:root {
    --bg-dark: #0f2027;
    --bg-medium: #203a43;
    --bg-light: #2c5364;
    --accent: #00c6ff;
    --edit-accent: #ffb400;
    --text-white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.05);
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark), var(--bg-medium), var(--bg-light));
    background-attachment: fixed;
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    text-align: center;
    padding: 40px 20px;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
}

.container {
    width: 90%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: 1fr 1.8fr;
    gap: 30px;
    padding-bottom: 50px;
}

@media (max-width: 950px) {
    .container { grid-template-columns: 1fr; }
}

.glass-3d {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

h2 {
    margin-top: 0;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
    padding-bottom: 5px;
    font-size: 1.2rem;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

input, select {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    outline: none;
}

button {
    padding: 12px;
    border-radius: 8px;
    border: none;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

#submitBtn {
    background: var(--accent);
    color: var(--bg-dark);
}

#cancelBtn {
    background: transparent;
    border: 1px solid white;
    color: white;
    margin-top: 5px;
}

.table-container { overflow-x: auto; margin-top: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
th { color: var(--accent); }

.btn-group { display: flex; gap: 5px; }
.edit-btn { background: #ffb400; color: #000; padding: 5px 10px; border-radius: 4px; }
.del-btn { background: #ff4b2b; color: #fff; padding: 5px 10px; border-radius: 4px; }