:root {
    --bg-dark: #0f172a;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-blur: blur(12px);
    --primary: #22d3ee;
    --primary-glow: #0891b2;
    --secondary: #a78bfa;
    --secondary-glow: #7c3aed;
    --danger: #f43f5e;
    --success: #10b981;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

.glass-bg {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(167, 139, 250, 0.15) 0%, transparent 40%);
    z-index: -1;
    animation: pulse 10s infinite alternate ease-in-out;
}

@keyframes pulse {
    from { transform: scale(1); }
    to { transform: scale(1.05); }
}

.boilerplate-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.empty-state {
    text-align: center;
    opacity: 0.6;
    transition: opacity 0.5s ease;
    animation: fadeIn 1s forwards;
}

.empty-state h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.empty-state p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hint {
    font-size: 0.9rem;
    background: var(--glass);
    padding: 0.75rem 1.5rem;
    border-radius: 99px;
    border: 1px solid var(--border);
    backdrop-filter: var(--glass-blur);
}

kbd {
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    color: var(--primary);
    box-shadow: 0 2px 0 rgba(0,0,0,0.5);
}

@keyframes fadeIn {
    from { transform: translateY(10px); opacity: 0; }
    to { transform: translateY(0); opacity: 0.6; }
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass);
    padding: 0.4rem 0.8rem;
    border-radius: 9999px;
    border: 1px solid var(--border);
    backdrop-filter: var(--glass-blur);
    font-size: 0.85rem;
    font-weight: 500;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-indicator.connected .dot { background: var(--success); box-shadow: 0 0 10px var(--success); }
.status-indicator.disconnected .dot { background: var(--danger); box-shadow: 0 0 10px var(--danger); }
.status-indicator.connecting .dot { background: var(--secondary); box-shadow: 0 0 10px var(--secondary); animation: blink 1s infinite; }

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

.glass {
    background: var(--glass);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 1.5rem;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.glass:hover {
    box-shadow: 0 15px 30px -5px rgba(0,0,0,0.4);
    transform: translateY(-2px);
}

.config-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
}

input[type="text"], input[type="number"] {
    flex: 1;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus, input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(34, 211, 238, 0.1);
}

input:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    background: rgba(255,255,255,0.05) !important;
}

.primary-btn, .secondary-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.primary-btn {
    background: linear-gradient(45deg, var(--primary), var(--primary-glow));
    color: #000;
    box-shadow: 0 4px 14px 0 rgba(34, 211, 238, 0.3);
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(34, 211, 238, 0.4);
}

.secondary-btn {
    background: rgba(244, 63, 94, 0.1);
    color: var(--danger);
    border: 1px solid rgba(244, 63, 94, 0.2);
}

.secondary-btn:hover {
    background: rgba(244, 63, 94, 0.2);
}

.hidden { display: none; }

.data-exchange {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.data-input {
    position: relative;
}

.byte-counter {
    position: absolute;
    right: 1rem;
    bottom: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.data-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.display-box {
    background: rgba(0,0,0,0.2);
    border-radius: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--border);
}

.display-box.incoming, .display-box.incoming-hex {
    grid-column: span 1;
}

.display-box.outgoing {
    grid-column: span 2;
}

code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary);
    word-break: break-all;
    display: block;
    margin-top: 0.25rem;
}

.text-data {
    font-size: 1rem;
    color: var(--secondary);
    min-height: 1.5rem;
}

.traffic-logs {
    height: 400px;
    display: flex;
    flex-direction: column;
}

.logs-container {
    flex: 1;
    overflow-y: auto;
    font-size: 0.7rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.logs-container::-webkit-scrollbar { width: 4px; }
.logs-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

.log-entry {
    padding: 2px 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.log-entry.sent { color: var(--primary); }
.log-entry.received { color: var(--secondary); }

@media (max-width: 600px) {
    .data-display {
        grid-template-columns: 1fr;
    }
    .display-box.outgoing {
        grid-column: span 1;
    }
}

/* IO Configurator Section */
.io-config-block {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.io-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

select#signal-type, select {
    background: rgba(0,0,0,0.4);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: inherit;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

select option {
    background-color: var(--bg-dark);
    color: var(--text-main);
}

.st-preview-container {
    position: relative;
    background: rgba(0,0,0,0.3);
    border-radius: 1rem;
    padding: 1.25rem;
    border: 1px solid var(--border);
}

.code-box {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--success);
    white-space: pre-wrap;
    line-height: 1.5;
}

.copy-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: rgba(167, 139, 250, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(167, 139, 250, 0.2);
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: rgba(167, 139, 250, 0.2);
    color: var(--text-main);
}

/* Modal Dashboard Styles */
.modal {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(8px);
    transition: opacity 0.3s ease;
}

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

.modal-content {
    width: 90%;
    max-width: 900px;
    height: 85vh;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
}

.modal-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.tab-link {
    padding: 0.75rem 1.25rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
}

.tab-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

.tab-content.active { display: flex; flex-direction: column; }

.io-editor {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.io-actions {
    display: flex;
    gap: 1rem;
    position: sticky;
    bottom: 0;
    background: var(--bg-dark);
    padding: 1rem 0;
}

/* Debug Monitor Layout */
.debug-monitor {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    padding: 1.5rem;
    height: 100%;
    overflow-y: auto;
}

.monitor-column h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(34, 211, 238, 0.2);
}

.monitor-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.monitor-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
}

.monitor-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

.monitor-item label {
    font-weight: 600;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--text-muted) !important;
    text-transform: none;
}

/* Custom Value Styling */
.monitor-item input[type="text"] {
    background: rgba(0,0,0,0.4) !important;
    border: 1px solid rgba(255,255,255,0.1) !important;
    border-radius: 4px;
    padding: 0.2rem 0.5rem !important;
    color: var(--primary) !important;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    text-align: right;
    width: 100px !important;
}

/* Custom Toggle/Checkbox Styling */
.monitor-item input[type="checkbox"] {
    width: 32px !important;
    height: 16px !important;
    position: relative;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.3s;
}

.monitor-item input[type="checkbox"]:checked {
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary-shadow);
}

.monitor-item input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
}

.monitor-item input[type="checkbox"]:checked::before {
    transform: translateX(16px);
}

.modal-footer {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    position: relative;
}

.code-box-mini {
    font-size: 0.7rem;
    background: rgba(0,0,0,0.4);
    padding: 1rem;
    border-radius: 0.5rem;
    max-height: 150px;
    overflow-y: auto;
    color: var(--success);
}

.copy-btn-mini {
    position: absolute;
    top: 1.5rem;
    right: 0.5rem;
    padding: 0.3rem 0.6rem;
    font-size: 0.6rem;
    background: var(--primary);
    color: #000;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* IO Table Grid System */
.io-row {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1fr 2fr 80px;
    align-items: center;
    gap: 1.5rem;
    padding: 0.85rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.9rem;
    transition: background 0.2s ease;
}

.io-row:hover:not(.header):not(.add-row) {
    background: rgba(255, 255, 255, 0.04);
}

.io-row.header {
    background: none;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    border-bottom: 1px solid var(--border);
}

.io-row input, .io-row select {
    width: 100%;
}

/* Add Row Integration */
.io-row.add-row {
    background: rgba(34, 211, 238, 0.03);
    border: 1px dashed rgba(34, 211, 238, 0.3);
    border-radius: 0.75rem;
    margin-top: 1.5rem;
    padding: 0.6rem 1rem;
}

.io-row.add-row input, .io-row.add-row select {
    background: rgba(0, 0, 0, 0.4) !important;
    border-radius: 6px !important;
    border: 1px solid rgba(255,255,255,0.1) !important;
    padding: 0.5rem !important;
    font-size: 0.85rem;
}

.io-row.add-row button {
    height: 36px;
    width: 36px;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4rem;
    justify-self: end;
}

/* Secondary Button Polish */
.secondary-btn {
    background: rgba(167, 139, 250, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(167, 139, 250, 0.2);
}

.secondary-btn:hover {
    background: rgba(167, 139, 250, 0.2);
    color: var(--text-main);
    transform: translateY(-1px);
}

.del-btn {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 1.4rem;
    cursor: pointer;
    opacity: 0.5;
    transition: all 0.2s;
    justify-self: end;
}

.del-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Remove Number Spinners */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}
input[type=number] { 
    -moz-appearance: textfield; 
    appearance: textfield; 
}