/* --- Base & Variables --- */
:root {
    --primary-color: #00A896;
    --secondary-color: #02C39A;
    --accent-color: #007EA7;
    --dark-text: #1a202c;
    --medium-text: #4a5568;
    --light-bg: #ffffff;
    --light-bg-alt: #f0f4f8;
    --light-bg-card: #ffffff;
    --light-bg-form: #f7fafc;
    --light-border: #e2e8f0;
    --dark-bg: #1a202c;
    /* --- Old
    --dark-bg-alt: #2d3748;
    --- */
    --dark-bg-alt: #0a0c11;
    --dark-bg-card: #2d3748;
    --dark-bg-form: #2d3748;
    --dark-text-main: #edf2f7;
    --dark-text-secondary: #a0aec0;
    --dark-border: #4a5568;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light-bg);
    color: var(--dark-text);
    transition: background-color 0.3s, color 0.3s;
}

.dark body {
    background-color: var(--dark-bg);
    color: var(--dark-text-main);
}

.hidden {
    display: none;
}

/* --- Utility & Layout --- */
.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

@media (min-width: 640px) {
    .container { max-width: 640px; }
}
@media (min-width: 768px) {
    .container { max-width: 768px; }
}
@media (min-width: 1024px) {
    .container { max-width: 1024px; }
}
@media (min-width: 1280px) {
    .container { max-width: 1280px; }
}

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

/* --- Buttons & Links --- */
.btn {
    display: inline-block;
    font-weight: 700;
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    transition: opacity 0.3s ease;
    text-decoration: none;
    color: white;
}

.btn:hover {
    opacity: 0.9;
}

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

.btn-accent {
    background-color: var(--accent-color);
    box-shadow: 0 4px 14px 0 rgba(0, 126, 167, 0.3);
}

.nav-link {
    color: var(--medium-text);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.dark .nav-link {
    color: var(--dark-text-secondary);
}

.dark .nav-link:hover {
    color: white;
}

/* --- Header --- */
.header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.07);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: background-color 0.3s;
}

.dark .header {
    background-color: rgba(10, 12, 17, 0.8);
    /* --- Old Dark Header
    background-color: rgba(26, 32, 44, 0.8);
    --- */
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

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

.logo-container img {
    height: 5rem;
    width: auto;
}

.logo-dark { display: none; }
.dark .logo-dark { display: block; }
.dark .logo-light { display: none; }

.header-actions {
    display: flex;
    align-items: center;
}

.header-nav {
    display: none;
    gap: 2rem;
    margin-right: 2rem;
}

@media (min-width: 768px) {
    .header-nav { display: flex; }
}

.cta-desktop { display: none; }
@media (min-width: 768px) {
    .cta-desktop { display: inline-block; }
}

/* --- Theme Toggle & Mobile Menu --- */
.theme-toggle-btn, .mobile-menu-btn {
    background-color: transparent;
    border: none;
    cursor: pointer;
    padding: 0.625rem;
    border-radius: 0.5rem;
}

.theme-toggle-btn { margin-right: 1rem; }
.mobile-menu-btn { margin-left: 1rem; }

.theme-toggle-btn:hover { background-color: #f3f4f6; }
.dark .theme-toggle-btn:hover { background-color: #4a5568; }

.icon {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-toggle-btn .icon { color: #6b7280; }
.dark .theme-toggle-btn .icon { color: #9ca3af; }
#theme-toggle-dark-icon { display: none; }
.dark #theme-toggle-dark-icon { display: block; }
.dark #theme-toggle-light-icon { display: none; }

.mobile-menu-btn .icon { color: var(--dark-text); }
.dark .mobile-menu-btn .icon { color: white; }
@media (min-width: 768px) {
    .mobile-menu-btn { display: none; }
}

.mobile-menu {
    padding: 0 1.5rem 1rem;
    border-top: 1px solid var(--light-border);
}
.dark .mobile-menu { border-top-color: var(--dark-border); }

.mobile-nav-link {
    display: block;
    padding: 0.5rem 0;
}

.cta-mobile {
    display: block;
    text-align: center;
    margin-top: 1rem;
}

/* --- Sections --- */
.section-eyebrow {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle, .section-text {
    color: var(--medium-text);
}
.dark .section-subtitle, .dark .section-text {
    color: var(--dark-text-secondary);
}

.section-subtitle {
    max-width: 42rem;
    margin: 1rem auto 0;
}

.section-text {
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* --- Hero Section --- */
.hero-section {
    background-color: var(--light-bg-alt);
    padding: 5rem 0 6rem;
}

.dark .hero-section { background-color: var(--dark-bg); }

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    max-width: 48rem;
    margin: 0 auto 2rem;
    color: var(--medium-text);
}
.dark .hero-subtitle { color: var(--dark-text-secondary); }

.hero-cta {
    font-size: 1.125rem;
    padding: 0.75rem 2rem;
}

/* --- About Section --- */
.about-section {
    padding: 5rem 0;
}

.about-container {
    display: grid;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .about-container { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 2.25rem; }
    .hero-title { font-size: 3.75rem; }
}

.about-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
}

/* --- Services Section --- */
.services-section {
    padding: 5rem 0;
    background-color: #f7fafc;
}
.dark .services-section { background-color: var(--dark-bg-alt); }

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    gap: 2rem;
}
@media (min-width: 768px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
    background-color: var(--light-bg-card);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dark .service-card {
    background-color: var(--dark-bg-card);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.service-icon-wrapper {
    display: inline-block;
    padding: 1rem;
    border-radius: 9999px;
    background-color: var(--accent-color);
    margin-bottom: 1rem;
}

.service-icon {
    width: 2rem;
    height: 2rem;
    color: white;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.service-description {
    color: var(--medium-text);
}
.dark .service-description {
    color: var(--dark-text-secondary);
}

/* --- Contact Section --- */
.contact-section {
    padding: 5rem 0;
}

.contact-form-wrapper {
    max-width: 45rem;
    margin: 0 auto;
    background-color: #f7fafc;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1)/* ---, 0 10px 10px -5px rgba(0,0,0,0.04);--- */
}
.dark .contact-form-wrapper {
    background-color: var(--dark-bg-alt);
}

@media (min-width: 768px) {
    .contact-form-wrapper { padding: 3rem; }
}

.form-grid {
    display: grid;
    gap: 3rem;
}
@media (min-width: 768px) {
    .form-grid { grid-template-columns: repeat(2, 1fr); }
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--medium-text);
}
.dark .form-label {
    color: var(--dark-text-secondary);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: #edf2f7;
    border: 1px solid var(--light-border);
    border-radius: 0.5rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.dark .form-input, .dark .form-textarea {
    background-color: #4a5568;
    border-color: #718096;
    color: white;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: transparent;
    box-shadow: 0 0 0 2px #3b82f6;
}

.form-footer {
    text-align: center;
    margin-top: 2rem;
}

/* --- Footer --- */
.footer {
    background-color: var(--dark-bg-alt);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1rem;
}
.footer-logo-container img {
    height: 5rem;
}
.footer-copyright {
    color: #a0aec0;
}
.footer-tagline {
    color: #718096;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}