/**
 * 1688Buyer Unified Form Design System
 * Enforces B2B standard form controls, inline validation errors, and lifecycle states.
 */

/* Form Group & Grid */
.form-group {
    position: relative;
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

/* Form Label */
.form-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 6px;
    line-height: 1.4;
}

.form-required {
    color: #ef4444;
    margin-left: 2px;
    font-weight: 600;
}

/* Base Inputs & Controls */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    min-height: 36px;
    box-sizing: border-box;
    padding: 7px 12px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 13px;
    color: #111827;
    background: #ffffff;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #9ca3af;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: #9ca3af;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: #ff5000;
    box-shadow: none;
    outline: none;
}

/* Disabled State */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: #f8fafc;
    border-color: #e2e8f0;
    color: #94a3b8;
    cursor: not-allowed;
    opacity: 0.75;
}

/* Error / Validation Highlight State */
.form-input.has-error,
.form-input.is-invalid,
.form-select.has-error,
.form-select.is-invalid,
.form-textarea.has-error,
.form-textarea.is-invalid,
.form-group.has-error .form-input,
.form-group.has-error .form-select,
.form-group.has-error .form-textarea {
    border-color: #ef4444 !important;
    background-color: #fff5f5 !important;
    box-shadow: none !important;
}

/* Inline Error Message */
.form-inline-error {
    font-size: 11.5px;
    color: #ef4444;
    margin-top: 5px;
    line-height: 1.4;
    display: none;
    font-weight: 400;
}

.form-group.has-error .form-inline-error,
.form-inline-error.is-visible {
    display: block;
}

/* Form Alert Banners (Top-level messages) */
.form-alert {
    padding: 10px 14px;
    border-radius: 4px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    line-height: 1.4;
}

.form-alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
}

.form-alert-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #15803d;
}

.form-alert-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #b45309;
}

/* Buttons & Submitting / Loading Lifecycle */
.btn-primary {
    background: #ff5000;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.btn-primary:hover:not(:disabled) {
    background: #e04600;
}

.btn-primary:active:not(:disabled) {
    background: #cc3d00;
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    border: 1px solid #eaedf1;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.15s ease;
}

.btn-secondary:hover:not(:disabled) {
    background: #e5e7eb;
}

/* Submitting / Loading Button State */
.btn-submitting,
.is-loading,
button.is-submitting,
button.is-loading,
input[type="submit"].is-submitting {
    cursor: not-allowed !important;
    pointer-events: none !important;
    opacity: 0.85 !important;
    user-select: none !important;
}

.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: form-system-spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
    flex-shrink: 0;
}

.btn-secondary .btn-spinner,
.btn-clean-link .btn-spinner,
.btn-summary-link .btn-spinner {
    border: 2px solid rgba(55, 65, 81, 0.2);
    border-top-color: #374151;
}

/* Unified Action Link with > Chevron Standard */
.btn-action-link,
.btn-clean-link,
.btn-summary-link {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    background: transparent;
    border: none;
    color: #ff5000;
    font-size: 13px;
    font-weight: 400;
    padding: 0;
    cursor: pointer;
    text-decoration: none;
    user-select: none;
    transition: color 0.15s ease;
}

.btn-action-link:hover:not(:disabled),
.btn-clean-link:hover:not(:disabled),
.btn-summary-link:hover:not(:disabled) {
    color: #e04400;
}

.btn-action-link svg,
.btn-clean-link svg,
.btn-summary-link svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    transition: transform 0.15s ease;
}

.btn-action-link:hover:not(:disabled) svg,
.btn-clean-link:hover:not(:disabled) svg,
.btn-summary-link:hover:not(:disabled) svg {
    transform: translateX(2px);
}

/* Form Submitting Readonly & Interactive Lock Standard */
form.is-submitting input:not([type="hidden"]),
form.is-submitting textarea,
form.is-submitting select,
.is-readonly-submitting {
    background-color: #f8fafc !important;
    border-color: #e2e8f0 !important;
    color: #64748b !important;
    pointer-events: none !important;
    cursor: not-allowed !important;
    user-select: none !important;
}

form.is-submitting button:not([type="submit"]),
form.is-submitting [role="button"],
form.is-submitting .checkout-option-item,
form.is-submitting .summary-service-card,
form.is-submitting .summary-wh-card,
form.is-submitting .deposit-summary-pill,
form.is-submitting .checkout-address-compact-card,
form.is-submitting .checkout-products-summary-card,
.is-disabled-submitting {
    pointer-events: none !important;
    cursor: not-allowed !important;
    opacity: 0.65 !important;
    user-select: none !important;
}

@keyframes form-system-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}