/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* iOS Colors */
    --primary-blue: #007AFF;
    --primary-blue-dark: #0051D5;
    --message-sent: #007AFF;
    --message-received: #E9E9EB;
    --message-text-sent: #FFFFFF;
    --message-text-received: #000000;
    --background: #FFFFFF;
    --header-bg: #F6F6F6;
    --input-bg: #FFFFFF;
    --border-color: #E5E5EA;
    --text-primary: #000000;
    --text-secondary: #8E8E93;
    --avatar-bg: #007AFF;
    --avatar-text: #FFFFFF;

    /* Spacing */
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --safe-area-left: env(safe-area-inset-left);
    --safe-area-right: env(safe-area-inset-right);
}

@media (prefers-color-scheme: dark) {
    :root {
        --message-sent: #0A84FF;
        --message-received: #3A3A3C;
        --message-text-received: #FFFFFF;
        --background: #000000;
        --header-bg: #1C1C1E;
        --input-bg: #1C1C1E;
        --border-color: #38383A;
        --text-primary: #FFFFFF;
        --text-secondary: #8E8E93;
        --avatar-bg: #0A84FF;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    height: 100vh;
    width: 100vw;
    position: fixed;
}

/* Chat Container */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 100%;
    margin: 0 auto;
    background: var(--background);
}

/* Header */
.chat-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    padding: calc(12px + var(--safe-area-top)) 16px 12px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
    flex-shrink: 0;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.back-button,
.info-button {
    background: none;
    border: none;
    color: var(--primary-blue);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    transition: opacity 0.2s;
}

.back-button:active,
.info-button:active {
    opacity: 0.5;
}

.contact-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--avatar-bg);
    color: var(--avatar-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
    overflow: hidden;
}

.contact-name {
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.contact-status {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 1px;
}

/* Messages Container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    background: var(--background);
    min-height: 0;
}

.messages-wrapper {
    padding: 16px;
    padding-bottom: 8px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 100%;
}

/* Message Groups */
.message-group {
    display: flex;
    gap: 8px;
    animation: messageSlideIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-group.received {
    justify-content: flex-start;
}

.message-group.sent {
    justify-content: flex-end;
}

.message-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--avatar-bg);
    color: var(--avatar-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
    align-self: flex-end;
    margin-bottom: 2px;
}

.messages {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-width: 70%;
    min-width: 0;
}

.message {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.message-bubble {
    padding: 10px 14px;
    border-radius: 18px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.4;
    font-size: 16px;
    position: relative;
}

.message-group.received .message-bubble {
    background: var(--message-received);
    color: var(--message-text-received);
    border-bottom-left-radius: 4px;
}

.message-group.received .messages .message:not(:first-child) .message-bubble {
    border-bottom-left-radius: 18px;
}

.message-group.received .messages .message:last-child .message-bubble {
    border-bottom-left-radius: 4px;
}

.message-group.sent .message-bubble {
    background: var(--message-sent);
    color: var(--message-text-sent);
    border-bottom-right-radius: 4px;
}

.message-group.sent .messages .message:not(:first-child) .message-bubble {
    border-bottom-right-radius: 18px;
}

.message-group.sent .messages .message:last-child .message-bubble {
    border-bottom-right-radius: 4px;
}

.message-time {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 0 4px;
    margin-top: 2px;
}

.message-group.sent .message-time {
    text-align: right;
}

/* Typing Indicator */
.typing-bubble {
    background: var(--message-received);
    padding: 10px 14px;
    display: flex;
    gap: 4px;
    align-items: center;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: typingDot 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingDot {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-4px);
    }
}

/* Input Container */
.input-container {
    padding: 8px;
    background: var(--background);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    padding-bottom: calc(8px + var(--safe-area-bottom));
}

/* Extra padding for browser mode (Safari with bottom URL bar) */
@media all and (display-mode: browser) {
    .input-container {
        padding-bottom: calc(30px + var(--safe-area-bottom));
    }
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 6px 8px;
}

.input-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    transition: opacity 0.2s;
}

.input-button:active {
    opacity: 0.5;
}

.send-button {
    background: var(--primary-blue);
    border: none;
    color: white;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    transition: all 0.2s;
}

.send-button:active {
    background: var(--primary-blue-dark);
    transform: scale(0.95);
}

.input-field-wrapper {
    flex: 1;
    min-width: 0;
    cursor: text;
    display: flex;
    align-items: center;
}

.message-input {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    resize: none;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.4;
    color: var(--text-primary);
    max-height: 100px;
    overflow-y: auto;
    padding: 6px 8px;
    -webkit-overflow-scrolling: touch;
}

.message-input::placeholder {
    color: var(--text-secondary);
}

/* Desktop Responsive */
@media (min-width: 768px) {
    .chat-container {
        max-width: 768px;
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
    }

    .messages {
        max-width: 60%;
    }

    .message-bubble:hover {
        cursor: default;
    }

    .input-button:hover,
    .back-button:hover,
    .info-button:hover {
        opacity: 0.7;
    }

    .send-button:hover {
        background: var(--primary-blue-dark);
    }
}

/* Very wide screens */
@media (min-width: 1024px) {
    .messages {
        max-width: 50%;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
button:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.message-input:focus {
    outline: none;
}

/* Error bubbles for stderr */
.error-bubble {
    background: #FF3B30 !important;
    color: white !important;
}

@media (prefers-color-scheme: dark) {
    .error-bubble {
        background: #FF453A !important;
    }
}

/* Job UI Styles */
.job-bubble {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background: var(--message-received);
    max-width: 100%;
}

.job-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.job-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.job-status.running {
    color: var(--primary-blue);
}

.job-status.success {
    color: #34C759;
}

.job-status.failed {
    color: #FF3B30;
}

.job-status.cancelled {
    color: #FF9500;
}

@media (prefers-color-scheme: dark) {
    .job-status.success {
        color: #30D158;
    }

    .job-status.failed {
        color: #FF453A;
    }

    .job-status.cancelled {
        color: #FF9F0A;
    }
}

.cancel-button {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    color: var(--text-secondary);
    font-size: 18px;
    opacity: 0.6;
    transition: opacity 0.2s, color 0.2s;
    -webkit-tap-highlight-color: transparent;
    line-height: 1;
}

.cancel-button:hover {
    opacity: 1;
    color: #FF3B30;
}

@media (prefers-color-scheme: dark) {
    .cancel-button:hover {
        color: #FF453A;
    }
}

.cancel-button:active {
    opacity: 0.5;
}

.job-output {
    padding: 12px;
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 13px;
    max-height: 400px;
    overflow-y: auto;
    background: var(--input-bg);
    white-space: pre-wrap;
    word-break: break-word;
}

.job-output::-webkit-scrollbar {
    width: 6px;
}

.job-output::-webkit-scrollbar-track {
    background: transparent;
}

.job-output::-webkit-scrollbar-thumb {
    background: var(--text-secondary);
    border-radius: 3px;
    opacity: 0.3;
}

.job-cursor {
    display: inline-block;
    width: 8px;
    height: 14px;
    background: var(--text-primary);
    margin-left: 2px;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.job-footer {
    padding: 6px 12px;
    font-size: 12px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    background: var(--header-bg);
}

.job-footer.success {
    color: #34C759;
}

.job-footer.failed {
    color: #FF3B30;
}

.job-footer.cancelled {
    color: #FF9500;
}

@media (prefers-color-scheme: dark) {
    .job-footer.success {
        color: #30D158;
    }

    .job-footer.failed {
        color: #FF453A;
    }

    .job-footer.cancelled {
        color: #FF9F0A;
    }
}

/* Upgrade animation */
.upgrading {
    animation: upgrade 0.3s ease;
}

@keyframes upgrade {
    from {
        transform: scale(0.98);
        opacity: 0.8;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}