/* --- 1. Variables & Design System --- */
:root {
    /* Colors */
    --clr-bg-deep: #0f0720;
    --clr-primary: #a855f7;
    --clr-secondary: #38bdf8;
    --clr-accent: #f472b6;
    --clr-text-light: #f8fafc;
    --clr-text-muted: #94a3b8;
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, #ffffff 0%, var(--clr-secondary) 100%);
    --grad-glow: radial-gradient(circle at center, rgba(168, 85, 247, 0.4), transparent 70%);

    /* Typography (Fluid) */
    --font-main: "Manrope", sans-serif;
    --fs-h1: clamp(2.5rem, 6vw + 1rem, 4.5rem);
    --fs-h2: clamp(2rem, 4vw + 1rem, 3rem);
    --fs-h3: clamp(1.25rem, 2vw + 1rem, 1.5rem);
    --fs-body: clamp(0.9rem, 0.5vw + 0.8rem, 1rem);

    /* Layout */
    --section-spacing: clamp(4rem, 10vw, 8rem);
    --border-radius: 16px;
    --header-height: 80px;
    
    /* Effects */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-blur: blur(6px);
    --shadow-lg: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
}

*, *::before, *::after { box-sizing: border-box; }
html { 
    scroll-behavior: smooth; 
    /* This handles the header offset automatically! */
    scroll-padding-top: calc(var(--header-height) + 20px); 
}

body {
    margin: 0;
    font-family: var(--font-main);
    color: var(--clr-text-light);
    background-color: var(--clr-bg-deep);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    scrollbar-width: none; /* Firefox: hide scrollbar but keep scroll */
}

.navbar-brand img {
    width: 64px;
    height: 64px;
    object-fit: contain;
}

body::-webkit-scrollbar { width: 0; background: transparent; }
body::-webkit-scrollbar-thumb { background: transparent; width: 0; height: 0; }

img { max-width: 100%; display: block; height: auto; }
ul { list-style: none; padding: 0; margin: 0; }
a { text-decoration: none; color: inherit; }


:focus-visible {
    outline: 2px solid var(--clr-secondary);
    outline-offset: 4px;
    border-radius: 4px;
}


.ambient-background {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
    overflow: hidden;
    background: var(--clr-bg-deep);
}

.ambient-background::before,
.ambient-background::after {
    content: '';
    position: absolute;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.12), transparent 60%);
    border-radius: 50%;
}

.ambient-background::after {
    background: radial-gradient(circle, rgba(56, 189, 248, 0.12), transparent 60%);
    right: -10%; top: 40%;
}

/* --- 4. Utility Classes --- */
.container {
    width: min(90%, 1200px);
    margin-inline: auto;
}

.glass-container, .glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-top: 1px solid rgba(255,255,255,0.15); /* Highlight top edge */
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
}

.text-gradient {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); border: 0;
}


.header-wrapper {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 0.75rem 1rem; /* tighter to free width */
    transition: padding 0.3s ease;
}

.header-wrapper.scrolled { padding: 0.5rem 0.5rem; }

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 1.1rem; /* narrower padding to fit one line */
    border-radius: 100px;
    background: rgba(15, 7, 32, 0.6);
}

.navbar-brand {
    display: flex; align-items: center; gap: 0.5rem; /* reduce logo spacing */
    font-weight: 800; font-size: 1.15rem; /* slightly smaller text */
}

.nav-list { display: flex; gap: 1.25rem; }
.header-cta {
    display: inline-flex; 
    white-space: nowrap;  
}

/* Desktop nav layout */
.primary-navigation {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

.nav-link {
    font-weight: 600; font-size: 0.85rem; text-transform: uppercase; /* slightly smaller */
    justify-content: center;
    align-items: center;
    color: var(--clr-text-muted);
    transition: color 0.25s ease;
    position: relative;
}

.nav-link:hover, .nav-link.active { color: var(--clr-text-light); }
.nav-link::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--clr-secondary);
    transition: width 0.25s ease;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }


.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.75em 0.75em;

    font-weight: 700; text-transform: uppercase;
    border-radius: 100px; transition: all 0.25s ease;
}

.btn-primary {
    background: var(--clr-text-light); color: var(--clr-bg-deep);
    border: 2px solid transparent;
}
.btn-primary:hover {
    background: var(--clr-secondary); transform: translateY(-2px);
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.35);
}

.btn-outline {
    background: transparent; border: 2px solid rgba(255,255,255,0.2);
    color: var(--clr-text-light);
}
.btn-outline:hover {
    border-color: var(--clr-text-light); background: rgba(255,255,255,0.05);
}

.mobile-nav-toggle { display: none; background: transparent; border: none; cursor: pointer; padding: 0.5rem; }

.hamburger { width: 24px; height: 20px; position: relative; }
.hamburger span {
    display: block; width: 100%; height: 2px; background: white;
    position: absolute; left: 0; transition: all 0.3s ease;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { bottom: 0; }

/* Hamburger Animation */
.mobile-nav-toggle[aria-expanded="true"] .hamburger span:nth-child(1) { transform: rotate(45deg); top: 9px; }
.mobile-nav-toggle[aria-expanded="true"] .hamburger span:nth-child(2) { opacity: 0; }
.mobile-nav-toggle[aria-expanded="true"] .hamburger span:nth-child(3) { transform: rotate(-45deg); bottom: 9px; }

@media (max-width: 768px) {
    .mobile-nav-toggle { display: block; z-index: 2000; }
    .header-cta { display: none; }
    
    .primary-navigation {
        position: fixed; inset: 0 0 0 30%; /* Drawer leaves 30% left visible */
        background: rgba(15, 7, 32, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column; align-items: flex-start;
        padding: min(20vh, 8rem) 2rem;
        transform: translateX(100%); /* Hidden by default */
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1500;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
        display: flex;
        align-items: center;
        display: flex;       /* CRITICAL: This forces the list and button side-by-side */
    align-items: center; /* Vertically aligns the button with the text */
    gap: 2.5rem;
    }
    
    .primary-navigation[data-visible="true"] { transform: translateX(0%); }
    .nav-list { flex-direction: column; width: 100%; }
    .nav-link { font-size: 1.2rem; display: block; padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
}

/* --- 7. Hero & Sections --- */
.section-hero {
    padding-top: clamp(8rem, 20vh, 12rem);
    min-height: 90vh; display: flex; align-items: center; text-align: center;
}
.hero-container { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.hero-title { font-size: var(--fs-h1); font-weight: 800; line-height: 1.1; margin: 0; }
.hero-lead { font-size: var(--fs-h3); color: var(--clr-text-muted); max-width: 60ch; margin: 0; }
.hero-actions { display: flex; gap: 1rem; margin-top: 1rem; flex-wrap: wrap; justify-content: center; }

.section-about, .section-projects { padding-block: var(--section-spacing); }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-subtitle { color: var(--clr-primary); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; font-size: 0.9rem; margin-top: 0.5rem; }

/* About Grid */
.about-grid-layout {
    display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem; align-items: start;
}
.about-main { padding: 0; overflow: hidden; height: 100%; display: flex; flex-direction: column; }
.about-image-wrapper { width: 100%; aspect-ratio: 16/9; overflow: hidden; }
.about-image-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.about-content { padding: 1.5rem; }
.about-main:hover .about-image-wrapper img { transform: scale(1.05); }

/* Service Cards */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.service-card { padding: 1.5rem; transition: transform 0.3s ease, border-color 0.3s ease; }
.service-card:hover { transform: translateY(-5px); border-color: var(--clr-primary); }
.service-icon { font-size: 2rem; margin-bottom: 1rem; }

/* Projects Grid */
.projects-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem;
}
.project-card { display: flex; flex-direction: column; overflow: hidden; transition: all 0.3s ease; }
.project-card:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.4); }
.project-image { aspect-ratio: 16/10; overflow: hidden; }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.project-card:hover img { transform: scale(1.05); }
.project-content { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; }
.tags { margin-top: auto; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tags li {
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
    padding: 0.25em 0.75em; background: rgba(255,255,255,0.05);
    color: var(--clr-secondary); border-radius: 50px; border: 1px solid rgba(255,255,255,0.1);
}

/* Contact */
.contact-section {
    padding: var(--section-spacing) 0;
}

.contact-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

/* --- 8. Footer --- */
.footer { border-top: 1px solid rgba(255,255,255,0.1); padding: 4rem 0 2rem; margin-top: 4rem; background: rgba(0,0,0,0.2); }
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem; }
.footer-brand p { color: var(--clr-text-muted); font-size: 0.9rem; }
.footer-links { display: flex; gap: 2rem; }
.footer-links a:hover { color: var(--clr-primary); }
.copyright { text-align: center; color: var(--clr-text-muted); border-top: 1px solid rgba(255,255,255,0.05); padding-top: 1.5rem; }

/* --- 9. Animations --- */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}
@media (max-width: 900px) {
    .about-grid-layout { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

.service-icon img {
    max-width: 88px;
    max-height: 88px;
    filter: invert(1);
}