:root {
    --text: #fff;
    --text-2: rgba(255, 255, 255, 0.62);
    --accent: var(--tg-theme-button-color, #0a84ff);

    /* Liquid glass tokens */
    --glass-bg: rgba(255, 255, 255, 0.12);
    --glass-bg-strong: rgba(255, 255, 255, 0.18);
    --glass-border: rgba(255, 255, 255, 0.28);
    --glass-highlight: rgba(255, 255, 255, 0.55);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
    --blur: blur(22px) saturate(180%);

    --radius-card: 26px;
    --radius-btn: 16px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    color: var(--text);
    background: #0b0b10;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

/* Soft ambient color so the glass has something to refract */
body::before {
    content: "";
    position: fixed;
    inset: -20%;
    z-index: 0;
    background:
        radial-gradient(40% 35% at 20% 18%, rgba(120, 160, 255, 0.30), transparent 70%),
        radial-gradient(45% 40% at 85% 25%, rgba(255, 120, 200, 0.22), transparent 70%),
        radial-gradient(50% 45% at 70% 90%, rgba(90, 220, 200, 0.20), transparent 70%);
    filter: blur(10px);
    pointer-events: none;
}

#app {
    position: relative;
    z-index: 1;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* ── Views & transitions ──────────────────────────────── */

#scanner-view,
#result-view,
#manual-view,
#error-view {
    height: 100%;
    display: flex;
    flex-direction: column;
}

#result-view,
#manual-view,
#error-view {
    justify-content: center;
    padding: 0 18px calc(18px + var(--safe-bottom));
}

#scanner-view:not(.hidden),
#result-view:not(.hidden),
#manual-view:not(.hidden),
#error-view:not(.hidden) {
    animation: viewIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.hidden {
    display: none !important;
}

/* ── Scanner ───────────────────────────────────────────── */

#video-container {
    position: relative;
    flex: 1;
    overflow: hidden;
    background: #000;
}

#video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#scan-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Classic viewfinder — fully transparent center, only the corners are
   drawn as frosted-glass "bars". No blur over the whole frame. */
#scan-frame {
    width: 270px;
    height: 175px;
    position: relative;
    animation: breathe 3.2s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 0.8; }
    50%      { opacity: 1; }
}

/* Each corner = two rounded "pill" bars (horizontal ::before + vertical
   ::after) that meet at the elbow. Rounded ends, no square surface. */
.corner {
    position: absolute;
    width: 40px;
    height: 40px;
}

.corner::before,
.corner::after {
    content: "";
    position: absolute;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 999px;
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.corner::before { /* horizontal */
    height: 5px;
    width: 40px;
}

.corner::after {  /* vertical */
    width: 5px;
    height: 40px;
}

.corner.tl { top: 0; left: 0; }
.corner.tl::before { top: 0; left: 0; }
.corner.tl::after  { top: 0; left: 0; }

.corner.tr { top: 0; right: 0; }
.corner.tr::before { top: 0; right: 0; }
.corner.tr::after  { top: 0; right: 0; }

.corner.bl { bottom: 0; left: 0; }
.corner.bl::before { bottom: 0; left: 0; }
.corner.bl::after  { bottom: 0; left: 0; }

.corner.br { bottom: 0; right: 0; }
.corner.br::before { bottom: 0; right: 0; }
.corner.br::after  { bottom: 0; right: 0; }

#scan-hint {
    align-self: center;
    margin: 0 0 calc(22px + var(--safe-bottom));
    padding: 10px 20px;
    border-radius: 999px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: inset 0 1px 1px var(--glass-highlight), var(--glass-shadow);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: -0.2px;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

/* ── Glass panels (result / manual / error) ───────────── */

#result-card,
#manual-card,
#error-card {
    background: var(--glass-bg-strong);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    padding: 28px 22px;
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    box-shadow:
        inset 0 1px 1px var(--glass-highlight),
        inset 0 -1px 2px rgba(255, 255, 255, 0.08),
        var(--glass-shadow);
}

#result-card { text-align: center; }

#barcode-display {
    font-size: 27px;
    font-weight: 700;
    letter-spacing: 0.5px;
    word-break: break-all;
    margin-bottom: 6px;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.25);
}

#result-hint {
    color: var(--text-2);
    margin: 0 0 22px;
    font-size: 14px;
    font-weight: 500;
}

#result-buttons,
#manual-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Glass buttons ─────────────────────────────────────── */

.btn-primary,
.btn-secondary {
    border: 1px solid var(--glass-border);
    width: 100%;
    padding: 15px 24px;
    border-radius: var(--radius-btn);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.3px;
    cursor: pointer;
    font-family: inherit;
    color: var(--text);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    box-shadow: inset 0 1px 1px var(--glass-highlight), 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: transform 0.12s ease, background-color 0.18s ease, opacity 0.18s ease;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-primary {
    background: color-mix(in srgb, var(--accent) 55%, transparent);
}

.btn-secondary {
    background: var(--glass-bg);
}

.btn-primary:active,
.btn-secondary:active {
    transform: scale(0.97);
    opacity: 0.82;
}

/* ── Manual entry ──────────────────────────────────────── */

#manual-card p {
    margin: 0 0 14px;
    color: var(--text);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

#manual-input {
    width: 100%;
    padding: 15px 16px;
    border-radius: var(--radius-btn);
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 1px;
    text-align: center;
    font-variant-numeric: tabular-nums;
    margin: 0 0 16px;
    font-family: inherit;
    outline: none;
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    box-shadow: inset 0 1px 1px var(--glass-highlight);
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

#manual-input:focus {
    border-color: color-mix(in srgb, var(--accent) 70%, transparent);
    background: rgba(255, 255, 255, 0.12);
}

#manual-input::placeholder {
    color: var(--text-2);
    font-weight: 500;
    letter-spacing: 0.5px;
}

#manual-input::-webkit-outer-spin-button,
#manual-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

#manual-input[type=number] {
    -moz-appearance: textfield;
}

/* ── Error ─────────────────────────────────────────────── */

#error-card { text-align: center; }

#error-card p {
    margin: 0 0 20px;
    color: var(--text-2);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.4;
}