/* Handoff – two-panel layout */
:root {
    --handoff-bg: #0f0f14;
    --handoff-panel: #18181f;
    --handoff-border: #2a2a35;
    --handoff-text: #e4e4e7;
    --handoff-muted: #71717a;
    --handoff-accent: #6366f1;
    --handoff-accent-hover: #818cf8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--handoff-bg);
    color: var(--handoff-text);
    min-height: 100vh;
}

.handoff-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.handoff-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--handoff-border);
    flex-shrink: 0;
}

.back-link {
    color: var(--handoff-muted);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-bottom: 0.5rem;
}

.back-link:hover {
    color: var(--handoff-accent);
}

.handoff-header h1 {
    margin: 0 0 0.25rem 0;
    font-size: 2.75rem;
    font-weight: 800;
    font-family: 'Syne', system-ui, sans-serif;
    letter-spacing: -0.02em;
}

.tagline {
    margin: 0;
    font-size: 0.9rem;
    color: var(--handoff-muted);
}

.two-panel {
    flex: 1;
    display: grid;
    grid-template-columns: 400px 1fr;
    min-height: 0;
}

@media (max-width: 900px) {
    .two-panel {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
}

.panel {
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-right: 1px solid var(--handoff-border);
}

.preview-panel {
    border-right: none;
}

.panel-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--handoff-border);
    flex-shrink: 0;
}

.panel-header h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-header h2 i {
    color: var(--handoff-accent);
}

.panel-header-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.header-actions {
    flex-shrink: 0;
}

.action-btn {
    padding: 0.4rem 0.85rem;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font: inherit;
}

.deploy-btn {
    background: var(--handoff-accent);
    color: #fff;
}

.deploy-btn:hover {
    background: var(--handoff-accent-hover);
}

.deploy-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.typing-indicator p {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0;
    margin: 0;
}

.typing-indicator .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--handoff-text);
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-indicator .dot:nth-child(1) { animation-delay: 0s; }
.typing-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

.deploy-result {
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--handoff-border);
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.deploy-result.hidden {
    display: none !important;
}

.deploy-success {
    margin: 0;
    font-size: 0.9rem;
    color: var(--handoff-text);
}

.deploy-success i {
    color: #22c55e;
}

.deploy-url {
    color: var(--handoff-accent);
    text-decoration: none;
    font-size: 0.9rem;
    word-break: break-all;
}

.deploy-url:hover {
    text-decoration: underline;
}

.copy-btn {
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--handoff-border);
    border-radius: 6px;
    background: var(--handoff-bg);
    color: var(--handoff-text);
    font-size: 0.8rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.copy-btn:hover {
    border-color: var(--handoff-accent);
}

/* Chat */
.chat-panel {
    background: var(--handoff-panel);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    max-width: 95%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    line-height: 1.5;
}

.message p {
    margin: 0;
    font-size: 0.95rem;
}

.message.user {
    align-self: flex-end;
    background: var(--handoff-accent);
    color: #fff;
}

.message.assistant {
    align-self: flex-start;
    background: var(--handoff-border);
    color: var(--handoff-text);
}

.chat-input-wrap {
    padding: 1rem;
    border-top: 1px solid var(--handoff-border);
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

#chatInput {
    flex: 1;
    min-height: 44px;
    max-height: 120px;
    padding: 0.65rem 0.9rem;
    border: 1px solid var(--handoff-border);
    border-radius: 10px;
    background: var(--handoff-bg);
    color: var(--handoff-text);
    font: inherit;
    resize: none;
}

#chatInput:focus {
    outline: none;
    border-color: var(--handoff-accent);
}

.send-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 10px;
    background: var(--handoff-accent);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--handoff-accent-hover);
}

/* Preview */
.preview-panel {
    background: var(--handoff-bg);
}

.edit-mode-btn {
    background: transparent;
    border: 1px solid var(--handoff-border);
    color: var(--handoff-text);
}

.edit-mode-btn:hover {
    border-color: var(--handoff-accent);
    color: var(--handoff-accent);
}

.edit-mode-btn.active {
    background: var(--handoff-accent);
    border-color: var(--handoff-accent);
    color: #fff;
}

.edit-selection-bar {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--handoff-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.edit-selection-bar.hidden {
    display: none !important;
}

.edit-label {
    font-size: 0.85rem;
    color: var(--handoff-muted);
}

.edit-selection-bar input {
    flex: 1;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--handoff-border);
    border-radius: 6px;
    background: var(--handoff-bg);
    color: var(--handoff-text);
    font-size: 0.9rem;
}

.edit-selection-bar input:focus {
    outline: none;
    border-color: var(--handoff-accent);
}

.iframe-wrap {
    flex: 1;
    min-height: 0;
    padding: 1rem;
}

.iframe-wrap {
    display: flex;
    flex-direction: column;
}

#previewFrame {
    flex: 1;
    width: 100%;
    min-height: 300px;
    border: 1px solid var(--handoff-border);
    border-radius: 8px;
    background: var(--handoff-bg);
}