:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #ef4444;
    --secondary-hover: #dc2826;
    --success-color: #10b981;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-radius: 16px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --transition: all 0.2s ease-in-out;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 40px 20px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 8px 0;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.05);
}

h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.actions {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

button {
    padding: 10px 22px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

button:disabled {
    background-color: #cbd5e1 !important;
    color: #94a3b8 !important;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

button.primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

button.primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.4);
}

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

button.secondary:hover:not(:disabled) {
    background-color: var(--secondary-hover);
}

button.small {
    padding: 6px 14px;
    font-size: 13px;
    background-color: #f1f5f9;
    color: #475569;
    box-shadow: none;
}

button.small:hover:not(:disabled) {
    background-color: #e2e8f0;
}

/* File Input Styling */
input[type="file"] {
    flex: 1;
    color: var(--text-muted);
    font-size: 14px;
    background: #f8fafc;
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    padding: 6px;
    cursor: pointer;
    transition: var(--transition);
}

input[type="file"]:hover {
    border-color: var(--primary-color);
}

input[type="file"]::file-selector-button {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    background-color: #e0e7ff;
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-right: 12px;
}

input[type="file"]::file-selector-button:hover {
    background-color: #c7d2fe;
}

/* Form Groups */
.form-group {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    background: #f8fafc;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.form-group:focus-within {
    border-color: #bae6fd;
    background: #f0f9ff;
}

.form-group label {
    width: 120px;
    font-weight: 600;
    color: #475569;
    font-size: 14px;
}

.text-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: #ffffff;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Status Indicator */
.status {
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    font-size: 14px;
    gap: 8px;
    margin-left: auto;
}

.status::before {
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status.connected {
    color: #059669;
    background-color: #d1fae5;
}
.status.connected::before {
    background-color: #10b981;
}

.status.disconnected {
    color: #dc2826;
    background-color: #fee2e2;
}
.status.disconnected::before {
    background-color: #ef4444;
}

/* Progress Bar */
.progress-container {
    width: 100%;
    background-color: #f1f5f9;
    border-radius: 10px;
    height: 12px;
    margin-bottom: 10px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.progress-bar {
    height: 100%;
    background-color: var(--success-color);
    width: 0%;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background-image: linear-gradient(45deg, rgba(255,255,255,0.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.15) 50%, rgba(255,255,255,0.15) 75%, transparent 75%, transparent);
    background-size: 1rem 1rem;
    animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
    0% { background-position: 1rem 0; }
    100% { background-position: 0 0; }
}

.status-text {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Terminal Styling */
.terminal-card {
    background: #0f172a;
    border-color: #0f172a;
}

.terminal-card h2 {
    color: #f8fafc;
}

.terminal-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 12px;
}

textarea#terminal {
    flex: 1;
    width: 100%;
    height: 300px;
    background-color: rgba(0,0,0,0.3);
    color: #34d399;
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    padding: 16px;
    border: 1px solid #1e293b;
    border-radius: 8px;
    resize: none;
    box-sizing: border-box;
    font-size: 13px;
    line-height: 1.5;
    outline: none;
}

textarea#terminal::-webkit-scrollbar {
    width: 8px;
}
textarea#terminal::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
}
textarea#terminal::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}
textarea#terminal::-webkit-scrollbar-thumb:hover {
    background: #475569;
}