/* --- DESIGN FOUNDATION & VARIABLES --- */
:root {
    --coral-pink: #FF6B6B;
    --light-teal: #4ECDC4;
    --charcoal: #333333;
    --off-white: #F9F9F9;
    --white: #FFFFFF;
    --font-headline: 'Poppins', sans-serif;
    --font-body: 'Lato', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--charcoal);
    overflow-x: hidden;
}

/* --- UTILITY & SHARED CLASSES --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 80px 20px;
}

h1, h2 {
    font-family: var(--font-headline);
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

p {
    line-height: 1.6;
    font-size: 1.1rem;
}

.button {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    font-family: var(--font-headline);
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
    border: none;
}

.button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.button-primary {
    background-color: var(--coral-pink);
    color: var(--white);
}

.button-secondary {
    background-color: transparent;
    color: var(--charcoal);
    border: 2px solid var(--charcoal);
}

/* --- HEADER & NAVIGATION --- */
.main-header {
    padding: 20px;
    position: sticky;
    width: 100%;
    top: 0;
    left: 0;
    background-color: var(--off-white);
    z-index: 1000;
    transition: box-shadow 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.main-header.scrolled {
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-headline);
    font-size: 1.8rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--charcoal);
    display: flex;
    align-items: center;
}

.logo-o-balloon {
    display: inline-block;
    width: 25px;
    height: 25px;
    background-color: var(--coral-pink);
    border-radius: 50%;
    margin: 0 2px;
    animation: float 6s ease-in-out infinite;
    transition: opacity 0.3s ease;
}

.main-nav a {
    text-decoration: none;
    color: var(--charcoal);
    margin-left: 30px;
    font-weight: 700;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--coral-pink);
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

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

.nav-quote-button {
    padding: 10px 20px;
    margin-left: 1rem;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0); }
}

.logo-o-balloon {
    display: inline-block;
    width: 25px;
    height: 25px;
    background: linear-gradient(135deg, var(--coral-pink) 0%, #ff5252 100%);
    border-radius: 50%;
    margin: 0 2px;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.logo-o-balloon:hover {
    transform: scale(1.1);
}

/* --- HERO & CONTENT SECTIONS --- */
#hero, #services, #ai-lab, #about {
    background-color: var(--off-white);
    position: relative;
    z-index: 2;
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero p {
    max-width: 600px;
    margin-bottom: 2rem;
}

.hero .button-secondary {
    margin-top: 1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    text-align: center;
}

.service-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* --- SIMULATOR SECTION --- */
.simulator-section {
    background: linear-gradient(135deg, var(--off-white) 0%, #ffffff 100%);
    padding: 100px 0;
    position: relative;
    z-index: 2;
}

.simulator-section h2 {
    color: var(--charcoal);
    margin-bottom: 1rem;
}

.simulator-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto 4rem;
    line-height: 1.6;
}

.slideshow-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 80px rgba(0,0,0,0.08), 0 10px 30px rgba(0,0,0,0.04);
}

.slideshow-display {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 3rem;
}

.gif-container {
    position: relative;
    background: #f8f8f8;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    aspect-ratio: 16/10;
}

.main-gif {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), transform 0.4s ease;
}

.gif-container:hover .main-gif {
    transform: scale(1.02);
}

.gif-overlay {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.step-indicator {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 0.9rem;
}

.slide-description h3 {
    font-family: var(--font-headline);
    font-size: 2.5rem;
    color: var(--charcoal);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.slide-description p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
}

.slideshow-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    background: #f8f8f8;
    border: 2px solid transparent;
    border-radius: 16px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 1rem;
    text-align: left;
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}

.tab-btn:hover::before {
    left: 100%;
}

.tab-btn:hover {
    background: #f0f0f0;
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--light-teal), var(--coral-pink));
    color: white;
    border-color: var(--light-teal);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(78,205,196,0.3);
}

.tab-btn.active .tab-icon {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.tab-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.tab-content h4 {
    font-family: var(--font-headline);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.tab-content p {
    font-size: 0.85rem;
    opacity: 0.8;
    margin: 0;
}

.tab-btn.active .tab-content p {
    opacity: 0.9;
}

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

.progress-bar {
    width: 100%;
    max-width: 500px;
    height: 6px;
    background-color: #e8e8e8;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--coral-pink), var(--light-teal));
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

.progress-text {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}

.simulator-cta {
    text-align: center;
    margin-top: 4rem;
}

/* --- PORTFOLIO SECTION --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

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

.portfolio-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white);
    padding: 2rem 1rem 1rem;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

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

.portfolio-caption h3 {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.portfolio-caption p {
    font-size: 1rem;
}

/* --- FOOTER & CONTACT FORM --- */
.main-footer {
    background-color: var(--charcoal);
    color: var(--off-white);
    text-align: center;
}

.main-footer h2 {
    color: var(--white);
}

.contact-form {
    max-width: 600px;
    margin: 2rem auto 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #555;
    background-color: #444;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #999;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-form .button {
    align-self: center;
    width: 200px;
}

/* --- PORTFOLIO / CASE STUDY SECTION --- */
#portfolio {
    background-color: var(--white);
}

.portfolio-subhead {
    text-align: center;
    max-width: 700px;
    margin: -2rem auto 4rem;
    font-size: 1.2rem;
}

.portfolio-case-study {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 5rem;
}

.case-study-image-large img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.case-study-tag {
    display: inline-block;
    background-color: var(--light-teal);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.case-study-content h3 {
    font-family: var(--font-headline);
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.case-study-content ul {
    list-style-position: inside;
    padding-left: 0;
    margin: 1.5rem 0;
}

.case-study-content li {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.case-study-content .button {
    margin-top: 1rem;
}

.portfolio-grid-small {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.case-study-small {
    background-color: var(--off-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-study-small:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.case-study-image-small img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-study-content-small {
    padding: 1.5rem;
}

.case-study-content-small .case-study-tag {
    background-color: var(--coral-pink);
}

.case-study-content-small h4 {
    font-family: var(--font-headline);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* --- SIMULATOR SECTION --- */

/* Responsive Design */
@media (max-width: 1024px) {
    .slideshow-display {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .slideshow-tabs {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .slideshow-wrapper {
        padding: 2rem 1.5rem;
    }
    
    .slide-description h3 {
        font-size: 2rem;
    }
    
    .slideshow-tabs {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .tab-btn {
        padding: 1.25rem;
    }
}