/* 
 * Guluzada Studio - Main Stylesheet
 * 
 * Colors: 
 * - Deep Obsidian: #0f0f11 (Background)
 * - Electric Indigo: #6366f1 (Primary)
 * - Stardust White: #f8fafc (Text)
 * - Slate Grey: #94a3b8 (Secondary Text)
 * - Luminous Teal: #2dd4bf (Accent)
 */

:root {
    /* Color Palette */
    --color-bg: #0f0f11;
    --color-bg-alt: #18191c;
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-accent: #2dd4bf;
    --color-border: #334155;
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;
    
    /* Effects */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5);
    --transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Light Mode Overrides */
[data-theme="light"] {
    --color-bg: #ffffff;
    --color-bg-alt: #f1f5f9;
    --color-text: #0f0f11;
    --color-text-muted: #475569;
    --color-border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
}

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

html {
    /* scroll-behavior: smooth; Removed to prevent potential flicker */
    font-size: 16px;
    scrollbar-width: thin; /* Firefox */
    scrollbar-color: var(--color-border) var(--color-bg); /* Firefox */
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px; /* Added for horizontal scrollbar */
    background-color: var(--color-bg);
}

::-webkit-scrollbar-track {
    background-color: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-primary);
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    overflow-y: auto; /* Standard scroll behavior */
    height: auto;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-muted);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* Utilities */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.grid { display: grid; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }

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

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 300; /* Light weight for STUDIO */
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.logo span {
    font-weight: 800; /* Heavy for guluzada */
    text-transform: lowercase;
    letter-spacing: normal;
}

.logo .dot {
    color: var(--color-primary);
    font-size: 2rem;
    line-height: 0;
}

/* Navbar */
.navbar {
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(15, 15, 17, 0.95);
    /* backdrop-filter: blur(10px); Removed to prevent scroll flicker */
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition);
}

[data-theme="light"] .navbar {
    background-color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    color: var(--color-text-muted);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

#lang-toggle {
    border: 1px solid var(--color-border);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

#lang-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(99, 102, 241, 0.1);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--color-primary);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
    /* will-change: transform; Removed to prevent flickering */
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-muted) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
}

.hero-bg-glow {
    position: absolute;
    top: 20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: 1;
    pointer-events: none;
    /* will-change: transform; Removed to prevent flickering */
}

/* Trust Bar */
.trust-bar {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg-alt);
}

.trust-items {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
}

/* Cards (Services) */
.card {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.card-icon {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

/* Grid Layouts */
.grid-services {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

/* Process Section */
.process-steps {
    counter-reset: steps;
}

.process-step {
    position: relative;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.process-step::before {
    counter-increment: steps;
    content: counter(steps, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.2;
}

/* Work Grid */
.work-grid {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-md);
}

@media (max-width: 600px) {
    .work-grid {
        grid-template-columns: 1fr;
    }
}

.project-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
}

.project-info {
    padding: var(--spacing-md);
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-full);
}

/* Contact Form */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-body);
    transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Footer */
.footer {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    /* margin-top: var(--spacing-xl); Removed to close gap */
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.copyright {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px) translateZ(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
    backface-visibility: hidden;
    -webkit-font-smoothing: subpixel-antialiased;
}

.fade-in-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsive Utility */
@media (max-width: 768px) {
    .nav-links {
        display: flex; /* Always display, but hide visually */
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: rgba(15, 15, 17, 0.95);
        /* backdrop-filter: blur(10px); */
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        
        /* Animation State: Hidden */
        opacity: 0;
        transform: translateY(-20px);
        pointer-events: none;
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav-links.active {
        opacity: 1;
        transform: translateY(0);
        pointer-events: all;
    }
    
    .mobile-menu-btn {
        display: block;
    }

    h1 { font-size: 2.5rem; }
    
    .section-padding { padding: var(--spacing-lg) 0; }
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    /* transition: opacity 0.5s ease, visibility 0.5s ease; */
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1); /* Premium "Curtain Rise" ease */
}

.preloader.hidden {
    /* opacity: 0; */
    /* visibility: hidden; */
    transform: translateY(-100%); /* Slide UP */
    pointer-events: none;
}

.loader-content {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.loader-logo {
    font-family: var(--font-heading);
    font-size: 3.5rem; /* Slightly bigger */
    font-weight: 700;
    color: var(--color-text);
    position: relative;
    display: inline-block;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards, pulseLogo 1s ease-in-out 1s infinite alternate;
}

.loader-logo span {
    color: var(--color-primary);
}

.loader-line {
    width: 0;
    height: 3px; /* Slightly thicker */
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent); /* Gradient line */
    margin: 1.5rem auto 0;
    animation: expandLine 0.8s cubic-bezier(0.23, 1, 0.32, 1) 0.6s forwards; /* Snappier expansion */
}

@keyframes pulseLogo {
    from { text-shadow: 0 0 10px rgba(99,102,241,0); }
    to { text-shadow: 0 0 20px rgba(99,102,241,0.5); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes expandLine {
    to {
        width: 100px;
    }
}

/* Page Transition Overlay */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg);
    z-index: 9998; /* Just below preloader (9999) */
    transform: translateY(100%); /* Start hidden below */
    pointer-events: none !important;
}

/* Particles Container */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1; /* Behind content */
    opacity: 0.6; /* Subtle */
}

/* Ensure hero content sits above particles */
.hero-content, .text-center {
    z-index: 10;
    position: relative;
}



/* Contact Page Styles */
.contact-grid {
    align-items: flex-start;
}

.contact-form-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 2rem !important;
    background: var(--color-bg-alt); /* Subtle distinction */
    border: 1px solid var(--color-border);
    padding: 2.5rem;
}

/* Removed Glow Effect */

/* Glass effect for form input borders/bg if desired, or keep as is */
.form-input:focus, .form-textarea:focus {
    background: rgba(255, 255, 255, 0.05);
}

.social-link {
    color: var(--color-text-muted);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--color-primary);
    transform: translateY(-3px);
}

.hover-link {
    position: relative;
    color: var(--color-text);
}

.hover-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.hover-link:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem !important;
    }
}