body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background: #07152f;
    color: #0f172a;
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(36px, 7vw, 110px);
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    padding: 38px;
    box-shadow: 0 30px 90px rgba(0,0,0,.32);
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-bottom: 28px;
}

.brand strong {
    font-size: 24px;
    color: #0f172a;
}

.brand span {
    color: #2563eb;
    font-weight: 700;
}

h1 {
    margin: 0 0 8px;
    color: #0f172a;
}

p {
    color: #64748b;
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 16px;
    color: #334155;
    font-weight: 600;
}

input {
    box-sizing: border-box;
    width: 100%;
    margin-top: 7px;
    padding: 12px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    font-size: 15px;
}

button {
    width: 100%;
    border: 0;
    border-radius: 10px;
    padding: 13px 16px;
    background: linear-gradient(135deg, #2563eb, #4f46e5);
    color: white;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

button:disabled {
    opacity: .6;
}

#mesaj {
    margin-bottom: 15px;
    color: #dc2626;
    font-size: 14px;
}

.login-showcase { width: min(560px, 48vw); color: white; }
.login-domain { color: #93c5fd; text-decoration: none; font-weight: 800; }
.login-badge { display: inline-flex; margin-top: 70px; padding: 8px 12px; border-radius: 999px; background: rgba(59,130,246,.16); border: 1px solid rgba(147,197,253,.22); color: #bfdbfe; font-size: 12px; font-weight: 800; letter-spacing: 1.4px; }
.login-showcase h2 { font-size: clamp(38px, 5vw, 66px); line-height: 1.04; margin: 22px 0; letter-spacing: -2px; }
.login-showcase p { color: #cbd5e1; font-size: 18px; line-height: 1.7; max-width: 520px; }
.login-features { display: grid; gap: 13px; color: #dbeafe; font-weight: 700; }
.brand-mark { display:grid; place-items:center; width:42px; height:42px; border-radius:13px; background:linear-gradient(135deg,#2563eb,#7c3aed); color:#fff !important; font-weight:900; }
button { transition: transform .18s ease, box-shadow .18s ease; }
button:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(37,99,235,.24); }
.login-security { margin-top: 22px; padding-top: 18px; border-top: 1px solid #e2e8f0; color: #64748b; text-align: center; font-size: 12px; }

@media (max-width: 900px) {
    .login-shell { flex-direction: column; align-items: stretch; }
    .login-showcase { width: 100%; text-align: center; }
    .login-showcase .login-badge { margin-top: 28px; }
    .login-showcase h2 { font-size: 38px; }
    .login-showcase p { margin-left:auto; margin-right:auto; }
    .login-features { display:none; }
    .login-card { margin: 0 auto; }
}