/* ============================================
   CIDR Calculator
   ============================================ */

@keyframes cidrReveal {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes cidrPop {
    from {
        opacity: 0;
        transform: scale(0.88) translateY(6px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes cidrFloat {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

@keyframes cidrShake {
    0%,
    100% {
        transform: translateX(0);
    }
    20% {
        transform: translateX(-6px);
    }
    40% {
        transform: translateX(6px);
    }
    60% {
        transform: translateX(-4px);
    }
    80% {
        transform: translateX(4px);
    }
}

.cidr-page-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 640px;
    margin: 2rem auto;
    padding: 1.5rem;
    animation: cidrReveal 0.5s ease-out;
}

.cidr-page-container .grid-card {
    display: flex;
    flex-direction: column;
    background: var(--surface-1);
    border: 1px solid var(--surface-2);
    border-radius: var(--radius-2);
    transition:
        background 0.3s ease,
        border-color 0.3s ease,
        transform 0.3s ease;
}

.cidr-page-container .grid-card:hover {
    background: var(--surface-2);
    border-color: var(--accent-color-translucent);
    transform: translateY(-4px);
}

.cidr-page-container .card-header {
    padding: 1.25rem 1.5rem;
    color: var(--accent-color);
    border-bottom: 1px solid var(--surface-2);
}

.cidr-page-container .card-header h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
    font-size: 1.2rem;
}

.cidr-page-container .card-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
}

/* ── Info tooltip (reuse pswd pattern) ──── */

.cidr-page-container .info-icon-wrapper {
    position: relative;
    display: inline-flex;
    margin-left: auto;
}

.cidr-page-container .info-icon {
    color: var(--text-color-muted);
    cursor: pointer;
    font-size: 1.05rem;
    transition:
        color 0.3s ease,
        transform 0.3s ease;
}

.cidr-page-container .info-icon-wrapper:hover .info-icon {
    color: var(--accent-color);
    transform: translateY(-1px);
}

.cidr-page-container .tooltip {
    position: absolute;
    bottom: 125%;
    left: 50%;
    z-index: 10;
    display: none;
    width: 280px;
    padding: 1rem;
    color: var(--text-color);
    background: var(--surface-2);
    border-radius: var(--radius-1);
    font-size: 0.86rem;
    line-height: 1.45;
    text-align: center;
    transform: translateX(-50%);
}

.cidr-page-container .info-icon-wrapper:hover .tooltip {
    display: block;
    animation: cidrPop 0.25s ease-out;
}

.cidr-page-container .tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-color: var(--surface-2) transparent transparent transparent;
    border-style: solid;
    border-width: 5px;
}

/* ── Input field ─────────────────────────── */

.cidr-input-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.cidr-field-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.cidr-label {
    color: var(--text-color-muted);
    font-size: 0.88rem;
}

.cidr-text-input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    font-family: "IBM Plex Mono", monospace;
    font-size: 1.05rem;
    font-weight: 700;
    background: var(--surface-0);
    border: 1px solid var(--surface-2);
    border-radius: var(--radius-1);
    outline: none;
    transition:
        background 0.3s ease,
        border-color 0.3s ease;
}

.cidr-text-input::placeholder {
    color: var(--text-color-muted);
    font-weight: 400;
}

.cidr-text-input:focus {
    border-color: var(--accent-color-translucent);
    background: var(--surface-1);
}

.cidr-text-input.error {
    border-color: #ff5f57;
}

/* ── Prefix slider ───────────────────────── */

.cidr-prefix-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cidr-prefix-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cidr-prefix-header .label {
    color: var(--text-color-muted);
    font-size: 0.88rem;
}

.cidr-prefix-value {
    min-width: 4ch;
    margin-left: auto;
    color: var(--accent-color);
    font-family: "IBM Plex Mono", monospace;
    font-size: 1.45rem;
    font-weight: 700;
    line-height: 1;
    text-align: right;
}

.cidr-prefix-value.bump {
    animation: cidrPop 0.22s ease-out;
}

.cidr-slider-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.cidr-slider {
    width: 100%;
    height: 8px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background: var(--surface-2);
    border-radius: var(--radius-abs);
    outline: none;
    transition:
        background 0.3s ease,
        height 0.3s ease;
}

.cidr-slider:hover {
    height: 10px;
    background: var(--accent-color-translucent);
}

.cidr-slider::-webkit-slider-thumb {
    width: 24px;
    height: 24px;
    cursor: grab;
    appearance: none;
    -webkit-appearance: none;
    background: var(--accent-color);
    border: 3px solid var(--bg-color);
    border-radius: 50%;
    transition:
        border-color 0.3s ease,
        transform 0.3s ease;
}

.cidr-slider::-webkit-slider-thumb:hover {
    border-color: var(--surface-2);
    transform: scale(1.08);
}

.cidr-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    cursor: grab;
    background: var(--accent-color);
    border: 3px solid var(--bg-color);
    border-radius: 50%;
}

.cidr-slider:focus-visible::-webkit-slider-thumb {
    border-color: var(--surface-2);
}

.cidr-slider-ticks {
    display: flex;
    justify-content: space-between;
    padding: 0 0.25rem;
    color: var(--text-color-muted);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.7rem;
}

/* ── IPv6 toggle ─────────────────────────── */

.cidr-version-toggle {
    display: flex;
}

.cidr-toggle {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    min-width: 0;
    cursor: pointer;
    color: var(--text-color);
    font-size: 0.82rem;
    user-select: none;
}

.cidr-toggle input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.cidr-toggle-track {
    position: relative;
    width: 38px;
    height: 22px;
    flex: 0 0 auto;
    background: var(--surface-2);
    border: 1px solid var(--surface-2);
    border-radius: var(--radius-abs);
    transition:
        background 0.3s ease,
        border-color 0.3s ease;
}

.cidr-toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 14px;
    height: 14px;
    background: var(--text-color-muted);
    border-radius: 50%;
    transition:
        background 0.3s ease,
        transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cidr-toggle input:checked + .cidr-toggle-track {
    background: var(--accent-color-translucent);
    border-color: var(--accent-color-translucent);
}

.cidr-toggle input:checked + .cidr-toggle-track .cidr-toggle-thumb {
    background: var(--accent-color);
    transform: translateX(16px);
}

.cidr-toggle:has(input:focus-visible) .cidr-toggle-track {
    outline: 2px solid var(--accent-color-translucent);
    outline-offset: 2px;
}

.cidr-toggle-text {
    min-width: 0;
    color: var(--text-color-muted);
    font-family: "IBM Plex Mono", monospace;
    font-weight: 700;
}

/* ── Calculate button ────────────────────── */

.cidr-actions-row {
    display: flex;
    gap: 0.75rem;
}

.cidr-calc-btn {
    display: inline-flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.75rem 1.5rem;
    color: var(--bg-color);
    background: var(--accent-color);
    border: none;
    border-radius: var(--radius-abs);
    cursor: pointer;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.95rem;
    font-weight: 700;
    transition:
        opacity 0.3s ease,
        transform 0.3s ease;
}

.cidr-calc-btn:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-2px);
}

.cidr-calc-btn:active:not(:disabled) {
    transform: translateY(0);
}

.cidr-calc-btn:focus-visible {
    outline: 2px solid var(--accent-color-translucent);
    outline-offset: 2px;
}

.cidr-calc-btn .btn-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.cidr-calc-btn .btn-spinner {
    display: none;
}

.cidr-calc-btn.loading .btn-text {
    display: none;
}

.cidr-calc-btn.loading .btn-spinner {
    display: inline-flex;
}

.cidr-calc-btn.shake {
    animation: cidrShake 0.4s ease;
}

/* ── Result area ─────────────────────────── */

.cidr-output-area {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    padding: 1.5rem;
    overflow: hidden;
    background: var(--surface-0);
    border: 2px dashed var(--surface-2);
    border-radius: var(--radius-1);
    transition:
        background 0.3s ease,
        border-color 0.3s ease;
}

.cidr-output-area.has-results {
    border-style: solid;
    border-color: var(--accent-color-translucent);
}

.cidr-empty-state {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color-muted);
    text-align: center;
}

.cidr-empty-icon {
    color: var(--text-color-muted);
    font-size: 3rem;
    opacity: 0.35;
    animation: cidrFloat 4s ease-in-out infinite;
}

.cidr-empty-state span {
    font-size: 0.9rem;
}

.cidr-empty-state.hidden {
    display: none;
}

.cidr-results {
    display: none;
    width: 100%;
}

.cidr-results.visible {
    display: block;
    animation: cidrPop 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Result grid ─────────────────────────── */

.cidr-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.cidr-result-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--surface-1);
    border: 1px solid var(--surface-2);
    border-radius: var(--radius-1);
    cursor: pointer;
    transition:
        background 0.3s ease,
        border-color 0.3s ease,
        transform 0.3s ease;
}

.cidr-result-item:hover {
    background: var(--surface-2);
    border-color: var(--accent-color-translucent);
    transform: translateY(-2px);
}

.cidr-result-item:active {
    transform: translateY(0);
}

.cidr-result-item.full-width {
    grid-column: 1 / -1;
}

.cidr-result-label {
    color: var(--text-color-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.cidr-result-value {
    color: var(--text-color);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.92rem;
    font-weight: 700;
    word-break: break-all;
}

.cidr-result-value .highlight {
    color: var(--accent-color);
}

/* ── Reference table ─────────────────────── */

.cidr-table-card {
    display: none;
}

.cidr-table-card.visible {
    display: flex;
}

.cidr-ref-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.cidr-ref-table {
    width: 100%;
    border-collapse: collapse;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.82rem;
}

.cidr-ref-table th {
    padding: 0.6rem 0.75rem;
    color: var(--text-color-muted);
    font-size: 0.72rem;
    font-weight: 700;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--surface-2);
}

.cidr-ref-table td {
    padding: 0.5rem 0.75rem;
    color: var(--text-color);
    border-bottom: 1px solid var(--surface-2);
    transition: background 0.2s ease;
}

.cidr-ref-table tr:last-child td {
    border-bottom: none;
}

.cidr-ref-table tbody tr:hover td {
    background: var(--surface-1);
}

.cidr-ref-table tbody tr.active td {
    background: var(--accent-color-translucent);
    color: var(--accent-color);
    font-weight: 700;
}

/* ── Toast ────────────────────────────────── */

.cidr-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    max-width: calc(100vw - 2rem);
    padding: 0.7rem 1.35rem;
    color: var(--text-color);
    background: var(--terminal-bg);
    border: 1px solid var(--surface-2);
    border-radius: var(--radius-abs);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.88rem;
    pointer-events: none;
    transform: translateX(-50%) translateY(100px);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
}

.cidr-toast.visible {
    transform: translateX(-50%) translateY(0);
}

.cidr-toast i {
    color: #27c93f;
}

/* ── IP-in-range checker ─────────────────── */

.cidr-check-row {
    display: flex;
    gap: 0.75rem;
}

.cidr-check-row .cidr-field-group {
    flex: 1;
}

.cidr-check-result {
    display: none;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-1);
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.88rem;
    font-weight: 600;
    animation: cidrPop 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cidr-check-result.visible {
    display: flex;
}

.cidr-check-result.match {
    color: #27c93f;
    background: rgba(39, 201, 63, 0.1);
    border: 1px solid rgba(39, 201, 63, 0.25);
}

.cidr-check-result.match i {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.cidr-check-result.no-match {
    color: #ff5f57;
    background: rgba(255, 95, 87, 0.1);
    border: 1px solid rgba(255, 95, 87, 0.25);
}

.cidr-check-result.no-match i {
    font-size: 1.15rem;
    flex-shrink: 0;
}

/* ── Responsive ──────────────────────────── */

@media (max-width: 560px) {
    .cidr-page-container {
        gap: 1rem;
        margin: 1rem auto;
        padding: 1rem;
    }

    .cidr-page-container .card-header,
    .cidr-page-container .card-content {
        padding: 1rem;
    }

    .cidr-page-container .card-header h2 {
        font-size: 1.05rem;
    }

    .cidr-result-grid {
        grid-template-columns: 1fr;
    }

    .cidr-output-area {
        min-height: 150px;
        padding: 1rem;
    }

    .cidr-page-container .tooltip {
        left: auto;
        right: -0.25rem;
        width: min(260px, calc(100vw - 3rem));
        transform: none;
    }

    .cidr-page-container .tooltip::after {
        left: auto;
        right: 1rem;
    }

    .cidr-ref-table {
        font-size: 0.75rem;
    }

    .cidr-ref-table th,
    .cidr-ref-table td {
        padding: 0.4rem 0.5rem;
    }

    .cidr-check-row {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}