.auth-modal-overlay {
    position: fixed; inset: 0;
    background: rgba(10, 14, 22, 0.55);
    backdrop-filter: blur(6px);
    z-index: 10000;
    display: none; align-items: center; justify-content: center;
    padding: 20px;
}
.auth-modal-overlay.active { display: flex; }

.auth-modal {
    background: var(--bg-color, #fff);
    width: 100%; max-width: 440px;
    border: 1px solid var(--border-color, #e5e5e5);
    box-shadow: 0 24px 64px rgba(0,0,0,0.16);
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}
.auth-modal::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--accent, #0055ff), transparent);
}

.auth-modal-close {
    position: absolute;
    top: 20px; right: 24px;
    background: none; border: none; cursor: pointer;
    font-family: var(--font-mono, monospace); font-size: 11px; font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-sub, #666);
    padding: 4px 6px;
    transition: color 0.2s;
}
.auth-modal-close:hover { color: var(--accent, #0055ff); }

.auth-modal-body { padding: 48px 40px 40px; }

.auth-modal-header { margin-bottom: 28px; text-align: left; }
.auth-modal-tag {
    font-family: var(--font-mono, monospace); font-size: 11px; font-weight: 700;
    color: var(--accent, #0055ff); letter-spacing: 1px; text-transform: uppercase;
    display: inline-flex; align-items: center; gap: 8px;
    margin: 0 0 14px;
}
.auth-modal-tag::before { content: ""; display: block; width: 6px; height: 6px; background: var(--accent, #0055ff); flex-shrink: 0; }

.auth-modal-cmd {
    font-family: var(--font-sans, sans-serif); font-size: 1.5rem; font-weight: 800;
    color: var(--text-main, #000); margin: 0 0 8px; line-height: 1.3;
}
.auth-modal-subtitle { color: var(--text-sub, #666); font-size: 13px; line-height: 1.6; margin: 0; }
.auth-subtitle-inline { margin-bottom: 20px; }
.auth-emphasis { color: var(--text-main, #000); font-weight: 700; }

.auth-form-group { margin-bottom: 20px; }
.auth-label {
    display: flex; align-items: center; gap: 6px;
    font-family: var(--font-mono, monospace);
    font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
    margin-bottom: 10px; color: var(--text-sub, #666);
}
.auth-label::before { content: ""; display: block; width: 4px; height: 4px; background: var(--border-color, #ccc); flex-shrink: 0; }

.auth-input {
    width: 100%; padding: 12px 2px;
    border: none;
    border-bottom: 2px solid var(--border-color, #e5e5e5);
    font-family: var(--font-sans, sans-serif); font-size: 15px; font-weight: 500;
    color: var(--text-main, #000);
    outline: none; transition: border-color 0.2s, box-shadow 0.2s;
    background: transparent;
}
.auth-input:focus { border-color: var(--accent, #0055ff); box-shadow: 0 1px 0 0 var(--accent, #0055ff); }

.auth-code-container { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin: 24px 0; }
.auth-code-input {
    width: 100%; height: 52px; text-align: center;
    border: none;
    border-bottom: 2px solid var(--border-color, #e5e5e5);
    font-family: var(--font-mono, monospace);
    font-size: 1.4rem; font-weight: 700;
    color: var(--text-main, #000);
    outline: none;
    background: transparent;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.auth-code-input:focus { border-color: var(--accent, #0055ff); box-shadow: 0 1px 0 0 var(--accent, #0055ff); }

.auth-code-footer { display: flex; align-items: center; justify-content: center; gap: 12px; }
.auth-countdown {
    font-family: var(--font-mono, monospace); font-size: 11px; font-weight: 700;
    color: var(--text-sub, #666); letter-spacing: 0.3px;
}

.auth-btn-submit {
    width: 100%; padding: 16px;
    background: var(--text-main, #000); color: var(--bg-color, #fff); border: none;
    font-family: var(--font-mono, monospace); font-weight: 700;
    font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; cursor: pointer;
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
    transition: all 0.2s ease;
    margin-top: 4px;
}
.auth-btn-submit:hover { background: var(--accent, #0055ff); color: #fff; }

.auth-actions-row { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; }
.auth-actions-row .auth-link-btn { margin-top: 0; }

.auth-link-btn {
    background: none; border: none; color: var(--text-sub, #666);
    font-family: var(--font-mono, monospace); font-size: 11px;
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.3px; cursor: pointer;
    margin-top: 20px; display: inline-flex; align-items: center; gap: 4px; transition: color 0.2s;
    padding: 0;
}
.auth-link-btn::before { content: "›"; font-family: var(--font-mono, monospace); }
.auth-link-btn:hover { color: var(--accent, #0055ff); }
.auth-link-back::before { content: "‹"; }
.auth-link-danger { color: var(--danger, #ef4444); }
.auth-link-danger:hover { color: var(--danger, #ef4444); opacity: 0.75; }

.auth-error-msg {
    display: none;
    align-items: center; gap: 10px;
    background: rgba(239, 68, 68, 0.06);
    border-left: 3px solid var(--danger, #ef4444);
    color: var(--danger, #ef4444);
    padding: 12px 14px;
    font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.auth-error-msg::before { content: "!"; flex-shrink: 0; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--danger, #ef4444); font-size: 10px; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; }
.auth-error-msg.active { display: flex; }