:root {
    --bg-canvas: #f0f4f9;
    --surface-card: rgba(255, 255, 255, 0.95);
    --border-glass: #e2e8f0;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --primary-indigo: #4338ca;
    --primary-glow: rgba(67, 56, 202, 0.28);
    --accent-cyan: #06b6d4;
    --card-shadow: 0 24px 60px -15px rgba(15, 23, 42, 0.08);
}

body {
    background-color: var(--bg-canvas);
    color: var(--text-dark);
    font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.font-num {
    font-family: 'Space Grotesk', monospace !important;
    letter-spacing: -0.3px;
}

/* ব্যাকগ্রাউন্ড লাইটিং অরব[cite: 4] */
.ambient-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.55;
}
.orb-indigo { width: 440px; height: 440px; background: rgba(79, 70, 229, 0.18); top: -60px; right: -40px; }
.orb-cyan   { width: 380px; height: 380px; background: rgba(6, 182, 212, 0.16); bottom: -60px; left: -40px; }

/* মেইন কার্ড কন্টেইনার[cite: 4] */
.auth-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 10;
    margin: auto;
}

.auth-glass-card {
    background: var(--surface-card);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    border: 1px solid var(--border-glass);
    border-radius: 28px;
    padding: 40px 32px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

/* ব্র্যান্ড ব্যাজ ও লোগো[cite: 4] */
.auth-brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.68rem;
    font-weight: 800;
    color: var(--primary-indigo);
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.16);
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.8px;
    margin-bottom: 14px;
}

.brand-header-title {
    font-size: 1.65rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 3px;
}
.brand-go { color: var(--text-dark); }
.brand-pay {
    background: linear-gradient(135deg, #4f46e5, var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 24px;
}

/* স্ক্রিনশটের মতো পিংক এরর বক্স */
.alert-box-neo {
    background: #fde8e8;
    border: 1px solid #fbd5d5;
    color: #9b1c1c;
    border-radius: 16px;
    padding: 12px;
    text-align: center;
    margin-bottom: 16px;
    font-size: 0.82rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* ইনপুট গ্রুপ ও আইকন[cite: 4] */
.input-group-custom {
    position: relative;
    margin-bottom: 14px;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 0.95rem;
    pointer-events: none;
    transition: color 0.2s;
    z-index: 5;
}

.form-control-neo, .form-select-neo {
    width: 100%;
    background: #ffffff !important;
    border: 1px solid var(--border-glass) !important;
    border-radius: 14px;
    padding: 12px 16px 12px 44px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-dark) !important;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.01);
    transition: all 0.25s ease;
    outline: none;
}

.form-control-neo::placeholder {
    color: #94a3b8;
    font-weight: 500;
    font-size: 0.84rem;
}

.form-control-neo:focus, .form-select-neo:focus {
    border-color: var(--primary-indigo) !important;
    box-shadow: 0 0 0 4px var(--primary-glow) !important;
}

/* ল্যাঙ্গুয়েজ ড্রপডাউন */
.lang-select-neo {
    padding: 10px 16px;
    font-size: 0.8rem;
    border-radius: 12px;
    cursor: pointer;
    background-color: rgba(248, 250, 252, 0.8) !important;
}

/* ক্যাপচা ক্লাস্টার[cite: 4] */
.captcha-cluster {
    display: flex;
    align-items: center;
    gap: 8px;
}
.captcha-cluster input {
    padding-left: 18px !important;
    letter-spacing: 2px;
    font-weight: 800;
}
.captcha-img-holder {
    flex-shrink: 0;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    cursor: pointer;
    position: relative;
    background: #ffffff;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.02);
    transition: transform 0.2s ease;
}
.captcha-img-holder:hover {
    transform: scale(1.02);
}
.captcha-img-holder img {
    height: 44px;
    width: 110px;
    display: block;
    user-select: none;
}
.captcha-refresh-hint {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    color: white;
    font-size: 0.72rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}
.captcha-img-holder:hover .captcha-refresh-hint {
    opacity: 1;
}

/* স্ক্রিনশটের মতো বেগুনী রঙের সাবমিট বাটন */
.btn-neo-submit {
    background: #4338ca !important;
    border: none;
    color: #ffffff !important;
    font-weight: 700;
    font-size: 0.92rem;
    border-radius: 14px;
    padding: 13px;
    width: 100%;
    margin-top: 10px;
    box-shadow: 0 8px 20px -4px var(--primary-glow);
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
}
.btn-neo-submit:hover {
    background: #3730a3 !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -4px var(--primary-glow);
}
.btn-neo-submit:active {
    transform: scale(0.98);
}

/* ২এফএ সেটআপ মোডাল[cite: 4] */
.modal-content-neo {
    border-radius: 28px;
    border: 1px solid var(--border-glass);
    background: var(--surface-card);
    backdrop-filter: blur(28px);
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.2);
    overflow: hidden;
}
.qr-frame {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    padding: 12px;
    border-radius: 18px;
    display: inline-block;
    box-shadow: 0 6px 18px rgba(0,0,0,0.03);
}
.manual-key-badge {
    background: #f1f5f9;
    border: 1px solid var(--border-glass);
    padding: 6px 12px;
    border-radius: 10px;
    font-size: 0.85rem;
    color: var(--text-dark);
    word-break: break-all;
}

@media (max-width: 480px) {
    .auth-glass-card {
        padding: 30px 22px;
        border-radius: 22px;
    }
}