:root {
    --bg: #0a0a0a;
    --fg: #ffffff;
    --card: #161616;
    --border: #333;
    --primary: #8a2be2;
    --accent: #b488ff;
    --accent2: #4d22bb;
    --muted: #b3b3b3;
    --transition: all 0.3s ease;
}

body.light {
    --bg: #f4f4f9;
    --fg: #1a1a1a;
    --card: #ffffff;
    --border: #e0e0e0;
    --primary: #7a3cff;
    --accent: #6200ea;
    --muted: #666666;
}

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

body {
    background: var(--bg);
    color: var(--fg);
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 0; position: sticky; top: 0; background: var(--bg);
    z-index: 1000; border-bottom: 1px solid var(--border);
}

nav a { color: var(--muted); margin-left: 20px; font-weight: 500; }
nav a:hover { color: var(--primary); }

.theme-toggle {
    background: var(--card); border: 1px solid var(--border); color: var(--fg);
    padding: 8px 16px; border-radius: 20px; cursor: pointer; margin-left: 20px;
}

.hero { padding: 100px 0; text-align: center; display: flex; flex-direction: column; align-items: center; }
h1 { font-size: 3rem; margin-bottom: 10px; line-height: 1.2; }
.lead { color: var(--muted); font-size: 1.2rem; max-width: 700px; margin-bottom: 30px; }

.btn {
    background: var(--primary); color: #fff; padding: 12px 30px; border-radius: 50px;
    font-weight: bold; box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}
.btn:hover { background: var(--accent); transform: translateY(-2px); }

section { padding: 80px 0; }
h2 { font-size: 2.5rem; text-align: center; margin-bottom: 40px; color: var(--fg); }

.about .grid { display: flex; gap: 50px; align-items: center; justify-content: center; }
.about img { width: 300px; border-radius: 20px; border: 2px solid var(--primary); }
.about-text { max-width: 600px; }

.about-stats { display: flex; gap: 15px; margin-top: 30px; }
.stat-box {
    background: var(--card); padding: 15px 25px; border-radius: 12px; text-align: center;
    border: 1px solid var(--border); flex: 1; transition: var(--transition);
}
.stat-box:hover { transform: translateY(-5px); border-color: var(--primary); }
.stat-box strong { display: block; font-size: 1.5rem; color: var(--primary); }
.stat-box span { font-size: 0.9rem; color: var(--muted); }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.project-card {
    background: var(--card);
    padding: 25px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.project-card:hover { transform: translateY(-5px); border-color: var(--primary); }
.project-card h3 { margin-bottom: 10px; color: var(--fg); }
.project-card p { color: var(--muted); font-size: 0.95rem; margin-bottom: 15px; }

.tag {
    display: inline-block; background: rgba(138, 43, 226, 0.1); color: var(--primary);
    padding: 5px 12px; border-radius: 6px; margin-right: 5px; font-size: 0.8rem;
    border: 1px solid rgba(138, 43, 226, 0.2);
}

.loader {
    width: 20px; height: 20px; border: 2px solid var(--primary); border-top-color: transparent;
    border-radius: 50%; animation: spin 1s linear infinite; margin-top: 15px; display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
.skill {
    background: var(--card); padding: 10px 20px; border-radius: 8px; display: flex; align-items: center;
    gap: 10px; color: var(--muted); border: 1px solid transparent; transition: 0.3s;
}
.skill:hover { transform: translateY(-5px); border-color: var(--primary); color: var(--accent); }

.tag-soft {
    background: var(--card); padding: 10px 20px; border-radius: 8px; color: var(--muted);
    border: 1px solid rgba(128,128,128,0.1); transition: 0.3s; cursor: default;
}
.tag-soft:hover { transform: translateY(-3px); border-color: #00ffcc; color: #00ffcc; }

.contact-container { display: flex; flex-direction: column; align-items: center; width: 100%; }
form { width: 100%; max-width: 800px; display: flex; flex-direction: column; gap: 20px; }
input, textarea {
    width: 100%; padding: 15px; border-radius: 10px; border: 1px solid var(--border);
    background: var(--card); color: var(--fg); font-size: 1rem; transition: var(--transition);
}
input:focus, textarea:focus { outline: none; border-color: var(--primary); }
.send-btn {
    background: var(--primary); color: white; padding: 15px; border-radius: 10px; border: none;
    font-size: 1rem; font-weight: bold; cursor: pointer; transition: var(--transition);
}
.send-btn:hover { background: var(--accent); }

footer { padding: 40px 0; text-align: center; color: var(--muted); border-top: 1px solid var(--border); margin-top: 40px; }
.whatsapp {
    position: fixed; right: 20px; bottom: 20px; background: #25D366; width: 60px; height: 60px;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 30px; color: #fff; box-shadow: 0 4px 15px rgba(0,0,0,0.3); z-index: 999;
}
.whatsapp:hover { transform: scale(1.1); }

@media(max-width: 800px) {
    .about .grid { flex-direction: column; text-align: center; }
    .about-stats { flex-wrap: wrap; }
    h1 { font-size: 2.2rem; }
}