondary: #22C55E (green)
* - Neutral Dark: #1E293B (slate)
* - Neutral Light: #F8FAFC (light gray)
* - Accent: #F59E0B (amber)
*/

/* ---------- RESET & BASE STYLES ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #3563E9;
    --color-primary-light: #4F74EB;
    --color-primary-dark: #2754DB;
    --color-secondary: #22C55E;
    --color-secondary-light: #34D670;
    --color-secondary-dark: #16A34A;
    --color-neutral-50: #F8FAFC;
    --color-neutral-100: #F1F5F9;
    --color-neutral-200: #E2E8F0;
    --color-neutral-300: #CBD5E1;
    --color-neutral-400: #94A3B8;
    --color-neutral-500: #64748B;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1E293B;
    --color-neutral-900: #0F172A;
    --color-accent: #F59E0B;
    --color-accent-light: #FBBF24;
    --color-accent-dark: #D97706;
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-white: #FFFFFF;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Outfit', var(--font-sans);
    --transition-fast: 0.2s;
    --transition-medium: 0.3s;
    --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);
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-full: 9999px;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@400;500;600;700&display=swap');

html {
    font-size: 62.5%; /* 10px = 1rem */
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 1.6rem;
    line-height: 1.6;
    color: var(--color-neutral-800);
    background-color: var(--color-white);
    overflow-x: hidden;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2.4rem;
}

section {
    padding: 10rem 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-neutral-900);
}

h1 {
    font-size: 5.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 4rem;
    margin-bottom: 1.6rem;
}

h3 {
    font-size: 2.8rem;
    font-weight: 600;
}

h4 {
    font-size: 2.4rem;
    font-weight: 600;
}

p {
    margin-bottom: 2.4rem;
    color: var(--color-neutral-700);
}

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

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

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

ul {
    list-style: none;
}

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

.section-title {
    text-align: center;
    margin-bottom: 6.4rem;
}

.section-title p {
    max-width: 64rem;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.8rem;
}

.section-subtitle {
    text-transform: uppercase;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1.2rem;
    letter-spacing: 0.1em;
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.4rem;
    font-size: 1.6rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast) ease;
    gap: 0.8rem;
    border: none;
    line-height: 1.6;
    font-family: var(--font-sans);
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 1px 2px rgba(53, 99, 233, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(53, 99, 233, 0.25);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
    box-shadow: 0 1px 2px rgba(34, 197, 94, 0.25);
}

.btn-secondary:hover {
    background-color: var(--color-secondary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(34, 197, 94, 0.25);
}

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

.btn-outline:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-1px);
}

.btn-accent {
    background-color: var(--color-accent);
    color: white;
    box-shadow: 0 1px 2px rgba(245, 158, 11, 0.25);
}

.btn-accent:hover {
    background-color: var(--color-accent-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(245, 158, 11, 0.25);
}

.btn-lg {
    padding: 1.2rem 3.2rem;
    font-size: 1.8rem;
}

/* ---------- HEADER & NAVIGATION ---------- */
.site-header {
    background-color: white;
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    height: 8rem;
    display: flex;
    align-items: center;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 4rem;
    width: auto;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 3.2rem;
}

.main-nav a {
    color: var(--color-neutral-700);
    font-weight: 500;
    font-size: 1.6rem;
    position: relative;
    padding: 0.8rem 0;
    transition: color var(--transition-fast) ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-primary);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-fast) ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.main-nav a.btn {
    padding: 0.8rem 1.6rem;
}

.main-nav a.btn::after {
    display: none;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    width: 4rem;
    height: 4rem;
    cursor: pointer;
    position: relative;
    z-index: 110;
}

.mobile-menu-toggle span {
    display: block;
    width: 2.4rem;
    height: 2px;
    background-color: var(--color-neutral-800);
    margin: 5px auto;
    transition: all var(--transition-fast) ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- HERO SECTION ---------- */
.hero {
    padding: 16rem 0 12rem;
    position: relative;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.5)), url('../img/aD87Ph.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
    color: white;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 60%;
    height: 80%;
    background: radial-gradient(circle, rgba(53, 99, 233, 0.2) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 50%;
    height: 70%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: 1;
}

.hero-content {
    max-width: 64rem;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    margin-bottom: 2.4rem;
    animation: fadeInUp 0.8s ease-out;
    color: white;
}

.hero p {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 4rem;
    animation: fadeInUp 0.8s ease-out 0.2s;
    animation-fill-mode: both;
}

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

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.6rem;
    animation: fadeInUp 0.8s ease-out 0.4s;
    animation-fill-mode: both;
}

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

/* ---------- ABOUT SECTION ---------- */
.about {
    background-color: white;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6.4rem;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -2rem;
    right: -2rem;
    width: 12rem;
    height: 12rem;
    background-color: var(--color-primary-light);
    opacity: 0.1;
    border-radius: var(--border-radius-lg);
    z-index: -1;
}

.about-image::after {
    content: '';
    position: absolute;
    bottom: -2rem;
    left: -2rem;
    width: 12rem;
    height: 12rem;
    background-color: var(--color-accent);
    opacity: 0.1;
    border-radius: var(--border-radius-lg);
    z-index: -1;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
}

/* ---------- FEATURES SECTION ---------- */
.features {
    background-color: var(--color-neutral-50);
    position: relative;
    overflow: hidden;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3.2rem;
}

.feature-card {
    background-color: white;
    padding: 4rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium) ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 6.4rem;
    height: 6.4rem;
    margin-bottom: 2.4rem;
    border-radius: var(--border-radius-md);
    background-color: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* ---------- SERVICES SECTION ---------- */
.services {
    background-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3.2rem;
}

.service-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-medium) ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-image {
    position: relative;
    width: 100%;
    height: 24rem;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium) ease;
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-content {
    padding: 3.2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.service-title h3 {
    font-size: 2.4rem;
    margin-bottom: 0;
}

.service-price {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    background-color: var(--color-primary-light);
    color: white;
    font-size: 1.4rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
}

.service-content p {
    margin-bottom: 2.4rem;
}

.service-content ul {
    margin-bottom: 2.4rem;
}

.service-content li {
    margin-bottom: 0.8rem;
    padding-left: 2.8rem;
    position: relative;
    color: var(--color-neutral-700);
}

.service-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.8rem;
    width: 0.6rem;
    height: 0.6rem;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.service-content .btn {
    margin-top: auto;
}

/* ---------- TESTIMONIALS SECTION ---------- */
.testimonials {
    background-color: var(--color-neutral-50);
    position: relative;
    overflow: hidden;
}

.testimonial-slider {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3.2rem;
}

.testimonial-item {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: 4rem;
    box-shadow: var(--shadow-md);
    position: relative;
}

.testimonial-content {
    margin-bottom: 3.2rem;
    position: relative;
}

.testimonial-content::before {
    content: '"';
    position: absolute;
    top: -2rem;
    left: -1rem;
    font-size: 8rem;
    line-height: 1;
    font-family: Georgia, serif;
    color: var(--color-primary);
    opacity: 0.2;
}

.testimonial-content p {
    font-size: 1.8rem;
    color: var(--color-neutral-800);
    margin-bottom: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 6.4rem;
    height: 6.4rem;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 1.6rem;
    border: 3px solid var(--color-neutral-100);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.8rem;
    margin-bottom: 0.4rem;
}

.author-position {
    font-size: 1.4rem;
    color: var(--color-neutral-500);
}

/* ---------- CONTACT SECTION ---------- */
.contact-form-section {
    background-color: white;
}

.contact-form-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6.4rem;
    align-items: center;
}

.contact-info h3 {
    margin-bottom: 2.4rem;
}

.contact-info p {
    margin-bottom: 3.2rem;
}

.contact-info ul {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    font-size: 1.8rem;
}

.contact-info li i {
    margin-right: 1.6rem;
    color: var(--color-primary);
    font-size: 2.4rem;
}

.contact-form {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: 4rem;
    box-shadow: var(--shadow-lg);
}

.form-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    padding: 1.6rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 2.4rem;
    font-weight: 500;
    border-left: 4px solid var(--color-error);
}

.form-group {
    margin-bottom: 2.4rem;
}

.form-label {
    display: block;
    margin-bottom: 0.8rem;
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--color-neutral-800);
}

.form-control {
    width: 100%;
    padding: 1.2rem 1.6rem;
    font-size: 1.6rem;
    color: var(--color-neutral-800);
    background-color: var(--color-neutral-50);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast) ease;
    font-family: var(--font-sans);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(53, 99, 233, 0.1);
}

.form-select {
    width: 100%;
    padding: 1.2rem 1.6rem;
    font-size: 1.6rem;
    color: var(--color-neutral-800);
    background-color: var(--color-neutral-50);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast) ease;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.6rem center;
    background-size: 16px 12px;
    font-family: var(--font-sans);
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.6rem;
}

.checkbox-container input {
    margin-top: 0.4rem;
}

.checkbox-label {
    font-size: 1.4rem;
    color: var(--color-neutral-700);
}

.checkbox-label a {
    font-weight: 500;
}

/* ---------- FAQ SECTION ---------- */
.faq {
    background-color: var(--color-neutral-50);
}

.accordion {
    max-width: 80rem;
    margin: 0 auto;
}

.accordion-item {
    background-color: white;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    margin-bottom: 1.6rem;
    box-shadow: var(--shadow-sm);
}

.accordion-header {
    padding: 2.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-neutral-800);
    transition: all var(--transition-fast) ease;
}

.accordion-header::after {
    content: '+';
    font-size: 2.4rem;
    color: var(--color-primary);
    transition: all var(--transition-fast) ease;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 2.4rem;
    transition: all var(--transition-medium) ease;
}

.accordion-item.active .accordion-header {
    background-color: var(--color-primary);
    color: white;
}

.accordion-item.active .accordion-header::after {
    content: '−';
    color: white;
}

.accordion-item.active .accordion-content {
    max-height: 50rem;
    padding: 0 2.4rem 2.4rem;
}

/* ---------- FOOTER ---------- */
.site-footer {
    background-color: var(--color-neutral-800);
    padding: 8rem 0 2.4rem;
    color: var(--color-neutral-300);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 8rem;
    margin-bottom: 6.4rem;
}

.footer-logo {
    margin-bottom: 2.4rem;
}

.footer-logo img {
    height: 4rem;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-description {
    max-width: 36rem;
    margin-bottom: 2.4rem;
}

.footer-social {
    display: flex;
    gap: 1.6rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1.8rem;
    transition: all var(--transition-fast) ease;
}

.footer-social a:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-3px);
}

.footer-contact h3,
.footer-links h3 {
    color: white;
    font-size: 2rem;
    margin-bottom: 2.4rem;
}

.footer-contact ul li,
.footer-links ul li {
    margin-bottom: 1.2rem;
}

.footer-contact ul li a,
.footer-links ul li a {
    color: var(--color-neutral-300);
    transition: color var(--transition-fast) ease;
}

.footer-contact ul li a:hover,
.footer-links ul li a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 2.4rem;
    border-top: 1px solid var(--color-neutral-700);
    color: var(--color-neutral-400);
    font-size: 1.4rem;
}

/* ---------- COOKIE CONSENT ---------- */
.cookie-consent {
    position: fixed;
    bottom: 2.4rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 48rem;
    background-color: white;
    padding: 2.4rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: none;
    opacity: 0;
    transition: opacity var(--transition-medium) ease;
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2.4rem;
}

.cookie-content p {
    margin-bottom: 0;
    font-size: 1.4rem;
    line-height: 1.5;
}

.cookie-content a {
    font-weight: 600;
}

.cookie-content button {
    flex-shrink: 0;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1200px) {
    html {
        font-size: 56.25%; /* 9px = 1rem */
    }
}

@media (max-width: 991px) {
    section {
        padding: 8rem 0;
    }
    
    h1 {
        font-size: 4.8rem;
    }
    
    h2 {
        font-size: 3.6rem;
    }
    
    .services-grid,
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .about-content,
    .contact-form-container {
        grid-template-columns: 1fr;
        gap: 4.8rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 4.8rem;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 50%; /* 8px = 1rem */
    }
    
    section {
        padding: 6.4rem 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 40rem;
        height: 100vh;
        background-color: white;
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-medium) ease;
        padding: 12rem 3.2rem 3.2rem;
        z-index: 90;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 2.4rem;
    }
    
    .main-nav ul li {
        width: 100%;
    }
    
    .main-nav ul li a {
        width: 100%;
        display: block;
        font-size: 2rem;
    }
    
    .hero {
        padding: 12rem 0 8rem;
    }
    
    .hero h1 {
        font-size: 4rem;
    }
    
    .testimonial-slider {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 4.8rem;
    }
}

@media (max-width: 576px) {
    .services-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
        gap: 1.6rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
}