:root {
    --bg-color: #0f172a;
    --glass-bg: rgba(255,255,255,0.05);
    --glass-border: rgba(255,255,255,0.15);
    --accent: rgba(255,255,255,0.9);
    --muted: rgba(255,255,255,0.6);
    --radius: 16px;
    --max-width: 900px;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-color);
    color: var(--accent);
    padding: 20px;
}

/* فرم */
.form-container {
    margin-top:100px;
    width: 100%;
    max-width: var(--max-width);
    background: var(--glass-bg);
    border-radius: var(--radius);
    padding: 30px;
    backdrop-filter: blur(10px) saturate(120%);
    -webkit-backdrop-filter: blur(10px) saturate(120%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

h2 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--accent);
}

form {
    display: grid;
    gap: 15px;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media(max-width:600px) {
    .row {
        grid-template-columns: 1fr;
    }
}

label {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 5px;
}

input, textarea, select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.1);
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));
    color: var(--accent);
    font-size: 14px;
    outline: none;
    appearance: none;
}

    input:focus, textarea:focus, select:focus {
        border-color: rgba(116, 165, 190, 0.25);
        box-shadow: 0 6px 20px rgba(15, 101, 115, 0.4);
        transform: translateY(-1px);
    }

textarea {
    min-height: 100px;
    resize: vertical;
}

button {
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.1);
    color: var(--accent);
    font-size: 15px;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
}

    button:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    }