/* ==========================================================================
   AUTH — Login & Register · Premium Green Theme
   ========================================================================== */

.auth-page {
    padding: 40px 0 60px;
    min-height: calc(100vh - 64px);
}

/* ─── Card ── */
.auth-box {
    background: var(--v-card-bg);
    border: 1px solid var(--v-card-border);
    border-radius: 24px;
    padding: 36px 32px;
    box-shadow: var(--v-shadow-lg);
}

/* ─── Input ── */
.auth-input {
    width: 100%;
    padding: 11px 16px;
    border-radius: 12px;
    border: 1.5px solid var(--v-input-border);
    background: var(--v-input-bg);
    color: var(--v-text);
    font-size: 0.88rem;
    font-weight: 600;
    outline: none;
    transition: all 0.2s;
    font-family: inherit;
}
.auth-input:focus {
    border-color: var(--v-accent);
    box-shadow: 0 0 0 3px var(--v-accent-soft);
}
.auth-input::placeholder { color: var(--v-text-muted); }
select.auth-input { cursor: pointer; }

.auth-err {
    font-size: 0.72rem;
    font-weight: 700;
    color: #ef4444;
    margin-top: 3px;
}

/* ─── Button ── */
.auth-btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 13px 18px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--v-accent-dark), var(--v-accent));
    color: #fff;
    font-weight: 800;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 8px 24px rgba(16,185,129,0.25);
    transition: all 0.3s cubic-bezier(0.16,1,0.3,1);
}
.auth-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(16,185,129,0.35);
}

/* ─── Social ── */
.auth-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 16px;
    border-radius: 12px;
    background: var(--v-card-bg);
    border: 1px solid var(--v-card-border);
    color: var(--v-text);
    font-weight: 700;
    font-size: 0.88rem;
    text-decoration: none;
    transition: all 0.2s;
}
.auth-social:hover {
    border-color: var(--v-accent-border);
    box-shadow: var(--v-shadow-hover);
    transform: translateY(-1px);
}

/* ══════════════════════════════════════════════════════════════════════════
   REGISTER — Visual Card
══════════════════════════════════════════════════════════════════════════ */
.auth-visual-card {
    background: linear-gradient(135deg, #d1fae5, #a7f3d0, #ecfdf5);
    border-radius: 24px;
    padding: 36px 32px;
    min-height: 400px;
    position: relative;
    overflow: hidden;
}
.auth-visual-card::after {
    content: "日本語";
    position: absolute;
    right: -15px;
    bottom: -30px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 6rem;
    font-weight: 900;
    color: rgba(16,185,129,0.10);
    pointer-events: none;
}

.auth-roadmap {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.auth-road-item {
    background: var(--v-card-bg);
    border: 1px solid var(--v-card-border);
    border-radius: 14px;
    padding: 14px 16px;
    box-shadow: var(--v-shadow);
}
.auth-road-item strong {
    display: block;
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--v-accent-dark);
    margin-bottom: 2px;
}
.auth-road-item span {
    display: block;
    font-size: 0.82rem;
    color: var(--v-text-secondary);
    font-weight: 600;
}

/* ══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 767px) {
    .auth-page { padding: 24px 0 40px; min-height: auto; }
    .auth-box { padding: 28px 20px; border-radius: 20px; }
    .auth-input { padding: 10px 14px; font-size: 0.85rem; }
    .auth-visual-card { padding: 24px 20px; min-height: 300px; }
}