:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --accent: #38bdf8;
    --accent-hover: #0284c7;
    --text: #f8fafc;
    --text-muted: #94a3b8;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #334155;
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent);
}

.container {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 2rem;
    flex: 1;
}

.hero {
    text-align: center;
    padding: 3rem 1rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid #334155;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.skill-card {
    background-color: #0f172a;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.skill-card i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border-radius: 6px;
    border: 1px solid #334155;
    background-color: #0f172a;
    color: var(--text);
    font-size: 1rem;
}

.btn {
    background-color: var(--accent);
    color: #0f172a;
    font-weight: bold;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: var(--accent-hover);
}

.alert-success {
    background-color: #064e3b;
    color: #34d399;
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

footer {
    background-color: var(--card-bg);
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid #334155;
    color: var(--text-muted);
    font-size: 0.9rem;
}

footer a {
    color: var(--accent);
    text-decoration: none;
}