:root {
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-mono: "Menlo", "Monaco", "Courier New", monospace;
    /* Light Theme (Default) */
    --bg-primary-light: #ffffff;
    --bg-secondary-light: #f8fafc;
    --text-primary-light: #0f172a;
    --text-secondary-light: #64748b;
    --border-color-light: #e2e8f0;
    --accent-light: #22c55e;
    --accent-hover-light: #16a34a;
    --accent-glow-light: rgba(34, 197, 94, 0.2);
    /* Dark Theme */
    --bg-primary-dark: #111827; /* Main content background */
    --bg-secondary-dark: #030712; /* Overall page background */
    --text-primary-dark: #f9fafb;
    --text-secondary-dark: #9ca3af;
    --border-color-dark: #374151;
    --accent-dark: #4ade80;
    --accent-hover-dark: #22c55e;
    --accent-glow-dark: rgba(74, 222, 128, 0.2);
}
[data-theme="light"] {
    --bg-primary: var(--bg-primary-light);
    --bg-secondary: var(--bg-secondary-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-color-light);
    --accent: var(--accent-light);
    --accent-hover: var(--accent-hover-light);
    --accent-glow: var(--accent-glow-light);
}
[data-theme="dark"] {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-color-dark);
    --accent: var(--accent-dark);
    --accent-hover: var(--accent-hover-dark);
    --accent-glow: var(--accent-glow-dark);
}

html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideInUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
@keyframes slideOutDown { to { transform: translateY(100%); opacity: 0; } }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    margin: 0;
    width: 100%;
    transition: background-color 0.3s, color 0.3s;
}

/* --- Global Components & Auth --- */
.btn { display: inline-flex; align-items: center; gap: 0.5rem; justify-content: center; padding: 0.75rem 1.5rem; border-radius: 0.5rem; font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all 0.2s; border: 1px solid transparent; width: auto; text-decoration: none; }
.btn-full { width: 100%; }
.btn-primary { background: var(--accent); color: var(--bg-primary-dark); border-color: var(--accent); }
[data-theme="dark"] .btn-primary { color: var(--bg-primary-dark); }
[data-theme="light"] .btn-primary { color: white; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 4px 15px var(--accent-glow);}
.btn-secondary { background: var(--bg-primary); color: var(--text-primary); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: var(--bg-secondary); border-color: var(--text-secondary);}

#landing-view {
    display: none; flex-direction: column; text-align: center; position: relative;
    background: radial-gradient(circle, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}
#landing-view.active { display: block; }
.page-view {
    display: none; width: 100%; min-height: 100vh; position: fixed; top: 0; left: 0; z-index: 200; align-items: center; justify-content: center; background: var(--bg-secondary); overflow-y: auto; padding: 2rem 1rem;
}
.page-view.active { display: flex; animation: fadeIn 0.5s ease-in-out; }

.auth-card { padding: 2.5rem; width: 100%; max-width: 420px; text-align: center; background: var(--bg-primary); border-radius: 1rem; border: 1px solid var(--border-color); box-shadow: 0 20px 40px -10px rgba(0,0,0,0.2); animation: fadeInUp 0.6s ease-out; }
.auth-logo { display: flex; align-items: center; justify-content: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.auth-logo img { height: 36px; width: 36px; }
.auth-logo h1 { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); }
.auth-card h2 { color: var(--text-primary); margin-bottom: 0.5rem; font-size: 1.5rem; }
.auth-card .subtitle { color: var(--text-secondary); margin-bottom: 2rem; }
.auth-card input { width: 100%; padding: 0.8rem 1rem; margin-bottom: 1rem; border-radius: 0.5rem; border: 1px solid var(--border-color); background: var(--bg-secondary); color: var(--text-primary); font-size: 0.9rem; transition: border-color 0.2s, box-shadow 0.2s; }
.auth-card input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }

.auth-card .form-options { display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; width: 100%; margin-bottom: 1.5rem; font-size: 0.875rem; }
.auth-card .checkbox-label { display: flex; align-items: center; gap: 0.35rem; color: var(--text-secondary); cursor: pointer; }
.auth-card .checkbox-label input[type="checkbox"] { margin: 0; width: 1em; height: 1em; flex-shrink: 0; }
.auth-card .checkbox-label input[type="checkbox"]:focus { outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
.auth-card .link { color: var(--accent); text-decoration: none; font-weight: 500; align-self: flex-end; }
.auth-card .link:hover { text-decoration: underline; }
.bottom-text { margin-top: 1.5rem; font-size: 0.875rem; color: var(--text-secondary); }

/* --- Landing Page --- */
.landing-nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; width: 100%; position: sticky; top: 0; z-index: 100; animation: fadeInDown 0.8s ease-out; background: rgba(255, 255, 255, 0.1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
[data-theme="dark"] .landing-nav { background: rgba(17, 24, 39, 0.5); border-bottom: 1px solid var(--border-color); }
.landing-nav .nav-logo { font-size: 1.5rem; color: var(--text-primary); text-decoration: none;}
.landing-nav-links a { color: var(--text-primary); text-decoration: none; margin: 0 1rem; font-weight: 500; transition: color 0.2s; }
.landing-nav-links a:hover { color: var(--accent); }
.landing-hero { padding: 8rem 1rem 5rem 1rem; z-index: 1; animation: fadeInUp 0.8s ease-out; position: relative; }
.landing-hero .auth-logo img { height: 100px; width: 100px; margin-bottom: 1rem; }
.landing-hero h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; margin-bottom: 1.5rem; line-height: 1.1; max-width: 800px; margin-left:auto; margin-right:auto; background: linear-gradient(90deg, var(--accent), var(--text-primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; text-fill-color: transparent; }
.landing-hero p { font-size: clamp(1rem, 2.5vw, 1.25rem); color: var(--text-secondary); margin-bottom: 2.5rem; max-width: 650px; margin-left:auto; margin-right:auto;}
.landing-hero .btn { max-width: 220px; margin: auto; padding: 1rem 2rem; font-size: 1rem;}
.landing-section { padding: 4rem 2rem; width:100%; }

.about-container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; max-width: 1100px; margin: auto; align-items: center; text-align: left; }
.about-text h2 { font-size: 2.5rem; margin-bottom: 1.5rem; text-align: left; line-height: 1.2; }
.about-text p { color: var(--text-secondary); font-size: 1.1rem; line-height: 1.7; margin-bottom: 2rem; }
.about-highlights { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 1rem; }
.about-highlights li { display: flex; align-items: center; gap: 0.75rem; font-weight: 500; font-size: 1rem; }
.about-highlights li svg { color: var(--accent); width: 20px; height: 20px; }
.about-visual img { width: 100%; max-width: 450px; height: auto; border-radius: 1rem; }
@media (max-width: 900px) {
    .about-container { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
    .about-text h2 { text-align: center; }
    .about-visual { order: -1; margin-bottom: 2rem; }
    .about-visual img { max-width: 350px; margin: auto; display: block; }
    .about-highlights { justify-content: center; flex-direction: row; flex-wrap: wrap; }
}
.landing-section h2 { font-size: 2.5rem; margin-bottom: 3rem; text-align: center;}
.features-grid { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; max-width: 1200px; margin: auto;}
.feature-card { background: var(--bg-primary); padding: 2rem; border-radius: 0.75rem; border: 1px solid var(--border-color); max-width: 350px; text-align: left; opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease-out, transform 0.6s ease-out, box-shadow 0.3s ease-out; }
.feature-card:hover { transform: translateY(-5px) scale(1.02); box-shadow: 0 15px 30px -5px rgba(0,0,0,0.1), 0 0 0 4px var(--accent-glow); }
[data-theme="dark"] .feature-card:hover { box-shadow: 0 15px 30px -5px rgba(0,0,0,0.2), 0 0 0 4px var(--accent-glow); }
.feature-card.visible { opacity: 1; transform: translateY(0); }
.feature-card svg { color: var(--accent); margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6;}
.landing-footer { background: var(--bg-primary); border-top: 1px solid var(--border-color); padding: 1.5rem 1rem; text-align: center; color: var(--text-secondary); font-size: 0.9rem; }

/* --- Main App Shell --- */
.app-wrapper { display: none; height: 100vh; width: 100%; flex-direction: column; }
.global-navbar { display: flex; align-items: center; justify-content: space-between; padding: 0 1.5rem; height: 60px; background: var(--bg-primary); border-bottom: 1px solid var(--border-color); flex-shrink: 0; }
.nav-left, .nav-right, .nav-logo, .user-profile, .profile-dropdown .user-info { display: flex; align-items: center; }
.nav-left, .nav-right { gap: 1rem; }
.nav-logo { gap: 0.5rem; font-weight: 700; font-size: 1.25rem; }
.nav-logo img { height: 24px; width: 24px; }
.user-profile { position: relative; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: white; display: flex; align-items: center; justify-content: center; font-weight: 600; cursor: pointer; }
.profile-dropdown { display: none; position: absolute; right: 0; top: 45px; background: var(--bg-primary); border-radius: 0.5rem; border: 1px solid var(--border-color); box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1); width: 220px; z-index: 10; padding: 0.5rem 0; animation: fadeIn 0.2s ease-out; flex-direction: column; align-items: stretch; }
.user-profile.open .profile-dropdown { display: flex; }
.profile-dropdown .user-info { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-color); margin-bottom: 0.5rem; flex-direction: column; align-items: flex-start; gap: 0.25rem; }
.profile-dropdown .user-info .username { font-weight: 600; color: var(--text-primary); }
.profile-dropdown .user-info .email { font-size: 0.8rem; color: var(--text-secondary); }
.profile-dropdown a { display: block; padding: 0.75rem 1rem; color: var(--text-primary); text-decoration: none; font-size: 0.9rem; cursor: pointer; }
.profile-dropdown a:hover { background: var(--bg-secondary); }

.dashboard-wrapper { display: grid; grid-template-columns: minmax(320px, 25%) 1fr; flex-grow: 1; overflow: hidden; }
.control-panel { background: var(--bg-primary); padding: 1rem; border-right: 1px solid var(--border-color); overflow-y: auto; }
.workspace { display: flex; flex-direction: column; overflow: hidden; padding: 1rem; position: relative; }
body.fullscreen-mode .dashboard-wrapper, body.fullscreen-mode .global-navbar, body.fullscreen-mode .app-footer, body.fullscreen-mode .control-panel { display: none; }
body.app-mode { overflow: hidden; }
.app-footer { height: 40px; background: var(--bg-primary); border-top: 1px solid var(--border-color); text-align: center; padding: 0.75rem; font-size: 0.8rem; color: var(--text-secondary); flex-shrink: 0; }

.accordion-item { border: 1px solid var(--border-color); border-radius: 0.5rem; overflow: hidden; margin-bottom: 1rem; }
.accordion-header { width: 100%; background: var(--bg-secondary); border: none; padding: 1rem; font-size: 1rem; font-weight: 600; text-align: left; cursor: pointer; color: var(--text-primary); }
.accordion-content { padding: 1rem; display: none; border-top: 1px solid var(--border-color); }
.accordion-item.open .accordion-content { display: block; }
.tab-nav { display: flex; border-bottom: 1px solid var(--border-color); }
.tab-btn { padding: 0.75rem 1.25rem; border: none; background: transparent; cursor: pointer; font-weight: 500; color: var(--text-secondary); border-bottom: 2px solid transparent; width: auto; }
.tab-btn.active { color: var(--text-primary); border-bottom-color: var(--accent); }
.tab-content { flex-grow: 1; overflow-y: auto; padding-top: 1rem; }
.tab-pane { display: none; height: 100%; }
.tab-pane.active { display: block; }

.inspector-controls { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }
.control-btn-group button { border: 1px solid var(--border-color); background: var(--bg-primary); padding: 0.25rem 0.75rem; cursor: pointer; color: var(--text-secondary); }
.control-btn-group button:first-child { border-top-left-radius: 0.375rem; border-bottom-left-radius: 0.375rem; }
.control-btn-group button:last-child { border-top-right-radius: 0.375rem; border-bottom-right-radius: 0.375rem; border-left: 0; }
.control-btn-group button.active { background: var(--accent); color: white; border-color: var(--accent); }
.control-btn-group button:hover:not(.active) { color: var(--text-primary); background-color: var(--bg-secondary); }
.pagination-controls { display: flex; align-items: center; gap: 0.5rem; }
#inspector-table-container { height: calc(100% - 80px); overflow: auto; border: 1px solid var(--border-color); border-radius: 0.5rem; }
.inspector-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.inspector-table thead th { position: sticky; top: 0; background: var(--bg-secondary); padding: 0.75rem 0.5rem; text-align: left; border-bottom: 2px solid var(--border-color); font-weight: 600; z-index: 1; }
.inspector-table tbody tr:nth-child(even) { background-color: var(--bg-secondary); }
.inspector-table tbody tr:hover { background-color: var(--accent-glow); }
.inspector-table td { padding: 0.75rem 0.5rem; border-bottom: 1px solid var(--border-color); }

.terminal-window { background-color: var(--bg-secondary-dark); border: 1px solid var(--border-color-dark); border-radius: 0.75rem; height: 100%; display: flex; flex-direction: column; transition: all 0.3s ease; }
.terminal-header { display: flex; align-items: center; background: #333a49; padding: 0.5rem; border-top-left-radius: 0.75rem; border-top-right-radius: 0.75rem; }
.header-buttons { display: flex; gap: 0.5rem; }
.header-buttons span { display: inline-block; width: 12px; height: 12px; border-radius: 50%; cursor: pointer; }
.btn-red, .btn-yellow, .btn-green { background-color: #ff5f56; }
.btn-yellow { background-color: #ffbd2e; }
.btn-green { background-color: #27c93f; }
.terminal-body { flex-grow: 1; overflow-y: auto; padding: 0.75rem; color: #d1d5db; font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.6; }
.terminal-form { display: flex; flex-grow: 1; }
.terminal-form .prompt-text { color: var(--accent-dark); }
.terminal-form .prompt-input { background: none; border: none; color: #f9fafb; font-family: inherit; font-size: inherit; flex-grow: 1; outline: none; }
.terminal-window.fullscreen { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 150; border-radius: 0; }
.terminal-window.fullscreen .terminal-body { height: calc(100vh - 34px); }
.reopen-terminal-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); display: none; }

.theme-icon { display: none; }
[data-theme="light"] .theme-icon-moon { display: block; }
[data-theme="dark"] .theme-icon-sun { display: block; }

.modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.8); z-index: 300; backdrop-filter: blur(4px); align-items: center; justify-content: center; animation: fadeIn 0.3s; }
.modal-container { background: var(--bg-primary); display: flex; flex-direction: column; border-radius: 0.5rem; box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25); }
.modal-header { padding: 1rem 1.5rem; font-weight: 600; font-size: 1.1rem; border-bottom: 1px solid var(--border-color); flex-shrink: 0; display:flex; justify-content: space-between; align-items:center; }
.modal-body { flex-grow: 1; position: relative; padding: 1.5rem; overflow-y: auto; }
.modal-footer { padding: 1rem 1.5rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; border-top: 1px solid var(--border-color); flex-shrink: 0; }

#report-modal .modal-container { width: 90%; max-width: 1100px; height: 90%; }
.slide { display: none; height: 100%; width: 100%; text-align: center; }
.slide.active { display: block; animation: fadeIn 0.3s; }
.slide .chart-image { max-width: 80%; max-height: 80%; object-fit: contain; display: block; margin: auto; }

.export-dropdown { position: relative; }
.export-options { display: none; position: absolute; bottom: 100%; right: 0; margin-bottom: 0.5rem; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 0.5rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); z-index: 20; min-width: 180px; }
.export-dropdown.open .export-options { display: block; }
.export-options a { display: block; padding: 0.75rem 1rem; color: var(--text-primary); text-decoration: none; }
.export-options a:hover { background: var(--bg-secondary); }
.export-btn svg { width: 12px; height: 12px; }

#profile-modal .modal-container, #password-modal .modal-container { width: 90%; max-width: 480px; }
#profile-modal-body p { margin: 0 0 1rem; color: var(--text-secondary); }
#profile-modal-body p strong { color: var(--text-primary); font-weight: 600; }

.toggle-switch { display: flex; align-items: center; justify-content: space-between; margin-top: 1rem; }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; border-radius: 24px; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(20px); }

.loading-overlay { display: none; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); color: white; align-items: center; justify-content: center; z-index: 500; font-size: 1.2rem; }

#notification-toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    color: white;
    font-weight: 600;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    z-index: 1000;
    transition: bottom 0.5s ease-in-out;
}
#notification-toast.show {
    bottom: 20px;
}
#notification-toast.success {
    background-color: var(--accent);
}
#notification-toast.error {
    background-color: #ef4444; /* red-500 */
}