/* TinyML — Brutalist Dark Theme
 * Clean, minimal, no-nonsense design
 */

/* ============================================
   CSS LAYERS - Better cascade organization
   ============================================ */

@layer reset, base, components, utilities;

/* ============================================
   SCROLLBARS — Minimal
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #000;
}

::-webkit-scrollbar-thumb {
    background: #333;
    border: 2px solid #000;
}

::-webkit-scrollbar-thumb:hover {
    background: #22c55e;
}

* {
    scrollbar-width: thin;
    scrollbar-color: #333 #000;
}

/* ============================================
   CSS CUSTOM PROPERTIES
   ============================================ */

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --bg-quaternary: #1a1a1a;

    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;

    --accent-primary: #22c55e;
    --accent-secondary: #16a34a;
    --accent-success: #22c55e;
    --accent-warning: #eab308;
    --accent-danger: #ef4444;

    --border-primary: #222222;
    --border-secondary: #333333;

    --font-size-xs: 12.5px;
    --font-size-sm: 13.5px;
    --font-size-base: 14.5px;
    --font-size-md: 15.5px;
    --font-size-lg: 17.5px;
}

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

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 16px;
    line-height: 1.5;
    font-size: var(--font-size-base);
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-primary);
    border: 2px solid var(--border-primary);
}

/* ============================================
   HEADER — Brutalist
   ============================================ */

.header {
    background: var(--bg-primary);
    padding: 20px 24px;
    border-bottom: 2px solid var(--accent-primary);
}

.header h1 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ============================================
   CONTROLS
   ============================================ */

.controls {
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.control-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
}

.control-group:hover {
    border-color: var(--border-secondary);
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    font-weight: 500;
    font-size: var(--font-size-sm);
    min-width: 100px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.control-group label i {
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
}

/* Model buttons */
#online-model-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}

#load-model-btn,
#model-info-btn {
    flex: 0 0 auto;
    min-width: 80px;
}

/* Quantization filter */
#quant-filter-group {
    padding: 10px 12px;
    margin-bottom: 8px;
}

#quant-filter {
    padding: 6px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

#quant-filter:hover,
#quant-filter:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.quant-hint {
    font-size: var(--font-size-xs);
    color: var(--accent-warning);
}

/* ============================================
   SELECT & INPUTS
   ============================================ */

select {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    padding: 8px 32px 8px 10px;
    font-size: var(--font-size-sm);
    min-width: 220px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='2'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 14px;
}

select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.model-search {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    padding: 6px 10px;
    font-size: var(--font-size-sm);
    width: 100%;
    margin-bottom: 6px;
}

.model-search:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.model-search::placeholder {
    color: var(--text-muted);
}

/* ============================================
   SLIDERS — Brutalist Grid
   ============================================ */

.sliders-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.sliders-grid .control-group {
    margin-bottom: 0;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.slider-wrapper {
    position: relative;
    flex: 1;
    height: 4px;
    background: var(--border-secondary);
}

.slider-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--accent-primary);
}

.slider-container input[type="range"] {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 4px;
    background: transparent;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border: 2px solid var(--bg-primary);
    cursor: pointer;
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    background: #fff;
}

.slider-container input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border: 2px solid var(--bg-primary);
    cursor: pointer;
}

.slider-container input[type="range"]::-webkit-slider-runnable-track {
    height: 4px;
    background: transparent;
}

.slider-container input[type="range"]::-moz-range-track {
    height: 4px;
    background: transparent;
}

.slider-value {
    min-width: 50px;
    text-align: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    font-family: "JetBrains Mono", monospace;
    background: var(--bg-primary);
    padding: 6px 8px;
    border: 1px solid var(--border-primary);
    color: var(--accent-primary);
}

/* ============================================
   ACTION BUTTONS
   ============================================ */

.action-buttons {
    display: flex;
    gap: 8px;
    padding: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    margin-top: 12px;
}

/* ============================================
   BUTTONS — Brutalist
   ============================================ */

button {
    padding: 8px 14px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
    cursor: pointer;
    font-weight: 500;
    font-size: var(--font-size-sm);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.1s ease;
}

button:hover:not(:disabled) {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #000;
}

button:active:not(:disabled) {
    transform: translateY(1px);
}

button:disabled {
    background: var(--bg-quaternary);
    color: var(--text-muted);
    border-color: var(--border-primary);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--bg-primary);
    border-color: var(--border-primary);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    padding: 6px 10px;
}

.btn-secondary i {
    color: var(--accent-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) i {
    color: #000;
}

/* ============================================
   STATUS BAR
   ============================================ */

#status {
    padding: 10px 24px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--accent-warning);
}

.status-indicator.ready {
    background: var(--accent-success);
}

.status-indicator.error {
    background: var(--accent-danger);
}

.status-indicator.loading {
    background: var(--accent-primary);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ============================================
   CHAT CONTAINER
   ============================================ */

#chat-container {
    height: 500px;
    overflow-y: auto;
    padding: 20px 24px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-primary);
}

/* ============================================
   MESSAGES — Brutalist
   ============================================ */

.message {
    margin-bottom: 16px;
    padding: 12px 16px;
    max-width: 80%;
    border: 1px solid var(--border-primary);
}

.message.user {
    background: var(--bg-tertiary);
    margin-left: auto;
    border-left: 3px solid var(--accent-primary);
}

.message.assistant {
    background: var(--bg-secondary);
    margin-right: auto;
    border-left: 3px solid var(--border-secondary);
}

.message.error {
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-danger);
    color: #fca5a5;
}

.message.system {
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-warning);
    margin: 0 auto;
    max-width: 90%;
}

.message-header {
    font-weight: 600;
    font-size: var(--font-size-xs);
    margin-bottom: 6px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.message-header i {
    font-size: var(--font-size-xs);
}

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

.message.assistant .message-header i {
    color: var(--text-secondary);
}

.message-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    word-wrap: break-word;
}

.message-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 8px;
}

/* Loading state */
.loading {
    color: var(--text-muted);
    font-style: italic;
}

.typing-indicator {
    display: inline-flex;
    gap: 4px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    animation: typing 1s infinite;
}

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

@keyframes typing {
    0%, 60%, 100% { opacity: 0.3; }
    30% { opacity: 1; }
}

/* ============================================
   INPUT CONTAINER
   ============================================ */

#input-container {
    padding: 16px 24px;
    background: var(--bg-secondary);
}

.input-wrapper {
    display: flex;
    border: 1px solid var(--border-primary);
    background: var(--bg-primary);
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
}

#user-input {
    flex: 1;
    padding: 12px 14px;
    border: none;
    background: transparent;
    font-size: var(--font-size-base);
    resize: none;
    min-height: 44px;
    max-height: 150px;
    color: var(--text-primary);
    font-family: inherit;
    line-height: 1.5;
    outline: none;
}

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

.send-button {
    padding: 12px 20px;
    background: var(--accent-primary);
    color: #000;
    border: none;
    border-left: 1px solid var(--border-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.send-button i {
    color: #000;
}

.send-button:hover:not(:disabled) {
    background: #fff;
}

.send-button:disabled {
    background: var(--bg-quaternary);
    color: var(--text-muted);
}

.send-button:disabled i {
    color: var(--text-muted);
}

/* ============================================
   STATS
   ============================================ */

.stats {
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-primary);
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 12px;
}

.stats > span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.stats i {
    color: var(--accent-primary);
}

/* ============================================
   MODAL — Brutalist
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
}

.modal-content {
    background: var(--bg-primary);
    margin: 5% auto;
    padding: 24px;
    border: 2px solid var(--border-secondary);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-content h2 {
    font-size: var(--font-size-md);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-primary);
}

.modal-content h3 {
    font-size: var(--font-size-base);
    color: var(--accent-primary);
    margin: 16px 0 8px;
}

.modal-content h4 {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 12px 0 6px;
}

.modal-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.modal-content ul {
    margin: 0;
    padding-left: 20px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.modal-content li {
    margin-bottom: 4px;
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--accent-danger);
}

/* ============================================
   FOOTER — Brutalist
   ============================================ */

.footer-integrated {
    padding: 16px 24px;
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
}

.footer-integrated::before {
    display: none;
}

.footer-integrated p {
    margin: 0;
    line-height: 1.8;
}

.footer-integrated .copyright {
    margin-top: 6px;
    opacity: 0.6;
}

.footer-integrated a {
    color: var(--accent-primary);
    text-decoration: none;
}

.footer-integrated a:hover {
    text-decoration: underline;
}

.footer-integrated .divider {
    margin: 0 8px;
    opacity: 0.3;
}

/* ============================================
   ABOUT MODAL
   ============================================ */

.about-modal-content {
    max-width: 500px;
}

.about-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-primary);
}

.about-header h2 {
    color: var(--accent-primary);
    font-size: var(--font-size-md);
    border: none;
    padding: 0;
    margin: 0;
}

.about-section {
    margin-bottom: 20px;
}

.about-section h3 {
    font-size: var(--font-size-sm);
    margin-bottom: 8px;
}

.about-section p {
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    padding: 6px 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.features-list li:last-child {
    border-bottom: none;
}

.family-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    text-align: center;
}

.family-member {
    background: var(--bg-tertiary);
    padding: 12px 6px;
    border: 1px solid var(--border-primary);
    font-size: var(--font-size-sm);
}

.family-member:hover {
    border-color: var(--accent-primary);
}

.family-member small {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

.links-grid {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
    border: 1px solid var(--border-primary);
    font-size: var(--font-size-sm);
}

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

.about-quote {
    background: var(--bg-tertiary);
    padding: 16px;
    border-left: 3px solid var(--accent-primary);
    margin: 20px 0;
}

.about-quote blockquote {
    margin: 0;
    font-style: italic;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.about-quote footer {
    margin-top: 8px;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-align: right;
}

.about-footer {
    text-align: center;
    padding-top: 12px;
    border-top: 1px solid var(--border-primary);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ============================================
   CONFIRM MODAL
   ============================================ */

.confirm-modal-content {
    max-width: 400px;
    text-align: center;
}

.confirm-modal-content h2 {
    color: var(--accent-warning);
    margin-bottom: 16px;
}

.confirm-modal-content p {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: 24px;
}

.confirm-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.btn-confirm-yes {
    background: var(--accent-danger);
    color: #fff;
    border: 1px solid var(--accent-danger);
    padding: 10px 24px;
    font-weight: 600;
}

.btn-confirm-yes:hover {
    background: #dc2626;
    border-color: #dc2626;
}

.btn-confirm-no {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-secondary);
    padding: 10px 24px;
}

.btn-confirm-no:hover {
    background: var(--bg-quaternary);
    border-color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .container {
        max-width: 100%;
        margin: 0;
    }

    .sliders-grid {
        gap: 10px;
    }
}

/* Tablets */
@media (max-width: 768px) {
    body {
        padding: 8px;
    }

    .header {
        padding: 16px;
        text-align: center;
    }

    .header h1 {
        font-size: var(--font-size-lg);
    }

    .subtitle {
        font-size: var(--font-size-sm);
    }

    .controls {
        padding: 12px;
    }

    .control-group {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding: 10px;
    }

    .control-group label {
        min-width: auto;
        justify-content: center;
    }

    #online-model-group {
        flex-direction: column;
    }

    #load-model-btn,
    #model-info-btn {
        width: 100%;
    }

    .sliders-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .slider-container {
        flex-direction: row;
        width: 100%;
    }

    .slider-value {
        min-width: 60px;
    }

    .action-buttons {
        flex-direction: column;
        gap: 8px;
    }

    .action-buttons button {
        width: 100%;
    }

    select {
        min-width: auto;
        width: 100%;
        padding: 10px 32px 10px 12px;
    }

    .model-search {
        padding: 10px 12px;
    }

    #status {
        padding: 10px 16px;
        flex-wrap: wrap;
        justify-content: center;
        text-align: center;
    }

    #chat-container {
        height: 45vh;
        min-height: 300px;
        padding: 12px;
    }

    .message {
        max-width: 90%;
        padding: 10px 12px;
    }

    .message-content {
        font-size: var(--font-size-sm);
    }

    #input-container {
        padding: 12px;
    }

    .input-wrapper {
        flex-direction: column;
    }

    #user-input {
        padding: 12px;
        font-size: var(--font-size-base);
    }

    .send-button {
        border-left: none;
        border-top: 1px solid var(--border-primary);
        padding: 14px 20px;
    }

    .stats {
        justify-content: center;
        gap: 16px;
        padding: 10px 16px;
    }

    .stats > span {
        font-size: var(--font-size-sm);
    }

    .footer-integrated {
        padding: 12px 16px;
    }

    .footer-integrated .divider {
        display: none;
    }

    .footer-integrated p {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }

    .modal-content {
        margin: 2% auto;
        width: 95%;
        padding: 16px;
        max-height: 90vh;
    }

    .confirm-buttons {
        flex-direction: column;
    }

    .confirm-buttons button {
        width: 100%;
    }

    .links-grid {
        flex-direction: column;
    }

    .link-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Small phones */
@media (max-width: 480px) {
    body {
        padding: 4px;
    }

    .header {
        padding: 12px;
    }

    .header h1 {
        font-size: var(--font-size-md);
    }

    .controls {
        padding: 8px;
    }

    .control-group {
        padding: 8px;
        gap: 8px;
    }

    #chat-container {
        height: 40vh;
        min-height: 250px;
        padding: 8px;
    }

    .message {
        max-width: 95%;
        padding: 8px 10px;
    }

    .message-header {
        font-size: var(--font-size-xs);
    }

    .message-content {
        font-size: var(--font-size-xs);
    }

    .stats {
        flex-direction: column;
        gap: 8px;
        align-items: center;
    }

    .quant-hint {
        display: none;
    }

    .about-modal-content {
        padding: 12px;
    }

    .features-list li {
        font-size: var(--font-size-xs);
    }
}

/* Landscape phones */
@media (max-height: 500px) and (orientation: landscape) {
    #chat-container {
        height: 30vh;
        min-height: 150px;
    }

    .header {
        padding: 8px 16px;
    }

    .controls {
        padding: 8px 12px;
    }

    .modal-content {
        max-height: 85vh;
        margin: 2% auto;
    }
}