/**
 * pf-form frontend styles.
 *
 * States driven by CSS custom property --pf-focus-color (set inline on <form>).
 * Error / submitting states toggled via JS classes:
 *  .pf-field--error     — red ring on the input
 *  .pf-form--submitting — dims form, shows loading state on button
 */

/* ===================================================================
   KEYFRAMES
   =================================================================== */

@keyframes pf-shake {
    0%, 100% { transform: translateX(0); }
    20%       { transform: translateX(-5px); }
    40%       { transform: translateX(5px); }
    60%       { transform: translateX(-4px); }
    80%       { transform: translateX(4px); }
}

@keyframes pf-spin {
    to { transform: rotate(360deg); }
}

/* ===================================================================
   FORM ELEMENTS
   =================================================================== */

.pf-form input:not([type="checkbox"]):not([type="radio"]),
.pf-form select,
.pf-form textarea {
    -webkit-appearance: none !important;
    appearance: none !important;
    background-image: none !important;
    outline: none !important;
    margin: 0 !important;
    line-height: 1.5 !important;
    font-family: inherit !important;
    display: block !important;
    max-width: 100% !important;
    box-shadow: none !important;
    /* Smooth transitions for hover, focus, error */
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease !important;
}

/* Hover — subtle border brightening */
.pf-form input:not([type="checkbox"]):not([type="radio"]):hover,
.pf-form select:hover,
.pf-form textarea:hover {
    border-color: color-mix(in srgb, var(--pf-focus-color) 40%, transparent) !important;
}

/* Focus — refined focus state using a softer shadow */
.pf-form input:not([type="checkbox"]):not([type="radio"]):focus,
.pf-form select:focus,
.pf-form textarea:focus {
    outline: none !important;
    border-color: var(--pf-focus-color) !important;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--pf-focus-color) 8%, transparent) !important;
}

/* Error state — red ring + shadow */
.pf-form .pf-field--error input:not([type="checkbox"]):not([type="radio"]),
.pf-form .pf-field--error select,
.pf-form .pf-field--error textarea,
.pf-form .pf-field--error input[type="checkbox"] {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 0.5px #ef4444, 0 4px 12px rgba(239, 68, 68, 0.35) !important;
    animation: pf-shake 0.35s ease !important;
}

/* Error label hint */
.pf-field--error-hint {
    display: block;
    color: #ef4444;
    font-size: 11px;
    margin-top: 4px;
}

/* Checkboxes / radios */
.pf-form input[type="checkbox"],
.pf-form input[type="radio"] {
    width: auto !important;
    height: auto !important;
    margin: 0 !important;
    flex-shrink: 0;
    transition: box-shadow 0.15s ease !important;
}

.pf-form label {
    cursor: default;
    text-transform: none !important;
    letter-spacing: normal !important;
}

/* Submitting state — dim the whole form */
.pf-form.pf-form--submitting input:not([type="checkbox"]):not([type="radio"]),
.pf-form.pf-form--submitting select,
.pf-form.pf-form--submitting textarea {
    opacity: 0.5 !important;
    pointer-events: none !important;
}

/* ===================================================================
   SUBMIT BUTTON
   =================================================================== */

.pf-form .pf-form-submit {
    -webkit-appearance: none !important;
    appearance: none !important;
    box-shadow: none !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 6px;
    line-height: 1 !important;
    text-decoration: none !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    transition: opacity 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease !important;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.pf-form .pf-form-submit:hover {
    opacity: 0.88;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px color-mix(in srgb, var(--pf-focus-color) 15%, transparent) !important;
}

.pf-form .pf-form-submit:active {
    opacity: 1;
    transform: translateY(0) scale(0.98);
    box-shadow: none !important;
}

.pf-form .pf-form-submit:disabled,
.pf-form.pf-form--submitting .pf-form-submit {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none;
    box-shadow: none !important;
}

/* Loading spinner inside button */
.pf-form-submit .pf-spinner {
    display: inline-block;
    width: 13px;
    height: 13px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: pf-spin 0.7s linear infinite;
    opacity: 0.8;
}

/* ===================================================================
   SHARED
   =================================================================== */

.pf-form-error {
    grid-column: 1 / -1;
}