/**
 * TSSM Sponsor Registration Form Styles
 *
 * Uses CSS custom properties from the tssm-skyline-heritage design-tokens.css.
 * Mobile-first responsive layout.
 *
 * @package TSSM_EventRegistration
 */

/* ==========================================================================
   Form Container
   ========================================================================== */

.tssm-sponsor-reg {
    max-width: var(--layout-narrow-width);
    margin-left: auto;
    margin-right: auto;
    padding: var(--space-6);
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

/* ==========================================================================
   Header
   ========================================================================== */

.tssm-sponsor-reg__header {
    text-align: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--color-border-subtle);
}

.tssm-sponsor-reg__title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.tssm-sponsor-reg__subtitle {
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* ==========================================================================
   Section Headings
   ========================================================================== */

.tssm-sponsor-reg__section {
    margin-bottom: var(--space-6);
}

.tssm-sponsor-reg__section-title {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border-subtle);
}

.tssm-sponsor-reg__section-desc {
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    margin-top: calc(-1 * var(--space-2));
    margin-bottom: var(--space-4);
}

/* ==========================================================================
   Form Rows (Responsive Grid)
   ========================================================================== */

.tssm-sponsor-reg__row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .tssm-sponsor-reg__row {
        grid-template-columns: 1fr 1fr;
    }
}

/* ==========================================================================
   Form Group Overrides
   ========================================================================== */

.tssm-sponsor-reg .tssm-form-group {
    margin-bottom: var(--space-4);
}

/* ==========================================================================
   Required / Optional Indicators
   ========================================================================== */

.tssm-sponsor-reg .tssm-required {
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

.tssm-sponsor-reg .tssm-optional {
    color: var(--color-text-muted);
    font-size: var(--font-size-micro);
    font-weight: var(--font-weight-regular);
}

/* ==========================================================================
   Sponsor Tier Cards
   ========================================================================== */

.tssm-sponsor-tier-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .tssm-sponsor-tier-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tssm-sponsor-tier-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-all);
    text-align: center;
    background: var(--color-surface);
    position: relative;
}

.tssm-sponsor-tier-card:hover:not(.tssm-sponsor-tier-card--disabled) {
    border-color: var(--color-primary);
}

.tssm-sponsor-tier-card--selected {
    border-color: var(--color-primary);
    background: rgba(200, 155, 60, 0.08);
}

.tssm-sponsor-tier-card--disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.tssm-sponsor-tier-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.tssm-sponsor-tier-card__label {
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-2);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
}

.tssm-sponsor-tier-card__price {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-bold);
    color: #fff;
    margin-bottom: var(--space-2);
}

.tssm-sponsor-tier-card__availability {
    font-size: var(--font-size-micro);
    color: var(--color-text-muted);
}

.tssm-sponsor-tier-card--disabled .tssm-sponsor-tier-card__availability {
    color: var(--color-error);
    font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   Logo Upload
   ========================================================================== */

.tssm-sponsor-logo-upload {
    position: relative;
}

.tssm-sponsor-logo-upload__dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-6) var(--space-4);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-all);
    text-align: center;
    min-height: 120px;
}

.tssm-sponsor-logo-upload__dropzone:hover {
    border-color: var(--color-primary);
    background: rgba(200, 155, 60, 0.04);
}

.tssm-sponsor-logo-upload__dropzone--dragover {
    border-color: var(--color-primary);
    background: rgba(200, 155, 60, 0.08);
}

.tssm-sponsor-logo-upload__icon {
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.tssm-sponsor-logo-upload__text {
    font-size: var(--font-size-body);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.tssm-sponsor-logo-upload__hint {
    font-size: var(--font-size-micro);
    color: var(--color-text-muted);
    margin-bottom: 0;
}

.tssm-sponsor-logo-upload__input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Logo Preview */
.tssm-sponsor-logo-preview[hidden] {
    display: none;
}

.tssm-sponsor-logo-preview {
    position: relative;
    display: inline-block;
    margin-top: var(--space-3);
}

.tssm-sponsor-logo-preview__image {
    max-width: 300px;
    max-height: 200px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.tssm-sponsor-logo-preview__remove {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-error);
    color: #fff;
    border: 2px solid var(--color-surface);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: var(--transition-all);
    min-width: 44px;
    min-height: 44px;
}

.tssm-sponsor-logo-preview__remove:hover {
    background: #DC2626;
    transform: scale(1.1);
}

.tssm-sponsor-logo-preview__remove:focus-visible {
    outline: 2px solid var(--color-link);
    outline-offset: 2px;
}

/* ==========================================================================
   Social Media Links Section
   ========================================================================== */

.tssm-sponsor-reg__section input[type="url"] {
    width: 100%;
}

/* ==========================================================================
   Marketing Consent
   ========================================================================== */

.tssm-sponsor-consent {
    margin-top: var(--space-3);
}

.tssm-sponsor-consent__label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    cursor: pointer;
    font-size: var(--font-size-body);
    color: var(--color-text);
    line-height: var(--line-height-normal);
}

.tssm-sponsor-consent__label input[type="checkbox"] {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.tssm-sponsor-consent__label input[type="checkbox"]:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 2px;
}

/* Error state for consent checkbox. */
.tssm-sponsor-consent__label--error input[type="checkbox"] {
    outline: 2px solid var(--color-error);
    outline-offset: 1px;
}

/* ==========================================================================
   Submit Button & Footer
   ========================================================================== */

.tssm-sponsor-reg__footer {
    margin-top: var(--space-6);
    text-align: center;
}

.tssm-sponsor-reg__submit {
    width: 100%;
    max-width: 320px;
    font-size: var(--font-size-body);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    font-weight: var(--font-weight-semibold);
    background-color: var(--color-primary);
    color: var(--color-text);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-all);
    min-height: 48px;
}

.tssm-sponsor-reg__submit:hover {
    background-color: var(--color-primary-light);
}

.tssm-sponsor-reg__submit:focus-visible {
    outline: 2px solid var(--color-link);
    outline-offset: 2px;
}

.tssm-sponsor-reg__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ==========================================================================
   Form Message (success / error banner)
   ========================================================================== */

.tssm-sponsor-reg__message {
    margin-bottom: var(--space-4);
    min-height: 0;
}

.tssm-sponsor-reg__message:empty {
    display: none;
}

.tssm-sponsor-reg__message--error {
    display: block;
    padding: var(--space-3) var(--space-4);
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: var(--font-size-small);
}

.tssm-sponsor-reg__message--success {
    display: block;
    padding: var(--space-3) var(--space-4);
    background-color: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    color: var(--color-success);
    font-size: var(--font-size-small);
}

/* ==========================================================================
   Mobile-first Responsive Adjustments
   ========================================================================== */

@media (max-width: 479px) {
    .tssm-sponsor-reg {
        padding: var(--space-4);
        border-radius: var(--radius-md);
    }

    .tssm-sponsor-reg__title {
        font-size: var(--font-size-h4);
    }

    .tssm-sponsor-reg__submit {
        width: 100%;
        max-width: none;
    }

    .tssm-sponsor-logo-preview__image {
        max-width: 100%;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .tssm-sponsor-reg {
        padding: var(--space-7);
    }
}

@media (min-width: 1024px) {
    .tssm-sponsor-reg {
        padding: var(--space-8);
    }
}