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

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── Welcome screen ───────────────────────────────────────── */
#welcome-screen {
    position: fixed;
    inset: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(150deg, #0c0c1e 0%, #0a0a0a 55%, #1a0a12 100%);
    transition: opacity 0.7s ease;
    overflow: hidden;
}

#welcome-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Soft ambient glow behind content */
#welcome-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(110, 70, 255, 0.10) 0%, transparent 70%);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    animation: glowPulse 5s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.2); }
}

#welcome-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 0 40px;
    gap: 0;
    position: relative;
}

#welcome-title {
    font-size: clamp(44px, 13vw, 68px);
    font-weight: 800;
    color: #fff;
    margin: 0;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

#welcome-tagline {
    font-size: clamp(14px, 3.8vw, 18px);
    color: rgba(255, 255, 255, 0.45);
    margin: 14px 0 0;
    font-weight: 400;
    letter-spacing: 0.025em;
}

#start-btn {
    margin-top: 48px;
    padding: 18px 48px;
    border-radius: 50px;
    border: none;
    background: #fff;
    color: #111;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: transform 0.15s ease, opacity 0.15s ease;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

#start-btn:active {
    transform: scale(0.95);
    opacity: 0.82;
}

/* ── Scan overlay ─────────────────────────────────────────── */
#scan-overlay {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    transition: opacity 0.4s ease;
}

#scan-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Toggle between loading and scan guide */
.guide-hidden {
    display: none !important;
}

/* ── Loading guide (phase 1) ──────────────────────────────── */
#loading-guide {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    background: rgba(0, 0, 0, 0.72);
    padding: 36px 48px;
    border-radius: 20px;
}

#loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.guide-text {
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    font-weight: 400;
    text-align: center;
    margin: 0;
}

/* ── Scan guide (phase 2) ─────────────────────────────────── */
#scan-guide {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 0 32px;
}

#postcard-frame {
    position: relative;
    width: min(72vw, 320px);
}

#postcard-preview {
    width: 100%;
    border-radius: 10px;
    opacity: 0.4;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

/* Corner markers */
#postcard-frame::before,
#postcard-frame::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: #fff;
    border-style: solid;
    opacity: 0.8;
}

#postcard-frame::before {
    top: -4px; left: -4px;
    border-width: 2px 0 0 2px;
    border-radius: 3px 0 0 0;
}

#postcard-frame::after {
    top: -4px; right: -4px;
    border-width: 2px 2px 0 0;
    border-radius: 0 3px 0 0;
}

#scan-hint {
    color: rgba(255, 255, 255, 0.95);
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    margin: 0;
    letter-spacing: 0.01em;
    background: rgba(0, 0, 0, 0.55);
    padding: 12px 22px;
    border-radius: 18px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ── Hint bar ─────────────────────────────────────────────── */
#hint-bar {
    position: fixed;
    bottom: 155px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    pointer-events: none;
    transition: opacity 0.3s ease;
    white-space: nowrap;
}

#hint-bar.hidden {
    opacity: 0;
}

#hint-text {
    display: block;
    color: rgba(255, 255, 255, 0.95);
    font-size: 13px;
    font-weight: 500;
    background: rgba(0, 0, 0, 0.55);
    padding: 8px 18px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    text-align: center;
}

/* ── Recording countdown overlay ──────────────────────────── */
#record-overlay {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: rgba(0, 0, 0, 0.55);
    pointer-events: none;
    transition: opacity 0.2s ease;
}

#record-overlay.hidden {
    opacity: 0;
}

#record-ring {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: 3px solid rgba(220, 38, 38, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: recordPulse 1s ease-in-out infinite;
}

#record-count {
    color: #fff;
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
}

#record-label {
    color: #fff;
    font-size: 17px;
    font-weight: 600;
    margin: 0;
}

#record-sublabel {
    color: rgba(255, 255, 255, 0.65);
    font-size: 13px;
    margin: 0;
}

@keyframes recordPulse {
    0%, 100% { border-color: rgba(220, 38, 38, 0.85); transform: scale(1); }
    50%       { border-color: rgba(220, 38, 38, 1);    transform: scale(1.06); }
}

/* ── Recording info bottom sheet ─────────────────────────── */
#record-info-modal {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: flex-end;
    pointer-events: all;
    transition: opacity 0.3s ease;
}

#record-info-modal.hidden {
    opacity: 0;
    pointer-events: none;
}

#record-info-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

#record-info-sheet {
    position: relative;
    width: 100%;
    background: rgba(18, 18, 28, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 24px 24px 0 0;
    padding: 12px 24px 48px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transform: translateY(0);
    transition: transform 0.4s cubic-bezier(0.32, 0.72, 0, 1);
}

#record-info-modal.hidden #record-info-sheet {
    transform: translateY(110%);
}

#record-info-handle {
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.2);
    align-self: center;
    margin-bottom: 4px;
}

#record-info-title {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.01em;
}

#record-steps {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.record-step {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.step-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
}

.step-body {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.step-body strong {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    display: block;
}

.step-body span {
    color: rgba(255, 255, 255, 0.45);
    font-size: 13px;
}

#record-info-start {
    width: 100%;
    padding: 16px;
    border-radius: 14px;
    border: none;
    background: #fff;
    color: #111;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

#record-info-start:active {
    opacity: 0.82;
    transform: scale(0.98);
}

#record-info-cancel {
    width: 100%;
    padding: 10px;
    border-radius: 14px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.4);
    font-size: 15px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    margin-top: -8px;
}

/* ── Bottom UI ────────────────────────────────────────────── */
#ui {
    position: fixed;
    bottom: 50px;
    left: 0;
    right: 0;
    padding: 16px 20px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent);
    pointer-events: none;
    z-index: 10;
}

#room-buttons {
    display: flex;
    gap: 10px;
    pointer-events: all;
}

.room-btn {
    padding: 10px 20px;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: rgba(255, 255, 255, 0.65);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.room-btn.active {
    background: rgba(255, 255, 255, 0.92);
    border-color: transparent;
    color: #111;
}

/* ── Mic button ───────────────────────────────────────────── */
#mic-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: all;
    transition: background 0.2s, border-color 0.2s;
    -webkit-tap-highlight-color: transparent;
}

#mic-btn.recording {
    background: rgba(220, 38, 38, 0.85);
    border-color: rgba(220, 38, 38, 0.9);
    animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.5); }
    50%       { box-shadow: 0 0 0 10px rgba(220, 38, 38, 0); }
}

/* EchoLens composer */
#welcome-screen {
    align-items: flex-start;
    padding: 32px 18px;
    overflow-y: auto;
    background:
        radial-gradient(ellipse at 20% 12%, rgba(34, 211, 238, 0.18), transparent 34%),
        radial-gradient(ellipse at 88% 18%, rgba(251, 191, 36, 0.16), transparent 30%),
        linear-gradient(142deg, #071316 0%, #191327 42%, #331b16 72%, #071d26 100%);
}

#welcome-glow {
    inset: -18%;
    width: auto;
    height: auto;
    border-radius: 0;
    background:
        linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 36%),
        radial-gradient(ellipse at center, rgba(255, 255, 255, 0.07), transparent 52%);
    top: auto;
    left: auto;
    transform: none;
    animation: none;
}

#welcome-content {
    width: min(1120px, 100%);
    margin: auto;
    padding: 28px 0 44px;
    align-items: stretch;
    gap: 24px;
}

#brand-block {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

#welcome-kicker {
    margin: 0 0 10px;
    color: rgba(255, 224, 173, 0.78);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

#welcome-title {
    font-size: 58px;
    letter-spacing: 0;
    text-shadow: 0 18px 70px rgba(34, 211, 238, 0.24);
}

#welcome-tagline {
    max-width: 620px;
    margin: 14px auto 0;
    color: rgba(255, 255, 255, 0.72);
    font-size: 17px;
    line-height: 1.6;
    letter-spacing: 0;
}

#composer-layout {
    display: grid;
    grid-template-columns: minmax(320px, 640px);
    gap: 18px;
    align-items: stretch;
    justify-content: center;
}

#composer-layout.has-result {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
    justify-content: stretch;
}

#memory-form,
#ai-preview {
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 8px;
    background: rgba(10, 18, 25, 0.58);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

#memory-form {
    display: grid;
    gap: 14px;
    padding: 20px;
}

.form-row {
    display: grid;
    gap: 7px;
    text-align: left;
}

.form-row label {
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    font-weight: 650;
}

.form-row input,
.form-row textarea,
.form-row select {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font: inherit;
    font-size: 15px;
    outline: none;
    padding: 12px 13px;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.form-row textarea {
    min-height: 112px;
    resize: vertical;
    line-height: 1.45;
}

.form-row select {
    appearance: none;
    background-image:
        linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.82) 50%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.82) 50%, transparent 50%);
    background-position:
        calc(100% - 18px) 50%,
        calc(100% - 12px) 50%;
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
}

.form-row option {
    color: #111;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
    color: rgba(255, 255, 255, 0.38);
}

.form-row input:focus,
.form-row textarea:focus,
.form-row select:focus {
    border-color: rgba(34, 211, 238, 0.78);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.16);
}

#composer-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 10px;
    margin-top: 4px;
}

#generate-btn,
#start-btn {
    min-height: 48px;
    margin: 0;
    padding: 0 18px;
    border-radius: 8px;
    border: 0;
    cursor: pointer;
    font-size: 15px;
    font-weight: 750;
    letter-spacing: 0;
    transition: transform 0.15s ease, opacity 0.15s ease, background 0.2s ease;
    -webkit-tap-highlight-color: transparent;
}

#generate-btn {
    color: #061014;
    background: linear-gradient(135deg, #67e8f9, #fde68a);
}

#start-btn {
    color: #fff;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
}

#generate-btn:active,
#start-btn:active {
    transform: scale(0.98);
    opacity: 0.86;
}

#generate-btn:disabled,
#start-btn:disabled {
    cursor: not-allowed;
    opacity: 0.48;
    transform: none;
}

#composer-status {
    min-height: 18px;
    margin: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    line-height: 1.4;
    text-align: left;
}

#ai-preview {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    text-align: left;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

#ai-preview::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(34, 211, 238, 0.16), transparent 42%),
        linear-gradient(315deg, rgba(248, 113, 113, 0.15), transparent 38%);
    pointer-events: none;
}

#ai-preview.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
}

.preview-eyebrow,
#preview-title,
#preview-message,
.preview-meta,
#preview-fragments {
    position: relative;
}

.preview-eyebrow {
    margin: 0 0 10px;
    color: rgba(255, 224, 173, 0.76);
    font-size: 12px;
    font-weight: 750;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

#preview-title {
    margin: 0;
    color: #fff;
    font-size: 28px;
    line-height: 1.08;
    letter-spacing: 0;
}

#preview-message {
    margin: 14px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 15px;
    line-height: 1.6;
}

.preview-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 18px 0 0;
}

.preview-meta span {
    max-width: 100%;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.13);
    color: rgba(255, 255, 255, 0.76);
    font-size: 12px;
    font-weight: 650;
    line-height: 1.35;
    padding: 7px 10px;
}

#preview-fragments,
#memory-overlay-fragments {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

#preview-fragments li,
#memory-overlay-fragments li {
    position: relative;
    margin-top: 8px;
    padding-left: 16px;
    color: rgba(255, 255, 255, 0.76);
    font-size: 13px;
    line-height: 1.45;
}

#preview-fragments li::before,
#memory-overlay-fragments li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.62em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #67e8f9;
}

/* AR memory overlay */
#memory-overlay {
    position: fixed;
    top: max(18px, env(safe-area-inset-top));
    left: 18px;
    width: min(360px, calc(100vw - 36px));
    z-index: 11;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(5, 11, 16, 0.62);
    color: #fff;
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.34);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

#memory-overlay.hidden {
    opacity: 0;
    transform: translateY(-8px);
}

#memory-overlay-mood {
    margin: 0 0 7px;
    color: rgba(103, 232, 249, 0.86);
    font-size: 11px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

#memory-overlay-title {
    margin: 0;
    color: #fff;
    font-size: 20px;
    line-height: 1.15;
    letter-spacing: 0;
}

#memory-overlay-message {
    margin: 9px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
    line-height: 1.45;
}

@media (max-width: 820px) {
    #welcome-screen {
        padding: 20px 14px;
    }

    #welcome-content {
        padding: 18px 0 32px;
        gap: 18px;
    }

    #welcome-title {
        font-size: 44px;
    }

    #welcome-tagline {
        font-size: 15px;
    }

    #composer-layout {
        grid-template-columns: 1fr;
    }

    #composer-actions {
        grid-template-columns: 1fr;
    }

    #ai-preview {
        padding: 20px;
    }

    #preview-title {
        font-size: 24px;
    }

    #memory-overlay {
        top: max(12px, env(safe-area-inset-top));
        left: 12px;
        width: min(340px, calc(100vw - 24px));
        padding: 13px;
    }

    #hint-bar {
        bottom: 146px;
        width: calc(100vw - 28px);
        white-space: normal;
    }
}