:root {
    --primary-purple: #8b5cf6;
    --primary-purple-dark: #7c3aed;
    --primary-gray: #1f2937;
    --secondary-gray: #374151;
    --text-light: #f3f4f6;
    --text-dark: #111827;
    --accent-gray: #4b5563;
}

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

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-gray);
    color: var(--text-light);
    height: 100vh;
    display: flex;
}

.sidebar {
    width: 250px;
    background-color: var(--secondary-gray);
    padding: 20px;
    border-right: 1px solid var(--accent-gray);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar .nav-item {
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-light);
    text-decoration: none;
}

.sidebar .nav-item:hover {
    background-color: var(--primary-purple);
    transform: translateX(4px);
}

.sidebar .nav-item.active {
    background-color: var(--primary-purple);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.sidebar .nav-item i {
    font-size: 1.2em;
}

.sidebar .logo {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--primary-purple);
    margin-bottom: 24px;
    padding: 0 16px;
}

.main-content {
    flex: 1;
    padding: 32px;
    height: 100vh;
    overflow-y: auto;
}

.tab-content {
    display: none;
    max-width: 800px;
    margin: 0 auto;
}

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

.content-header {
    margin-bottom: 24px;
}

.content-header h1 {
    font-size: 2em;
    font-weight: 600;
    margin-bottom: 8px;
}

.content-header p {
    color: var(--text-light);
    opacity: 0.8;
}

.input-container {
    background: var(--secondary-gray);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

textarea {
    width: 100%;
    min-height: 120px;
    padding: 16px;
    border-radius: 8px;
    background-color: var(--primary-gray);
    color: var(--text-light);
    border: 2px solid var(--accent-gray);
    resize: vertical;
    font-size: 1rem;
    line-height: 1.5;
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.button-container {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.word-predictions {
    background-color: var(--secondary-gray);
    border-radius: 8px;
    padding: 16px;
    margin-top: 12px;
    animation: slideDown 0.3s ease;
}

.prediction-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 4px;
    background-color: var(--primary-gray);
    transition: all 0.2s ease;
}

.prediction-item:hover {
    background-color: var(--accent-gray);
}

.message {
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 16px;
    max-width: 80%;
    animation: messageSlide 0.3s ease;
}

.message.user {
    background-color: var(--primary-purple);
    margin-left: auto;
}

.message.assistant {
    background-color: var(--secondary-gray);
    margin-right: auto;
}

.message.system {
    background-color: var(--accent-gray);
    margin: 0 auto 24px auto;
    text-align: center;
}

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

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

.button {
    background-color: var(--primary-purple);
    color: var(--text-light);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.button:hover {
    background-color: var(--primary-purple-dark);
    transform: translateY(-1px);
}

.button:active {
    transform: translateY(0);
}

.button.secondary {
    background-color: var(--accent-gray);
}

.toggle-debug {
    background-color: var(--accent-gray);
    color: var(--text-light);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.toggle-debug:hover {
    background-color: var(--primary-purple);
}

.toggle-debug.active {
    background-color: var(--primary-purple);
}

.image-upload {
    border: 2px dashed var(--primary-purple);
    padding: 32px;
    text-align: center;
    border-radius: 12px;
    margin-bottom: 20px;
    background-color: var(--primary-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.image-upload:hover {
    border-color: var(--primary-purple-dark);
    background-color: rgba(139, 92, 246, 0.1);
}

.image-upload i {
    font-size: 2.5em;
    color: var(--primary-purple);
}

.image-upload:hover i {
    transform: scale(1.1);
    color: var(--primary-purple-dark);
}

.image-upload input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.image-upload p {
    color: var(--text-light);
    margin: 0;
    font-size: 1rem;
}

.image-upload i {
    font-size: 2rem;
    color: var(--primary-purple);
    margin-bottom: 12px;
}

.image-preview {
    max-width: 100%;
    margin-top: 16px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

#loading {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--secondary-gray);
    padding: 24px 48px;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

#loading.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.spinner {
    border: 4px solid var(--accent-gray);
    border-top: 4px solid var(--primary-purple);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 12px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

#chat-output, #summary-output, #image-output {
    background-color: var(--secondary-gray);
    border-radius: 12px;
    padding: 24px;
    margin-top: 24px;
    min-height: 200px;
    max-height: 600px;
    overflow-y: auto;
}

.output-content {
    background-color: var(--primary-gray);
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
    white-space: pre-wrap;
    font-family: 'Inter', monospace;
}

.output-content.error {
    background-color: rgba(220, 38, 38, 0.2);
    border-left: 4px solid rgb(220, 38, 38);
}

.input-container textarea::placeholder {
    color: var(--text-light);
    opacity: 0.5;
}

.keyboard-hint {
    display: block;
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
    opacity: 0.7;
    font-style: italic;
    text-align: center;
}

.button-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.button-container .button {
    width: auto;
    min-width: 200px;
}

.message.error {
    background-color: rgba(220, 38, 38, 0.2);
    border-left: 4px solid rgb(220, 38, 38);
    margin: 0 auto;
}

/* Token hover alternatives */
.generated-text {
    display: inline-block;
    line-height: 1.6;
}
.generated-token {
    display: inline-block;
    padding: 2px 4px;
    margin-right: 1px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-light);
}
.generated-token:hover {
    background: rgba(139,92,246,0.12);
}
.alt-tooltip {
    position: absolute;
    display: none;
    min-width: 160px;
    background: linear-gradient(180deg, #111827, #0b1220);
    color: var(--text-light);
    border: 1px solid rgba(139,92,246,0.18);
    border-radius: 8px;
    padding: 8px;
    box-shadow: 0 8px 24px rgba(2,6,23,0.6);
    z-index: 2000;
}
.alt-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
    opacity: 0.9;
}
.alt-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 6px;
    border-radius: 6px;
}
.alt-row:hover { background: rgba(255,255,255,0.02); }
.alt-token { color: var(--text-light); }
.alt-prob { color: var(--accent-gray); font-size: 0.85rem; }