*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --green: #00ff41;
    --green-dim: rgba(0, 255, 65, 0.12);
    --green-mid: rgba(0, 255, 65, 0.4);
    --green-glow: rgba(0, 255, 65, 0.08);
    --bg: #060a06;
    --bg2: #0b120b;
    --bg3: #0f180f;
    --border: rgba(0, 255, 65, 0.18);
    --text: #c8e6c8;
    --text-dim: rgba(200, 230, 200, 0.45);
    --mono: 'Share Tech Mono', monospace;
    --sans: 'Barlow', sans-serif;
    --radius: 4px;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgba(0, 255, 65, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 255, 65, 0.025) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 0, 0, 0.06) 2px, rgba(0, 0, 0, 0.06) 4px);
    pointer-events: none;
    z-index: 0;
}

header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.9rem 2rem;
    border-bottom: 1px solid var(--border);
    background: rgba(6, 10, 6, 0.92);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--mono);
    font-size: 1rem;
    color: var(--green);
    text-shadow: 0 0 20px var(--green-mid);
    letter-spacing: 0.05em;
}

.logo span {
    color: var(--text);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.badge {
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    color: var(--green);
    border: 1px solid var(--border);
    padding: 0.3rem 0.8rem;
    background: var(--green-glow);
}

.hint {
    font-family: var(--mono);
    font-size: 0.6rem;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

main {
    flex: 1;
    display: grid;
    grid-template-columns: 400px 1fr;
    height: calc(100vh - 53px);
    position: relative;
    z-index: 1;
}

.sidebar {
    border-right: 1px solid var(--border);
    background: var(--bg2);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-top {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.terminal-label {
    font-family: var(--mono);
    font-size: 0.6rem;
    color: var(--green);
    letter-spacing: 0.15em;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-label::before {
    content: '>';
    color: var(--green);
    animation: blink 1.2s step-end infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1
    }

    50% {
        opacity: 0
    }
}

.sidebar-top h1 {
    font-family: var(--sans);
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text);
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.sidebar-top h1 em {
    font-style: normal;
    color: var(--green);
    text-shadow: 0 0 15px var(--green-mid);
}

.sidebar-top p {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    line-height: 1.5;
}

.form-section {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    flex: 1;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

label {
    font-family: var(--mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    color: var(--green);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

label .req {
    color: #ff4444;
}

label .opt {
    color: var(--text-dim);
    font-size: 0.55rem;
}

textarea,
input,
select {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--mono);
    font-size: 0.82rem;
    padding: 0.75rem 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
    letter-spacing: 0.02em;
}

textarea:focus,
input:focus,
select:focus {
    border-color: var(--green-mid);
    box-shadow: 0 0 15px var(--green-glow);
}

textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.5;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-dim);
}

select option {
    background: #0b120b;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}

.key-wrap {
    position: relative;
}

.key-wrap input {
    padding-right: 2.5rem;
}

.toggle-key {
    position: absolute;
    right: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0;
}

.toggle-key:hover {
    color: var(--green);
}

.free-counter {
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--text-dim);
    padding: 0.5rem 0.8rem;
    background: var(--green-glow);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    letter-spacing: 0.05em;
}

.free-counter span {
    color: var(--green);
    font-weight: 700;
}

.free-counter.warn {
    border-color: rgba(255, 180, 0, 0.3);
    color: #ffb400;
    background: rgba(255, 180, 0, 0.04);
}

.free-counter.warn span {
    color: #ffb400;
}

.status {
    font-family: var(--mono);
    font-size: 0.72rem;
    padding: 0.7rem 1rem;
    border-radius: var(--radius);
    display: none;
    align-items: center;
    gap: 0.6rem;
    letter-spacing: 0.03em;
}

.status.loading {
    display: flex;
    background: rgba(0, 255, 65, 0.04);
    border: 1px solid var(--border);
    color: var(--green);
}

.status.success {
    display: flex;
    background: rgba(0, 255, 65, 0.06);
    border: 1px solid var(--green-mid);
    color: var(--green);
    text-shadow: 0 0 10px var(--green-mid);
}

.status.error {
    display: flex;
    background: rgba(255, 50, 50, 0.06);
    border: 1px solid rgba(255, 50, 50, 0.3);
    color: #ff6666;
}

.spinner {
    width: 12px;
    height: 12px;
    border: 2px solid var(--border);
    border-top-color: var(--green);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.generate-btn {
    width: 100%;
    padding: 0.9rem;
    background: var(--green);
    color: var(--bg);
    border: none;
    border-radius: var(--radius);
    font-family: var(--mono);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.2);
}

.generate-btn:hover {
    background: #1aff55;
    box-shadow: 0 0 35px rgba(0, 255, 65, 0.4);
    transform: translateY(-1px);
}

.generate-btn:active {
    transform: translateY(0);
}

.generate-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.divider {
    height: 1px;
    background: var(--border);
}

.meta {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
}

.meta.visible {
    display: flex;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-family: var(--mono);
    font-size: 0.68rem;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(0, 255, 65, 0.06);
}

.meta-row span:first-child {
    color: var(--text-dim);
}

.meta-row span:last-child {
    color: var(--green);
}

.footer-note {
    font-family: var(--mono);
    font-size: 0.6rem;
    color: var(--text-dim);
    text-align: center;
    letter-spacing: 0.05em;
}

.footer-note span {
    color: var(--green);
    cursor: pointer;
}

/* ── PREVIEW ── */
.preview {
    display: flex;
    flex-direction: column;
    background: var(--bg);
    position: relative;
}

.preview-header {
    padding: 0.8rem 1.5rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 0.8rem;
}

.preview-label {
    font-family: var(--mono);
    font-size: 0.6rem;
    color: var(--green);
    letter-spacing: 0.15em;
    white-space: nowrap;
}

.url-bar {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.35rem 0.8rem;
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--text-dim);
    max-width: 400px;
    overflow: hidden;
}

.url-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 8px var(--green-mid);
    flex-shrink: 0;
}

#urlText {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── VIEWPORT TOGGLE ── */
.viewport-toggle {
    display: flex;
    gap: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2px;
    background: var(--bg3);
    flex-shrink: 0;
}

.vp-btn {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.7rem;
    background: none;
    border: none;
    border-radius: 2px;
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.vp-btn:hover {
    color: var(--green);
}

.vp-btn.active {
    background: var(--green-dim);
    color: var(--green);
    text-shadow: 0 0 8px var(--green-mid);
}

.vp-btn svg {
    flex-shrink: 0;
}

.preview-status {
    font-family: var(--mono);
    font-size: 0.6rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    white-space: nowrap;
}

.preview-body {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #111;
}

.empty-state {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
}

.empty-icon {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    text-align: center;
    line-height: 2;
}

.empty-icon .big {
    font-size: 2.5rem;
    color: var(--border);
    display: block;
    margin-bottom: 0.5rem;
}

.loading-overlay {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(6, 10, 6, 0.92);
    backdrop-filter: blur(8px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    z-index: 10;
}

.loading-overlay.visible {
    display: flex;
}

.loading-ring {
    width: 48px;
    height: 48px;
    border: 2px solid var(--border);
    border-top-color: var(--green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 20px var(--green-dim);
}

.loading-msg {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--green);
    letter-spacing: 0.08em;
    text-align: center;
    animation: fadepulse 2s ease-in-out infinite;
}

@keyframes fadepulse {

    0%,
    100% {
        opacity: 0.5
    }

    50% {
        opacity: 1
    }
}

.loading-pct {
    font-family: var(--mono);
    font-size: 2rem;
    color: var(--green);
    text-shadow: 0 0 20px var(--green-mid);
    font-weight: 700;
}

/* ── IFRAME — modo desktop y mobile ── */
#previewFrame {
    border: none;
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    transform-origin: 0 0;
    background: #ffffff;
}

#previewFrame.visible {
    display: block;
}

/* Mobile frame: centrado con sombra de teléfono */
#previewFrame.mobile-mode {
    top: 50%;
    left: 50%;
    transform-origin: center center;
    border-radius: 28px;
    box-shadow:
        0 0 0 8px #1a1a1a,
        0 0 0 10px #2a2a2a,
        0 0 40px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
        height: auto;
        min-height: calc(100vh - 53px);
    }

    .sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border);
        height: auto;
    }

    .preview {
        height: 600px;
    }

    .hint {
        display: none;
    }

    .vp-btn span {
        display: none;
    }
}

/* ── VIEWPORT TOGGLE ── */
.viewport-toggle {
    display: flex;
    gap: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2px;
    background: var(--bg3);
    flex-shrink: 0;
}

.vp-btn {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.7rem;
    background: none;
    border: none;
    border-radius: 2px;
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.vp-btn:hover {
    color: var(--green);
}

.vp-btn.active {
    background: var(--green-dim);
    color: var(--green);
    text-shadow: 0 0 8px var(--green-mid);
}

.vp-btn svg {
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .vp-btn span {
        display: none;
    }
}

.lang-selector {
    display: flex;
    gap: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2px;
    background: var(--bg3);
}

.lang-btn {
    background: none;
    border: none;
    border-radius: 2px;
    color: var(--text-dim);
    font-family: var(--mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: all 0.15s;
}

.lang-btn:hover {
    color: var(--green);
}

.lang-btn.active {
    background: var(--green-dim);
    color: var(--green);
    text-shadow: 0 0 8px var(--green-mid);
}