:root {
    --secondary: #52525b;
}

/* Default to Dark Mode */
[data-theme='dark'] {
    --bg-primary: #000000;
    --bg-card: #151515;
    --bg-input: #1f1f1f;
    --border-card: #2e2e2e;
    --border-input: #3e3e3e;
    --accent-primary: #76b900; /* NVIDIA Green */
    --accent-hover: #88d400;
    --accent-glow: rgba(118, 185, 0, 0.2);
    --text-main: #ffffff;
    --text-muted: #a1a1aa;
    --code-bg: #09090b;
    --header-bg: #1a1a1a;
}

/* Light Mode */
[data-theme='light'] {
    --bg-primary: #f5f5f7;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --border-card: #d2d2d7;
    --border-input: #e5e7eb;
    --accent-primary: #0071e3; /* Mac Blue */
    --accent-hover: #0077ed;
    --accent-glow: rgba(0, 113, 227, 0.1);
    --text-main: #1d1d1f;
    --text-muted: #6e6e73;
    --code-bg: #f5f5f7;
    --header-bg: #ebebeb;
}

:root {
    --success: #76b900;
    --error: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-primary);
    min-height: 100vh;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
}

/* Background Subtle Glow */
#app-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(118, 185, 0, 0.1), transparent 50%);
    z-index: -2;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    margin-bottom: 2.5rem;
    text-align: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-card);
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    margin-bottom: 0.5rem;
    text-align: center;
}

/* Mac Window Styling */
.mac-window {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    margin-top: 1rem;
}

.mac-title-bar {
    background: var(--header-bg);
    height: 44px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-card);
    position: relative;
}

.mac-dots {
    display: flex;
    gap: 8px;
    position: absolute;
    left: 16px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.mac-tabs {
    display: flex;
    margin: 0 auto;
    background: #000;
    border-radius: 6px;
    padding: 2px;
}

.mac-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
    width: auto;
    margin-bottom: 0;
    text-transform: none;
    letter-spacing: normal;
}

.mac-tab:hover {
    color: var(--text-main);
}

.mac-tab.active {
    background: var(--bg-input);
    color: var(--accent-primary);
}

.window-content {
    padding: 2rem;
    min-height: 500px;
}

.tab-pane {
    display: none;
}

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

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

/* Add a subtle green underline to h1 */
h1::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-primary);
    margin: 1rem auto 0;
    border-radius: 2px;
}

p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.panel {
    background: #1a1a1b;
    border: 1px solid var(--border-card);
    border-radius: 8px;
    padding: 1.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
}

.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 900px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
}

/* Common Panel Header */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-card);
    padding-bottom: 1rem;
    margin-bottom: 1.25rem;
}

h2 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
}

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

.badge-row {
    display: flex;
    gap: 0.5rem;
}

.badge {
    background: var(--bg-input);
    border: 1px solid var(--border-input);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-primary);
}

/* Observation Panel */
.task-info {
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #e4e4e7;
}

.feedback-info {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-left: 3px solid var(--error);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

.code-container {
    background: var(--code-bg);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-card);
}

.code-header {
    background: var(--header-bg);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-card);
    display: flex;
    justify-content: flex-end;
}

pre {
    margin: 0;
    padding: 1rem;
    font-family: 'JetBrains Mono', 'Roboto Mono', monospace;
    font-size: 0.85rem;
    overflow-x: auto;
}

/* Action Panel Form */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #d4d4d8;
    margin-bottom: 0.4rem;
}

input, select, textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-input);
    border-radius: 4px;
    color: var(--text-main);
    padding: 0.65rem 0.875rem;
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 1px var(--accent-primary);
}

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

button {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 4px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.primary-btn {
    background: var(--accent-primary);
    color: #000000;
}

.primary-btn:hover {
    background: var(--accent-hover);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--border-input);
    color: var(--text-main);
}

.secondary-btn:hover {
    background: var(--bg-input);
    border-color: #52525b;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--accent-primary);
    border-left: 4px solid var(--accent-primary);
    padding: 1rem 1.25rem;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5), 0 0 15px var(--accent-glow);
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    z-index: 100;
    min-width: 320px;
}

/* Theme Toggle Button */
.theme-toggle {
    position: absolute;
    right: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
    margin: 0;
    transition: color 0.2s;
}

.theme-toggle:hover {
    color: var(--text-main);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

@keyframes slideUp {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toast-icon {
    font-size: 1.25rem;
}

#toast-title {
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
    color: var(--text-muted);
}

#toast-message {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

#toast-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: auto;
    margin: 0;
}

#toast-close:hover {
    color: var(--text-main);
}

.environment-done {
    border-color: var(--success);
    box-shadow: 0 0 15px var(--accent-glow);
}