/* ════ LOGIN ════ */
#login-screen { display: none; flex-direction: column; align-items: center; justify-content: center; min-height: calc(100vh - 120px); padding: 40px 20px; }
#login-screen.active { display: flex; }
.login-logo { width: 280px; max-width: 100%; margin-top: 60px; margin-bottom: 50px; display: block; }
.login-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--brand); border-radius: var(--radius-lg); padding: 44px 40px; width: 360px; text-align: center; }
.login-card h2 { font-family: var(--font-d); font-size: 22px; letter-spacing: 3px; color: var(--brand-light); margin-bottom: 6px; }
.login-card p { font-size: 13px; color: var(--muted); margin-bottom: 28px; line-height: 1.5; }
.field { text-align: left; margin-bottom: 18px; }
.field label { font-size: 11px; color: var(--muted); letter-spacing: 1.5px; text-transform: uppercase; display: block; margin-bottom: 6px; }
.field input { width: 100%; background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 11px 14px; border-radius: var(--radius-sm); font-size: 14px; font-family: var(--font-b); outline: none; transition: border-color .2s; }
.field input:focus { border-color: var(--brand-light); }
.btn-primary { width: 100%; background: var(--brand); color: #fff; border: none; padding: 13px; border-radius: var(--radius-sm); font-family: var(--font-d); font-size: 16px; letter-spacing: 3px; cursor: pointer; transition: background .2s; margin-top: 8px; }
.btn-primary:hover { background: var(--brand-light); }
.error-msg { color: var(--danger); font-size: 13px; margin-top: 10px; display: none; }