:root {
    --bg: #0f0f14;
    --surface: rgba(25, 25, 35, 0.55);
    --border: rgba(255, 255, 255, 0.08);
    --text: #e2e2f0;
    --text-secondary: #a0a0c0;
    --accent: #7c8cf8;
    --accent-light: #a8b4ff;
    --radius: 20px;
    --blur: 18px;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: radial-gradient(ellipse at 30% 40%, #1e1e30 0%, #0b0b16 70%);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Navbar – frosted */
.navbar {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 1100px;
    background: rgba(18, 18, 28, 0.5);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 60px;
    padding: 0.7rem 2rem;
    z-index: 1000;
}

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

.nav-logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-dot { color: var(--accent); }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    background: rgba(255,255,255,0.03);
    padding: 0.5rem 1.8rem;
    border-radius: 40px;
    backdrop-filter: blur(10px);
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: 0.2s;
    padding: 0.3rem 0;
    border-bottom: 2px solid transparent;
}

.nav-link.active, .nav-link:hover {
    color: #fff;
    border-bottom-color: var(--accent);
}

#loginBtn, #logoutBtn, #signupBtn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    padding: 0.5rem 1.4rem;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    backdrop-filter: blur(8px);
    transition: 0.2s;
    margin-left: 0.5rem;
}

#loginBtn:hover, #logoutBtn:hover, #signupBtn:hover {
    background: rgba(255,255,255,0.1);
}

.nav-toggle { display: none; flex-direction: column; cursor: pointer; }
.bar { width: 25px; height: 2px; background: #fff; margin: 4px 0; border-radius: 5px; }

/* Sections */
.container {
    max-width: 1000px;
    margin: 120px auto 40px;
    background: var(--surface);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.8rem 2.5rem;
    box-shadow: 0 30px 50px rgba(0,0,0,0.5);
}

h1, h2, h3 { color: #ffffff; font-weight: 600; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    padding: 0.8rem 2rem;
    border-radius: 40px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
}
.btn-primary { background: var(--accent); border-color: var(--accent); }
.btn:hover { background: rgba(255,255,255,0.15); }
.btn-primary:hover { background: var(--accent-light); }

/* Home */
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center; }
.hero-text h1 { font-size: 3.2rem; line-height: 1.2; }
.highlight { background: linear-gradient(135deg, var(--accent), #c084fc); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.avatar {
    width: 160px; height: 160px;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(12px);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 4rem;
    border: 1px solid rgba(255,255,255,0.15);
}
.service-tags { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.8rem; }
.tag { background: rgba(255,255,255,0.07); backdrop-filter: blur(8px); padding: 0.5rem 1.2rem; border-radius: 30px; font-size: 0.9rem; border: 1px solid rgba(255,255,255,0.1); }

/* Projects form */
.project-form {
    background: rgba(255,255,255,0.03);
    border-radius: 20px; padding: 1.8rem; margin-bottom: 2.5rem;
    backdrop-filter: blur(14px); border: 1px solid rgba(255,255,255,0.08);
}
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 0.4rem; color: var(--text-secondary); font-size: 0.9rem; }
.form-group input, .form-group textarea {
    width: 100%; background: rgba(20,20,28,0.5); backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.1); border-radius: 12px; padding: 0.8rem 1rem; color: #fff; font-family: inherit;
}
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); gap: 1.8rem; }
.project-card {
    background: rgba(35,35,50,0.4); backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.07); border-radius: 20px; overflow: hidden; transition: transform 0.2s;
}
.project-card:hover { transform: translateY(-5px); }
.project-img { height: 150px; background: rgba(0,0,0,0.3); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color:#aaa; }
.project-img img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 1.2rem; }
.download-link { color: var(--accent); font-size: 0.9rem; text-decoration: none; }
.delete-btn { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.2); color: #ffaaaa; padding: 0.3rem 1rem; border-radius: 20px; cursor: pointer; }

/* Comments */
.comment-section { margin-top: 2.5rem; background: rgba(255,255,255,0.02); backdrop-filter: blur(14px); border-radius: 20px; padding: 1.8rem; border: 1px solid rgba(255,255,255,0.06); }
.comment-item { background: rgba(255,255,255,0.04); border-radius: 14px; padding: 1rem; margin-bottom: 0.8rem; border-left: 3px solid var(--accent); backdrop-filter: blur(6px); }
.comment-meta { font-size: 0.8rem; color: var(--accent-light); margin-bottom: 0.3rem; }
.contact-detail { background: rgba(255,255,255,0.03); backdrop-filter: blur(8px); border-radius: 18px; padding: 1.8rem; margin: 1rem 0; }

/* Login / Signup forms */
.auth-form {
    max-width: 400px; margin: 120px auto 40px;
    background: var(--surface); backdrop-filter: blur(20px);
    border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem;
}
.auth-form h2 { text-align: center; margin-bottom: 1.5rem; }
.auth-form input { width: 100%; margin-bottom: 1rem; }
.toggle-link { text-align: center; margin-top: 1rem; color: var(--accent); cursor: pointer; }

@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; }
    .nav-menu { position: fixed; left: -100%; top: 90px; flex-direction: column; background: rgba(15,15,20,0.8); backdrop-filter: blur(30px); width: 100%; padding: 2rem; transition: 0.3s; }
    .nav-menu.active { left: 0; }
    .nav-toggle { display: flex; }
}