/* Multi-AI Mini App - Telegram Theme v2 */

:root {
    /* Default light theme - will be overridden by Telegram */
    --tg-bg: #ffffff;
    --tg-text: #000000;
    --tg-hint: #999999;
    --tg-link: #2481cc;
    --tg-button: #2481cc;
    --tg-button-text: #ffffff;
    --tg-secondary-bg: #f4f4f5;

    /* AI Colors */
    --claude-color: #8B5CF6;
    --gpt-color: #10B981;
    --gemini-color: #3B82F6;

    /* Spacing */
    --radius: 16px;
    --radius-sm: 8px;
    --gap: 12px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.4;
    background: var(--tg-bg);
    color: var(--tg-text);
    -webkit-font-smoothing: antialiased;
}

#app {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--tg-secondary-bg);
    flex-shrink: 0;
}

.header h1 {
    font-size: 17px;
    font-weight: 600;
}

.icon-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.15s ease;
    color: var(--tg-text);
}

.icon-btn:active {
    background: var(--tg-hint);
    opacity: 0.3;
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--tg-secondary-bg);
    border-bottom: 0.5px solid var(--tg-hint);
    flex-shrink: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    flex: 1;
    min-width: 80px;
    padding: 12px 8px;
    border: none;
    background: transparent;
    font-size: 13px;
    font-weight: 500;
    color: var(--tg-hint);
    cursor: pointer;
    transition: color 0.2s ease;
    position: relative;
}

.tab.active {
    color: var(--tg-button);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--tg-button);
    border-radius: 2px 2px 0 0;
}

/* Tab Content */
.tab-content {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow: hidden;
    padding: var(--gap);
}

.tab-content.active {
    display: flex;
}

/* Selectors */
.model-selector {
    display: flex;
    gap: 8px;
    margin-bottom: var(--gap);
    flex-shrink: 0;
}

.model-selector select {
    flex: 1;
    padding: 10px 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    font-size: 14px;
    font-weight: 500;
    appearance: none;
    cursor: pointer;
}

/* Messages Container */
.messages {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    -webkit-overflow-scrolling: touch;
}

/* Message Bubbles */
.message {
    padding: 10px 14px;
    border-radius: var(--radius);
    max-width: 85%;
    word-wrap: break-word;
    white-space: pre-wrap;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    background: var(--tg-button);
    color: var(--tg-button-text);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.assistant {
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.message.claude { border-left: 3px solid var(--claude-color); }
.message.gpt { border-left: 3px solid var(--gpt-color); }
.message.gemini { border-left: 3px solid var(--gemini-color); }

.message-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
    font-size: 13px;
    font-weight: 600;
    opacity: 0.9;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: var(--tg-secondary-bg);
    border-radius: var(--radius);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--tg-hint);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }
.typing-indicator span:nth-child(3) { animation-delay: 0s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

/* Input Area */
.input-area {
    display: flex;
    gap: 8px;
    padding: 12px 0;
    flex-shrink: 0;
    align-items: flex-end;
}

.input-area textarea {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: 20px;
    resize: none;
    font-size: 15px;
    font-family: inherit;
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    max-height: 120px;
    min-height: 44px;
    line-height: 1.4;
    outline: none;
    transition: background 0.15s ease;
}

.input-area textarea::placeholder {
    color: var(--tg-hint);
}

.input-area textarea:focus {
    background: var(--tg-secondary-bg);
}

.send-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--tg-button);
    color: var(--tg-button-text);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.1s ease, opacity 0.15s ease;
}

.send-btn:active {
    transform: scale(0.92);
}

.send-btn:disabled {
    opacity: 0.5;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--gap);
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--tg-text);
}

.form-group textarea,
.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    outline: none;
}

.form-group textarea::placeholder,
.form-group input::placeholder {
    color: var(--tg-hint);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
    line-height: 1.4;
}

/* Primary Button */
.primary-btn {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius);
    background: var(--tg-button);
    color: var(--tg-button-text);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s ease, transform 0.1s ease;
}

.primary-btn:active {
    transform: scale(0.98);
}

.primary-btn:disabled {
    opacity: 0.5;
}

/* Chain Buttons */
.chain-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: var(--gap);
}

.chain-btn {
    padding: 14px 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.chain-btn.active {
    background: var(--tg-button);
    color: var(--tg-button-text);
}

/* Debate */
.debate-setup, .debate-arena {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.debate-setup h2 {
    font-size: 20px;
    margin-bottom: 4px;
}

.debate-setup p {
    color: var(--tg-hint);
    margin-bottom: 16px;
}

.debate-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--tg-secondary-bg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--gap);
    font-weight: 600;
}

.debate-controls {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    padding-top: var(--gap);
}

.debate-controls button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
}

/* More Menu */
.more-menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--tg-secondary-bg);
    color: var(--tg-text);
    font-size: 15px;
    cursor: pointer;
    text-align: left;
    transition: opacity 0.15s ease;
}

.menu-item:active {
    opacity: 0.7;
}

.menu-icon {
    font-size: 22px;
    width: 28px;
    text-align: center;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 1000;
    animation: fadeInModal 0.2s ease;
}

@keyframes fadeInModal {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--tg-bg);
    border-radius: var(--radius) var(--radius) 0 0;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp 0.25s ease;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 0.5px solid var(--tg-hint);
    position: sticky;
    top: 0;
    background: var(--tg-bg);
}

.modal-header h2 {
    font-size: 17px;
    font-weight: 600;
}

.close-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tg-secondary-bg);
    border: none;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    color: var(--tg-text);
}

.modal-body {
    padding: 16px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 0.5px solid var(--tg-hint);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item label {
    font-size: 15px;
}

/* Loading Overlay */
.loading {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.loading span {
    color: white;
    font-size: 15px;
    font-weight: 500;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 0;
    height: 0;
}

/* Safe area for notched devices */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .input-area {
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
    }
}