/* --- Elite Heavy-CSS payment.css --- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;800&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
    --primary: #8b5cf6;
    --primary-glow: rgba(139, 92, 246, 0.4);
    --navy: #020617;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Plus Jakarta Sans', sans-serif; }

body {
    background-color: var(--navy);
    /* 🌌 Radiant Backdrop */
    background-image: radial-gradient(circle at center, #1e1b4b 0%, var(--navy) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* --- 🏛️ The Glass Vault --- */
.payment-container {
    background: var(--glass);
    backdrop-filter: blur(25px);
    border: 1px solid var(--glass-border);
    padding: 50px;
    border-radius: 45px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
    border-top: 8px solid var(--primary); /* Glowing Accent */
    animation: portalEntry 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

@keyframes portalEntry {
    from { opacity: 0; transform: scale(0.9) translateY(20px); filter: blur(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}

.header-section { text-align: center; margin-bottom: 40px; }

h2 {
    color: white;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 8px;
}

.subtitle {
    color: #94a3b8;
    font-size: 0.95rem;
    letter-spacing: -0.2px;
}

/* --- ✍️ Form Fields --- */
.field-box { margin-bottom: 25px; }

label {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

input, select {
    width: 100%;
    padding: 18px;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    font-size: 1rem;
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
    transition: 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

input:focus, select:focus {
    border-color: var(--primary);
    background-color: rgba(255, 255, 255, 0.08);
    outline: none;
    box-shadow: 0 0 25px var(--primary-glow);
    transform: translateY(-2px);
}

/* --- 💎 Technical Amount Styling --- */
input[type="number"] {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 800;
    font-size: 1.4rem;
    color: white;
    letter-spacing: 1px;
}

/* --- 🚀 The Heavy-Duty Pay Button --- */
.pay-btn {
    width: 100%;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 1.2rem;
    font-weight: 800;
    cursor: pointer;
    transition: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    margin-top: 15px;
    box-shadow: 0 15px 35px var(--primary-glow);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pay-btn:hover {
    transform: scale(1.05) translateY(-5px);
    filter: brightness(1.1);
    box-shadow: 0 25px 50px var(--primary-glow);
}

.pay-btn:active { transform: scale(0.98); }

/* --- ✅ Status Messaging --- */
#paymentMessage {
    margin-top: 30px;
    text-align: center;
    color: #34d399;
    font-weight: 700;
    padding: 15px;
    background: rgba(52, 211, 153, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(52, 211, 153, 0.2);
    font-size: 0.9rem;
}

/* --- 🏠 Navigation --- */
.home-btn {
    display: block;
    text-align: center;
    margin-top: 30px;
    color: #64748b;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: 0.3s;
}

.home-btn:hover {
    color: var(--primary);
    letter-spacing: 1px;
}