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Add selectable landing page color themes #12

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Add selectable landing page color themes #12

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197 changes: 180 additions & 17 deletions web/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,109 @@
--radius: 16px;
--radius-sm: 10px;
--max-w: 1100px;
--bg-rgb: 11, 14, 23;
--accent-hover: #5a52d5;
--panel-bg: #1a1a2e;
--assistant-msg-bg: #16213e;
--input-bg: #1e2746;
--url-bg: rgba(0,0,0,0.3);
--hero-third: #e879f9;
--glow-secondary: rgba(167,139,250,0.12);
--text-on-accent: #fff;
--shadow-strong: rgba(0,0,0,0.4);
--shadow-soft: rgba(0,0,0,0.3);
--video-shadow: rgba(0,0,0,0.35);
--placeholder-bg: rgba(255,255,255,0.04);
--assistant-border: rgba(255,255,255,0.06);
--highlight-hover: rgba(108,99,255,0.04);
}

body[data-theme="orange"] {
--bg: #1d1208;
--bg-card: #2b1a0d;
--bg-card-hover: #3a2413;
--surface: #342014;
--border: rgba(255, 231, 210, 0.12);
--text: #ffe9d8;
--text-dim: #d7b39a;
--accent: #ff8a3d;
--accent-glow: rgba(255,138,61,0.25);
--accent2: #ffb077;
--accent-hover: #f27322;
--warning: #ffd166;
--bg-rgb: 29, 18, 8;
--panel-bg: #311b0f;
--assistant-msg-bg: #3b2315;
--input-bg: #452a19;
--url-bg: rgba(0,0,0,0.25);
--hero-third: #ffd3ad;
--glow-secondary: rgba(255, 176, 119, 0.14);
--text-on-accent: #24150b;
--shadow-strong: rgba(10, 4, 0, 0.45);
--shadow-soft: rgba(10, 4, 0, 0.35);
--video-shadow: rgba(10, 4, 0, 0.4);
--placeholder-bg: rgba(255, 255, 255, 0.07);
--assistant-border: rgba(255, 231, 210, 0.08);
--highlight-hover: rgba(255,138,61,0.08);
}

body[data-theme="whitish"] {
--bg: #f5f7fb;
--bg-card: #ffffff;
--bg-card-hover: #eef2fb;
--surface: #edf1fa;
--border: rgba(34, 62, 102, 0.12);
--text: #1f2937;
--text-dim: #5f6b80;
--accent: #4f46e5;
--accent-glow: rgba(79,70,229,0.2);
--accent2: #7c3aed;
--accent-hover: #4338ca;
--success: #16a34a;
--warning: #f59e0b;
--bg-rgb: 245, 247, 251;
--panel-bg: #f3f6fd;
--assistant-msg-bg: #e8eefb;
--input-bg: #ffffff;
--url-bg: rgba(31, 41, 55, 0.08);
--hero-third: #db2777;
--glow-secondary: rgba(124,58,237,0.1);
--text-on-accent: #ffffff;
--shadow-strong: rgba(79, 70, 229, 0.15);
--shadow-soft: rgba(31, 41, 55, 0.12);
--video-shadow: rgba(31, 41, 55, 0.18);
--placeholder-bg: rgba(31, 41, 55, 0.08);
--assistant-border: rgba(79, 70, 229, 0.15);
--highlight-hover: rgba(79,70,229,0.06);
}

body[data-theme="rosy"] {
--bg: #1a0f17;
--bg-card: #261425;
--bg-card-hover: #321a31;
--surface: #341d33;
--border: rgba(255, 214, 236, 0.14);
--text: #ffe7f5;
--text-dim: #d3a6c4;
--accent: #f43f9d;
--accent-glow: rgba(244,63,157,0.24);
--accent2: #fb7185;
--accent-hover: #e11d8f;
--warning: #f59e0b;
--bg-rgb: 26, 15, 23;
--panel-bg: #2f1830;
--assistant-msg-bg: #3d2040;
--input-bg: #45244a;
--url-bg: rgba(0,0,0,0.22);
--hero-third: #f9a8d4;
--glow-secondary: rgba(251, 113, 133, 0.15);
--text-on-accent: #ffffff;
--shadow-strong: rgba(9, 2, 7, 0.45);
--shadow-soft: rgba(9, 2, 7, 0.34);
--video-shadow: rgba(9, 2, 7, 0.4);
--placeholder-bg: rgba(255, 255, 255, 0.07);
--assistant-border: rgba(255, 214, 236, 0.1);
--highlight-hover: rgba(244,63,157,0.1);
}

html { scroll-behavior: smooth; }
Expand Down Expand Up @@ -166,7 +269,7 @@
position: absolute;
width: 400px; height: 400px;
bottom: 10%; right: -100px;
background: radial-gradient(circle, rgba(167,139,250,0.12) 0%, transparent 70%);
background: radial-gradient(circle, var(--glow-secondary) 0%, transparent 70%);
filter: blur(60px);
}

Expand All @@ -178,7 +281,7 @@
top: 0;
z-index: 100;
backdrop-filter: blur(20px);
background: rgba(11,14,23,0.8);
background: rgba(var(--bg-rgb),0.8);
border-bottom: 1px solid var(--border);
}
.nav-inner {
Expand Down Expand Up @@ -210,15 +313,41 @@
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta {
background: var(--accent) !important;
color: #fff !important;
color: var(--text-on-accent) !important;
-webkit-text-fill-color: initial !important;
padding: 8px 20px;
border-radius: 8px;
font-weight: 600;
font-size: 13px;
transition: background 0.2s, transform 0.1s;
}
.nav-cta:hover { background: #5a52d5 !important; transform: translateY(-1px); text-decoration: none !important; }
.nav-cta:hover { background: var(--accent-hover) !important; transform: translateY(-1px); text-decoration: none !important; }
.theme-switcher {
display: flex;
gap: 8px;
margin-right: 6px;
}
.theme-btn {
border: 1px solid var(--border);
background: var(--surface);
color: var(--text-dim);
border-radius: 999px;
padding: 5px 10px;
font-size: 11px;
font-weight: 600;
cursor: pointer;
transition: all 0.2s;
}
.theme-btn:hover {
color: var(--text);
border-color: var(--accent);
transform: translateY(-1px);
}
.theme-btn.active {
background: var(--accent);
color: var(--text-on-accent);
border-color: var(--accent);
}

/* ================================================================
HERO
Expand Down Expand Up @@ -257,7 +386,7 @@
letter-spacing: -1.5px;
}
.hero h1 .gradient {
background: linear-gradient(135deg, var(--accent), var(--accent2), #e879f9);
background: linear-gradient(135deg, var(--accent), var(--accent2), var(--hero-third));
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
}
Expand Down Expand Up @@ -291,7 +420,7 @@
color: #fff;
box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-primary:hover { background: #5a52d5; transform: translateY(-2px); text-decoration: none; color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); text-decoration: none; color: var(--text-on-accent); }
.btn-secondary {
background: var(--surface);
color: var(--text);
Expand All @@ -312,7 +441,7 @@
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
box-shadow: 0 24px 80px rgba(0,0,0,0.4);
box-shadow: 0 24px 80px var(--shadow-strong);
}
.browser-bar {
display: flex;
Expand All @@ -333,7 +462,7 @@
.browser-url {
flex: 1;
margin-left: 12px;
background: rgba(0,0,0,0.3);
background: var(--url-bg);
border-radius: 6px;
padding: 5px 12px;
font-size: 12px;
Expand All @@ -353,7 +482,7 @@
.browser-page h3 { color: var(--text); margin-bottom: 8px; font-size: 16px; }
.browser-page .placeholder-line {
height: 10px;
background: rgba(255,255,255,0.04);
background: var(--placeholder-bg);
border-radius: 4px;
margin-bottom: 8px;
}
Expand All @@ -364,7 +493,7 @@
.side-panel {
width: 300px;
border-left: 1px solid var(--border);
background: #1a1a2e;
background: var(--panel-bg);
display: flex;
flex-direction: column;
flex-shrink: 0;
Expand Down Expand Up @@ -415,8 +544,8 @@
animation-delay: 0.2s;
}
.sp-msg.assistant {
background: #16213e;
border: 1px solid rgba(255,255,255,0.06);
background: var(--assistant-msg-bg);
border: 1px solid var(--assistant-border);
align-self: flex-start;
animation-delay: 0.5s;
}
Expand All @@ -436,7 +565,7 @@
.sp-input-box {
display: flex;
align-items: center;
background: #1e2746;
background: var(--input-bg);
border: 1px solid var(--border);
border-radius: 10px;
padding: 8px 12px;
Expand Down Expand Up @@ -492,7 +621,7 @@
background: var(--bg-card-hover);
border-color: rgba(108,99,255,0.2);
transform: translateY(-4px);
box-shadow: 0 12px 40px rgba(0,0,0,0.3);
box-shadow: 0 12px 40px var(--shadow-soft);
}
.feature-icon {
width: 44px; height: 44px;
Expand Down Expand Up @@ -578,7 +707,7 @@
}
.mode-card:hover {
transform: translateY(-4px);
box-shadow: 0 12px 40px rgba(0,0,0,0.3);
box-shadow: 0 12px 40px var(--shadow-soft);
}
.mode-card.ask { border-top: 3px solid var(--accent); }
.mode-card.act { border-top: 3px solid var(--warning); }
Expand Down Expand Up @@ -694,7 +823,7 @@
transition: background 0.15s;
}
.compare-table tbody tr:hover {
background: rgba(108,99,255,0.04);
background: var(--highlight-hover);
}

/* ================================================================
Expand Down Expand Up @@ -767,7 +896,7 @@
overflow: hidden;
border: 1px solid var(--border);
background: #000;
box-shadow: 0 20px 40px rgba(0,0,0,0.35);
box-shadow: 0 20px 40px var(--video-shadow);
}
.video-frame iframe {
position: absolute;
Expand All @@ -785,6 +914,8 @@
.side-panel { width: 100%; border-left: none; border-top: 1px solid var(--border); min-height: 260px; }
.modes-grid { grid-template-columns: 1fr; }
.nav-links a:not(.nav-cta) { display: none; }
.theme-switcher { width: 100%; justify-content: center; margin: 6px 0 2px; }
.nav-links { gap: 8px; flex-wrap: wrap; justify-content: center; }
.providers-row { flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 480px) {
Expand Down Expand Up @@ -812,6 +943,12 @@
<span class="emoji">🧠</span> WebBrain<span style="opacity:0.5; font-weight:400;">.one</span>
</a>
<div class="nav-links">
<div class="theme-switcher" aria-label="Theme selector">
<button class="theme-btn active" type="button" data-theme="default">Dark</button>
<button class="theme-btn" type="button" data-theme="orange">Orange</button>
<button class="theme-btn" type="button" data-theme="whitish">Whitish</button>
<button class="theme-btn" type="button" data-theme="rosy">Rosy</button>
</div>
<a href="#features">Features</a>
<a href="#demo">Demo</a>
<a href="#providers">Providers</a>
Expand Down Expand Up @@ -1188,5 +1325,31 @@ <h3>100% Open Source</h3>
</div>
</footer>

<script>
(() => {
const body = document.body;
const themeButtons = document.querySelectorAll('.theme-btn');
const savedTheme = localStorage.getItem('webbrain-theme');
const initialTheme = savedTheme || 'default';

const applyTheme = (themeName) => {
if (themeName === 'default') {
body.removeAttribute('data-theme');
} else {
body.setAttribute('data-theme', themeName);
}
themeButtons.forEach((btn) => {
btn.classList.toggle('active', btn.dataset.theme === themeName);
});
localStorage.setItem('webbrain-theme', themeName);
};

applyTheme(initialTheme);
themeButtons.forEach((button) => {
button.addEventListener('click', () => applyTheme(button.dataset.theme || 'default'));
});
})();
</script>

</body>
</html>