* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #0F172A;
    --bg-light: #1E293B;
    --accent: #F97316;
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    --border: #334155;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
}

#app {
    width: 100%;
    max-width: 720px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 0 16px;
}

/* Header */
header {
    text-align: center;
    padding: 32px 0 16px;
    flex-shrink: 0;
}

.header-row {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#auth-bar {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.auth-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
}

.auth-name {
    color: var(--text-muted);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-link {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.8rem;
}

.auth-link:hover {
    text-decoration: underline;
}

.auth-link-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.auth-link-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.tier-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

.tier-badge.free {
    background: var(--border);
    color: var(--text-muted);
}

.tier-badge.pro {
    background: var(--accent);
    color: #000;
}

header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: var(--text);
}

header .accent {
    color: var(--accent);
}

header .tagline {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 4px;
}

.build-number {
    color: var(--border);
    font-size: 0.65rem;
    margin-top: 2px;
}

/* Auth Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 16px;
}

.modal-content {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    max-width: 400px;
    width: 100%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text);
}

.modal-content h2 {
    font-size: 1.25rem;
    margin-bottom: 4px;
    color: var(--text);
}

.modal-subtitle {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.auth-btn {
    width: 100%;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: opacity 0.2s;
}

.auth-btn:hover {
    opacity: 0.85;
}

.google-btn {
    background: #fff;
    border: 1px solid #ddd;
    color: #333;
}

.email-btn {
    background: var(--accent);
    border: none;
    color: #000;
}

.email-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-top: 1px solid var(--border);
}

#email-sign-in-form input {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 10px;
    outline: none;
}

#email-sign-in-form input:focus {
    border-color: var(--accent);
}

.auth-message {
    font-size: 0.8rem;
    margin-top: 12px;
    text-align: center;
}

.auth-message.hidden {
    display: none;
}

.auth-message.success {
    color: #22C55E;
}

.auth-message.error {
    color: #EF4444;
}

.auth-toggle {
    font-size: 0.8rem;
    text-align: center;
    margin-top: 12px;
    color: var(--text-muted);
}

.auth-toggle a {
    color: var(--accent);
    text-decoration: none;
}

.auth-toggle a:hover {
    text-decoration: underline;
}

/* Save status */
.save-status {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 8px;
    margin-bottom: 16px;
    text-align: center;
}

.save-status.hidden {
    display: none;
}

.save-status.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22C55E;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.save-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Chat */
#chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: 16px;
    min-height: 0;
    justify-content: flex-end;
}

#messages {
    overflow-y: auto;
    padding: 16px 0;
    flex-shrink: 1;
}

.message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: 12px;
    line-height: 1.5;
    font-size: 0.95rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin-bottom: 16px;
}

.message:last-child {
    margin-bottom: 0;
}

.message.assistant {
    align-self: flex-start;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}

.message.user {
    align-self: flex-end;
    background: var(--accent);
    color: #000;
    border-bottom-right-radius: 4px;
    margin-left: auto;
}

.file-badge {
    display: inline-block;
    background: rgba(0, 0, 0, 0.2);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-bottom: 6px;
}

.message.typing {
    align-self: flex-start;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
    color: var(--text-muted);
}

.typing-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0% { content: ''; }
    25% { content: '.'; }
    50% { content: '..'; }
    75% { content: '...'; }
}

/* File preview */
#file-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--bg-light);
    border: 1px solid var(--accent);
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 0.8rem;
    color: var(--accent);
}

#file-preview.hidden {
    display: none;
}

#file-preview-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#file-remove-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

#file-remove-btn:hover {
    color: var(--text);
}

/* Chat actions */
#chat-actions {
    display: flex;
    justify-content: flex-end;
    padding: 4px 0;
    flex-shrink: 0;
}

.chat-action-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.chat-action-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Input */
#input-area {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    flex-shrink: 0;
    padding: 8px 0;
}

#attach-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: all 0.2s;
}

#attach-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#attach-btn.has-file {
    border-color: var(--accent);
    color: var(--accent);
}

#user-input {
    flex: 1;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 16px;
    color: var(--text);
    font-size: 0.95rem;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    outline: none;
    transition: border-color 0.2s;
}

#user-input:focus {
    border-color: var(--accent);
}

#user-input::placeholder {
    color: var(--text-muted);
}

#send-btn {
    background: var(--accent);
    border: none;
    border-radius: 12px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #000;
    flex-shrink: 0;
    transition: opacity 0.2s;
}

#send-btn:hover {
    opacity: 0.85;
}

#send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Outputs */
#outputs-container {
    padding: 24px 0 32px;
}

#outputs-container.hidden {
    display: none;
}

.output-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.action-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--accent);
    color: #000;
}

.action-btn.primary {
    background: var(--accent);
    color: #000;
    font-weight: 600;
}

.action-btn.primary:hover {
    opacity: 0.85;
}

.generate-extras-btn {
    display: block;
    width: 100%;
    padding: 14px 24px;
    font-size: 1rem;
    margin-bottom: 24px;
    text-align: center;
}

.generate-extras-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

.output-block {
    margin-bottom: 24px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(249, 115, 22, 0.1);
    border-bottom: 1px solid var(--border);
}

.output-header h3 {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent);
}

.output-header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.ppt-btn {
    background: #22C55E;
    border: none;
    color: #fff;
    padding: 4px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.ppt-btn:hover {
    opacity: 0.85;
}

.ppt-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ppt-btn.generating {
    background: var(--text-muted);
}

.ppt-status {
    padding: 8px 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

.ppt-status.hidden {
    display: none;
}

.ppt-status.error {
    color: #EF4444;
}

.copy-btn {
    background: var(--accent);
    border: none;
    color: #000;
    padding: 4px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.copy-btn:hover {
    opacity: 0.85;
}

.copy-btn.copied {
    background: #22C55E;
    color: #fff;
}

.output-content {
    padding: 16px;
    font-size: 0.85rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text);
    max-height: 500px;
    overflow-y: auto;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

/* Mockup previews */
.mockup-frame {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.mockup-frame iframe {
    width: 100%;
    height: 600px;
    border: none;
    display: block;
}

.code-toggle {
    border-top: 1px solid var(--border);
}

.code-toggle summary {
    padding: 10px 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}

.code-toggle summary:hover {
    color: var(--accent);
}

.code-toggle .output-content {
    border-top: 1px solid var(--border);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Dashboard */
#dashboard-container {
    padding: 16px 0 32px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.idea-count {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.upgrade-link {
    color: var(--accent);
    text-decoration: none;
}

.upgrade-link:hover {
    text-decoration: underline;
}

.dashboard-loading,
.dashboard-empty {
    text-align: center;
    padding: 48px 0;
    color: var(--text-muted);
}

.dashboard-empty.hidden {
    display: none;
}

.ideas-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.idea-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 20px;
    transition: border-color 0.2s;
}

.idea-card:hover {
    border-color: var(--accent);
}

.idea-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.idea-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

.idea-status {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
}

.idea-status.draft {
    background: var(--border);
    color: var(--text-muted);
}

.idea-status.complete {
    background: rgba(34, 197, 94, 0.15);
    color: #22C55E;
}

.idea-domain {
    color: var(--accent);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.idea-meta {
    display: flex;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.idea-actions {
    display: flex;
    gap: 8px;
}

.action-btn.danger {
    border-color: #EF4444;
    color: #EF4444;
}

.action-btn.danger:hover {
    background: #EF4444;
    color: #fff;
}

/* Account */
#account-container {
    padding: 24px 0 32px;
    max-width: 480px;
    margin: 0 auto;
}

.account-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
}

.account-card h2 {
    font-size: 1.25rem;
    margin-bottom: 2px;
}

.text-muted {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.account-tier {
    margin: 20px 0;
}

.tier-display {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.upgrade-card {
    background: rgba(249, 115, 22, 0.05);
    border: 1px solid rgba(249, 115, 22, 0.2);
    border-radius: 8px;
    padding: 16px;
    margin-top: 12px;
}

.upgrade-card h3 {
    font-size: 1rem;
    margin-bottom: 4px;
    color: var(--accent);
}

.upgrade-card p {
    margin-bottom: 12px;
}

.account-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* Mobile */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.5rem;
    }

    .message {
        max-width: 92%;
    }

    #app {
        padding: 0 12px;
    }

    .auth-user {
        gap: 6px;
    }

    .auth-name {
        display: none;
    }

    #auth-bar {
        position: static;
        transform: none;
        margin-left: auto;
    }

    .header-row {
        justify-content: space-between;
    }
}