.kztc-widget,
.kztc-widget * {
    box-sizing: border-box;
}

.kztc-widget {
    --kztc-accent: #166534;
    --kztc-accent-soft: color-mix(in srgb, var(--kztc-accent) 10%, white);
    position: relative;
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
    width: min(100%, 680px);
    margin: 28px auto;
    padding: 26px;
    overflow: hidden;
    color: #17201b;
    text-align: left;
    background: #fff;
    border: 1px solid #dfe8e1;
    border-radius: 20px;
    box-shadow: 0 6px 18px rgba(15, 42, 24, .06);
    font-family: inherit;
}

.kztc-widget::before {
    position: absolute;
    inset: 0 0 auto;
    height: 4px;
    content: "";
    background: var(--kztc-accent);
}

.kztc-widget-icon {
    display: grid;
    width: 52px;
    height: 52px;
    place-items: center;
    color: var(--kztc-accent);
    background: var(--kztc-accent-soft);
    border-radius: 15px;
}

.kztc-widget-icon svg {
    width: 27px;
    height: 27px;
    fill: currentColor;
}

.kztc-widget h3 {
    margin: 1px 0 6px;
    color: #142019;
    font-size: clamp(20px, 3vw, 25px);
    font-weight: 750;
    line-height: 1.25;
}

.kztc-description {
    margin: 0 0 20px;
    color: #607066;
    font-size: 15px;
    line-height: 1.65;
}

.kztc-stage[hidden],
.kztc-error[hidden] {
    display: none !important;
}

.kztc-primary-btn,
.kztc-copy-btn,
.kztc-next-btn {
    appearance: none;
    border: 0;
    font: inherit;
    cursor: pointer;
}

.kztc-primary-btn {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 11px 22px;
    color: #fff;
    background: var(--kztc-accent);
    border-radius: 11px;
    font-weight: 700;
    transition: filter .15s ease;
}

.kztc-primary-btn:hover {
    filter: brightness(1.08);
}

.kztc-primary-btn:focus-visible,
.kztc-copy-btn:focus-visible,
.kztc-next-btn:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--kztc-accent) 30%, transparent);
    outline-offset: 3px;
}

.kztc-primary-btn:disabled {
    cursor: wait;
    opacity: .7;
}

.kztc-stage-countdown {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 14px 16px;
    background: #f6f9f7;
    border: 1px solid #e1e9e3;
    border-radius: 14px;
}

.kztc-stage-countdown p {
    display: grid;
    gap: 2px;
    margin: 0;
    color: #22342a;
    font-weight: 700;
}

.kztc-stage-countdown small {
    color: #728078;
    font-size: 12px;
    font-weight: 500;
}

.kztc-ring {
    position: relative;
    display: grid;
    flex: 0 0 54px;
    height: 54px;
    place-items: center;
}

.kztc-ring svg {
    position: absolute;
    inset: 0;
    width: 54px;
    height: 54px;
    transform: rotate(-90deg);
}

.kztc-ring circle {
    fill: none;
    stroke-width: 4;
}

.kztc-ring-track { stroke: #dce5df; }

.kztc-ring-progress {
    stroke: var(--kztc-accent);
    stroke-dasharray: 119.4;
    stroke-dashoffset: 0;
    stroke-linecap: round;
    transition: stroke-dashoffset .4s linear;
}

.kztc-seconds {
    color: var(--kztc-accent);
    font-size: 16px;
    font-variant-numeric: tabular-nums;
}

.kztc-stage-result {
    padding: 17px;
    background: var(--kztc-accent-soft);
    border: 1px solid color-mix(in srgb, var(--kztc-accent) 20%, white);
    border-radius: 14px;
}

.kztc-code-label {
    display: block;
    margin-bottom: 7px;
    color: #607066;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.kztc-code-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.kztc-code {
    min-width: 0;
    overflow-wrap: anywhere;
    color: #13271a;
    background: transparent;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: clamp(21px, 5vw, 29px);
    font-weight: 800;
    letter-spacing: .025em;
}

.kztc-copy-btn {
    display: inline-flex;
    flex: 0 0 auto;
    min-height: 38px;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    padding: 8px 12px;
    color: var(--kztc-accent);
    background: #fff;
    border: 1px solid color-mix(in srgb, var(--kztc-accent) 22%, white);
    border-radius: 9px;
    font-size: 12px;
    font-weight: 700;
}

.kztc-copy-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.kztc-valid-until {
    display: block;
    margin-top: 10px;
    color: #68766d;
    font-size: 12px;
}

.kztc-stage-next {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: #f6f9f7;
    border: 1px solid #dfe8e2;
    border-radius: 14px;
}

.kztc-step-check {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    color: #fff;
    background: var(--kztc-accent);
    border-radius: 50%;
}

.kztc-step-check svg {
    width: 23px;
    height: 23px;
    fill: currentColor;
}

.kztc-step-copy {
    display: grid;
    gap: 2px;
}

.kztc-step-copy strong { color: #203329; font-size: 14px; }
.kztc-step-copy small { color: #728078; font-size: 11px; }

.kztc-next-btn {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    padding: 9px 14px;
    color: #fff !important;
    text-decoration: none !important;
    background: var(--kztc-accent);
    border-radius: 9px;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.3;
}

.kztc-next-btn:hover { color: #fff; filter: brightness(1.08); }

/* Widget themes */
.kztc-widget.kztc-no-icon { grid-template-columns: minmax(0, 1fr); }

.kztc-theme-minimal {
    background: #fff;
    border-color: #e1e7e3;
    box-shadow: 0 4px 14px rgba(15, 42, 24, .055);
}

.kztc-theme-soft {
    background: var(--kztc-accent-soft);
    border-color: color-mix(in srgb, var(--kztc-accent) 15%, white);
    box-shadow: none;
}

.kztc-theme-soft .kztc-stage-countdown,
.kztc-theme-soft .kztc-stage-next { background: rgba(255, 255, 255, .72); }

.kztc-theme-outline {
    background: transparent;
    border: 2px solid var(--kztc-accent);
    box-shadow: none;
}

.kztc-theme-outline::before { display: none; }

.kztc-theme-dark {
    color: #eef5f0;
    background: #17201b;
    border-color: #2d3a32;
    box-shadow: none;
}

.kztc-theme-dark h3,
.kztc-theme-dark .kztc-stage-countdown p,
.kztc-theme-dark .kztc-step-copy strong,
.kztc-theme-dark .kztc-code { color: #f4f8f5; }

.kztc-theme-dark .kztc-description,
.kztc-theme-dark .kztc-stage-countdown small,
.kztc-theme-dark .kztc-step-copy small,
.kztc-theme-dark .kztc-code-label,
.kztc-theme-dark .kztc-valid-until { color: #aebbb2; }

.kztc-theme-dark .kztc-stage-countdown,
.kztc-theme-dark .kztc-stage-next { background: #202c25; border-color: #35443a; }
.kztc-theme-dark .kztc-stage-result { background: #202c25; border-color: #35443a; }
.kztc-theme-dark .kztc-copy-btn { background: #17201b; }

/* Simple button variants */
.kztc-button-outline .kztc-primary-btn,
.kztc-button-outline .kztc-next-btn {
    color: var(--kztc-accent) !important;
    background: transparent;
    border: 1px solid var(--kztc-accent);
}

.kztc-button-outline .kztc-primary-btn:hover,
.kztc-button-outline .kztc-next-btn:hover {
    color: #fff !important;
    background: var(--kztc-accent);
}

/* Next Only: only the required action is visible. */
.kztc-theme-next_only {
    display: block;
    width: auto;
    margin: 20px auto;
    padding: 0;
    overflow: visible;
    text-align: center;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.kztc-theme-next_only::before,
.kztc-theme-next_only > .kztc-widget-icon,
.kztc-theme-next_only h3,
.kztc-theme-next_only .kztc-description { display: none; }

.kztc-theme-next_only .kztc-primary-btn,
.kztc-theme-next_only .kztc-next-btn {
    min-width: 120px;
    min-height: 42px;
    padding: 9px 24px;
    border-radius: 7px;
    font-size: 13px;
    letter-spacing: .06em;
}

.kztc-theme-next_only .kztc-stage-countdown {
    display: flex;
    width: auto;
    margin: auto;
    padding: 4px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 0;
    box-shadow: none;
}

.kztc-theme-next_only .kztc-stage-countdown p,
.kztc-theme-next_only .kztc-step-check,
.kztc-theme-next_only .kztc-step-copy { display: none; }

.kztc-theme-next_only .kztc-ring {
    position: relative;
    display: block;
    width: 54px;
    height: 54px;
    flex: 0 0 54px;
    margin: 0;
    padding: 0;
}

.kztc-theme-next_only .kztc-ring svg {
    position: absolute;
    inset: 0;
    display: block;
    width: 54px;
    height: 54px;
    margin: 0;
    padding: 0;
}

.kztc-theme-next_only .kztc-ring circle { stroke-width: 3; }

.kztc-theme-next_only .kztc-seconds {
    position: absolute !important;
    inset: 0 !important;
    z-index: 2;
    display: flex !important;
    width: 54px !important;
    height: 54px !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 !important;
    padding: 0 !important;
    color: var(--kztc-accent) !important;
    font-size: 16px;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    line-height: 1 !important;
    text-align: center !important;
    vertical-align: middle !important;
}

.kztc-theme-next_only .kztc-stage-next {
    display: block;
    padding: 0;
    background: transparent;
    border: 0;
}

.kztc-theme-next_only .kztc-next-btn { width: auto; }

.kztc-theme-next_only .kztc-stage-result {
    max-width: 520px;
    margin: auto;
    text-align: left;
}

.kztc-error {
    margin-top: 12px;
    padding: 11px 13px;
    color: #8a1c1c;
    background: #fff2f2;
    border: 1px solid #f4caca;
    border-radius: 10px;
    font-size: 13px;
}

@media (max-width: 560px) {
    .kztc-widget {
        display: block;
        padding: 22px 18px;
        border-radius: 16px;
    }

    .kztc-widget-icon { margin-bottom: 14px; }
    .kztc-primary-btn { width: 100%; }
    .kztc-code-row { align-items: stretch; flex-direction: column; }
    .kztc-copy-btn { justify-content: center; margin-left: 0; }
    .kztc-stage-next { grid-template-columns: 42px minmax(0, 1fr); }
    .kztc-next-btn { grid-column: 1 / -1; width: 100%; }
    .kztc-theme-next_only .kztc-primary-btn,
    .kztc-theme-next_only .kztc-next-btn { width: min(100%, 220px); }
    .kztc-theme-next_only .kztc-stage-countdown { width: auto; }
}

@media (prefers-reduced-motion: reduce) {
    .kztc-widget *, .kztc-widget *::before, .kztc-widget *::after { transition: none !important; }
}