/* ==========================================================================
   Auth Login — Custom styles (Tailwind extension)
   ========================================================================== */

/* Hiệu ứng icon Material Symbols */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    display: inline-block;
    vertical-align: middle;
}

/* Glass card — nền mờ trong suốt kiểu glassmorphism */
.glass-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Hiệu ứng ánh sáng nền phía sau card */
.ambient-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(22, 163, 74, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

/* Icon trong input */
.input-group .input-icon {
    position: absolute;
    width: 20px;
    height: 20px;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    display: block;
    flex-shrink: 0;
}

.input-group:focus-within .input-icon {
    color: #006b2c;
}

.input-group input {
    min-height: 52px;
}

.input-group input[type="text"],
.input-group input[type="password"] {
    padding-left: 44px;
}

.input-group button svg {
    width: 20px;
    height: 20px;
    display: block;
}

/* Thông báo lỗi validate inline dưới từng field */
.field-error {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 4px;
    font-size: 12px;
    line-height: 16px;
    color: #dc2626;
}
.field-error .material-symbols-outlined {
    font-size: 14px;
}

/* Banner lỗi tổng (khi sai tài khoản/mật khẩu) */
.alert-error {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.3);
    border-radius: 8px;
    font-size: 14px;
    color: #dc2626;
    margin-bottom: 16px;
}
.alert-error .material-symbols-outlined {
    font-size: 18px;
    flex-shrink: 0;
}

/* Banner thành công (sau logout) */
.alert-success {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(22, 163, 74, 0.08);
    border: 1px solid rgba(22, 163, 74, 0.3);
    border-radius: 8px;
    font-size: 14px;
    color: #16a34a;
    margin-bottom: 16px;
}
.alert-success .material-symbols-outlined {
    font-size: 18px;
    flex-shrink: 0;
}

/* Nút submit khi đang loading */
.btn-loading {
    opacity: 0.8;
    cursor: not-allowed;
}

/* Animate spin cho icon loading */
@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}
.animate-spin {
    animation: spin 0.8s linear infinite;
    display: inline-block;
}