/* --- GLOBAL STYLES & VARIABLES --- */
:root {
    --font-primary: 'Inter', sans-serif;
    --transition-fast: 0.2s ease;
    --transition-slow: 0.4s ease;
    --border-radius: 16px;

    /* Light Theme */
    --bg-light: #f5f5f7;
    --card-bg-light: #ffffff;
    --text-primary-light: #1d1d1f;
    --text-secondary-light: #515154;
    --accent-light: #0071e3;
    --border-light: #d2d2d7;
    --header-bg-light: rgba(255, 255, 255, 0.7);
    --header-text-light: #1d1d1f;
    --header-border-light: rgba(0, 0, 0, 0.1);

    /* Dark Theme */
    --bg-dark: #121212;
    --card-bg-dark: #1e1e1e;
    --text-primary-dark: #f5f5f7;
    --text-secondary-dark: #a1a1a6;
    --accent-dark: #0a84ff;
    --border-dark: #3a3a3c;
    --header-bg-dark: rgba(28, 28, 30, 0.7);
    --header-text-dark: #f5f5f7;
    --header-border-dark: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
    --bg: var(--bg-light);
    --card-bg: var(--card-bg-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --accent: var(--accent-light);
    --border: var(--border-light);
    --header-bg: var(--header-bg-light);
    --header-text: var(--header-text-light);
    --header-border: var(--header-border-light);
    --logo-filter: invert(0);
}

[data-theme="dark"] {
    --bg: var(--bg-dark);
    --card-bg: var(--card-bg-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --accent: var(--accent-dark);
    --border: var(--border-dark);
    --header-bg: var(--header-bg-dark);
    --header-text: var(--header-text-dark);
    --header-border: var(--header-border-dark);
    --logo-filter: invert(1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
    font-family: var(--font-primary);
    background-color: var(--bg);
    color: var(--text-primary);
    transition: background-color var(--transition-slow), color var(--transition-slow);
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* --- HEADER --- */
#main-header {
    position: fixed; top: 0; left: 0; width: 100%;
    z-index: 1000; padding: 16px 0;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--header-border);
    transition: background-color var(--transition-slow), border-color var(--transition-slow);
}
nav.container { display: flex; justify-content: space-between; align-items: center; }
.logo { height: 52px;  transition: filter var(--transition-slow); }
.nav-links { display: flex; list-style: none; gap: 32px; }
.nav-links a {
    color: var(--header-text); text-decoration: none; font-weight: 500;
    transition: color var(--transition-fast); position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; width: 0; height: 2px;
    bottom: -5px; left: 50%; transform: translateX(-50%);
    background-color: var(--accent); transition: width var(--transition-fast);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

.settings { display: flex; align-items: center; gap: 16px; }
.settings button {
    background: none; border: none; color: var(--header-text);
    font-size: 1.3rem; cursor: pointer; transition: color var(--transition-fast), transform var(--transition-fast);
}
.settings button:hover { color: var(--accent); transform: scale(1.1); }
.lang-switcher { position: relative; }
.lang-options {
    display: none; position: absolute; top: 180%; right: 0;
    background-color: var(--card-bg); border: 1px solid var(--border);
    border-radius: 8px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: fadeIn 0.2s;
}
.lang-options.show { display: block; }
.lang-options a {
    display: block; padding: 12px 24px; color: var(--text-primary);
    text-decoration: none; white-space: nowrap;
}
.lang-options a:hover { background-color: var(--accent); color: #fff; }
.hamburger { display: none; }

/* --- HERO SECTION --- */
#hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center;
    background: url('assets/banner.png') no-repeat center center/cover;
    position: relative;
}
#hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle, rgba(18, 18, 18, 0.5) 0%, rgba(18, 18, 18, 0.9) 100%);
}
.hero-content { position: relative; z-index: 1; animation: fadeInUp 1s ease-out; }
.hero-logo { max-width: 350px; margin-bottom: 24px;  }
#hero h1 {
    font-size: 2.2rem; max-width: 700px; margin: 0 auto 32px;
    line-height: 1.4; color: #e0e0e0; font-weight: 500;
}
.cta-button {
    display: inline-block; background-color: var(--accent); color: #fff;
    padding: 16px 36px; border-radius: 50px; text-decoration: none;
    font-weight: 700; font-size: 1.1rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.cta-button:hover { transform: scale(1.05); box-shadow: 0 5px 20px color-mix(in srgb, var(--accent) 40%, transparent); }

/* --- GENERAL SECTIONS --- */
section { padding: 100px 0; }
.section-title {
    font-size: 3rem; text-align: center; margin-bottom: 60px;
    font-weight: 900;
}
.category-title {
    font-size: 2rem; margin: 60px 0 24px 0;
    color: var(--text-secondary); border-bottom: 2px solid var(--border);
    padding-bottom: 12px;
}
#contact { margin-bottom: 60px; }

/* --- FLEX GRID (Partners, Reviews, Contact) --- */
.flex-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px;
}
.flex-grid > * {
    flex-grow: 1; /* Allow items to grow */
    flex-basis: 350px; /* Base width */
    max-width: 450px; /* Max width */
}

/* --- PROJECTS --- */
.search-container {
    position: relative; max-width: 600px; margin: 0 auto 60px;
}
.search-container i {
    position: absolute; left: 20px; top: 50%;
    transform: translateY(-50%); color: var(--text-secondary);
}
#search-input {
    width: 100%; padding: 16px 24px 16px 50px; border-radius: 50px;
    border: 1px solid var(--border); background-color: var(--card-bg);
    color: var(--text-primary); font-size: 1.1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
#search-input:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent);
}
.projects-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
}
.project-card {
    background-color: var(--card-bg); border: 1px solid var(--border);
    border-radius: var(--border-radius); overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.project-card:hover { transform: translateY(-8px); box-shadow: 0 15px 30px color-mix(in srgb, var(--bg) 50%, transparent); }
.project-card img { width: 100%; height: 200px; object-fit: cover; }
.project-content { padding: 24px; }
.project-content h4 { font-size: 1.5rem; margin-bottom: 12px; }
.project-content p { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.project-tags span {
    background-color: color-mix(in srgb, var(--accent) 15%, transparent);
    color: var(--accent); padding: 6px 12px;
    border-radius: 20px; font-size: 0.8rem; font-weight: 500;
}
.project-link {
    display: inline-block; color: var(--accent); text-decoration: none;
    font-weight: 700; transition: transform var(--transition-fast);
}
.project-link:hover { transform: translateX(5px); }

/* --- ABOUT, PARTNERS, REVIEWS, CONTACT --- */
.about-content { display: flex; align-items: center; gap: 40px; }
.profile-pic { width: 250px; height: 250px; border-radius: 50%; object-fit: cover; box-shadow: 0 0 0 10px var(--card-bg); }
.about-content p { font-size: 1.2rem; line-height: 1.8; color: var(--text-secondary); }

.partner-card, .review-card, .contact-card {
    background-color: var(--card-bg); border: 1px solid var(--border);
    border-radius: var(--border-radius); padding: 32px; text-align: center;
}
.partner-logo {
    height: 80px;
    max-width: 150px;
    margin-bottom: 20px;
    object-fit: contain;
}
.review-card img { width: 80px; height: 80px; border-radius: 50%; margin-bottom: 16px; }
.review-card p { font-style: italic; color: var(--text-secondary); margin-bottom: 16px; font-size: 1.1rem; }
.review-card strong { font-size: 1.1rem; }
.contact-card h3 { font-size: 1.5rem; margin-bottom: 16px; }
.contact-card p, .contact-card a {
    display: block; color: var(--text-secondary); text-decoration: none;
    margin-bottom: 12px; font-size: 1.1rem; transition: color var(--transition-fast);
}
.contact-card a:hover { color: var(--accent); }

/* --- Partner Link Button Style --- */
.partner-link.cta-button {
    margin-top: 20px;
    padding: 12px 28px;
    font-size: 1rem;
}

/* --- FOOTER --- */
footer { text-align: center; padding: 40px 0; border-top: 1px solid var(--border); color: var(--text-secondary); }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    .hamburger {
        display: block; background: none; border: none; font-size: 1.5rem;
        color: var(--header-text); z-index: 1001;
    }
    .nav-links {
        position: fixed; top: 0; right: -100%;
        width: 70%; height: 100vh;
        background: var(--card-bg-dark);
        flex-direction: column; justify-content: center;
        gap: 40px; transition: right 0.4s ease-in-out;
    }
    .nav-links.active { right: 0; }
    .nav-links a { color: var(--text-primary-dark); }
    .about-content { flex-direction: column; text-align: center; }
    .section-title { font-size: 2.5rem; }
}

/* --- KEYFRAMES --- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }