/* ===== DevAssistant Styles ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

:root {
    --bg: #0a192f;
    --surface: #112240;
    --surface2: #1d3461;
    --surface3: #233554;
    --border: #1e3a5f;
    --border-hover: #2d5a8e;
    --text: #ccd6f6;
    --text2: #8892b0;
    --text3: #64748b;
    --green: #64ffda;
    --green-tint: rgba(100, 255, 218, .07);
    --green-bg: rgba(100, 255, 218, .12);
    --blue: #57cbff;
    --purple: #c792ea;
    --red: #ff5370;
    --orange: #f78c6c;
    --yellow: #ffcb6b;
    --user-bg: #1a365d;
    --ai-bg: #112240;
    --r: 8px;
    --r-lg: 12px;
    --r-xl: 16px;
    --t: .2s ease;
    --font: 'Inter', system-ui, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased
}

a {
    color: var(--green);
    text-decoration: none
}

a:hover {
    text-decoration: underline
}

::selection {
    background: rgba(100, 255, 218, .15);
    color: var(--text)
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px
}

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

::-webkit-scrollbar-thumb {
    background: var(--surface3);
    border-radius: 3px
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover)
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(2, 12, 27, .92);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 1;
    transition: opacity .3s
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none
}

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2.5rem;
    max-width: 480px;
    width: 100%;
    text-align: center;
    animation: modalIn .4s ease
}

.modal-icon {
    font-size: 3rem;
    margin-bottom: 1rem
}

.modal h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: .5rem
}

.modal>p {
    color: var(--text2);
    font-size: .9rem;
    line-height: 1.6;
    margin-bottom: 1.5rem
}

.modal-steps {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    margin-bottom: 1.5rem;
    text-align: left
}

.step {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem .75rem;
    background: var(--green-tint);
    border-radius: var(--r);
    font-size: .85rem;
    color: var(--text)
}

.step-num {
    width: 24px;
    height: 24px;
    background: var(--green);
    color: var(--bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .75rem;
    flex-shrink: 0
}

.step a {
    font-weight: 600
}

.modal-input-wrap {
    display: flex;
    gap: .5rem;
    margin-bottom: 1rem
}

.modal-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: .75rem 1rem;
    color: var(--text);
    font-family: var(--mono);
    font-size: .85rem;
    outline: none;
    transition: border var(--t)
}

.modal-input:focus {
    border-color: var(--green)
}

.modal-eye {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: .75rem;
    color: var(--text2);
    cursor: pointer;
    transition: var(--t)
}

.modal-eye:hover {
    color: var(--green);
    border-color: var(--green)
}

.modal-btn {
    width: 100%;
    padding: .875rem;
    font-size: .95rem
}

.modal-note {
    color: var(--text3);
    font-size: .75rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .35rem
}

/* Provider selector in modal */
.modal-provider-row {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin-bottom: 1rem
}

.modal-provider-row label {
    color: var(--text2);
    font-size: .85rem;
    font-weight: 600;
    white-space: nowrap
}

.modal-provider-select {
    flex: 1;
    padding: .5rem .75rem;
    font-size: .85rem
}

.step-tip {
    background: rgba(100, 255, 218, .08) !important;
    border: 1px solid rgba(100, 255, 218, .15);
    color: var(--green) !important;
    font-weight: 500
}

.step-tip i {
    color: var(--green)
}

.step-warn {
    background: rgba(255, 203, 107, .08) !important;
    border: 1px solid rgba(255, 203, 107, .15);
    color: var(--yellow) !important;
    font-weight: 500
}

.step-warn i {
    color: var(--yellow)
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--green);
    color: var(--bg);
    border: none;
    border-radius: var(--r);
    padding: .625rem 1.25rem;
    font-weight: 700;
    font-size: .85rem;
    cursor: pointer;
    transition: all var(--t);
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font)
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(100, 255, 218, .25);
    transform: translateY(-1px)
}

.btn-primary:active {
    transform: translateY(0)
}

.icon-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--r);
    color: var(--text2);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--t);
    font-size: .85rem
}

.icon-btn:hover {
    color: var(--green);
    border-color: var(--green)
}

/* ===== APP LAYOUT ===== */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .5rem 1rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    height: 52px;
    flex-shrink: 0;
    z-index: 10
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: .75rem
}

.back-link {
    color: var(--text2);
    font-size: 1rem;
    transition: var(--t);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--r)
}

.back-link:hover {
    color: var(--green);
    text-decoration: none
}

.logo {
    display: flex;
    align-items: center;
    gap: .5rem
}

.logo-icon {
    font-size: 1.25rem
}

.logo-text {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -.02em
}

.logo-badge {
    background: linear-gradient(135deg, var(--green), var(--blue));
    color: var(--bg);
    font-size: .6rem;
    font-weight: 800;
    padding: .125rem .375rem;
    border-radius: 4px;
    letter-spacing: .05em
}

/* Mode Selector */
.mode-selector {
    display: flex;
    gap: .25rem;
    background: var(--bg);
    padding: 3px;
    border-radius: var(--r);
    border: 1px solid var(--border)
}

.mode-btn {
    background: none;
    border: none;
    color: var(--text2);
    padding: .375rem .75rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: .75rem;
    font-weight: 600;
    font-family: var(--font);
    display: flex;
    align-items: center;
    gap: .35rem;
    transition: var(--t);
    white-space: nowrap
}

.mode-btn:hover {
    color: var(--text)
}

.mode-btn.active {
    background: var(--green-tint);
    color: var(--green)
}

/* ===== WORKSPACE ===== */
.workspace {
    display: flex;
    flex: 1;
    overflow: hidden
}

/* Panel */
.panel {
    display: flex;
    flex-direction: column;
    overflow: hidden
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .5rem 1rem;
    background: rgba(17, 34, 64, .6);
    border-bottom: 1px solid var(--border);
    height: 40px;
    flex-shrink: 0
}

.panel-title {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text2);
    display: flex;
    align-items: center;
    gap: .5rem
}

.panel-title i {
    color: var(--green);
    font-size: .75rem
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: .5rem
}

.lang-select {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: .3rem .5rem;
    font-size: .75rem;
    font-family: var(--mono);
    cursor: pointer;
    outline: none
}

.lang-select:focus {
    border-color: var(--green)
}

.panel-btn {
    background: var(--green);
    color: var(--bg);
    border: none;
    border-radius: 6px;
    padding: .35rem .75rem;
    font-size: .75rem;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--font);
    display: flex;
    align-items: center;
    gap: .35rem;
    transition: var(--t)
}

.panel-btn:hover {
    box-shadow: 0 2px 12px rgba(100, 255, 218, .25)
}

/* Editor */
.editor-panel {
    width: 45%;
    min-width: 250px
}

.editor-wrap {
    flex: 1;
    overflow: hidden
}

.editor-wrap .CodeMirror {
    height: 100% !important;
    background: var(--bg) !important;
    font-family: var(--mono);
    font-size: .875rem;
    line-height: 1.6
}

.CodeMirror-gutters {
    background: var(--bg) !important;
    border-right: 1px solid var(--border) !important
}

.CodeMirror-linenumber {
    color: var(--text3) !important
}

.CodeMirror-cursor {
    border-left-color: var(--green) !important
}

.CodeMirror-selected {
    background: rgba(100, 255, 218, .08) !important
}

.CodeMirror-matchingbracket {
    color: var(--green) !important;
    text-decoration: underline
}

/* Resize Handle */
.resize-handle {
    width: 6px;
    background: var(--border);
    cursor: col-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--t);
    flex-shrink: 0;
    position: relative
}

.resize-handle:hover,
.resize-handle.dragging {
    background: var(--green)
}

.resize-dots {
    display: flex;
    flex-direction: column;
    gap: 3px
}

.resize-dots span {
    width: 3px;
    height: 3px;
    background: var(--text3);
    border-radius: 50%
}

.resize-handle:hover .resize-dots span {
    background: var(--bg)
}

/* ===== CHAT ===== */
.chat-panel {
    flex: 1;
    min-width: 300px
}

.chat-mode-label {
    font-size: .7rem;
    color: var(--text3);
    font-weight: 500;
    margin-left: .5rem;
    padding: .15rem .4rem;
    background: var(--green-tint);
    border-radius: 4px;
    color: var(--green)
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: .75rem
}

/* Messages */
.message {
    display: flex;
    gap: .75rem;
    animation: msgIn .3s ease
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--r);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .9rem;
    flex-shrink: 0;
    margin-top: 2px
}

.ai-message .message-avatar {
    background: var(--green-tint)
}

.user-message .message-avatar {
    background: var(--user-bg)
}

.user-message {
    flex-direction: row-reverse
}

.message-content {
    max-width: 85%;
    min-width: 0
}

.message-text {
    padding: .75rem 1rem;
    border-radius: var(--r-lg);
    font-size: .875rem;
    line-height: 1.7;
    word-wrap: break-word;
    overflow-wrap: break-word
}

.ai-message .message-text {
    background: var(--ai-bg);
    border: 1px solid var(--border);
    color: var(--text)
}

.user-message .message-text {
    background: var(--user-bg);
    color: var(--text);
    border: 1px solid rgba(29, 52, 97, .5)
}

/* Markdown in messages */
.message-text h1,
.message-text h2,
.message-text h3 {
    color: var(--text);
    margin: 1rem 0 .5rem;
    font-weight: 700
}

.message-text h1 {
    font-size: 1.25rem
}

.message-text h2 {
    font-size: 1.1rem
}

.message-text h3 {
    font-size: 1rem
}

.message-text p {
    margin-bottom: .5rem
}

.message-text p:last-child {
    margin-bottom: 0
}

.message-text ul,
.message-text ol {
    padding-left: 1.25rem;
    margin-bottom: .5rem
}

.message-text li {
    margin-bottom: .25rem
}

.message-text strong {
    color: var(--text);
    font-weight: 600
}

.message-text code {
    font-family: var(--mono);
    font-size: .8rem;
    background: rgba(100, 255, 218, .06);
    color: var(--green);
    padding: .15rem .35rem;
    border-radius: 4px
}

.message-text pre {
    margin: .75rem 0;
    border-radius: var(--r);
    overflow: hidden;
    position: relative
}

.message-text pre code {
    display: block;
    padding: 1rem;
    background: var(--bg) !important;
    color: var(--text) !important;
    font-size: .8rem;
    line-height: 1.6;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--r)
}

.message-text a {
    color: var(--green)
}

.message-text blockquote {
    border-left: 3px solid var(--green);
    padding-left: .75rem;
    margin: .5rem 0;
    color: var(--text2);
    font-style: italic
}

/* Welcome */
.welcome-msg .message-text h3 {
    margin-top: 0;
    font-size: 1.15rem
}

.welcome-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .5rem;
    margin: 1rem 0
}

.welcome-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: .75rem;
    cursor: pointer;
    transition: var(--t);
    display: flex;
    flex-direction: column;
    gap: .25rem
}

.welcome-card:hover {
    border-color: var(--green);
    background: var(--green-tint)
}

.welcome-card i {
    color: var(--green);
    font-size: 1rem;
    margin-bottom: .125rem
}

.welcome-card strong {
    font-size: .8rem;
    color: var(--text)
}

.welcome-card span {
    font-size: .7rem;
    color: var(--text2);
    line-height: 1.4
}

.welcome-hint {
    font-size: .8rem;
    color: var(--text3)
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 4px 0
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite;
    opacity: .4
}

.typing-indicator span:nth-child(2) {
    animation-delay: .2s
}

.typing-indicator span:nth-child(3) {
    animation-delay: .4s
}

/* Chat Input */
.chat-input-wrap {
    padding: .75rem 1rem;
    border-top: 1px solid var(--border);
    background: rgba(17, 34, 64, .4);
    flex-shrink: 0
}

.chat-input-container {
    display: flex;
    align-items: flex-end;
    gap: .5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: .375rem .5rem .375rem .875rem;
    transition: border var(--t)
}

.chat-input-container:focus-within {
    border-color: var(--green)
}

.chat-input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: .875rem;
    resize: none;
    outline: none;
    max-height: 120px;
    line-height: 1.5;
    padding: .375rem 0
}

.chat-input::placeholder {
    color: var(--text3)
}

.send-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--r);
    background: var(--green);
    color: var(--bg);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--t);
    flex-shrink: 0;
    font-size: .8rem
}

.send-btn:hover {
    box-shadow: 0 2px 12px rgba(100, 255, 218, .3)
}

.send-btn:disabled {
    opacity: .3;
    cursor: default;
    box-shadow: none
}

.input-hint {
    font-size: .65rem;
    color: var(--text3);
    text-align: center;
    margin-top: .375rem
}

/* Error message */
.error-text {
    color: var(--red) !important;
    background: rgba(255, 83, 112, .05) !important;
    border-color: rgba(255, 83, 112, .2) !important
}

/* ===== ANIMATIONS ===== */
@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(.95) translateY(10px)
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0)
    }
}

@keyframes msgIn {
    from {
        opacity: 0;
        transform: translateY(8px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@keyframes typingBounce {

    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: .4
    }

    30% {
        transform: translateY(-6px);
        opacity: 1
    }
}

/* ===== RESPONSIVE ===== */
@media(max-width:768px) {
    .workspace {
        flex-direction: column
    }

    .editor-panel {
        width: 100% !important;
        height: 40%
    }

    .resize-handle {
        width: 100%;
        height: 6px;
        cursor: row-resize
    }

    .resize-dots {
        flex-direction: row
    }

    .chat-panel {
        min-width: 0
    }

    .mode-btn span {
        display: none
    }

    .mode-btn {
        padding: .375rem .5rem
    }

    .header {
        padding: .5rem .75rem
    }

    .logo-text {
        display: none
    }

    .welcome-cards {
        grid-template-columns: 1fr
    }

    .message-content {
        max-width: 90%
    }
}

@media(max-width:480px) {
    .header-right {
        gap: .35rem
    }

    .panel-actions {
        gap: .25rem
    }

    .lang-select {
        max-width: 80px
    }
}

/* ===== ACCESSIBILITY ===== */
@media(prefers-reduced-motion:reduce) {
    * {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important
    }
}

:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 2px
}