* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font-sans); background: var(--gradient-page); color: var(--text-primary); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }

.auth-layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(380px, 460px);
    gap: 48px;
    align-items: center;
    max-width: 1180px;
    margin: 0 auto;
    padding: 48px 24px;
}
.auth-brand-panel {
    position: relative;
    padding: 42px;
    border: 1px solid rgba(226, 232, 240, 0.78);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255,255,255,0.86), rgba(239,246,255,0.76));
    box-shadow: var(--shadow-card);
    overflow: hidden;
}
.auth-brand-panel::after {
    content: '';
    position: absolute;
    width: 280px;
    height: 280px;
    right: -100px;
    top: -120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,0.18), transparent 62%);
    pointer-events: none;
}
.auth-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 32px; }
.auth-logo-icon { width: 38px; height: 38px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; color: #fff; background: var(--gradient-brand); box-shadow: 0 10px 26px rgba(37,99,235,0.25); }
.auth-brand-title { font-size: 40px; line-height: 1.08; letter-spacing: -0.05em; font-weight: 900; margin: 0 0 16px; }
.auth-brand-desc { font-size: 15px; line-height: 1.8; color: var(--text-secondary); max-width: 560px; margin: 0 0 28px; }
.auth-feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.auth-feature { display: flex; align-items: flex-start; gap: 10px; padding: 14px; border-radius: var(--radius-sm); background: rgba(255,255,255,0.72); border: 1px solid rgba(226,232,240,0.8); }
.auth-feature i { color: var(--primary); font-size: 18px; margin-top: 1px; }
.auth-feature strong { display: block; font-size: 13px; margin-bottom: 2px; }
.auth-feature span { display: block; font-size: 12px; color: var(--text-muted); line-height: 1.5; }

.auth-card {
    width: 100%;
    background: rgba(255,255,255,0.94);
    border: 1px solid rgba(226,232,240,0.92);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-float);
    position: relative;
    overflow: hidden;
}
.auth-card::before { content: ''; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--gradient-brand); }
.auth-card-header { text-align: center; margin-bottom: 26px; }
.auth-card-title { font-size: 24px; font-weight: 850; letter-spacing: -0.04em; margin: 0 0 8px; }
.auth-card-desc { font-size: 13px; color: var(--text-muted); margin: 0; line-height: 1.7; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 700; color: var(--text-secondary); margin-bottom: 7px; }
.form-input {
    width: 100%;
    height: 44px;
    padding: 0 13px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: all 0.18s;
}
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,0.10); }
.form-help { margin-top: 6px; font-size: 12px; color: var(--text-dim); line-height: 1.5; }
.auth-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 4px 0 18px; font-size: 13px; }
.auth-link { color: var(--primary); font-weight: 700; }
.auth-link:hover { color: var(--primary-dark); }
.btn { border: none; outline: none; border-radius: var(--radius-sm); cursor: pointer; font-family: inherit; font-weight: 800; display: inline-flex; align-items: center; justify-content: center; gap: 8px; transition: all 0.18s; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 24px rgba(37,99,235,0.22); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); }
.btn-block { width: 100%; height: 44px; font-size: 14px; }
.auth-footer { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--border-light); text-align: center; font-size: 13px; color: var(--text-muted); }
.auth-security-note { display: flex; align-items: flex-start; gap: 8px; margin-top: 16px; padding: 12px; border-radius: var(--radius-sm); background: rgba(37,99,235,0.055); color: var(--text-secondary); font-size: 12px; line-height: 1.6; }
.auth-security-note i { color: var(--primary); font-size: 15px; margin-top: 1px; }
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast { pointer-events: auto; padding: 12px 18px; border-radius: var(--radius-sm); font-size: 13px; color: #fff; display: flex; align-items: center; gap: 8px; box-shadow: var(--shadow-float); animation: toastIn .25s ease; max-width: 380px; }
.toast.success { background: linear-gradient(135deg,#059669,#10b981); }
.toast.error { background: linear-gradient(135deg,#dc2626,#ef4444); }
.toast.warning { background: linear-gradient(135deg,#d97706,#f59e0b); }
.toast.info { background: linear-gradient(135deg,#1d4ed8,#2563eb); }
.toast.out { animation: toastOut .25s ease forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateX(28px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(28px); } }

@media (max-width: 900px) {
    .auth-layout { grid-template-columns: 1fr; gap: 22px; padding: 28px 18px; }
    .auth-brand-panel { padding: 28px; }
    .auth-brand-title { font-size: 30px; }
    .auth-feature-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
    .auth-layout { padding: 18px 14px; }
    .auth-card { padding: 30px 22px; }
    .auth-brand-panel { display: none; }
    .toast-container { left: 14px; right: 14px; }
    .toast { max-width: none; }
}