/* ============================================================================
   CambridgePortal — Client Forms Stylesheet
   Light, brand-forward client surface. Uses only client-* and shared semantic
   tokens from variables.css. No hardcoded values.
   ============================================================================ */

@import url('variables.css');

/* ----------------------------------------------------------------------------
   Page background — sits behind the centred form card.
   ---------------------------------------------------------------------------- */
.form-page {
    min-height: 100vh;
    background-color: var(--client-bg-subtle);
    padding: var(--space-12) var(--space-4);
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* ----------------------------------------------------------------------------
   Form card — centred single-column container.
   ---------------------------------------------------------------------------- */
.form-card {
    width: 100%;
    max-width: var(--form-max-width);
    background-color: var(--client-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-12) var(--space-10);
}

/* ----------------------------------------------------------------------------
   Form header
   ---------------------------------------------------------------------------- */
.form-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.form-header__logo {
    margin: 0 auto var(--space-6);
    max-width: 200px;
    height: auto;
}

.form-header__title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: var(--weight-semibold);
    color: var(--client-text-primary);
    margin-bottom: var(--space-3);
    line-height: var(--leading-tight);
}

.form-header__subtitle {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-regular);
    color: var(--client-text-secondary);
    line-height: var(--leading-relaxed);
}

/* ----------------------------------------------------------------------------
   Multi-step progress indicator
   ---------------------------------------------------------------------------- */
.form-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-10);
    position: relative;
}

.form-steps::before {
    content: '';
    position: absolute;
    top: 18px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--client-step-inactive);
    z-index: var(--z-base);
}

.form-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.form-step__circle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background-color: var(--client-bg);
    border: 2px solid var(--client-step-inactive);
    color: var(--client-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-2);
    transition: all var(--transition-base);
}

.form-step__label {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--client-text-muted);
    text-align: center;
    transition: color var(--transition-base);
}

/* Active state */
.form-step.is-active .form-step__circle {
    background-color: var(--client-step-active);
    border-color: var(--client-step-active);
    color: var(--client-bg);
}

.form-step.is-active .form-step__label {
    color: var(--client-step-active);
    font-weight: var(--weight-semibold);
}

/* Complete state — checkmark replaces number, fills with deep navy */
.form-step.is-complete .form-step__circle {
    background-color: var(--client-step-complete);
    border-color: var(--client-step-complete);
    color: var(--client-bg);
}

.form-step.is-complete .form-step__circle::before {
    content: '\2713'; /* check mark */
    font-size: var(--text-base);
}

.form-step.is-complete .form-step__circle .form-step__number {
    display: none;
}

.form-step.is-complete .form-step__label {
    color: var(--client-step-complete);
    font-weight: var(--weight-medium);
}

/* Progress connector fill — applied to step elements that are complete */
.form-step.is-complete + .form-step::before,
.form-step.is-active::before {
    /* connector fill handled at step level via background; container holds base */
}

/* Filled progress line — overlay matching completed steps. */
.form-steps__progress {
    position: absolute;
    top: 18px;
    left: 0;
    height: 2px;
    background-color: var(--client-step-complete);
    z-index: var(--z-base);
    transition: width var(--transition-slow);
}

/* ----------------------------------------------------------------------------
   Section title — Playfair Display with gold left accent.
   ---------------------------------------------------------------------------- */
.form-section {
    margin-bottom: var(--space-10);
}

.form-section__title {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: var(--weight-semibold);
    color: var(--client-text-primary);
    border-left: 3px solid var(--color-gold);
    padding-left: var(--space-4);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
}

/* ----------------------------------------------------------------------------
   Form fields
   ---------------------------------------------------------------------------- */
.form-field {
    margin-bottom: var(--space-5);
}

.form-field__label {
    display: block;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--client-text-primary);
    margin-bottom: var(--space-2);
}

.form-field__hint {
    display: block;
    font-size: var(--text-xs);
    color: var(--client-text-muted);
    margin-top: var(--space-2);
}

.form-field__input,
.form-field__textarea,
.form-field__select {
    width: 100%;
    background-color: var(--client-input-bg);
    border: 1px solid var(--client-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--client-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-field__input::placeholder,
.form-field__textarea::placeholder {
    color: var(--client-text-muted);
}

.form-field__input:focus,
.form-field__textarea:focus,
.form-field__select:focus {
    outline: none;
    border-color: var(--client-input-focus);
    box-shadow: 0 0 0 3px rgba(0, 108, 216, 0.15);
}

.form-field__textarea {
    min-height: 120px;
    resize: vertical;
    line-height: var(--leading-relaxed);
}

/* ----------------------------------------------------------------------------
   Custom checkboxes and radios
   ---------------------------------------------------------------------------- */
.form-choice {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    margin-right: var(--space-5);
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
    color: var(--client-text-primary);
}

.form-choice__input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.form-choice__control {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    border: 2px solid var(--client-border);
    background-color: var(--client-input-bg);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.form-choice__control--checkbox {
    border-radius: var(--radius-sm);
}

.form-choice__control--radio {
    border-radius: var(--radius-full);
}

.form-choice__input:checked + .form-choice__control {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Checkbox tick */
.form-choice__input:checked + .form-choice__control--checkbox::after {
    content: '\2713';
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
}

/* Radio dot */
.form-choice__input:checked + .form-choice__control--radio::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background-color: var(--color-white);
}

.form-choice__input:focus + .form-choice__control {
    box-shadow: 0 0 0 3px rgba(0, 108, 216, 0.15);
}

/* ----------------------------------------------------------------------------
   File upload field
   ---------------------------------------------------------------------------- */
.form-upload {
    border: 2px dashed var(--client-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    background-color: var(--client-bg);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
    cursor: pointer;
}

.form-upload:hover,
.form-upload.is-dragover {
    border-color: var(--color-primary);
    background-color: var(--color-info-subtle);
}

.form-upload__icon {
    font-size: var(--text-3xl);
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.form-upload__label {
    display: block;
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--client-text-primary);
    margin-bottom: var(--space-2);
}

.form-upload__hint {
    display: block;
    font-size: var(--text-sm);
    color: var(--client-text-muted);
}

.form-upload__input {
    display: none;
}

.form-upload__file {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background-color: var(--client-bg-subtle);
    border-radius: var(--radius-md);
    margin-top: var(--space-4);
    text-align: left;
}

/* The class above sets display:flex, which beats [hidden] { display: none }
   in specificity, so an explicit override is needed for `box.hidden = true`
   to actually hide the row when Remove is clicked. */
.form-upload__file[hidden] {
    display: none;
}

/* Compact variant — used for secondary uploads (e.g. the optional Other-Style
   reference image on the Illustrations Brief). Roughly half the vertical
   weight of the default upload field, suitable for a non-primary CTA. */
.form-upload--compact {
    padding: var(--space-4) var(--space-5);
}
.form-upload--compact .form-upload__icon {
    font-size: var(--text-xl);
    margin-bottom: var(--space-1);
}
.form-upload--compact .form-upload__label {
    font-size: var(--text-sm);
    margin-bottom: var(--space-1);
}
.form-upload--compact .form-upload__hint {
    font-size: var(--text-xs);
}
.form-upload--compact .form-upload__file {
    margin-top: var(--space-3);
    padding: var(--space-2) var(--space-3);
}

.form-upload__file-name {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--client-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.form-upload__file-size {
    font-size: var(--text-xs);
    color: var(--client-text-muted);
}

.form-upload__remove {
    background: transparent;
    border: 0;
    color: var(--color-error);
    font-size: var(--text-sm);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
}

/* ----------------------------------------------------------------------------
   Validation states
   ---------------------------------------------------------------------------- */
.form-field.has-error .form-field__input,
.form-field.has-error .form-field__textarea,
.form-field.has-error .form-field__select {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px var(--color-error-subtle);
}

.form-field.has-success .form-field__input,
.form-field.has-success .form-field__textarea,
.form-field.has-success .form-field__select {
    border-color: var(--color-success);
}

.form-field__error {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-error);
    margin-top: var(--space-2);
}

.form-field__success {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-success);
    margin-top: var(--space-2);
}

/* ----------------------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-tight);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-6);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn--primary:hover:not(:disabled),
.btn--primary:focus:not(:disabled) {
    background-color: var(--color-navy);
    border-color: var(--color-navy);
    text-decoration: none;
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover:not(:disabled),
.btn--secondary:focus:not(:disabled) {
    background-color: var(--color-info-subtle);
    text-decoration: none;
}

.btn--block {
    width: 100%;
}

@media (min-width: 640px) {
    .btn--block {
        width: auto;
    }
}

/* ----------------------------------------------------------------------------
   Form actions row
   ---------------------------------------------------------------------------- */
.form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-8);
}

@media (min-width: 640px) {
    .form-actions {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* ----------------------------------------------------------------------------
   Illustration style selection — 2x2 visual cards, each card has a header
   bar, two reference images side-by-side, and a footer with a radio (or
   checkbox for the "Other" card) indicator. The actual radio/checkbox
   inputs are visually hidden via .visually-hidden so screen readers can
   still tab into them. Selected state uses :has() — supported in all
   modern browsers; a JS .is-selected fallback is wired up in the form
   for older targets.
   ---------------------------------------------------------------------------- */
.style-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-4);
}

@media (max-width: 640px) {
    .style-cards-grid {
        grid-template-columns: 1fr;
    }
}

.style-card {
    display: block;
    background-color: var(--client-bg);
    border: 2px solid var(--client-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--transition-base),
                box-shadow var(--transition-base);
    user-select: none;
}

.style-card:hover {
    border-color: var(--color-primary);
}

/* Selected — works via :has() in modern browsers; .is-selected is a JS
   fallback for older targets and is also set by the form-controller JS. */
.style-card:has(input:checked),
.style-card.is-selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 108, 216, 0.15);
}

.style-card__header {
    background-color: var(--color-navy);
    color: var(--color-white);
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    text-align: center;
    padding: var(--space-3) var(--space-4);
    transition: background-color var(--transition-base);
    line-height: var(--leading-tight);
}

.style-card:has(input:checked) .style-card__header,
.style-card.is-selected .style-card__header {
    background-color: var(--color-primary);
}

.style-card__images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background-color: var(--client-bg-subtle);
}

.style-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

@media (max-width: 640px) {
    .style-card__image {
        height: 240px;
    }
}

.style-card__footer {
    padding: var(--space-3);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--client-bg);
    border-top: 1px solid var(--client-border);
}

.style-card__indicator {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    border: 2px solid var(--client-border);
    background-color: var(--client-bg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-base),
                border-color var(--transition-base);
}

.style-card__indicator--radio    { border-radius: var(--radius-full); }
.style-card__indicator--checkbox { border-radius: var(--radius-sm); }

.style-card:has(input:checked) .style-card__indicator,
.style-card.is-selected .style-card__indicator {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.style-card:has(input[type="radio"]:checked) .style-card__indicator--radio::after,
.style-card.is-selected .style-card__indicator--radio::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background-color: var(--color-white);
}

.style-card:has(input[type="checkbox"]:checked) .style-card__indicator--checkbox::after,
.style-card.is-selected .style-card__indicator--checkbox::after {
    content: '\2713';
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
}

/* Other-style card — full width below the 2x2 grid.
   The selected state is driven entirely by the JS-toggled .is-selected class
   (since the Other card is mutually exclusive with the four style radios and
   the JS controller handles the swap). The visual treatment matches the
   four style cards above: blue border, blue glow, blue header bar, and
   filled checkbox indicator — all already supplied by the .style-card and
   .style-card.is-selected rules higher up. */
.style-card--other {
    margin-top: var(--space-4);
}

.style-card--other.is-selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 108, 216, 0.15);
}
.style-card--other.is-selected .style-card__header {
    background-color: var(--color-primary);
}

/* Smooth reveal of the Other-Style textarea + reference upload field via
   a max-height transition. The open value is generous (800px) because the
   contents now include a textarea, helper hints, the dashed upload box,
   filename display row, and a closing tooltip — about 500px on a desktop
   layout, more on mobile. The animation feels effectively instant once
   max-height passes the content height, which is the desired UX. */
.style-other-block {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) ease;
}

.style-other-block.is-open {
    max-height: 800px;
}

.style-other-block__inner {
    padding-top: var(--space-4);
}

.style-cards-copyright {
    margin-top: var(--space-4);
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
    color: var(--client-text-muted);
    font-style: italic;
    text-align: center;
}

/* ----------------------------------------------------------------------------
   Success screen
   ---------------------------------------------------------------------------- */
.form-success {
    text-align: center;
    padding: var(--space-12) var(--space-6);
}

.form-success__icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background-color: var(--color-success-subtle);
    color: var(--color-success);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
}

.form-success__icon::before {
    content: '\2713';
    font-weight: var(--weight-bold);
}

.form-success__title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: var(--weight-semibold);
    color: var(--client-text-primary);
    margin-bottom: var(--space-4);
}

.form-success__message {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--client-text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.form-success__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    align-items: center;
}

@media (min-width: 640px) {
    .form-success__actions {
        flex-direction: row;
        justify-content: center;
    }
}