/* Signal Tower */

.sc-tower-main {
    max-width: min(96vw, 860px);
    margin: 0 auto;
}

.sc-tower-panel {
    position: relative;
    overflow: hidden;
}

.sc-tower-hero-lead {
    color: rgba(226, 232, 240, 0.92);
    line-height: 1.65;
    margin: 0.75rem 0 0;
    font-size: 0.95rem;
}

/* ── Step indicator ────────────────────────────────────────── */

.sc-tower-step-indicator {
    display: flex;
    gap: 0.55rem;
    justify-content: center;
    margin: 0.2rem 0 1.2rem;
}

.sc-tower-step-dot {
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.15);
    transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.sc-tower-step-dot.active {
    background: rgba(232, 201, 135, 0.9);
    transform: scale(1.2);
    box-shadow: 0 0 6px rgba(232, 201, 135, 0.55);
}

.sc-tower-stage[hidden] {
    display: none !important;
}

/* ── Stage transitions ────────────────────────────────────── */

.sc-tower-stage {
    animation: stStageIn 0.35s ease-out both;
}

.sc-tower-stage.st-entering {
    opacity: 0;
    transform: translateY(8px);
}

@keyframes stStageIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Fade-in utility ──────────────────────────────────────── */

.st-fade-in {
    animation: stFadeIn 0.45s ease-out both;
}

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

/* ── Console layout ────────────────────────────────────────── */

.sc-tower-console {
    display: grid;
    grid-template-columns: minmax(200px, 240px) minmax(220px, 1fr);
    gap: 1rem;
    align-items: end;
}

.sc-tower-status-panel {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.55rem;
    padding: 0.85rem;
    background: rgba(0, 0, 0, 0.22);
}

.sc-tower-status-row {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sc-tower-status-row:last-child {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

.sc-tower-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(248, 231, 185, 0.72);
}

.sc-tower-value {
    font-family: 'Share Tech Mono', monospace;
    color: #e8c987;
    font-size: 1rem;
    letter-spacing: 0.04em;
}

.sc-tower-value.is-dim {
    color: rgba(255, 255, 255, 0.45);
}

/* ── Tower scene ───────────────────────────────────────────── */

.sc-tower-scene-wrap {
    position: relative;
    min-height: 238px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.65rem;
    background:
        radial-gradient(ellipse at center 85%, rgba(232, 201, 135, 0.06) 0%, transparent 55%),
        linear-gradient(to top, rgba(20, 26, 38, 0.6) 0%, transparent 30%),
        radial-gradient(circle at center bottom, rgba(24, 30, 44, 0.9), rgba(7, 9, 15, 0.96));
    overflow: hidden;
}

.sc-tower-svg {
    width: 100%;
    height: 238px;
}

.sc-tower-light {
    fill: rgba(255, 255, 255, 0.2);
    stroke: rgba(255, 255, 255, 0.35);
    stroke-width: 1;
    transition: fill 0.15s ease;
    animation: stLightPulse 3.5s ease-in-out infinite;
}

.sc-tower-arcs path {
    fill: none;
    stroke: rgba(232, 201, 135, 0.75);
    stroke-width: 1.3;
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
    transform-origin: center;
}

.sc-tower-beam {
    position: absolute;
    left: 50%;
    top: 14px;
    width: 118px;
    height: 164px;
    transform: translateX(-50%);
    clip-path: polygon(40% 0%, 60% 0%, 100% 100%, 0% 100%);
    background: radial-gradient(ellipse at top, rgba(232, 201, 135, 0.35) 0%, rgba(232, 201, 135, 0.05) 68%, transparent 88%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sc-tower-glow {
    position: absolute;
    width: 94px;
    height: 28px;
    border-radius: 999px;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(232, 201, 135, 0.35), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sc-tower-scan-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    top: -5%;
    background: linear-gradient(90deg, transparent, rgba(232, 201, 135, 0.5), transparent);
    opacity: 0;
}

/* ── Tower transmitting state ──────────────────────────────── */

.sc-tower-panel.is-transmitting .sc-tower-light {
    fill: #f97316;
    animation: stLightFlash 0.25s ease-out 1, stLightPulse 3.5s ease-in-out 0.25s infinite;
}

.sc-tower-panel.is-transmitting .sc-tower-beam,
.sc-tower-panel.is-transmitting .sc-tower-glow {
    opacity: 1;
}

.sc-tower-panel.is-transmitting .sc-tower-arc-inner {
    opacity: 1;
    animation: stArcPulse 1.8s ease-in-out infinite;
    transition-delay: 0.3s;
}

.sc-tower-panel.is-transmitting .sc-tower-arc-outer {
    opacity: 0.65;
    animation: stArcPulse 1.8s ease-in-out 0.35s infinite;
    transition-delay: 0.6s;
}

.sc-tower-panel.is-transmitting .sc-tower-scan-line {
    opacity: 1;
    animation: stScan 0.9s linear 3;
}

.sc-tower-morse {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.4rem;
    text-align: center;
    min-height: 1.1rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    color: rgba(232, 201, 135, 0.8);
}

/* ── Status acknowledgment ────────────────────────────────── */

.sc-tower-status-ack {
    margin: 0.6rem 0 0;
    padding: 0.5rem 0.75rem;
    border-radius: 0.45rem;
    border-left: 3px solid rgba(232, 201, 135, 0.65);
    background: rgba(232, 201, 135, 0.06);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    color: rgba(232, 201, 135, 0.85);
    animation: stFadeIn 0.4s ease-out both;
}

.sc-tower-status-ack[hidden] {
    display: none;
}

/* ── Launch actions ────────────────────────────────────────── */

.sc-tower-launch-actions {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.sc-tower-launch-btn {
    width: 100%;
    font-family: 'Share Tech Mono', monospace;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    border-width: 1.5px;
}

.sc-tower-ghost-btn {
    width: 100%;
}

/* ── Protocol selection ────────────────────────────────────── */

.sc-tower-stage-kicker {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(248, 231, 185, 0.7);
    margin: 0 0 0.8rem;
}

.sc-tower-choices {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.sc-tower-choice-btn {
    width: 100%;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.55rem;
    background: rgba(0, 0, 0, 0.2);
    color: #e0e0e0;
    padding: 0.85rem 1rem;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.sc-tower-choice-btn:hover,
.sc-tower-choice-btn:focus-visible {
    border-color: rgba(232, 201, 135, 0.55);
    background: rgba(232, 201, 135, 0.08);
    outline: none;
}

.sc-tower-choice-name {
    display: block;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.88rem;
    letter-spacing: 0.06em;
    color: #e8c987;
}

.sc-tower-choice-desc {
    display: block;
    margin-top: 0.15rem;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.68);
}

/* ── Stage 1 footer ───────────────────────────────────────── */

.sc-tower-stage1-footer {
    margin-top: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    align-items: center;
}

.sc-tower-back-link {
    background: none;
    border: none;
    padding: 0.3rem 0;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: color 0.2s ease;
}

.sc-tower-back-link:hover,
.sc-tower-back-link:focus-visible {
    color: rgba(232, 201, 135, 0.8);
    outline: none;
}

/* ── Protocol shell ────────────────────────────────────────── */

.sc-tower-protocol-shell {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0.6rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 1rem;
}

.sc-tower-protocol-header {
    margin-bottom: 0.8rem;
}

.sc-tower-protocol-title {
    margin: 0.15rem 0 0;
    font-family: Cinzel, "Noto Serif JP", Georgia, serif;
    font-size: 1.05rem;
    color: #e0e0e0;
}

.sc-tower-progress-track {
    height: 3px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
    margin: 0.5rem 0;
}

.sc-tower-progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, rgba(232, 201, 135, 0.9), #f97316);
    transition: width 0.1s linear;
}

/* ── Box breathing ─────────────────────────────────────────── */

.sc-tower-box-wrap {
    display: flex;
    justify-content: center;
}

.sc-tower-box-svg {
    width: 166px;
    height: 166px;
}

.sc-tower-box-track {
    fill: none;
    stroke: rgba(255, 255, 255, 0.12);
    stroke-width: 2;
}

.sc-tower-box-path {
    fill: none;
    stroke: rgba(232, 201, 135, 0.92);
    stroke-width: 2;
    stroke-linecap: round;
}

#stBoxDot {
    fill: #f97316;
}

.sc-tower-box-phase {
    text-align: center;
    margin-top: 0.5rem;
    font-family: 'Share Tech Mono', monospace;
    letter-spacing: 0.08em;
    color: #e8c987;
}

.sc-tower-box-count {
    text-align: center;
    font-family: Cinzel, "Noto Serif JP", Georgia, serif;
    font-size: 2.35rem;
    color: #e0e0e0;
    line-height: 1;
    min-height: 2.4rem;
}

.sc-tower-cycle-info {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.58);
    margin-bottom: 0.7rem;
}

/* ── Perimeter scan ────────────────────────────────────────── */

.sc-tower-scan-steps {
    list-style: none;
    padding: 0;
    margin: 0 0 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.sc-tower-scan-helper {
    margin: 0 0 0.7rem;
    font-size: 0.82rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.75);
}

.sc-tower-scan-step {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.07);
    background: rgba(0, 0, 0, 0.22);
    opacity: 0.35;
    transform: translateX(0);
    transition: opacity 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.sc-tower-scan-step.is-active {
    opacity: 1;
    border-color: rgba(232, 201, 135, 0.5);
    background: rgba(232, 201, 135, 0.1);
    transform: translateX(4px);
}

.sc-tower-scan-step.is-done {
    opacity: 0.55;
    border-color: rgba(249, 115, 22, 0.35);
}

.sc-tower-scan-num {
    font-family: 'Share Tech Mono', monospace;
    color: #e8c987;
    min-width: 1.2rem;
}

/* ── Armor check ───────────────────────────────────────────── */

.sc-tower-armor-helper {
    margin: 0 0 0.6rem;
    font-size: 0.82rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.65);
}

.sc-tower-armor-zones {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.sc-tower-armor-zone {
    padding: 0.6rem 0.7rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(0, 0, 0, 0.22);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
    cursor: default;
    transition: border-color 0.25s ease, background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.sc-tower-armor-zone.is-active {
    border-color: rgba(249, 115, 22, 0.7);
    color: #f97316;
    transform: translateY(-2px);
    background: rgba(249, 115, 22, 0.1);
    cursor: pointer;
}

.sc-tower-armor-zone.is-done {
    border-color: rgba(232, 201, 135, 0.65);
    color: #e8c987;
    background: rgba(232, 201, 135, 0.08);
    text-decoration: line-through;
}

/* ── Transmission ──────────────────────────────────────────── */

.sc-tower-transmission {
    margin-top: 1rem;
    border-left: 3px solid rgba(232, 201, 135, 0.85);
    padding: 0.6rem 0 0.6rem 0.95rem;
    background: rgba(232, 201, 135, 0.05);
    border-radius: 0 0.5rem 0.5rem 0;
}

.sc-tower-quote {
    margin: 0.65rem 0 0;
    font-family: Cinzel, "Noto Serif JP", Georgia, serif;
    font-size: 1rem;
    line-height: 1.6;
    color: #e0e0e0;
    font-style: italic;
}

#stResetBtn {
    margin-top: 0.9rem;
    width: 100%;
}

#stResetBtn[hidden] {
    display: none;
}

/* ── Keyframes ─────────────────────────────────────────────── */

@keyframes stScan {
    0% { top: -5%; }
    100% { top: 100%; }
}

@keyframes stLightPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

@keyframes stLightFlash {
    0% { fill: #ffffff; }
    60% { fill: #fbbf24; }
    100% { fill: #f97316; }
}

@keyframes stArcPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.06); opacity: 1; }
}

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

@media (max-width: 780px) {
    .sc-tower-console {
        grid-template-columns: 1fr;
    }

    .sc-tower-status-panel {
        order: 2;
    }
}

@media (max-width: 520px) {
    .sc-tower-armor-zones {
        grid-template-columns: 1fr;
    }
}

/* ── Reduced motion ────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .sc-tower-step-dot,
    .sc-tower-choice-btn,
    .sc-tower-scan-step,
    .sc-tower-armor-zone,
    .sc-tower-value,
    .sc-tower-light,
    .sc-tower-beam,
    .sc-tower-glow,
    .sc-tower-scan-line,
    .sc-tower-arcs path,
    .sc-tower-stage,
    .st-fade-in,
    .sc-tower-status-ack {
        transition: none !important;
        animation: none !important;
    }

    .sc-tower-panel.is-transmitting .sc-tower-light {
        fill: #f97316;
        animation: none !important;
    }

    .sc-tower-panel.is-transmitting .sc-tower-scan-line {
        opacity: 1;
        top: 55%;
        animation: none !important;
    }

    .sc-tower-panel.is-transmitting .sc-tower-arc-inner,
    .sc-tower-panel.is-transmitting .sc-tower-arc-outer {
        opacity: 1;
        animation: none !important;
    }
}