/* কালার এবং ফন্ট ভেরিয়েবল */
:root {
    --primary-color: #00ff88;
    --accent-color: #ff9900;
    --bg-gradient: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    --card-bg: rgba(255, 255, 255, 0.07);
}

body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-gradient);
    color: #ffffff;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    overflow: hidden;
}

/* মেইন কার্ড কন্টেইনার */
.secure-card {
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    max-width: 420px;
    width: 90%;
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

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

h1 {
    font-size: 2.2rem;
    margin-top: 0;
    margin-bottom: 10px;
    color: var(--primary-color);
    text-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
}

p {
    font-size: 1.05rem;
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 35px;
}

/* অ্যাকশন বাটন ডিজাইন */
.action-btn {
    background: var(--accent-color);
    color: #000;
    padding: 18px 0;
    font-size: 1.25rem;
    font-weight: 700;
    border: none;
    border-radius: 12px;
    width: 100%;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(255, 153, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.action-btn:hover {
    background: #ffcc00;
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(255, 153, 0, 0.4);
}

/* ফুটার লিঙ্ক */
.footer-links {
    margin-top: 30px;
}

.privacy-link {
    color: #888;
    font-size: 0.85rem;
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.3s;
}

.privacy-link:hover {
    color: #fff;
}

/* মডাল পপ-আপ ডিজাইন */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: #1a1a2e;
    padding: 30px;
    border-radius: 15px;
    max-width: 400px;
    width: 85%;
    position: relative;
    border: 1px solid var(--primary-color);
    text-align: left;
}

.modal-content h2 {
    color: var(--accent-color);
    margin-top: 0;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.modal-content p {
    color: #ddd;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 10px;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.8rem;
    color: #ff4444;
    cursor: pointer;
}