/* --- Global Styles & Variables --- */
:root {
    /* MODERN DARK THEME PALETTE */
    --primary-accent: #00AFFF; /* Vibrant Electric Blue - Main Accent */
    --secondary-accent: #0077B6; /* A slightly deeper blue for support */
    --cta-accent: #00D4FF; /* Brightest blue for main CTAs */

    --bg-dark-primary: #121212; /* Very dark main background */
    --bg-dark-secondary: #1E1E1E; /* Slightly lighter dark for cards, header */
    --bg-dark-tertiary: #2A2A2A; /* For subtle contrasts or hover states on cards */

    --text-light-primary: #F5F5F5; /* Main light text (off-white) */
    --text-light-secondary: #B0B0B0; /* Lighter gray for secondary text */
    --text-dark-placeholder: #777777; /* For form placeholders */

    --border-color-dark: #333333; /* Subtle borders */
    --border-accent: #00AFFF40; /* Accent border with transparency */

    --heading-font: 'Montserrat', sans-serif;
    --body-font: 'Lato', sans-serif;
    --box-shadow: 0 6px 20px rgba(0, 175, 255, 0.1);
    --box-shadow-strong: 0 8px 25px rgba(0, 175, 255, 0.15);
    --transition-main: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Basic Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    line-height: 1.7;
    color: var(--text-light-primary);
    background-color: var(--bg-dark-primary);
    font-size: 16px;
    overflow-x: hidden; /* Prevent horizontal scrollbars from off-screen animations */
}

/* --- Utility Classes --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    align-items: center;
}

@media (min-width: 768px) {
    .content-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    .about-section .content-grid {
        grid-template-columns: 2fr 1fr;
    }
    .about-image {
        justify-self: end;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    color: var(--text-light-primary);
    margin-bottom: 15px;
    line-height: 1.3;
}

h2 {
    font-size: 2.2em;
    text-align: center;
    margin-bottom: 40px;
    color: var(--primary-accent);
    position: relative;
    padding-bottom: 10px;
}
h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-accent);
    opacity: 0.7;
}

h3 { font-size: 1.6em; color: var(--primary-accent); }

p {
    margin-bottom: 15px;
    color: var(--text-light-secondary);
}

a {
    text-decoration: none;
    color: var(--primary-accent);
    transition: color 0.3s ease;
}
a:hover {
    color: var(--cta-accent);
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
}

ul {
    list-style: none;
    padding-left: 0;
}

/* --- Header & Navigation --- */
header {
    background-color: var(--bg-dark-secondary);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    border-bottom: 1px solid var(--border-color-dark);
    transition: background-color 0.3s ease, transform 0.3s ease; /* For animations and scroll effects */
}
/* Optional: Scrolled header style example */
/* header.scrolled { background-color: rgba(30, 30, 30, 0.95); backdrop-filter: blur(5px); } */


.logo { /* Header text logo */
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary-accent);
    transition: transform 0.3s ease;
}
.logo:hover {
    transform: scale(1.05);
}

.nav-links { display: flex; }
.nav-links li { margin-left: 25px; }
.nav-links a {
    font-weight: 500;
    color: var(--text-light-primary);
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease, transform 0.3s ease;
}
.nav-links a:hover {
    color: var(--cta-accent);
    transform: translateY(-2px);
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-accent);
    transition: width 0.3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--primary-accent); }

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.8em;
    color: var(--primary-accent);
    cursor: pointer;
    transition: transform 0.3s ease;
}
.hamburger:hover {
    transform: scale(1.1);
}

/* --- Section Styling --- */
section { padding: 80px 0; }
.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px auto;
    font-size: 1.1em;
    color: var(--text-light-secondary);
}

/* --- Hero Section --- */
.hero-section {
    background: linear-gradient(135deg, var(--bg-dark-primary) 0%, #071a2a 100%);
    color: var(--text-light-primary);
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
}
.hero-section .container {
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hero-logo { /* Already has animation logic applied directly via JS classes */
    max-width: 450px;
    width: 85%;
    margin-bottom: 30px;
    /* opacity and transform are handled by JS-added classes */
}
.hero-section .subtitle { /* Specific class for subtitle animation */
    font-size: 1.3em;
    margin-bottom: 30px;
    color: var(--text-light-secondary);
    /* opacity and transform are handled by JS-added classes */
}
/* Keyframes for .animated-logo, .animated-subtitle, .animated-cta were provided before and should remain */
/* Example (ensure these exist from previous steps): */
.animated-logo { animation: fadeInScaleUp 1s ease-out 0.3s forwards; }
@keyframes fadeInScaleUp { to { opacity: 1; transform: scale(1) translateY(0); } }
.animated-subtitle { animation: fadeInSlideUp 0.8s ease-out 0.8s forwards; }
.animated-cta { animation: fadeInSlideUp 0.8s ease-out 1.1s forwards; }
@keyframes fadeInSlideUp { to { opacity: 1; transform: translateY(0); } }


/* --- ANIMATION DEFINITIONS & PREPARATION --- */
.animate-prepare {
    opacity: 0;
    will-change: transform, opacity;
}
.animated.is-visible { /* This class is added by JS when element is intersecting */
    opacity: 1;
    transform: translate(0, 0) scale(1) !important; /* Reset transforms */
}

/* Specific Animation Styles (applied by JS via data-animation attribute) */
.animate-prepare.fade-in {
    transition: opacity 0.8s ease-out;
}
.animate-prepare.fade-in-up {
    transform: translateY(30px);
    transition: opacity 0.7s ease-out, transform 0.7s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.animate-prepare.slide-up {
    transform: translateY(40px);
    transition: opacity 0.7s ease-out, transform 0.7s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.animate-prepare.slide-in-left {
    transform: translateX(-60px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.animate-prepare.slide-in-right {
    transform: translateX(60px);
    transition: opacity 0.8s ease-out, transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.animate-prepare.scale-in {
    transform: scale(0.85);
    transition: opacity 0.7s ease-out, transform 0.7s cubic-bezier(0.165, 0.84, 0.44, 1);
}


/* --- Call to Action Buttons --- */
.cta-button, .cta-button-secondary {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 30px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-main), border-color 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 0.95em;
    position: relative;
}
.cta-button {
    background-color: var(--primary-accent);
    color: var(--bg-dark-primary);
    border-color: var(--primary-accent);
}
.cta-button:hover {
    background-color: var(--cta-accent);
    border-color: var(--cta-accent);
    color: var(--bg-dark-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--box-shadow-strong);
}
.cta-button-secondary {
    background-color: transparent;
    color: var(--primary-accent);
    border: 2px solid var(--primary-accent);
}
.cta-button-secondary:hover {
    background-color: var(--primary-accent);
    color: var(--bg-dark-primary);
    transform: translateY(-2px);
}

/* --- About Section --- */
.about-section { background-color: var(--bg-dark-primary); }
.about-image img {
    box-shadow: 0 0 30px rgba(0, 175, 255, 0.15);
    max-width: 350px;
    margin: 0 auto;
    border: 2px solid var(--border-accent);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.about-image img:hover {
    transform: scale(1.03);
    box-shadow: 0 0 40px rgba(0, 175, 255, 0.25);
}
.about-text ul { margin-top: 20px; }
.about-text ul li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    color: var(--text-light-secondary);
    transition: color 0.3s ease;
}
.about-text ul li:hover { color: var(--text-light-primary); }
.about-text ul li i {
    color: var(--primary-accent);
    margin-right: 10px;
    font-size: 1.2em;
    flex-shrink: 0;
    transition: transform 0.3s ease, color 0.3s ease;
}
.about-text ul li:hover i {
    transform: scale(1.2) rotate(-10deg);
    color: var(--cta-accent);
}

/* --- Services Section --- */
.services-section { background-color: var(--bg-dark-secondary); }
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.service-card {
    background-color: var(--bg-dark-tertiary);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition-main), border-color 0.3s ease;
    border: 1px solid var(--border-color-dark);
}
.service-card:hover {
    transform: translateY(-8px); /* More lift */
    box-shadow: var(--box-shadow-strong);
    background-color: #303030;
    border-color: var(--primary-accent);
}
.service-icon {
    color: var(--primary-accent);
    margin-bottom: 20px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.service-card:hover .service-icon {
    transform: scale(1.15) translateY(-5px) rotate(5deg);
}
.service-card h3 { color: var(--text-light-primary); }

/* --- Portfolio Section --- */
.portfolio-section { background-color: var(--bg-dark-primary); }
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.portfolio-item {
    background-color: var(--bg-dark-secondary);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    transition: var(--transition-main), border-color 0.3s ease;
    border: 1px solid var(--border-color-dark);
}
.portfolio-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--box-shadow-strong);
    border-color: var(--primary-accent);
}
.portfolio-item img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    margin-bottom: 15px;
    border-bottom: 3px solid var(--primary-accent);
    transition: transform 0.5s ease;
}
.portfolio-item:hover img { transform: scale(1.05); }
.portfolio-item h3 { margin-bottom: 10px; color: var(--text-light-primary); }
.portfolio-item p {
    font-size: 0.95em;
    margin-bottom: 15px;
    flex-grow: 1;
    color: var(--text-light-secondary);
}

/* --- Testimonials Section --- */
.testimonials-section { background-color: var(--bg-dark-secondary); }
.testimonial-wrapper { /* Added this wrapper in HTML for staggering */
    /* No specific styles needed here unless for layout */
}
.testimonial-card {
    background-color: var(--bg-dark-tertiary);
    padding: 25px 30px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    margin-bottom: 25px;
    border-left: 5px solid var(--primary-accent);
    transition: var(--transition-main), border-left-color 0.3s ease;
}
.testimonial-card:hover {
    transform: scale(1.02) translateX(5px);
    border-left-color: var(--cta-accent);
    box-shadow: var(--box-shadow-strong);
}
.testimonial-card blockquote {
    font-style: italic;
    font-size: 1.1em;
    margin-bottom: 15px;
    position: relative;
    padding-left: 25px;
    color: var(--text-light-primary);
}
.testimonial-card blockquote::before {
    content: '\201C';
    font-size: 3em;
    font-family: 'Times New Roman', Times, serif;
    color: var(--primary-accent);
    position: absolute;
    left: -5px;
    top: -15px;
    opacity: 0.8;
}
.testimonial-author {
    font-weight: bold;
    text-align: right;
    color: var(--primary-accent);
    font-size: 0.95em;
}

/* --- Contact Section --- */
.contact-section { background-color: var(--bg-dark-primary); }
#contact-form {
    max-width: 700px;
    margin: 0 auto 40px auto;
    background-color: var(--bg-dark-secondary);
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--border-color-dark);
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--primary-accent);
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color-dark);
    border-radius: 5px;
    font-family: var(--body-font);
    font-size: 1em;
    background-color: var(--bg-dark-tertiary);
    color: var(--text-light-primary);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}
.form-group input::placeholder, .form-group textarea::placeholder {
    color: var(--text-dark-placeholder);
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 3px rgba(0, 175, 255, 0.3), 0 0 10px rgba(0, 175, 255, 0.1);
    transform: scale(1.01); /* Subtle scale on focus */
}
.contact-info { text-align: center; margin-top: 40px; }
.contact-info p {
    font-size: 1.1em;
    margin-bottom: 10px;
    color: var(--text-light-secondary);
}
.contact-info i {
    margin-right: 10px;
    color: var(--primary-accent);
    font-size: 1.2em;
}
.contact-info a { color: var(--primary-accent); }
.contact-info a:hover {
    color: var(--cta-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* --- Footer --- */
footer {
    background-color: var(--bg-dark-secondary);
    color: var(--text-light-secondary);
    text-align: center;
    padding: 30px 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color-dark);
}
footer p { margin-bottom: 5px; opacity: 0.8; font-size: 0.9em; }
footer a { color: var(--primary-accent); }
footer a:hover {
    color: var(--cta-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    h2 { font-size: 1.8em; }
    .nav-links {
        display: none; flex-direction: column; width: 100%;
        position: absolute; top: 100%; left: 0;
        background-color: var(--bg-dark-secondary);
        box-shadow: 0 5px 10px rgba(0,0,0,0.2);
        padding-bottom: 10px; border-top: 1px solid var(--border-color-dark);
    }
    .nav-links.active { display: flex; }
    .nav-links li { margin: 10px 0; text-align: center; }
    .nav-links a { padding: 10px 0; }
    .hamburger { display: block; }

    .about-section .content-grid { grid-template-columns: 1fr; }
    .about-image { justify-self: center; margin-top: 20px; }

    section { padding: 60px 0; }
    .hero-section { padding-top: 60px; min-height: 70vh; }
    .hero-logo { max-width: 300px; margin-bottom: 20px; }
    .hero-section .subtitle { font-size: 1.1em; }

    /* Adjust slide-in animations for mobile */
    .animate-prepare.slide-in-left,
    .animate-prepare.slide-in-right {
        transform: translateX(0) translateY(30px); /* Change side slides to up slides */
    }
}

@media (max-width: 480px) {
    .hero-logo { max-width: 250px; }
    .hero-section .subtitle { font-size: 1em; }
    .cta-button, .cta-button-secondary { padding: 12px 25px; font-size: 0.9em; }
    .service-card, .portfolio-item, .testimonial-card { padding: 20px; }
    #contact-form { padding: 25px; }
    h2 { font-size: 1.6em; }
    h2::after { width: 60px; }
    .logo { font-size: 1.3em; }
}