:root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #FF4500; /* Reddit Orangeish */
    --primary-hover: #ff571a;
    --success: #10b981;
    --success-hover: #059669;
    --border: #334155;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 { margin: 0; font-size: 2rem; }
p { color: var(--text-muted); margin: 5px 0 0 0; }
a { color: var(--primary); text-decoration: none; }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: opacity 0.3s ease;
}

.hidden { display: none !important; }

.input-group { display: flex; flex-direction: column; gap: 8px; }
label { font-size: 0.9rem; font-weight: 600; color: var(--text-muted); }
input, select {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 12px;
    border-radius: 8px;
    font-size: 1rem;
}
input:focus, select:focus { outline: 2px solid var(--primary); border-color: transparent; }

button {
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.primary-btn { background: var(--primary); color: white; }
.primary-btn:hover { background: var(--primary-hover); }

.success-btn { background: var(--success); color: white; }
.success-btn:hover { background: var(--success-hover); }

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.tab-btn {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 8px 16px;
    cursor: pointer;
    font-weight: 600;
    border-radius: 6px;
}

.tab-btn.active {
    background: var(--border);
    color: var(--text);
}

.tab-btn:hover {
    color: var(--text);
}

.mode-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.project-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.thumb { width: 48px; height: 48px; border-radius: 6px; object-fit: cover; }
h2 { margin: 0; font-size: 1.2rem; }

.error-msg {
    color: #ef4444;
    font-size: 0.9rem;
    background: rgba(239, 68, 68, 0.1);
    padding: 10px;
    border-radius: 6px;
}

.overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.spinner {
    width: 40px; height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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