/* StitchKit — Design System components.

   Classes prefixadas com .sk-* (novo design system). Convenção BEM:
   .sk-<block>, .sk-<block>__<elem>, .sk-<block>--<modifier>.

   Todas as cores, tipografias, espaçamentos, radii, shadows e motion vêm de
   tokens em theme.css — não há literais hex/rgb neste ficheiro. Se um
   valor não estiver coberto por tokens, o tokens é que tem de ser estendido.
*/

/* ===========================================================================
   Reset / base
   =========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

.sk-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===========================================================================
   Typography utilities
   =========================================================================== */

.sk-display-1 {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-5xl);
    font-weight: var(--sk-weight-regular);
    line-height: var(--sk-leading-tight);
    letter-spacing: -0.02em;
    color: var(--sk-color-ink);
}

.sk-display-1 em {
    font-style: italic;
    color: var(--sk-color-accent);
}

.sk-display-2 {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-4xl);
    font-weight: var(--sk-weight-regular);
    line-height: var(--sk-leading-tight);
    letter-spacing: -0.01em;
    color: var(--sk-color-ink);
}

.sk-heading-1 {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-3xl);
    font-weight: var(--sk-weight-regular);
    line-height: var(--sk-leading-snug);
    color: var(--sk-color-ink);
}

.sk-heading-2 {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-2xl);
    font-weight: var(--sk-weight-medium);
    line-height: var(--sk-leading-snug);
    color: var(--sk-color-ink);
}

.sk-heading-3 {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-xl);
    font-weight: var(--sk-weight-semibold);
    line-height: var(--sk-leading-snug);
    color: var(--sk-color-ink);
}

.sk-body {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-lg);
    line-height: var(--sk-leading-relaxed);
    color: var(--sk-color-ink-soft);
}

.sk-body--sm {
    font-size: var(--sk-text-md);
}

.sk-body--muted {
    color: var(--sk-color-muted);
}

.sk-label {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-sm);
    font-weight: var(--sk-weight-medium);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sk-color-muted);
}

.sk-caption {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-xs);
    line-height: var(--sk-leading-normal);
    color: var(--sk-color-subtle);
}

.sk-mono {
    font-family: var(--sk-font-mono);
    font-size: var(--sk-text-sm);
}

/* ===========================================================================
   Button
   =========================================================================== */

.sk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sk-space-2);
    padding: 0 var(--sk-space-5);
    height: 44px;
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    font-weight: var(--sk-weight-semibold);
    line-height: 1;
    color: var(--sk-color-accent-contrast);
    background: var(--sk-color-accent);
    border: 1px solid var(--sk-color-accent);
    border-radius: var(--sk-radius-md);
    cursor: pointer;
    text-decoration: none;
    transition:
        background-color var(--sk-duration-fast) var(--sk-ease-out-quart),
        border-color var(--sk-duration-fast) var(--sk-ease-out-quart),
        color var(--sk-duration-fast) var(--sk-ease-out-quart),
        box-shadow var(--sk-duration-fast) var(--sk-ease-out-quart),
        transform var(--sk-duration-instant) var(--sk-ease-out-quart);
}

.sk-btn:hover {
    background: var(--sk-color-accent-hover);
    border-color: var(--sk-color-accent-hover);
}

.sk-btn:active {
    background: var(--sk-color-accent-active);
    border-color: var(--sk-color-accent-active);
    transform: translateY(1px);
}

.sk-btn:focus-visible {
    outline: none;
    box-shadow: var(--sk-focus-ring);
}

.sk-btn[disabled],
.sk-btn[aria-disabled='true'] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.sk-btn--secondary {
    color: var(--sk-color-ink);
    background: var(--sk-color-surface);
    border-color: var(--sk-color-border-strong);
}

.sk-btn--secondary:hover {
    background: var(--sk-color-surface-alt);
    border-color: var(--sk-color-ink-soft);
}

.sk-btn--secondary:active {
    background: var(--sk-color-surface-alt);
}

.sk-btn--ghost {
    color: var(--sk-color-ink);
    background: transparent;
    border-color: transparent;
}

.sk-btn--ghost:hover {
    background: var(--sk-color-surface-alt);
    border-color: transparent;
}

.sk-btn--link {
    height: auto;
    padding: 0;
    color: var(--sk-color-accent);
    background: transparent;
    border: none;
    text-decoration: none;
    font-weight: var(--sk-weight-medium);
}

.sk-btn--link:hover {
    color: var(--sk-color-accent-hover);
    text-decoration: underline;
}

.sk-btn--danger {
    background: var(--sk-color-danger);
    border-color: var(--sk-color-danger);
}

.sk-btn--danger:hover {
    background: color-mix(in srgb, var(--sk-color-danger) 88%, black);
    border-color: color-mix(in srgb, var(--sk-color-danger) 88%, black);
}

.sk-btn--sm {
    height: 36px;
    padding: 0 var(--sk-space-4);
    font-size: var(--sk-text-sm);
}

.sk-btn--lg {
    height: 52px;
    padding: 0 var(--sk-space-6);
    font-size: var(--sk-text-lg);
}

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

.sk-btn__icon {
    display: inline-flex;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ===========================================================================
   Card
   =========================================================================== */

.sk-card {
    background: var(--sk-color-surface);
    border: 1px solid var(--sk-color-border);
    border-radius: var(--sk-radius-xl);
    box-shadow: var(--sk-shadow-xs);
    overflow: hidden;
}

.sk-card--elevated {
    box-shadow: var(--sk-shadow-md);
}

.sk-card--accent {
    border-color: var(--sk-color-accent);
    box-shadow: var(--sk-shadow-md);
}

.sk-card__header,
.sk-card__body,
.sk-card__footer {
    padding: var(--sk-space-6);
}

.sk-card__header {
    border-bottom: 1px solid var(--sk-color-border);
}

.sk-card__footer {
    border-top: 1px solid var(--sk-color-border);
    background: var(--sk-color-surface-alt);
}

/* ===========================================================================
   Modal
   =========================================================================== */

.sk-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: var(--sk-z-modal);
    background: color-mix(in srgb, var(--sk-color-ink) 45%, transparent);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sk-space-6);
    animation: sk-fade-in var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-modal {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: calc(100vh - var(--sk-space-12));
    overflow-y: auto;
    background: var(--sk-color-surface);
    border-radius: var(--sk-radius-xl);
    box-shadow: var(--sk-shadow-xl);
    animation: sk-slide-up var(--sk-duration-medium) var(--sk-ease-out-expo);
}

.sk-modal--lg {
    max-width: 720px;
}

.sk-modal--xl {
    max-width: 960px;
}

.sk-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sk-space-6);
    border-bottom: 1px solid var(--sk-color-border);
}

.sk-modal__title {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-2xl);
    font-weight: var(--sk-weight-medium);
    margin: 0;
}

.sk-modal__close {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--sk-radius-sm);
    color: var(--sk-color-muted);
    cursor: pointer;
    transition: background-color var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-modal__close:hover {
    background: var(--sk-color-surface-alt);
    color: var(--sk-color-ink);
}

.sk-modal__body {
    padding: var(--sk-space-6);
}

.sk-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--sk-space-3);
    padding: var(--sk-space-6);
    border-top: 1px solid var(--sk-color-border);
    background: var(--sk-color-surface-alt);
}

@keyframes sk-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes sk-slide-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===========================================================================
   Input
   =========================================================================== */

.sk-field {
    display: flex;
    flex-direction: column;
    gap: var(--sk-space-2);
}

.sk-field__label {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    font-weight: var(--sk-weight-medium);
    color: var(--sk-color-ink);
}

.sk-field__label--required::after {
    content: ' *';
    color: var(--sk-color-danger);
}

.sk-input {
    width: 100%;
    height: 44px;
    padding: 0 var(--sk-space-4);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    color: var(--sk-color-ink);
    background: var(--sk-color-surface);
    border: 1px solid var(--sk-color-border-strong);
    border-radius: var(--sk-radius-md);
    transition:
        border-color var(--sk-duration-fast) var(--sk-ease-out-quart),
        box-shadow var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-input::placeholder {
    color: var(--sk-color-subtle);
}

.sk-input:focus {
    outline: none;
    border-color: var(--sk-color-accent);
    box-shadow: var(--sk-focus-ring);
}

.sk-input[aria-invalid='true'] {
    border-color: var(--sk-color-danger);
}

.sk-field__hint {
    font-size: var(--sk-text-sm);
    color: var(--sk-color-muted);
}

.sk-field__error {
    font-size: var(--sk-text-sm);
    color: var(--sk-color-danger);
}

/* ===========================================================================
   Badge
   =========================================================================== */

.sk-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sk-space-1);
    padding: 0 var(--sk-space-3);
    height: 24px;
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-xs);
    font-weight: var(--sk-weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--sk-color-ink);
    background: var(--sk-color-surface-alt);
    border: 1px solid var(--sk-color-border);
    border-radius: var(--sk-radius-full);
    white-space: nowrap;
}

.sk-badge--success { color: var(--sk-color-success); background: var(--sk-color-success-soft); border-color: transparent; }
.sk-badge--warn    { color: var(--sk-color-warn);    background: var(--sk-color-warn-soft);    border-color: transparent; }
.sk-badge--danger  { color: var(--sk-color-danger);  background: var(--sk-color-danger-soft);  border-color: transparent; }
.sk-badge--info    { color: var(--sk-color-accent);  background: var(--sk-color-accent-soft);  border-color: transparent; }

.sk-badge__dot {
    width: 6px;
    height: 6px;
    border-radius: var(--sk-radius-full);
    background: currentColor;
}

/* ===========================================================================
   Stepper
   =========================================================================== */

.sk-stepper {
    display: flex;
    align-items: center;
    gap: var(--sk-space-2);
}

.sk-stepper__step {
    display: flex;
    align-items: center;
    gap: var(--sk-space-2);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-sm);
    color: var(--sk-color-muted);
}

.sk-stepper__bullet {
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--sk-text-xs);
    font-weight: var(--sk-weight-semibold);
    color: var(--sk-color-muted);
    background: var(--sk-color-surface);
    border: 1.5px solid var(--sk-color-border-strong);
    border-radius: var(--sk-radius-full);
}

.sk-stepper__step--active .sk-stepper__bullet {
    color: var(--sk-color-accent-contrast);
    background: var(--sk-color-accent);
    border-color: var(--sk-color-accent);
}

.sk-stepper__step--done .sk-stepper__bullet {
    color: var(--sk-color-success);
    background: var(--sk-color-success-soft);
    border-color: var(--sk-color-success);
}

.sk-stepper__separator {
    flex: 1;
    height: 1.5px;
    background: var(--sk-color-border-strong);
    min-width: 24px;
}

/* ===========================================================================
   NavLink
   =========================================================================== */

.sk-navlink {
    display: inline-flex;
    align-items: center;
    padding: var(--sk-space-2) var(--sk-space-3);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    color: var(--sk-color-ink-soft);
    text-decoration: none;
    border-radius: var(--sk-radius-sm);
    transition: color var(--sk-duration-fast) var(--sk-ease-out-quart), background-color var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-navlink:hover {
    color: var(--sk-color-ink);
    background: var(--sk-color-surface-alt);
}

.sk-navlink--active {
    color: var(--sk-color-accent);
    font-weight: var(--sk-weight-medium);
}

/* ===========================================================================
   Tabs
   =========================================================================== */

.sk-tabs {
    display: flex;
    gap: var(--sk-space-1);
    padding: var(--sk-space-1);
    background: var(--sk-color-surface-alt);
    border-radius: var(--sk-radius-full);
    width: fit-content;
}

.sk-tabs__tab {
    padding: var(--sk-space-2) var(--sk-space-5);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    font-weight: var(--sk-weight-medium);
    color: var(--sk-color-muted);
    background: transparent;
    border: none;
    border-radius: var(--sk-radius-full);
    cursor: pointer;
    transition:
        color var(--sk-duration-fast) var(--sk-ease-out-quart),
        background-color var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-tabs__tab:hover {
    color: var(--sk-color-ink);
}

.sk-tabs__tab[aria-selected='true'] {
    color: var(--sk-color-ink);
    background: var(--sk-color-surface);
    box-shadow: var(--sk-shadow-xs);
}

/* ===========================================================================
   Accordion
   =========================================================================== */

.sk-accordion {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--sk-color-border);
}

.sk-accordion__item {
    border-bottom: 1px solid var(--sk-color-border);
}

.sk-accordion__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sk-space-4);
    padding: var(--sk-space-5) 0;
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-lg);
    font-weight: var(--sk-weight-medium);
    color: var(--sk-color-ink);
    background: transparent;
    border: none;
    text-align: left;
    cursor: pointer;
}

.sk-accordion__trigger:hover {
    color: var(--sk-color-accent);
}

.sk-accordion__icon {
    width: 20px;
    height: 20px;
    color: var(--sk-color-muted);
    transition: transform var(--sk-duration-fast) var(--sk-ease-out-quart);
}

.sk-accordion__item[data-open='true'] .sk-accordion__icon {
    transform: rotate(45deg);
}

.sk-accordion__content {
    padding: 0 0 var(--sk-space-5);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    line-height: var(--sk-leading-relaxed);
    color: var(--sk-color-muted);
    display: none;
}

.sk-accordion__item[data-open='true'] .sk-accordion__content {
    display: block;
}

/* ===========================================================================
   Avatar
   =========================================================================== */

.sk-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    font-weight: var(--sk-weight-semibold);
    color: var(--sk-color-accent-contrast);
    background: var(--sk-color-accent);
    border-radius: var(--sk-radius-full);
    overflow: hidden;
    user-select: none;
}

.sk-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sk-avatar--sm { width: 24px; height: 24px; font-size: var(--sk-text-xs); }
.sk-avatar--lg { width: 64px; height: 64px; font-size: var(--sk-text-xl); }

/* ===========================================================================
   Pricing card
   =========================================================================== */

.sk-pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--sk-space-5);
    padding: var(--sk-space-8);
    background: var(--sk-color-surface);
    border: 1px solid var(--sk-color-border);
    border-radius: var(--sk-radius-xl);
    min-width: 280px;
}

.sk-pricing-card--highlight {
    border-color: var(--sk-color-accent);
    box-shadow: var(--sk-shadow-md);
}

.sk-pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--sk-space-1) var(--sk-space-4);
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-xs);
    font-weight: var(--sk-weight-semibold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--sk-color-accent-contrast);
    background: var(--sk-color-accent);
    border-radius: var(--sk-radius-full);
}

.sk-pricing-card__name {
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-2xl);
    font-weight: var(--sk-weight-medium);
    color: var(--sk-color-ink);
    margin: 0;
}

.sk-pricing-card__tagline {
    font-size: var(--sk-text-md);
    color: var(--sk-color-muted);
    margin: 0;
}

.sk-pricing-card__price {
    display: flex;
    align-items: baseline;
    gap: var(--sk-space-2);
    font-family: var(--sk-font-display);
    font-size: var(--sk-text-5xl);
    font-weight: var(--sk-weight-regular);
    line-height: 1;
    color: var(--sk-color-ink);
}

.sk-pricing-card__currency {
    font-size: var(--sk-text-xl);
    color: var(--sk-color-muted);
}

.sk-pricing-card__period {
    font-family: var(--sk-font-body);
    font-size: var(--sk-text-md);
    color: var(--sk-color-muted);
}

.sk-pricing-card__features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--sk-space-3);
}

.sk-pricing-card__features li {
    display: flex;
    align-items: flex-start;
    gap: var(--sk-space-2);
    font-size: var(--sk-text-md);
    color: var(--sk-color-ink-soft);
}

.sk-pricing-card__check {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    color: var(--sk-color-success);
    margin-top: 4px;
}

/* ===========================================================================
   Progress bar
   =========================================================================== */

.sk-progress {
    width: 100%;
    height: 8px;
    background: var(--sk-color-surface-alt);
    border-radius: var(--sk-radius-full);
    overflow: hidden;
}

.sk-progress__fill {
    height: 100%;
    background: var(--sk-color-accent);
    transition: width var(--sk-duration-medium) var(--sk-ease-out-quart);
    border-radius: var(--sk-radius-full);
}

.sk-progress--success .sk-progress__fill { background: var(--sk-color-success); }
.sk-progress--warn    .sk-progress__fill { background: var(--sk-color-warn); }
.sk-progress--danger  .sk-progress__fill { background: var(--sk-color-danger); }

.sk-progress-row {
    display: flex;
    flex-direction: column;
    gap: var(--sk-space-2);
}

.sk-progress-row__meta {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: var(--sk-text-sm);
    color: var(--sk-color-muted);
}

.sk-progress-row__meta strong {
    color: var(--sk-color-ink);
    font-weight: var(--sk-weight-semibold);
}