.aihg-wrapper {
    --aihg-bg: transparent;
    --aihg-card-bg: #14141c;
    --aihg-card-border: #262633;
    --aihg-text: #ffffff;
    --aihg-subtext: #9d9db0;
    --aihg-input-bg: #1d1d29;
    --aihg-input-border: #303042;
    --aihg-input-text: #f0f0f5;
    --aihg-accent: #7c5cff;
    --aihg-accent-2: #ff5c9d;
    --aihg-hook-bg: #1d1d29;
    --aihg-hook-border: #303042;
    --aihg-btn-secondary-bg: #262633;
    --aihg-btn-secondary-border: #363648;
    --aihg-btn-secondary-text: #d8d8e6;

    width: 100%;
    max-width: 100%;
    margin: 30px 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    box-sizing: border-box;
}

.aihg-wrapper.aihg-light {
    --aihg-card-bg: #ffffff;
    --aihg-card-border: #e4e4ec;
    --aihg-text: #16161f;
    --aihg-subtext: #6b6b7d;
    --aihg-input-bg: #f7f7fb;
    --aihg-input-border: #e0e0ea;
    --aihg-input-text: #16161f;
    --aihg-hook-bg: #f7f7fb;
    --aihg-hook-border: #e4e4ec;
    --aihg-btn-secondary-bg: #f0f0f6;
    --aihg-btn-secondary-border: #dcdce6;
    --aihg-btn-secondary-text: #2e2e3d;
}

.aihg-wrapper * { box-sizing: border-box; }

.aihg-card {
    width: 100%;
    background: var(--aihg-card-bg);
    border-radius: 16px;
    padding: 30px 32px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.18);
    border: 1px solid var(--aihg-card-border);
    transition: background 0.2s ease, border-color 0.2s ease;
}

.aihg-topbar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.aihg-title {
    color: var(--aihg-text);
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 4px;
}

.aihg-subtitle {
    color: var(--aihg-subtext);
    font-size: 14px;
    margin: 0;
}

.aihg-theme-btn {
    background: var(--aihg-btn-secondary-bg);
    border: 1px solid var(--aihg-btn-secondary-border);
    border-radius: 8px;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    flex-shrink: 0;
}

#aihg-theme-toggle .aihg-theme-icon::before {
    content: "🌙";
    font-size: 20px !important;
    line-height: 1;
    display: inline-block;
}

.aihg-wrapper.aihg-light #aihg-theme-toggle .aihg-theme-icon::before {
    content: "☀️";
}

.aihg-options-row {
    display: flex;
    gap: 14px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.aihg-option {
    flex: 1;
    min-width: 180px;
}

.aihg-option label {
    display: block;
    color: var(--aihg-subtext);
    font-size: 12.5px;
    font-weight: 600;
    margin-bottom: 6px;
}

.aihg-option select {
    width: 100%;
    background: var(--aihg-input-bg);
    border: 1px solid var(--aihg-input-border);
    color: var(--aihg-input-text);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
}

.aihg-textarea {
    width: 100%;
    background: var(--aihg-input-bg);
    border: 1px solid var(--aihg-input-border);
    border-radius: 10px;
    color: var(--aihg-input-text);
    padding: 14px;
    font-size: 14px;
    line-height: 1.5;
    resize: vertical;
    min-height: 140px;
    margin-top: 16px;
}

.aihg-textarea:focus {
    outline: none;
    border-color: var(--aihg-accent);
}

.aihg-charcount {
    text-align: right;
    font-size: 12.5px;
    color: var(--aihg-subtext);
    margin-top: 6px;
}

.aihg-charcount.aihg-limit-close { color: #ff9f43; }
.aihg-charcount.aihg-limit-hit { color: #ff6b6b; font-weight: 600; }

.aihg-button {
    display: block;
    width: 100%;
    margin-top: 14px;
    padding: 13px 20px;
    background: linear-gradient(90deg, var(--aihg-accent), var(--aihg-accent-2));
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.1s ease;
}

.aihg-button:hover { opacity: 0.92; }
.aihg-button:active { transform: scale(0.99); }
.aihg-button:disabled { opacity: 0.5; cursor: not-allowed; }

.aihg-secondary-btn {
    background: var(--aihg-btn-secondary-bg);
    color: var(--aihg-btn-secondary-text);
    border: 1px solid var(--aihg-btn-secondary-border);
    border-radius: 8px;
    padding: 9px 16px;
    font-size: 13.5px;
    cursor: pointer;
}

.aihg-secondary-btn:hover { opacity: 0.9; }

.aihg-link-btn {
    background: none;
    border: none;
    color: var(--aihg-accent);
    font-size: 13px;
    cursor: pointer;
    padding: 0;
}

.aihg-error {
    margin-top: 14px;
    color: #ff6b6b;
    font-size: 13.5px;
    background: rgba(255,107,107,0.08);
    border: 1px solid rgba(255,107,107,0.25);
    padding: 10px 12px;
    border-radius: 8px;
}

.aihg-loading {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--aihg-subtext);
    font-size: 14px;
}

.aihg-spinner {
    width: 18px;
    height: 18px;
    border: 2.5px solid var(--aihg-input-border);
    border-top-color: var(--aihg-accent);
    border-radius: 50%;
    animation: aihg-spin 0.7s linear infinite;
}

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

.aihg-results {
    margin-top: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.aihg-hook-card {
    background: var(--aihg-hook-bg);
    border: 1px solid var(--aihg-hook-border);
    border-radius: 10px;
    padding: 14px 16px;
}

.aihg-hook-number {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--aihg-accent);
    font-weight: 700;
    margin-bottom: 6px;
}

.aihg-hook-text {
    color: var(--aihg-text);
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 10px;
}

.aihg-copy-btn {
    background: var(--aihg-btn-secondary-bg);
    color: var(--aihg-btn-secondary-text);
    border: 1px solid var(--aihg-btn-secondary-border);
    border-radius: 6px;
    padding: 5px 12px;
    font-size: 12.5px;
    cursor: pointer;
}

.aihg-copy-btn:hover { opacity: 0.9; }

.aihg-results-actions {
    margin-top: 14px;
}

.aihg-history-section {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--aihg-card-border);
}

.aihg-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.aihg-history-header h4 {
    margin: 0;
    color: var(--aihg-text);
    font-size: 14px;
    font-weight: 700;
}

.aihg-history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 320px;
    overflow-y: auto;
}

.aihg-history-empty {
    color: var(--aihg-subtext);
    font-size: 13px;
}

.aihg-history-item {
    background: var(--aihg-hook-bg);
    border: 1px solid var(--aihg-hook-border);
    border-radius: 8px;
    padding: 10px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.aihg-history-item:hover { border-color: var(--aihg-accent); }

.aihg-history-meta {
    flex: 1;
    min-width: 0;
}

.aihg-history-snippet {
    color: var(--aihg-text);
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.aihg-history-tags {
    color: var(--aihg-subtext);
    font-size: 11px;
    margin-top: 2px;
}

.aihg-history-delete {
    background: none;
    border: none;
    color: var(--aihg-subtext);
    font-size: 14px;
    cursor: pointer;
    flex-shrink: 0;
}

.aihg-history-delete:hover { color: #ff6b6b; }

@media (max-width: 480px) {
    .aihg-card { padding: 22px 18px; }
    .aihg-options-row { flex-direction: column; }
}