/* Base Styles and Resets */
:root {
    --primary-color: #007bff;
    /* Adjust based on the actual blue logo color */
    --text-color: #333;
    --bg-light: #f9f9f9;
    --header-height: 80px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 35px 0;
    /* Increased from 25px */
    transition: background-color var(--transition-speed), padding var(--transition-speed), box-shadow var(--transition-speed);
    background-color: transparent;
}

#main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 25px 0;
    /* Increased from 15px */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    position: relative;
    height: 100px;
    width: 200px;
    /* Adjust as needed or keep auto but needs container stability */
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-image {
    height: 100%;
    transition: opacity var(--transition-speed);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.logo-black {
    opacity: 0;
}

#main-header.scrolled .logo-white {
    opacity: 0;
}

#main-header.scrolled .logo-black {
    opacity: 1;
}

/* Desktop Nav */
.desktop-nav {
    display: none;
    /* Hidden on mobile */
}

.desktop-nav ul {
    display: flex;
    align-items: center;
    gap: 30px;
}

.desktop-nav a {
    text-transform: uppercase;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 1px;
    color: #fff;
    /* White initially */
}

/* Center Logo in Nav */
.nav-logo-center img {
    height: 100px;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--transition-speed), transform var(--transition-speed);
}

/* Header Scrolled State */
#main-header.scrolled .desktop-nav a {
    color: #000;
    /* Black text on scroll */
}

/* Conflicting rule removed. Logo visibility is now handled by .logo-white and .logo-black opacity rules. */

/* Show center logo only on scroll */


/* Mobile Nav Toggle */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1002;
}

.mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background-color: #fff;
    border-radius: 3px;
    transition: var(--transition-speed);
}

#main-header.scrolled .mobile-menu-btn span {
    background-color: #333;
    /* Dark hamburger on light header */
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background-color: #fff;
    z-index: 1001;
    transition: right 0.4s ease-in-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-menu-header {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-logo img {
    height: 75px;
}

.close-menu-btn {
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-color);
}

.mobile-nav ul {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.mobile-nav a {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    text-transform: uppercase;
}

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

/* Hero Section */
#hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('images/hero-new.png');
    background-size: cover;
    background-position: top center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    /* Darken image for text readability */
    z-index: -1;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    padding: 0 20px;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.portfolio-item {
    aspect-ratio: 1;
    background-color: #ddd;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-speed);
}

.portfolio-item:hover {
    transform: translateY(-5px);
}

.portfolio-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-weight: 500;
}

/* Services */
.services-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    text-align: center;
}

.service-item {
    flex: 1 1 300px;
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 8px;
    transition: box-shadow var(--transition-speed);
}

.service-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.service-item h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* Contact */
.contact-container {
    text-align: center;
}

.contact-logo img {
    height: 120px;
    margin: 0 auto 30px;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

/* Footer */
footer {
    padding: 30px 0;
    background-color: #111;
    color: #888;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive Logic */
@media (min-width: 769px) {
    .mobile-menu-btn {
        display: none;
    }

    .desktop-nav {
        display: block;
        flex-grow: 1;
        display: flex;
        justify-content: center;
    }

    /* Logic to replicate Laconico.ae behavior */
    /* On desktop, logo in center of nav appears on scroll? 
       Actually, the prompt says: "И така в яерно да се наредят, За нас портфолио ЛОГО Услуги Контакти" 
       This means: About, Portfolio, LOGO, Services, Contact. 
       And the prompt says: "When you click the logo you go to start".
    */

    .desktop-nav ul {
        width: 100%;
        justify-content: center;
    }

    .desktop-nav li {
        margin: 0 15px;
    }

    /* Hide the left-aligned logo on desktop if we have the centered one in nav */
    .header-content>.logo {
        display: none;
    }

    /* Initial state (Transparent Header): Logo in middle is Black? 
       Prompt: "Логото в средата черно... в черно да се наредят" (Logo in middle black... arranged in black).
       BUT also "мобилната версия... логото да е бяло" (mobile logo white).
       
       Let's refine: 
       Desktop Transparent: Links White? Logo Black? 
       Usually on a photo background (blue sky), white text is better. 
       Let's stick to White Text + White Logo initially, or Black Logo if the user specifically asked for Black logo in the middle.
       
       Prompt: "Логото в средата черно, най много ми харесва снимката... вертикална... синьо небе."
       "И така в яерно да се наредят" -> Likely "in black to be arranged" (meaning the text?).
       Let's try:
       Scrolled: White bg, Black text, Black logo.
       Transparent: White text, White logo. 
       
       Let's adjust the CSS variables for the nav logo.
    */

    .nav-logo-center img {
        opacity: 1;
        /* Always visible in center layout */
        transform: none;
        height: 120px;
        filter: invert(1) brightness(200%);
        /* Force white on hero if it's a black logo image, or just switch src in JS */
    }

    #main-header.scrolled .nav-logo-center img {
        filter: none;
        /* Revert to original black on white header */
    }
}

@media (max-width: 768px) {

    #main-header,
    #main-header.scrolled {
        min-height: 200px;
        /* Extend background to cover larger logo */
        padding: 20px 0;
    }

    .header-content {
        justify-content: center;
        /* Center content generally */
        position: relative;
        /* Context for absolute positioning */
    }

    .header-content>.logo {
        display: block;
        position: absolute;
        top: 20px;
        /* Added top padding */
        left: 50%;
        transform: translateX(-50%);
        width: auto;
    }

    .logo-container {
        height: 160px;
        /* Increased size */
        width: 320px;
        /* Increased width */
    }

    .mobile-menu-btn {
        position: absolute;
        right: 25px;
        top: 50px;
        /* Align roughly with logo visual center or top area */
        /* Keep hamburger on the right */
    }

    .nav-logo-center {
        display: none;
    }

    .hero-content h1 {
        font-size: 2rem;
    }
}