/* style.css */
:root {
    --bpk-pink: #ff69b4;  /* สีชมพู BPK */
    --bpk-green: #39ff14; /* สีเขียวนีออน BPK */
    --dark-bg: #0b0e14;
    --glass-bg: rgba(22, 27, 34, 0.8);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    font-family: 'Kanit', sans-serif;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

/* Background Setup */
.bg-image {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    /* เปลี่ยน URL รูปพื้นหลังตรงนี้ */
    background-image: url('https://images.unsplash.com/photo-1614850523296-d8c1af93d400?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.bg-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(11, 14, 20, 0.9) 0%, rgba(255, 105, 180, 0.1) 100%);
    z-index: -1;
}

/* Container Glassmorphism */
.container {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 3rem;
    border-radius: 24px;
    border: 1px solid rgba(255, 105, 180, 0.3);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(57, 255, 20, 0.05);
    width: 90%;
    max-width: 450px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-box { text-align: center; margin-bottom: 2rem; }

.title { 
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    margin: 0;
    color: var(--bpk-green);
    text-shadow: 0 0 15px rgba(57, 255, 20, 0.5);
    letter-spacing: 4px;
}

.title span { color: var(--bpk-pink); text-shadow: 0 0 15px rgba(255, 105, 180, 0.5); }

.subtitle { color: #8b949e; font-size: 0.9rem; margin-top: 5px; text-transform: uppercase; letter-spacing: 2px; }

/* Input Styles */
.input-group { margin-bottom: 1.5rem; }

label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: var(--bpk-pink); }

input, select {
    width: 100%;
    padding: 14px;
    background: rgba(13, 17, 23, 0.7);
    border: 1px solid #30363d;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--bpk-green);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.2);
    background: rgba(13, 17, 23, 0.9);
}

/* Button Neon Effect */
button {
    width: 100%;
    padding: 16px;
    margin-top: 1rem;
    background: transparent;
    border: 2px solid var(--bpk-green);
    color: var(--bpk-green);
    border-radius: 12px;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

button:hover {
    background: var(--bpk-green);
    color: var(--dark-bg);
    box-shadow: 0 0 30px var(--bpk-green);
}

button:disabled { opacity: 0.5; cursor: not-allowed; }

#status { 
    text-align: center; 
    margin-top: 1.5rem; 
    font-weight: 500;
    min-height: 24px;
}