/* =========================================================
   About page — vintage radio stage
   ========================================================= */

.about-page {
    padding-bottom: 40px;
    background-image: none;
    background-color: #120e0a;
    overflow-x: hidden;
}

.about-page::before {
    background:
        radial-gradient(90% 50% at 20% 10%, var(--dial-glow, rgba(255, 176, 32, 0.18)) 0%, transparent 55%),
        radial-gradient(70% 40% at 85% 80%, rgba(41, 229, 198, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, #1a1410 0%, #0c0a08 45%, #080705 100%);
    transition: background 0.35s ease;
}

.about-ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.about-wave {
    position: absolute;
    left: 50%;
    top: 42%;
    width: 120px;
    height: 120px;
    margin: -60px 0 0 -60px;
    border: 1px solid rgba(255, 176, 32, 0.22);
    border-radius: 50%;
    animation: aboutRipple 5.5s ease-out infinite;
}

.about-wave-2 {
    animation-delay: 1.8s;
    border-color: rgba(41, 229, 198, 0.16);
}

.about-wave-3 {
    animation-delay: 3.6s;
    border-color: rgba(255, 176, 32, 0.12);
}

@keyframes aboutRipple {
    0% { transform: scale(0.35); opacity: 0.7; }
    100% { transform: scale(6.5); opacity: 0; }
}

.about-main {
    width: min(1100px, calc(100% - 32px));
    margin: 0 auto;
    padding: 40px 0 60px;
}

.about-hero {
    text-align: center;
    margin-bottom: 48px;
    animation: aboutFadeUp 0.9s ease both;
}

.about-kicker {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--signal);
    margin: 0 0 12px;
}

.about-hero h1 {
    font-size: clamp(2.6rem, 8vw, 4.8rem);
    margin: 0 0 14px;
    color: var(--paper);
    text-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.about-lead {
    max-width: 520px;
    margin: 0 auto;
    color: var(--mist);
    font-size: 1.1rem;
    line-height: 1.55;
}

.about-showcase {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 40px;
    align-items: center;
}

/* ----- Vintage radio ----- */
.vintage-radio {
    position: relative;
    width: min(100%, 420px);
    margin: 0 auto;
    animation: aboutFloat 5.5s ease-in-out infinite, aboutFadeUp 1s ease 0.15s both;
}

.vr-antenna {
    width: 4px;
    height: 56px;
    margin: 0 auto 6px;
    background: linear-gradient(180deg, #d8c4a0, #6b5a42);
    border-radius: 3px;
    position: relative;
}

.vr-antenna::after {
    content: "";
    position: absolute;
    top: -8px;
    left: 50%;
    width: 12px;
    height: 12px;
    margin-left: -6px;
    border-radius: 50%;
    background: #ffb020;
    box-shadow: 0 0 16px rgba(255, 176, 32, 0.85);
    animation: aboutAntennaGlow 2.2s ease-in-out infinite;
}

.vr-body {
    display: grid;
    grid-template-columns: 0.9fr 1.15fr;
    gap: 14px;
    padding: 22px;
    border-radius: 22px 22px 18px 18px;
    background:
        linear-gradient(145deg, #5a3d2a 0%, #3a2418 40%, #24160f 100%);
    border: 1px solid rgba(255, 210, 150, 0.22);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.12),
        0 28px 50px rgba(0, 0, 0, 0.55);
}

.vr-grille {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 5px;
    padding: 14px;
    border-radius: 14px;
    background: #1a110c;
    border: 1px solid rgba(0, 0, 0, 0.35);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.55);
}

.vr-grille span {
    height: 100%;
    min-height: 120px;
    border-radius: 999px;
    background: linear-gradient(90deg, #2a1c14, #0e0a08 45%, #2a1c14);
    opacity: 0.85;
}

.vr-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vr-dial {
    position: relative;
    height: 78px;
    border-radius: 12px;
    background: linear-gradient(180deg, #1b2a24, #0d1512);
    border: 1px solid rgba(41, 229, 198, 0.25);
    overflow: hidden;
    box-shadow: inset 0 0 24px rgba(41, 229, 198, 0.12);
}

.vr-scale {
    position: absolute;
    inset: 10px 12px auto;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 10px;
    color: rgba(41, 229, 198, 0.75);
}

.vr-needle {
    position: absolute;
    top: 28px;
    bottom: 12px;
    left: var(--needle, 35%);
    width: 2px;
    background: #ffb020;
    box-shadow: 0 0 10px rgba(255, 176, 32, 0.9);
    transition: left 0.12s linear;
}

.vr-glow {
    position: absolute;
    inset: auto 0 0;
    height: 40%;
    background: linear-gradient(180deg, transparent, rgba(41, 229, 198, 0.12));
    animation: aboutDialPulse 2.8s ease-in-out infinite;
}

.vr-meters {
    display: flex;
    gap: 8px;
    height: 28px;
    align-items: flex-end;
}

.vr-meter {
    flex: 1;
    height: 100%;
    border-radius: 4px;
    background: #120c09;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
    position: relative;
}

.vr-meter i {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 40%;
    background: linear-gradient(180deg, #29e5c6, #ffb020);
    transition: height 0.08s linear;
}

.vr-hint {
    text-align: center;
    margin: 0 0 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: rgba(255, 210, 150, 0.55);
}

.vr-freq-readout {
    display: flex;
    align-items: baseline;
    justify-content: flex-end;
    gap: 6px;
    font-family: var(--font-mono);
    color: var(--freq, #29e5c6);
    text-shadow: 0 0 12px rgba(41, 229, 198, 0.35);
}

.vr-freq-label,
.vr-freq-unit {
    font-size: 10px;
    opacity: 0.7;
}

.vr-freq-value {
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    min-width: 3.2em;
    text-align: right;
}

.vr-station-hint {
    text-align: center;
    margin: 12px 0 0;
    min-height: 1.3em;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    color: rgba(255, 176, 32, 0.8);
    transition: color 0.25s ease, opacity 0.25s ease;
}

.vr-knobs {
    display: flex;
    gap: 14px;
    justify-content: flex-end;
}

.vr-knob {
    -webkit-appearance: none;
    appearance: none;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    padding: 0;
    cursor: grab;
    touch-action: none;
    background:
        radial-gradient(circle at 35% 30%, #8a7a68, #2c241c 60%, #14100c);
    border: 2px solid rgba(255, 220, 170, 0.25);
    box-shadow: inset 0 -2px 4px rgba(0, 0, 0, 0.5);
    transform: rotate(var(--rot, 0deg));
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.vr-knob:active,
.vr-knob.is-dragging {
    cursor: grabbing;
    border-color: rgba(255, 176, 32, 0.7);
    box-shadow:
        inset 0 -2px 4px rgba(0, 0, 0, 0.5),
        0 0 18px rgba(255, 176, 32, 0.35);
}

.vr-knob-gold {
    background:
        radial-gradient(circle at 35% 30%, #ffd48a, #b07830 55%, #5a3a12 70%);
}

.vr-knob::after {
    content: "";
    display: block;
    width: 2px;
    height: 14px;
    margin: 8px auto 0;
    background: rgba(255, 255, 255, 0.55);
    border-radius: 2px;
}

.vr-badge {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.18em;
    color: rgba(255, 220, 170, 0.7);
    text-align: right;
}

.vintage-radio.is-hot .vr-glow {
    background: linear-gradient(180deg, transparent, rgba(255, 176, 32, 0.28));
}

.vintage-radio.is-night .vr-glow {
    background: linear-gradient(180deg, transparent, rgba(120, 160, 255, 0.22));
}

.vintage-radio.is-hot .vr-freq-readout {
    color: #ffb020;
    text-shadow: 0 0 14px rgba(255, 176, 32, 0.45);
}

.vintage-radio.is-night .vr-freq-readout {
    color: #8ab4ff;
    text-shadow: 0 0 14px rgba(120, 160, 255, 0.4);
}

.vr-shadow {
    margin: 10px auto 0;
    width: 78%;
    height: 18px;
    border-radius: 50%;
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.55), transparent 70%);
    filter: blur(2px);
}

/* ----- Story ----- */
.about-story {
    padding: 28px 28px 32px;
    border-radius: 22px;
    background: rgba(18, 14, 10, 0.72);
    border: 1px solid rgba(255, 210, 150, 0.14);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    animation: aboutFadeUp 1s ease 0.25s both;
}

.about-story h2 {
    margin: 0 0 14px;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    color: var(--paper);
}

.about-story > p {
    color: var(--mist);
    line-height: 1.65;
    margin: 0 0 14px;
}

.about-points {
    list-style: none;
    margin: 24px 0 28px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.about-points li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.about-point-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--signal);
    letter-spacing: 0.08em;
    padding-top: 2px;
}

.about-points strong {
    display: block;
    color: var(--paper);
    margin-bottom: 4px;
}

.about-points span {
    color: var(--mist);
    font-size: 0.92rem;
    line-height: 1.45;
}

.about-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ffb020, #ff8a3d);
    color: #1a1208;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 10px 28px rgba(255, 138, 61, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.about-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 34px rgba(255, 138, 61, 0.45);
}

@keyframes aboutFadeUp {
    from { opacity: 0; transform: translateY(22px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes aboutFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes aboutDialPulse {
    0%, 100% { opacity: 0.45; }
    50% { opacity: 1; }
}

@keyframes aboutAntennaGlow {
    0%, 100% { box-shadow: 0 0 10px rgba(255, 176, 32, 0.55); opacity: 0.8; }
    50% { box-shadow: 0 0 22px rgba(255, 176, 32, 1); opacity: 1; }
}

@media (max-width: 900px) {
    .about-showcase {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .vintage-radio {
        width: min(100%, 340px);
    }
}

@media (max-width: 520px) {
    .about-main { padding-top: 24px; }
    .about-story { padding: 22px 18px 26px; }
    .vr-body { padding: 16px; gap: 10px; }
    .vr-grille span { min-height: 96px; }
}

@media (prefers-reduced-motion: reduce) {
    .vintage-radio,
    .vr-needle,
    .vr-meter i,
    .vr-knob,
    .about-wave,
    .vr-antenna::after,
    .vr-glow {
        animation: none !important;
    }
}