/* CSS Variables - Design Tokens */
:root {
    /* Color Palette (Based on IMG_4504) */
    --clr-bg: #F4EFEB; /* Very Soft Beige */
    --clr-bg-alt: #E8DFD5; /* Darker Beige */
    --clr-primary: #6B4433; /* Chestnut Brown (Blazer) */
    --clr-primary-dark: #4F3124;
    --clr-text-main: #291E18; /* Espresso */
    --clr-text-light: #5E4A3F;
    --clr-white: #FFFFFF;
    --clr-accent: #D4C1B3;
    
    /* Typography */
    --font-sans: 'Outfit', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    /* Spacing & Layout */
    --section-spacing: 120px;
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --transition: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Dark Mode Theme */
body[data-theme="dark"] {
    --clr-bg: #1A1310; /* Very dark espresso */
    --clr-bg-alt: #261D18;
    --clr-primary: #B88E7B; /* Light Mocha */
    --clr-primary-dark: #A17663;
    --clr-text-main: #F4EFEB;
    --clr-text-light: #C0B0A6;
    --clr-white: #33261F;
    --clr-accent: #4F3124;
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--clr-bg);
    color: var(--clr-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--clr-text-main);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

p {
    color: var(--clr-text-light);
    margin-bottom: 1.2rem;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.bg-light {
    background-color: var(--clr-bg-alt);
}

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

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

.mt-4 {
    margin-top: 3rem;
}

.subtitle {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--clr-primary);
    margin-bottom: 1rem;
}

.highlight {
    color: var(--clr-primary);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--clr-primary);
    color: var(--clr-white);
    box-shadow: 0 8px 24px rgba(181, 131, 113, 0.25);
}

.btn-primary:hover {
    background-color: var(--clr-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(181, 131, 113, 0.35);
}

.btn-outline {
    background-color: transparent;
    border: 1.5px solid var(--clr-text-main);
    color: var(--clr-text-main);
}

.btn-outline:hover {
    background-color: var(--clr-text-main);
    color: var(--clr-white);
}

.btn-text {
    background-color: transparent;
    color: var(--clr-text-main);
    padding: 14px 0;
    position: relative;
}

.btn-text span {
    margin-left: 8px;
    transition: var(--transition);
}

.btn-text:hover span {
    transform: translateX(5px);
}

.btn-block {
    width: 100%;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
    background-color: rgba(252, 250, 248, 0.9);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-text-main);
    font-style: italic;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--clr-text-light);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--clr-primary);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--clr-text-main);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Theme Toggle */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--clr-text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: rgba(0,0,0,0.05);
}

body[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255,255,255,0.05);
}

body[data-theme="dark"] .navbar {
    background-color: rgba(26, 24, 23, 0.9);
}

body[data-theme="dark"] .form-group input,
body[data-theme="dark"] .form-group select {
    background-color: #242120;
    border-color: rgba(255,255,255,0.1);
}

body[data-theme="dark"] footer,
body[data-theme="dark"] .footer-bottom {
    border-color: rgba(255,255,255,0.05);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 120px 24px 60px;
    gap: 40px;
}

.hero-content {
    flex: 1;
}

.hero h1 {
    font-size: clamp(3.5rem, 5vw, 5rem);
    margin-bottom: 1.5rem;
    max-width: 600px;
}

.hero p {
    font-size: 1.15rem;
    max-width: 500px;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: 24px;
}

.hero-image {
    flex: 1;
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 200px 200px 0 0;
    overflow: hidden;
    aspect-ratio: 4/5;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 24px;
}

.about p {
    font-size: 1.1rem;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.stat-box {
    background: var(--clr-white);
    padding: 32px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0,0,0,0.03);
    border-left: 4px solid var(--clr-primary);
}

.stat-box h3 {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    margin-bottom: 8px;
}

/* Services Section */
.services h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--clr-white);
    padding: 48px 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px rgba(0,0,0,0.04);
    transition: var(--transition);
    text-align: left;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(181, 131, 113, 0.15);
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: var(--clr-accent);
    color: var(--clr-text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

/* Portfolio Section */
.portfolio h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.portfolio-item {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transform: translateZ(0);
}

.portfolio-item img {
    width: 100%;
    height: auto;
    display: block;
    backface-visibility: hidden;
    transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: flex-end;
    padding: 32px;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-info {
    transform: translateY(0);
}

.portfolio-info h4 {
    color: var(--clr-white);
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.portfolio-info p {
    color: var(--clr-accent);
    margin: 0;
}

/* Case Study Layout */
.case-study-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 64px;
}

.case-image-large {
    width: 100%;
    overflow: hidden;
}

.case-image-large img {
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

.case-content h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.case-services-list {
    list-style: none;
    padding: 0;
}

.case-services-list li {
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
    color: var(--clr-text-light);
}

.case-services-list li::before {
    content: '✨';
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.9rem;
}

/* Contact Section */
.contact-card {
    background: var(--clr-primary);
    border-radius: var(--border-radius-lg);
    padding: 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    color: var(--clr-white);
}

.contact-info h2 {
    color: var(--clr-white);
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 24px;
}

.contact-info p {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
}

.contact-form {
    background: var(--clr-white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-family: var(--font-sans);
    font-weight: 500;
    color: var(--clr-text-main);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 16px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
    background-color: #FAFAFA;
    color: var(--clr-text-main);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--clr-primary);
    background-color: var(--clr-white);
    box-shadow: 0 0 0 4px rgba(181, 131, 113, 0.1);
}

/* Multi-step Form */
.form-progress {
    display: flex;
    align-items: center;
    margin-bottom: 28px;
}

.progress-step {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--clr-accent);
    color: var(--clr-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
    transition: var(--transition);
}

.progress-step.active {
    background: var(--clr-primary);
    color: #fff;
}

.progress-step.completed {
    background: var(--clr-primary-dark);
    color: #fff;
}

.progress-line {
    flex: 1;
    height: 2px;
    background: var(--clr-accent);
    transition: background 0.4s ease;
}

.progress-line.completed {
    background: var(--clr-primary-dark);
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeStep 0.25s ease;
}

@keyframes fadeStep {
    from { opacity: 0; transform: translateX(12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.step-label {
    font-size: 0.78rem;
    color: var(--clr-text-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 20px;
}

.confirm-subtitle {
    font-size: 0.88rem;
    color: var(--clr-text-light);
    margin-bottom: 14px;
}

.message-preview {
    background: var(--clr-surface, #f5f5f5);
    border: 1px solid var(--clr-border, #e0e0e0);
    border-radius: 10px;
    padding: 16px 18px;
    font-size: 0.9rem;
    line-height: 1.7;
    white-space: pre-wrap;
    color: var(--clr-text);
}

.label-optional {
    opacity: 0.6;
    font-weight: 400;
}

.form-nav {
    display: flex;
    gap: 12px;
}

.form-nav .btn-outline {
    color: var(--clr-primary);
    border-color: var(--clr-primary);
    flex-shrink: 0;
}

.form-nav .btn-primary {
    flex: 1;
}

/* Footer */
footer {
    padding: 60px 0 24px;
    background-color: var(--clr-bg);
    border-top: 1px solid rgba(0,0,0,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    margin-bottom: 4px;
}

.footer-social a {
    font-weight: 500;
    color: var(--clr-text-light);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.footer-bottom p {
    font-size: 0.875rem;
    margin: 0;
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

body[data-theme="dark"] .faq-item {
    border-color: rgba(255,255,255,0.07);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    gap: 16px;
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--clr-text-main);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--clr-primary);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--clr-primary);
    transition: transform 0.35s ease;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

.faq-answer p {
    margin: 0;
    line-height: 1.8;
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #25D366;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: waPulse 3s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.12) translateY(-2px);
    box-shadow: 0 14px 36px rgba(37, 211, 102, 0.55);
    animation: none;
}

@keyframes waPulse {
    0%, 100% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4); }
    50%       { box-shadow: 0 8px 32px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.08); }
}

/* Exit Intent Popup */
.exit-popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(4px);
}

.exit-popup-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

.exit-popup {
    background: var(--clr-bg);
    border-radius: var(--border-radius-lg);
    padding: 48px 40px 40px;
    max-width: 440px;
    width: 90%;
    text-align: center;
    position: relative;
    transform: translateY(24px) scale(0.96);
    transition: transform 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    box-shadow: 0 32px 64px rgba(0,0,0,0.2);
}

.exit-popup-overlay.visible .exit-popup {
    transform: translateY(0) scale(1);
}

.exit-popup h3 {
    font-size: 1.8rem;
    margin: 8px 0 16px;
}

.exit-popup p {
    margin-bottom: 28px;
    font-size: 1rem;
    line-height: 1.7;
}

.exit-popup-close {
    position: absolute;
    top: 14px;
    right: 18px;
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--clr-text-light);
    transition: var(--transition);
    padding: 4px 6px;
    line-height: 1;
}

.exit-popup-close:hover {
    color: var(--clr-text-main);
}

.exit-popup-skip {
    display: block;
    margin: 14px auto 0;
    background: none;
    border: none;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--clr-text-light);
    cursor: pointer;
    text-decoration: underline;
    transition: var(--transition);
}

.exit-popup-skip:hover {
    color: var(--clr-text-main);
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
    will-change: auto;
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        flex-direction: column-reverse;
        padding-top: 100px;
        text-align: center;
        gap: 30px;
    }
    .hero h1 {
        font-size: clamp(2.5rem, 8vw, 3.5rem);
        margin-left: auto;
        margin-right: auto;
    }
    .hero p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }
    .about-grid, .contact-card, .case-study-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .contact-card {
        padding: 40px 24px;
    }
    .case-image-large img {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; 
    }
    .section {
        padding: 80px 0;
    }
    .portfolio-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    .hero {
        padding-top: 100px;
    }
    .contact-card {
        padding: 32px 16px;
    }
    .about-stats {
        gap: 16px;
    }
    .case-content h3 {
        font-size: 1.5rem;
    }
}