:root {
    --bg-color: #0f172a;
    --sidebar-bg: rgba(30, 41, 59, 0.7);
    --accent-color: #38bdf8;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-effect: blur(12px);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.top-nav {
    height: 64px;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: var(--glass-effect);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 24px;
    justify-content: space-between;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.logo span {
    color: var(--accent-color);
}

.machine-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(56, 189, 248, 0.1);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.top-actions {
    display: flex;
    gap: 12px;
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 320px;
    background: var(--sidebar-bg);
    backdrop-filter: var(--glass-effect);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 600;
}

.settings-groups {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.setting-item input {
    width: 100%;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.setting-item input:focus {
    border-color: var(--accent-color);
    outline: none;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.viewer-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 40px;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.drop-zone {
    width: 100%;
    max-width: 600px;
    height: 400px;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
}

.drop-zone:hover, .drop-zone.active {
    border-color: var(--accent-color);
    background: rgba(56, 189, 248, 0.05);
}

.drop-content {
    text-align: center;
}

.upload-icon {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.drop-content p span {
    color: var(--accent-color);
    font-weight: 600;
}

.action-bar {
    margin-top: 40px;
}

.btn-primary {
    width: 100%;
    background: var(--accent-color);
    color: #0f172a;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.2s;
}

.btn-slice {
    background: var(--accent-color);
    color: #0f172a;
    border: none;
    padding: 16px 48px;
    border-radius: 30px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 10px 25px -5px rgba(56, 189, 248, 0.4);
}

.btn-slice:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

.slice-progress-container {
    width: 100%;
    max-width: 600px;
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin: 20px 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.3s;
}