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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover">
<meta name="description" content="Coding with Grandma — AI-powered ESP32 IDE. Open-source web version or $0.99 iPhone app. Snap a photo of your breadboard, let AI write the code, flash wirelessly.">
<meta name="theme-color" content="#0B1628">
<title>Coding with Grandma — ESP32 IDE</title>
<!-- Monaco Editor from CDN -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/monaco-editor/0.45.0/min/vs/editor/editor.main.min.css">
<!-- Lucide Icons -->
<script src="https://unpkg.com/lucide@0.263.1/dist/umd/lucide.min.js"></script>
<!-- esptool-js for browser-based firmware flashing (loaded as ES module, exposed globally) -->
<script type="module">
try {
const mod = await import('https://unpkg.com/esptool-js@0.5.3/bundle.js');
window.ESPLoader = mod.ESPLoader;
window.Transport = mod.Transport;
window.__esptoolReady = true;
} catch (e) {
window.__esptoolReady = false;
window.__esptoolError = e && e.message ? e.message : String(e);
}
</script>
<style>
* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
/* === SAN DIEGO SUNSET PALETTE === */
--bg-deep: #0b1628; /* deep ocean night */
--bg-panel: #0f1f3d; /* dark navy panel */
--bg-input: #0a1225; /* deepest input bg */
--bg-hover: #162a4a; /* hover state */
--border: #1e3a5f; /* steel blue border */
--border-light: #2a4a6b; /* lighter border */
/* Sunset accents */
--orange: #ff8c42; /* warm sunset orange */
--orange-hover: #ffa663; /* lighter orange */
--orange-glow: rgba(255, 140, 66, 0.12);
--coral: #ff6b6b; /* coral pink */
--blue: #4a9eff; /* ocean blue */
--blue-deep: #2d7dd2; /* deeper blue */
--gold: #ffc857; /* sunset gold */
/* Status colors */
--green: #2ecc71;
--red: #ff5252;
--yellow: #ffc857;
/* Text — crisp whites */
--text: #ffffff; /* pure white */
--text-dim: #b8c9e0; /* soft blue-white */
--text-dimmer: #6b8299; /* muted steel */
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background: var(--bg-deep);
color: var(--text);
height: 100vh;
display: flex;
flex-direction: column;
overflow: hidden;
}
/* ===== ANIMATIONS ===== */
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slideIn { from { transform: translateX(-10px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes sunsetGlow {
0%, 100% { box-shadow: 0 0 15px rgba(255, 140, 66, 0.2); }
50% { box-shadow: 0 0 25px rgba(255, 140, 66, 0.4); }
}
@keyframes heroPulse {
0%, 100% { box-shadow: 0 0 0 0 rgba(255, 140, 66, 0.35), 0 8px 24px -6px rgba(255, 140, 66, 0.45); }
50% { box-shadow: 0 0 0 10px rgba(255, 140, 66, 0.0), 0 10px 30px -4px rgba(255, 140, 66, 0.55); }
}
@keyframes savedPulse {
0% { opacity: 0; transform: translateX(-4px) scale(0.9); }
15% { opacity: 1; transform: translateX(0) scale(1.02); }
70% { opacity: 1; transform: translateX(0) scale(1); }
100% { opacity: 0; transform: translateX(0) scale(1); }
}
/* ===== LANGUAGE SWITCH ===== */
.lang-switch {
display: inline-flex;
gap: 0;
margin-left: 0.55rem;
padding: 3px;
background: rgba(255,255,255,0.04);
border: 1px solid var(--border);
border-radius: 999px;
overflow: hidden;
}
.lang-opt {
background: transparent;
border: none;
color: var(--text-dim);
font-size: 0.72rem;
font-weight: 600;
letter-spacing: 0.02em;
padding: 0.28rem 0.7rem;
border-radius: 999px;
cursor: pointer;
transition: background 0.18s ease, color 0.18s ease;
}
.lang-opt:hover { color: #ffffff; }
.lang-opt.active {
background: linear-gradient(135deg, var(--orange), var(--coral));
color: #ffffff;
box-shadow: 0 0 10px -2px rgba(255, 140, 66, 0.45);
}
/* ===== SAVE INDICATOR ===== */
.save-indicator {
display: inline-flex;
align-items: center;
gap: 0.35rem;
padding: 0.25rem 0.55rem;
background: rgba(46, 204, 113, 0.10);
border: 1px solid rgba(46, 204, 113, 0.25);
border-radius: 999px;
font-size: 0.7rem;
color: #ffffff;
margin-left: 0.5rem;
opacity: 0;
transition: opacity 0.3s ease;
}
.save-indicator.pulse { animation: savedPulse 1.6s ease forwards; }
.save-dot {
width: 6px; height: 6px; border-radius: 50%;
background: var(--green);
box-shadow: 0 0 6px var(--green);
}
.save-text { letter-spacing: 0.02em; font-weight: 500; }
/* ===== HERO SNAP BUTTON ===== */
.hero-snap-btn {
width: 100%;
padding: 1.1rem 1rem;
background: linear-gradient(135deg, var(--orange) 0%, var(--coral) 100%);
color: #ffffff;
font-weight: 700;
font-size: 1rem;
letter-spacing: 0.02em;
border: none;
border-radius: 14px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
gap: 0.6rem;
animation: heroPulse 3.2s ease-in-out infinite;
transition: transform 0.15s ease, filter 0.15s ease;
}
.hero-snap-btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.hero-snap-btn:active { transform: translateY(0); }
/* ===== ONBOARDING CHOICE CARDS ===== */
.onboard-choices {
display: grid;
gap: 0.65rem;
margin-bottom: 0.5rem;
}
.onboard-choice {
display: flex;
gap: 0.9rem;
align-items: center;
text-align: left;
padding: 0.95rem 1rem;
background: rgba(255, 255, 255, 0.03);
border: 1px solid var(--border);
border-radius: 14px;
color: #ffffff;
cursor: pointer;
transition: background 0.18s ease, border-color 0.18s ease, transform 0.12s ease;
}
.onboard-choice:hover {
background: rgba(255, 140, 66, 0.08);
border-color: var(--orange);
transform: translateY(-1px);
}
.onboard-choice.onboard-skip {
background: transparent;
opacity: 0.75;
}
.onboard-choice.onboard-skip:hover {
opacity: 1;
border-color: var(--border-light);
background: rgba(255,255,255,0.04);
}
.onboard-choice .oc-icon {
flex: 0 0 44px;
width: 44px; height: 44px;
border-radius: 10px;
background: linear-gradient(135deg, var(--orange), var(--coral));
display: flex; align-items: center; justify-content: center;
font-size: 1.3rem;
}
.onboard-choice.onboard-skip .oc-icon {
background: rgba(255,255,255,0.05);
}
.onboard-choice .oc-title { color: #ffffff; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.15rem; }
.onboard-choice .oc-desc { color: var(--text-dim); font-size: 0.78rem; line-height: 1.45; }
.btn-welcome.onboard-secondary {
background: transparent;
border: 1px solid var(--border-light);
color: var(--text-dim);
}
.btn-welcome.onboard-secondary:hover { filter: none; color: #ffffff; border-color: var(--text-dim); }
#onboard-snap-controls { display: none; gap: 0.5rem; }
#onboard-snap-controls.visible { display: flex; }
/* ===== WELCOME MODAL ===== */
.welcome-modal-overlay {
position: fixed; inset: 0;
background: rgba(0,0,0,0.72);
backdrop-filter: blur(8px);
-webkit-backdrop-filter: blur(8px);
display: none;
align-items: center;
justify-content: center;
z-index: 9999;
animation: fadeIn 0.4s ease;
}
.welcome-modal-overlay.visible { display: flex; }
.welcome-modal {
max-width: 520px;
width: calc(100% - 2rem);
max-height: 90vh; /* never taller than the screen */
overflow-y: auto; /* scroll the steps on short phones */
-webkit-overflow-scrolling: touch;
background: linear-gradient(160deg, #0f1f3d 0%, #0b1628 100%);
border: 1px solid var(--border-light);
border-radius: 18px;
padding: 2rem 1.8rem;
color: #ffffff;
box-shadow: 0 24px 80px -12px rgba(0,0,0,0.7), 0 0 40px -8px rgba(255,140,66,0.15);
}
.welcome-modal h1 {
font-size: 1.65rem;
font-weight: 800;
background: linear-gradient(135deg, var(--orange), var(--gold), var(--coral));
-webkit-background-clip: text;
background-clip: text;
-webkit-text-fill-color: transparent;
margin-bottom: 0.4rem;
letter-spacing: -0.5px;
}
.welcome-modal .w-sub {
color: #ffffff;
font-size: 0.95rem;
line-height: 1.5;
margin-bottom: 1.3rem;
font-weight: 400;
}
.welcome-steps { display: grid; gap: 0.7rem; margin-bottom: 1.4rem; }
.welcome-step {
display: flex; gap: 0.85rem; align-items: flex-start;
padding: 0.75rem 0.85rem;
background: rgba(255,255,255,0.03);
border: 1px solid var(--border);
border-radius: 12px;
}
.welcome-step .w-num {
flex: 0 0 28px;
width: 28px; height: 28px;
border-radius: 50%;
background: linear-gradient(135deg, var(--orange), var(--coral));
color: #fff; font-weight: 700; font-size: 0.85rem;
display: flex; align-items: center; justify-content: center;
}
.welcome-step .w-title { color: #ffffff; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.1rem; }
.welcome-step .w-body { color: var(--text-dim); font-size: 0.82rem; line-height: 1.5; }
.welcome-modal .btn-welcome {
width: 100%;
padding: 0.85rem;
background: linear-gradient(135deg, var(--orange), var(--coral));
color: #fff;
border: none;
border-radius: 12px;
font-size: 0.95rem;
font-weight: 700;
cursor: pointer;
letter-spacing: 0.02em;
transition: filter 0.15s ease;
}
.welcome-modal .btn-welcome:hover { filter: brightness(1.1); }
.loading-spinner {
width: 16px; height: 16px;
border: 2px solid var(--border);
border-top-color: var(--orange);
border-radius: 50%;
animation: spin 0.8s linear infinite;
display: inline-block;
}
/* ===== TOP BAR ===== */
.topbar {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.4rem 1rem;
background: linear-gradient(135deg, var(--bg-panel) 0%, #132742 100%);
border-bottom: 1px solid var(--border);
height: 52px;
flex-shrink: 0;
}
.topbar-left {
display: flex;
align-items: center;
gap: 0.8rem;
}
.logo {
font-size: 1.15rem;
font-weight: 800;
background: linear-gradient(135deg, var(--orange), var(--gold), var(--coral));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
letter-spacing: -0.3px;
}
.logo-sub {
font-size: 0.6rem;
color: var(--text-dimmer);
font-weight: 500;
margin-left: -0.3rem;
}
.version-badge {
font-size: 0.55rem;
background: var(--orange);
color: var(--bg-deep);
padding: 0.1rem 0.4rem;
border-radius: 4px;
font-weight: 700;
}
.topbar-actions { display: flex; gap: 0.5rem; }
.btn {
padding: 0.4rem 0.85rem;
border: 1px solid var(--border);
border-radius: 8px;
background: var(--bg-input);
color: var(--text);
font-size: 0.8rem;
font-weight: 600;
cursor: pointer;
display: flex;
align-items: center;
gap: 0.4rem;
transition: all 0.2s;
white-space: nowrap;
}
.btn:hover { border-color: var(--orange); color: var(--orange); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-orange {
background: linear-gradient(135deg, var(--orange), #e67a30);
color: white;
border-color: var(--orange);
font-weight: 700;
}
.btn-orange:hover { background: linear-gradient(135deg, var(--orange-hover), var(--orange)); color: white; }
.btn-green { background: var(--green); color: white; border-color: var(--green); }
.btn-green:hover { background: #3ddb85; color: white; }
.btn-blue { background: var(--blue); color: white; border-color: var(--blue); }
.btn-blue:hover { background: #5daeff; color: white; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.7rem; }
.connection-status {
display: flex;
align-items: center;
gap: 0.4rem;
font-size: 0.8rem;
color: var(--text-dim);
}
.status-dot {
width: 9px; height: 9px;
border-radius: 50%;
background: var(--text-dimmer);
transition: all 0.3s;
}
.status-dot.connected {
background: var(--green);
box-shadow: 0 0 8px var(--green);
}
/* ===== MAIN LAYOUT ===== */
.main { display: flex; flex: 1; overflow: hidden; }
/* ===== LEFT SIDEBAR ===== */
.sidebar {
width: 340px;
background: var(--bg-panel);
border-right: 1px solid var(--border);
display: flex;
flex-direction: column;
flex-shrink: 0;
}
.sidebar-tabs {
display: flex;
border-bottom: 1px solid var(--border);
background: rgba(0,0,0,0.15);
}
.sidebar-tab {
flex: 1;
padding: 0.65rem 0.5rem;
text-align: center;
font-size: 0.72rem;
font-weight: 600;
color: var(--text-dimmer);
cursor: pointer;
border: none;
background: none;
border-bottom: 2px solid transparent;
transition: all 0.2s;
display: flex;
align-items: center;
justify-content: center;
gap: 0.3rem;
}
.sidebar-tab:hover { color: var(--text-dim); }
.sidebar-tab.active { color: var(--orange); border-bottom-color: var(--orange); }
.sidebar-panel { display: none; flex: 1; overflow-y: auto; padding: 0.8rem; }
.sidebar-panel.active { display: block; }
.section { margin-bottom: 1rem; }
.section-label {
display: block;
font-size: 0.7rem;
font-weight: 700;
color: var(--orange);
margin-bottom: 0.4rem;
text-transform: uppercase;
letter-spacing: 0.8px;
}
.section textarea,
.section select,
.section input[type="text"],
.section input[type="password"],
.section input[type="url"],
.section input[type="number"] {
width: 100%;
padding: 0.55rem 0.6rem;
border: 1px solid var(--border);
border-radius: 8px;
background: var(--bg-input);
color: var(--text);
font-size: 0.85rem;
font-family: inherit;
transition: border-color 0.2s, box-shadow 0.2s;
}
.section textarea { resize: vertical; min-height: 80px; }
.section textarea:focus,
.section select:focus,
.section input:focus {
outline: none;
border-color: var(--orange);
box-shadow: 0 0 0 2px var(--orange-glow);
}
/* AI Provider Card */
.provider-card {
border: 1px solid var(--border);
border-radius: 10px;
padding: 0.6rem 0.7rem;
margin-bottom: 0.5rem;
cursor: pointer;
transition: all 0.2s;
display: flex;
align-items: center;
gap: 0.6rem;
}
.provider-card:hover { border-color: var(--border-light); background: var(--bg-hover); }
.provider-card.selected {
border-color: var(--orange);
background: var(--orange-glow);
box-shadow: 0 0 12px rgba(255, 140, 66, 0.08);
}
.provider-icon {
width: 38px; height: 38px;
border-radius: 10px;
display: flex;
align-items: center;
justify-content: center;
font-size: 0.95rem;
font-weight: 800;
flex-shrink: 0;
}
.provider-info { flex: 1; min-width: 0; }
.provider-name { font-weight: 700; font-size: 0.85rem; color: var(--text); }
.provider-desc { font-size: 0.7rem; color: var(--text-dimmer); }
.provider-status {
font-size: 0.6rem;
padding: 0.15rem 0.45rem;
border-radius: 5px;
font-weight: 700;
flex-shrink: 0;
text-transform: uppercase;
letter-spacing: 0.3px;
}
.provider-status.ready { background: rgba(46,204,113,0.15); color: var(--green); }
.provider-status.needs-key { background: rgba(255,200,87,0.15); color: var(--gold); }
.provider-status.checking { background: rgba(74,158,255,0.15); color: var(--blue); }
/* API Key Input */
.key-input-group { display: none; margin-top: 0.5rem; animation: slideIn 0.2s; }
.key-input-group.visible { display: block; }
.key-input-row { display: flex; gap: 0.3rem; }
.key-input-row input { flex: 1; font-size: 0.8rem; }
/* AI Response */
.ai-response-area {
border: 1px solid var(--border);
border-radius: 10px;
background: var(--bg-input);
padding: 0.7rem;
min-height: 100px;
max-height: 200px;
overflow-y: auto;
font-size: 0.8rem;
line-height: 1.5;
color: var(--text-dim);
}
.ai-response-area.has-content { color: var(--text); }
.ai-response-area .thinking { animation: pulse 1.5s infinite; color: var(--orange); }
/* Template Grid */
.template-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 0.5rem;
}
.template-btn {
padding: 0.6rem;
border: 1px solid var(--border);
border-radius: 10px;
background: var(--bg-input);
color: var(--text);
font-size: 0.75rem;
cursor: pointer;
text-align: left;
transition: all 0.2s;
}
.template-btn:hover {
border-color: var(--orange);
background: var(--orange-glow);
transform: translateY(-1px);
}
.template-btn .t-icon { font-size: 1.2rem; margin-bottom: 0.25rem; }
.template-btn .t-name { font-weight: 700; margin-bottom: 0.1rem; color: var(--text); }
.template-btn .t-desc { color: var(--text-dimmer); font-size: 0.65rem; }
/* Settings */
.setting-row {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0.55rem 0;
border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: none; }
.setting-label { font-size: 0.8rem; font-weight: 600; color: var(--text); }
.setting-desc { font-size: 0.7rem; color: var(--text-dimmer); }
.setting-row select,
.setting-row input[type="number"] {
width: 120px;
padding: 0.3rem;
font-size: 0.8rem;
}
.toggle-switch {
position: relative;
width: 42px; height: 24px;
background: var(--border);
border-radius: 12px;
cursor: pointer;
transition: background 0.2s;
}
.toggle-switch.on { background: var(--orange); }
.toggle-switch::after {
content: '';
position: absolute;
top: 2px; left: 2px;
width: 20px; height: 20px;
border-radius: 50%;
background: white;
transition: transform 0.2s;
box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.toggle-switch.on::after { transform: translateX(18px); }
/* ===== CENTER - EDITOR ===== */
.editor-area {
flex: 1;
display: flex;
flex-direction: column;
min-width: 0;
}
.editor-tabs {
display: flex;
background: var(--bg-panel);
border-bottom: 1px solid var(--border);
height: 38px;
align-items: flex-end;
padding-left: 0.5rem;
}
.editor-tab {
padding: 0.45rem 1rem;
font-size: 0.8rem;
color: var(--text-dim);
cursor: pointer;
border: 1px solid transparent;
border-bottom: none;
border-radius: 8px 8px 0 0;
background: transparent;
font-weight: 500;
}
.editor-tab.active {
background: var(--bg-deep);
color: var(--text);
border-color: var(--border);
font-weight: 600;
}
#editor-container { flex: 1; }
/* ===== BOTTOM PANEL ===== */
.bottom-panel {
height: 200px;
background: var(--bg-panel);
border-top: 1px solid var(--border);
display: flex;
flex-direction: column;
flex-shrink: 0;
}
.bottom-tabs {
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 0.5rem;
height: 34px;
border-bottom: 1px solid var(--border);
background: rgba(0,0,0,0.1);
}
.bottom-tabs-left { display: flex; gap: 0; }
.bottom-tab {
padding: 0.35rem 0.8rem;
font-size: 0.75rem;
color: var(--text-dim);
cursor: pointer;
border: none;
background: none;
font-weight: 500;
}
.bottom-tab.active { color: var(--orange); font-weight: 700; }
.bottom-tabs-right { display: flex; gap: 0.4rem; align-items: center; }
.baud-select {
padding: 0.2rem 0.4rem;
font-size: 0.7rem;
background: var(--bg-input);
border: 1px solid var(--border);
border-radius: 6px;
color: var(--text);
}
.serial-output {
flex: 1;
padding: 0.6rem;
font-family: 'Consolas', 'Courier New', monospace;
font-size: 0.8rem;
line-height: 1.5;
overflow-y: auto;
color: var(--green);
background: #060d18;
}
.serial-output .sys-msg { color: var(--orange); }
.serial-output .err-msg { color: var(--red); }
.serial-output .warn-msg { color: var(--gold); }
.serial-output .ts { color: var(--text-dimmer); font-size: 0.7rem; margin-right: 0.5rem; }
.serial-input-row { display: flex; border-top: 1px solid var(--border); }
.serial-input-row input {
flex: 1;
padding: 0.45rem 0.6rem;
background: var(--bg-input);
border: none;
color: var(--text);
font-family: 'Consolas', monospace;
font-size: 0.8rem;
}
.serial-input-row input:focus { outline: none; }
.serial-input-row button {
padding: 0.45rem 1rem;
background: var(--orange);
color: white;
border: none;
font-weight: 700;
font-size: 0.75rem;
cursor: pointer;
transition: background 0.15s;
}
.serial-input-row button:hover { background: var(--orange-hover); }
/* ===== RESIZE HANDLE ===== */
.resize-handle {
height: 4px;
background: var(--border);
cursor: ns-resize;
flex-shrink: 0;
transition: background 0.15s;
}
.resize-handle:hover { background: var(--orange); }
/* ===== MODAL ===== */
.modal-overlay {
display: none;
position: fixed;
inset: 0;
background: rgba(5, 10, 20, 0.8);
z-index: 100;
align-items: center;
justify-content: center;
backdrop-filter: blur(4px);
}
.modal-overlay.visible { display: flex; }
.modal {
background: var(--bg-panel);
border: 1px solid var(--border);
border-radius: 16px;
padding: 1.8rem;
max-width: 500px;
width: 90%;
animation: fadeIn 0.2s;
box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal h2 {
background: linear-gradient(135deg, var(--orange), var(--gold));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
background-clip: text;
font-size: 1.15rem;
margin-bottom: 0.6rem;
}
.modal p { color: var(--text-dim); font-size: 0.85rem; line-height: 1.6; margin-bottom: 1rem; }
.modal-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }
/* ===== LOADING OVERLAY ===== */
.loading-overlay {
display: none;
position: absolute;
inset: 0;
background: rgba(11, 22, 40, 0.9);
z-index: 50;
align-items: center;
justify-content: center;
flex-direction: column;
gap: 1rem;
backdrop-filter: blur(2px);
}
.loading-overlay.visible { display: flex; }
.loading-overlay .loading-text { color: var(--orange); font-weight: 700; font-size: 0.95rem; }
.loading-overlay .loading-spinner-lg {
width: 44px; height: 44px;
border: 3px solid var(--border);
border-top-color: var(--orange);
border-radius: 50%;
animation: spin 0.8s linear infinite;
}
/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-light); }
/* ===== FLASH MODAL / PROGRESS ===== */
.flash-row { display: flex; align-items: center; gap: 0.5rem; margin: 0.6rem 0; flex-wrap: wrap; }
.flash-row label { font-size: 0.8rem; color: var(--text-dim); flex: 1 0 100%; font-weight: 600; }
.flash-row input[type="file"] { font-size: 0.75rem; color: var(--text-dim); flex: 1; }
.flash-row input[type="text"], .flash-row select { flex: 1; background: var(--bg-input); border: 1px solid var(--border); color: var(--text); padding: 0.4rem 0.6rem; border-radius: 6px; font-size: 0.8rem; }
.progress-wrap { width: 100%; background: var(--bg-input); border: 1px solid var(--border); border-radius: 8px; height: 18px; overflow: hidden; margin: 0.6rem 0 0.3rem; }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--orange), var(--gold)); transition: width 0.25s; }
.progress-text { font-size: 0.72rem; color: var(--text-dim); text-align: center; font-variant-numeric: tabular-nums; }
.flash-log { background: var(--bg-input); border: 1px solid var(--border); border-radius: 6px; padding: 0.5rem; font-family: ui-monospace, monospace; font-size: 0.7rem; color: var(--text-dim); max-height: 140px; overflow-y: auto; margin-top: 0.5rem; white-space: pre-wrap; }
.hint { font-size: 0.72rem; color: var(--text-dimmer); line-height: 1.5; margin: 0.3rem 0 0.6rem; }
/* ===== LESSONS ===== */
.lesson-card { background: var(--bg-input); border: 1px solid var(--border); border-radius: 10px; padding: 0.8rem; margin-bottom: 0.6rem; transition: all 0.2s; cursor: pointer; }
.lesson-card:hover { border-color: var(--orange); transform: translateY(-1px); }
/* ===== SAVED PROJECTS ===== */
.saved-project { display: flex; align-items: center; gap: 0.5rem; background: var(--bg-input); border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem 0.7rem; margin-bottom: 0.5rem; transition: border-color 0.15s ease; }
.saved-project:hover { border-color: var(--border-light); }
.saved-project .sp-info { flex: 1; min-width: 0; cursor: pointer; }
.saved-project .sp-name { font-size: 0.85rem; font-weight: 600; color: #ffffff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.saved-project .sp-meta { font-size: 0.66rem; color: var(--text-dimmer); margin-top: 0.1rem; }
.saved-project .sp-lang { color: var(--orange); font-weight: 700; }
.saved-project .sp-actions { display: flex; gap: 0.2rem; flex-shrink: 0; }
.saved-project .sp-btn { background: transparent; border: none; color: var(--text-dim); font-size: 0.85rem; width: 26px; height: 26px; border-radius: 6px; cursor: pointer; transition: background 0.15s ease, color 0.15s ease; }
.saved-project .sp-btn:hover { background: var(--bg-hover); color: #ffffff; }
.saved-project .sp-btn.sp-del:hover { background: rgba(255,82,82,0.15); color: var(--red); }
.lesson-card-title { font-size: 0.85rem; font-weight: 700; color: var(--text); margin-bottom: 0.2rem; display: flex; align-items: center; gap: 0.4rem; }
.lesson-card-meta { font-size: 0.65rem; color: var(--text-dimmer); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.4rem; }
.lesson-card-desc { font-size: 0.75rem; color: var(--text-dim); line-height: 1.5; }
.lesson-step { border-left: 2px solid var(--orange); padding: 0.5rem 0.7rem; margin-bottom: 0.5rem; background: rgba(255, 140, 66, 0.05); border-radius: 0 6px 6px 0; }
.lesson-step-num { font-size: 0.6rem; color: var(--orange); font-weight: 800; text-transform: uppercase; letter-spacing: 1px; }
.lesson-step-title { font-size: 0.85rem; font-weight: 700; color: var(--text); margin: 0.1rem 0 0.3rem; }
.lesson-step-desc { font-size: 0.72rem; color: var(--text-dim); line-height: 1.5; margin-bottom: 0.4rem; }
.lesson-back { font-size: 0.7rem; color: var(--orange); cursor: pointer; margin-bottom: 0.6rem; display: inline-flex; align-items: center; gap: 0.3rem; background: none; border: none; padding: 0.3rem 0; }
.lesson-back:hover { text-decoration: underline; }
/* ===== MOBILE HAMBURGER ===== */
.mobile-menu-btn {
display: none;
background: var(--bg-input);
border: 1px solid var(--border);
color: var(--text);
padding: 0.4rem 0.6rem;
border-radius: 8px;
cursor: pointer;
font-size: 0.9rem;
}
/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
.sidebar { width: 300px; }
.logo-sub { display: none; }
}
@media (max-width: 900px) {
.sidebar { width: 260px; }
.topbar { padding: 0.3rem 0.6rem; }
.btn { padding: 0.35rem 0.6rem; font-size: 0.72rem; }
.logo { font-size: 1rem; }
}
@media (max-width: 760px) {
.mobile-menu-btn { display: inline-flex; align-items: center; gap: 0.3rem; min-height: 40px; }
.topbar { flex-wrap: wrap; height: auto; padding: 0.4rem 0.6rem; gap: 0.4rem; }
.topbar-left { flex: 1; gap: 0.4rem; }
.connection-status { font-size: 0.7rem; }
.save-indicator { display: none; } /* save still works; just hide the pill to save room */
.topbar-actions { flex-wrap: wrap; gap: 0.3rem; width: 100%; justify-content: flex-start; }
.main { flex-direction: column; }
.sidebar {
width: 100%;
height: auto;
max-height: 55vh;
border-right: none;
border-bottom: 1px solid var(--border);
display: none;
}
.sidebar.mobile-open { display: flex; }
/* Bigger, finger-friendly tab targets on touch screens */
.sidebar-tab { min-height: 44px; font-size: 0.8rem; }
.editor-area { min-height: 45vh; }
.bottom-panel { height: 160px !important; }
.modal { width: 96%; max-width: 96%; max-height: 88vh; overflow-y: auto; padding: 1rem; }
.welcome-modal { padding: 1.4rem 1.1rem; }
/* Comfortable tap targets for the main action buttons */
.btn { min-height: 40px; }
.hero-snap-btn { padding: 1.2rem 1rem; }
.onboard-choice { padding: 1.1rem 1rem; }
}
@media (max-width: 480px) {
.version-badge { display: none; }
/* Keep icons; hide text labels EXCEPT on the primary green Send button so the key action stays readable */
.btn .btn-label { display: none; }
.btn.btn-green .btn-label { display: inline; }
.btn { padding: 0.5rem 0.6rem; min-height: 42px; }
.lang-opt { padding: 0.34rem 0.6rem; } /* easier to tap */
}
</style>
</head>
<body>
<!-- TOP BAR -->
<div class="topbar">
<div class="topbar-left">
<button class="mobile-menu-btn" onclick="toggleMobileSidebar()" aria-label="Toggle menu">
<i data-lucide="menu" style="width:16px;height:16px;"></i>
</button>
<span class="logo">Coding with Grandma</span>
<div class="connection-status" title="Plug your ESP32 into your computer via USB, then click 'Plug in Board'.">
<span class="status-dot" id="status-dot"></span>
<span id="status-text">No board</span>
</div>
<div class="save-indicator" id="save-indicator" title="Your work is saved automatically — no button needed.">
<span class="save-dot"></span>
<span class="save-text">Saved</span>
</div>
<div class="lang-switch" role="tablist" aria-label="Coding language">
<button class="lang-opt active" id="lang-python" role="tab" aria-selected="true" onclick="setLanguage('python')" title="MicroPython — runs instantly on the ESP32, no compiling. Recommended for beginners.">Python</button>
<button class="lang-opt" id="lang-cpp" role="tab" aria-selected="false" onclick="setLanguage('cpp')" title="Arduino C++ — classic. Needs a compile step before running.">Arduino C++</button>
</div>
</div>
<div class="topbar-actions">
<!-- Open + Download hidden by default — Ctrl+O / Ctrl+S keyboard shortcuts still work for power users -->
<button class="btn" onclick="openSketch()" title="Open a project file" style="display:none;">
<i data-lucide="folder-open" style="width:14px;height:14px;"></i> <span class="btn-label">Open</span>
</button>
<button class="btn" onclick="saveSketch()" title="Download a copy" style="display:none;">
<i data-lucide="download" style="width:14px;height:14px;"></i> <span class="btn-label">Download</span>
</button>
<button class="btn" onclick="connectBoard()" title="Plug your ESP32 into your computer with a USB cable, then click this">
<i data-lucide="usb" style="width:14px;height:14px;"></i> <span class="btn-label">Plug in Board</span>
</button>
<button class="btn btn-blue" onclick="verifyCode()" title="Check your code for common mistakes">
<i data-lucide="check-circle" style="width:14px;height:14px;"></i> <span class="btn-label">Check</span>
</button>
<button class="btn" onclick="openShareModal()" title="Get a link to share your project with a friend or family member">
<i data-lucide="share-2" style="width:14px;height:14px;"></i> <span class="btn-label">Share</span>
</button>
<button class="btn btn-green" onclick="openFlashModal()" title="Send your finished code to the ESP32 so it starts running">
<i data-lucide="zap" style="width:14px;height:14px;"></i> <span class="btn-label">Send to Board</span>
</button>
</div>
<!-- hidden file pickers -->
<input type="file" id="open-file-input" accept=".ino,.cpp,.c,.txt" style="display:none;" onchange="handleOpenFile(event)">
</div>
<!-- MAIN CONTENT -->
<div class="main">
<!-- LEFT SIDEBAR -->
<div class="sidebar">
<div class="sidebar-tabs">
<button class="sidebar-tab active" onclick="switchSidebarTab('snap')" title="Take a photo of your breadboard and let AI write the code">
<i data-lucide="camera" style="width:14px;height:14px;"></i> Photo
</button>
<button class="sidebar-tab" onclick="switchSidebarTab('ai')" title="Describe what you want to build in plain English">
<i data-lucide="sparkles" style="width:14px;height:14px;"></i> Build
</button>
<button class="sidebar-tab" onclick="switchSidebarTab('templates')" title="Ready-made starter projects">
<i data-lucide="lightbulb" style="width:14px;height:14px;"></i> Examples
</button>
<button class="sidebar-tab" onclick="switchSidebarTab('lessons')" title="Step-by-step lessons">
<i data-lucide="graduation-cap" style="width:14px;height:14px;"></i> Learn
</button>
<button class="sidebar-tab" onclick="switchSidebarTab('saved')" title="Your saved projects">
<i data-lucide="folder" style="width:14px;height:14px;"></i> Saved
</button>
<button class="sidebar-tab" onclick="switchSidebarTab('settings')" title="Options and API key" style="flex:0 0 auto;padding-left:0.55rem;padding-right:0.55rem;">
<i data-lucide="settings" style="width:14px;height:14px;"></i>