:root {
    --bg-color: #0a0a0a;
    --text-main: #ffffff;
    --text-muted: #888888;
    --card-bg: #141414;
    --accent-blue: #3b82f6;
    --border-color: #1f1f1f;
    --shadow: 0 10px 30px rgba(0,0,0,0.5);
    --card-hover-bg: #1a1a1a;
}

.light-theme {
    --bg-color: #f5f5f7;
    --text-main: #1d1d1f;
    --text-muted: #6e6e73;
    --card-bg: #ffffff;
    --border-color: #d2d2d7;
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
    --card-hover-bg: #f9f9fb;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
    margin: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
    user-select: none;
    -webkit-user-select: none;
}

header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 5% 20px 5%;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
}

.menu-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    transition: all 0.3s ease;
}

.menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-main);
    transition: 0.3s;
    border-radius: 2px;
}

.menu-btn.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.dropdown-menu {
    position: absolute;
    top: 55px;
    left: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    min-width: 200px;
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 9999;
    box-shadow: var(--shadow);
    padding: 10px 0;
}

.dropdown-menu.show { display: flex; animation: fadeInDown 0.3s ease forwards; }

.dropdown-menu a {
    color: var(--text-main);
    padding: 12px 20px;
    text-decoration: none;
    font-size: 0.95rem;
    transition: background 0.2s;
}

.dropdown-menu a:hover {
    background: var(--card-hover-bg);
    color: var(--accent-blue);
}

.theme-toggle {
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0 20px;
    height: 45px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: 0.3s ease;
}

.theme-toggle:hover, .menu-btn:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.logo-img {
    max-width: 150px;
    height: auto;
    border-radius: 12px;
    border: 4px solid transparent;
    animation: googleBorder 8s linear infinite;
    transition: transform 0.3s;
}

@keyframes googleBorder {
    0% { border-color: #4285F4; }
    25% { border-color: #DB4437; }
    50% { border-color: #F4B400; }
    75% { border-color: #0F9D58; }
    100% { border-color: #4285F4; }
}

.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 60px 20px;
}

h1 { 
    font-size: 2.5rem; 
    font-weight: 300; 
    color: var(--text-muted); 
    margin-bottom: 50px; 
    max-width: 800px;
}

.highlight { 
    color: var(--accent-blue) !important; 
    font-weight: 600; 
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 1100px;
    margin-bottom: 60px;
}

.service-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-blue);
    background: var(--card-hover-bg);
}

.service-card h3 { 
    color: var(--accent-blue); 
    text-transform: uppercase; 
    font-size: 0.9rem; 
    margin-bottom: 15px; 
}

.service-card p { 
    line-height: 1.6; 
    color: var(--text-muted); 
    font-size: 1rem; 
}

.btn-cta {
    display: inline-block;
    padding: 18px 45px;
    border: 2px solid var(--accent-blue);
    color: var(--accent-blue);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
    user-select: text;
}

.btn-cta:hover {
    background: var(--accent-blue);
    color: #ffffff;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

footer { 
    padding: 50px; 
    text-align: center; 
    color: var(--text-muted); 
    font-size: 0.8rem; 
    letter-spacing: 1px; 
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    .services-grid { grid-template-columns: 1fr; }
    header { padding-top: 20px; }
}