/* PREMIUM DESIGN SYSTEM */

:root {
    /* Safe Area Variables for iOS/Android */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    
    /* Core Layout */
    --sidebar-width: 280px;
    --dock-height: 65px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Animation */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-bs-theme="dark"] {
    --bg-base: #0E1015;
    --bg-panel: #16181D;
    --bg-surface: #22242B;
    --bg-surface-hover: #2A2D35;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #F4F4F5;
    --text-secondary: #8A8F98;
    --text-muted: #6B6D76;
    
    --accent-primary: #5E6AD2;
    --accent-primary-hover: #6E79D6;
    --accent-success: #2EA043;
    --accent-warning: #D29922;
    --accent-danger: #F85149;
    --accent-info: #388BFD;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.6);
    --glass-bg: rgba(22, 24, 29, 0.7);
}

[data-bs-theme="light"] {
    --bg-base: #F7F8FA;
    --bg-panel: #FFFFFF;
    --bg-surface: #F1F3F5;
    --bg-surface-hover: #E9ECEF;
    --border-color: rgba(0, 0, 0, 0.08);
    --text-primary: #111113;
    --text-secondary: #6B6D76;
    --text-muted: #8A8F98;
    
    --accent-primary: #4F5EDB;
    --accent-primary-hover: #3E4BBA;
    --accent-success: #238636;
    --accent-warning: #B07D16;
    --accent-danger: #DA3633;
    --accent-info: #0969DA;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
    --glass-bg: rgba(255, 255, 255, 0.8);
}

/* GPU Acceleration & Performance Optimizations */
* {
    -webkit-tap-highlight-color: transparent;
}

.card, .glass-panel, .sidebar, .mobile-bottom-dock, .btn, .dock-item {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.card {
    contain: layout style;
}

.table-responsive, .custom-scrollbar, main, .card-body {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* Base Resets & Typography */
html {
    height: 100%;
    height: 100dvh;
    -webkit-text-size-adjust: 100%;
    overscroll-behavior-y: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    padding: 0;
    height: 100%;
    height: 100dvh;
    overflow-x: hidden;
    overscroll-behavior-y: none;
}

.app-layout {
    height: 100vh;
    height: 100dvh;
    width: 100%;
    overflow: hidden;
}

/* iOS Safari: Prevent automatic zoom on input focus */
@media screen and (max-width: 768px) {
    input, select, textarea, .form-control, .form-control.font-monospace {
        font-size: 16px !important;
    }
}
/* Allow selection where needed */
input, textarea, pre, code, .markdown-body, #code-editor, #terminal-container, .selectable {
    user-select: text !important;
    -webkit-user-select: text !important;
}

/* Override Bootstrap Colors */
.bg-dark, .bg-black { background-color: var(--bg-panel) !important; }
.bg-light, .bg-white { background-color: var(--bg-panel) !important; }
.text-light { color: var(--text-primary) !important; }
.text-dark { color: var(--text-primary) !important; }
.text-muted { color: var(--text-secondary) !important; }
.border-secondary, .border-bottom, .border-top, .border { border-color: var(--border-color) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* Gradients text disabled for cleaner look */
.text-gradient-warning, .text-gradient-info, .text-gradient-success, .text-gradient-secondary, .text-gradient-primary {
    background: none;
    -webkit-text-fill-color: var(--text-primary);
    color: var(--text-primary);
}

/* Buttons */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: 0.5rem 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}
.btn-primary { background-color: var(--accent-primary); border-color: var(--accent-primary); color: #FFF; }
.btn-primary:hover { background-color: var(--accent-primary-hover); border-color: var(--accent-primary-hover); }
.btn-warning { background-color: var(--accent-warning); border-color: var(--accent-warning); color: #FFF; }
.btn-success { background-color: var(--accent-success); border-color: var(--accent-success); color: #FFF; }
.btn-danger { background-color: var(--accent-danger); border-color: var(--accent-danger); color: #FFF; }
.btn-info { background-color: var(--accent-info); border-color: var(--accent-info); color: #FFF; }
.btn-secondary { background-color: var(--bg-surface); border-color: var(--border-color); color: var(--text-primary); }
.btn-secondary:hover { background-color: var(--bg-surface-hover); color: var(--text-primary); border-color: var(--border-color); }
.btn-outline-light, .btn-outline-secondary { color: var(--text-primary); border-color: var(--border-color); }
.btn-outline-light:hover, .btn-outline-secondary:hover { background-color: var(--bg-surface); color: var(--text-primary); }
.btn-outline-success { color: var(--accent-success); border-color: var(--accent-success); }
.btn-outline-success:hover { background-color: var(--accent-success); color: #FFF; }
.btn-outline-warning { color: var(--accent-warning); border-color: var(--accent-warning); }
.btn-outline-warning:hover { background-color: var(--accent-warning); color: #FFF; }
.btn-outline-primary { color: var(--accent-primary); border-color: var(--accent-primary); }
.btn-outline-primary:hover { background-color: var(--accent-primary); color: #FFF; }
.btn-outline-danger { color: var(--accent-danger); border-color: var(--accent-danger); }
.btn-outline-danger:hover { background-color: var(--accent-danger); color: #FFF; }
.btn-outline-info { color: var(--accent-info); border-color: var(--accent-info); }
.btn-outline-info:hover { background-color: var(--accent-info); color: #FFF; }
.rounded-pill { border-radius: 9999px !important; }

/* Disable ugly glows, replace with subtle shadows */
.shadow-glow, .shadow-glow-sm, .shadow-glow-primary, .shadow-glow-info, .shadow-glow-success, .shadow-glow-danger, .shadow-glow-purple {
    box-shadow: none !important;
}

/* Glass Panels / Cards */
.glass-panel, .card {
    background: var(--bg-panel) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-lg) !important;
    backdrop-filter: none; /* Removed for performance, panel background is solid */
    box-shadow: var(--shadow-md) !important;
    overflow: hidden;
}
.card-header {
    background-color: transparent !important;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 1rem 1.25rem !important;
}
.card-footer {
    background-color: transparent !important;
    border-top: 1px solid var(--border-color) !important;
}

/* Inputs & Forms */
.form-control, .input-group-text, .form-select {
    background-color: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    transition: border-color var(--transition-fast);
}
.form-control:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 2px rgba(94, 106, 210, 0.25) !important;
    background-color: var(--bg-surface-hover) !important;
}
.input-group-text { background-color: var(--bg-surface-hover) !important; }

/* Sidebar Navigation */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-panel) !important;
    border-right: 1px solid var(--border-color) !important;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-smooth);
    z-index: 1040;
}
.sidebar .nav-link {
    color: var(--text-secondary) !important;
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    font-weight: 500;
    transition: all var(--transition-fast);
}
.sidebar .nav-link:hover {
    background-color: var(--bg-surface);
    color: var(--text-primary) !important;
}
.sidebar .nav-link.active {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary) !important;
    font-weight: 600;
}
.sidebar .nav-link.active i {
    color: var(--accent-primary);
}
.w-20px { width: 24px; text-align: center; }

/* Login Container */
.login-container {
    background: var(--bg-base);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 1rem;
}
.god-tier-bg {
    background: var(--bg-base); /* Removed radial gradient */
}

/* Tables */
.table {
    color: var(--text-primary) !important;
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    margin-bottom: 0;
}
.table th {
    background-color: var(--bg-surface) !important;
    color: var(--text-secondary) !important;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 1rem;
}
.table td {
    border-bottom: 1px solid var(--border-color) !important;
    padding: 1rem;
    vertical-align: middle;
}
.table tbody tr {
    transition: background-color var(--transition-fast);
}
.table tbody tr:hover {
    background-color: var(--bg-surface) !important;
}
.table-dark { --bs-table-bg: transparent; --bs-table-color: var(--text-primary); }

/* Badges */
.badge {
    padding: 0.35em 0.65em;
    font-weight: 600;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

/* Custom Scrollbar for all platforms */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; border: 2px solid var(--bg-base); }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* Copilot Chat (Gemini) */
#chatContainer {
    background-color: var(--bg-panel);
}
.chat-message {
    max-width: 85%;
    padding: 1rem;
    border-radius: var(--radius-md);
    line-height: 1.5;
}
.chat-message-user {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-bottom-right-radius: 4px;
}
.chat-message-bot {
    background-color: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}
.markdown-body {
    color: var(--text-primary);
    background: transparent !important;
    font-family: inherit;
}
.markdown-body pre {
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
}
.markdown-body code {
    background-color: var(--bg-surface-hover);
    color: var(--accent-info);
    border-radius: 4px;
    padding: 0.2em 0.4em;
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 0.85em;
}

/* Terminal & Code Editor */
#terminal-container {
    background-color: #000;
    border-radius: var(--radius-sm);
    padding: 0.5rem;
}
/* Terminal & iOS Helpers */
.terminal-quick-keys {
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    z-index: 10;
}
.terminal-quick-keys button {
    min-width: 44px;
    height: 38px;
    padding: 2px 8px;
    font-size: 0.85rem;
    font-weight: bold;
    touch-action: manipulation;
}
.xterm-helper-textarea {
    font-size: 16px !important;
    position: absolute !important;
    opacity: 0 !important;
}
#terminal-container {
    width: 100%;
    height: 100%;
    min-height: 280px;
    touch-action: manipulation;
    -webkit-overflow-scrolling: touch;
}
.xterm {
    padding: 4px;
    height: 100%;
}
.xterm-viewport {
    -webkit-overflow-scrolling: touch !important;
    overflow-y: auto !important;
}

/* Modals & Backdrops */
.modal-backdrop-custom {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* Mobile & PWA Optimization */
.mobile-bottom-dock {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--dock-height) + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    z-index: 1060;
    justify-content: space-around;
    align-items: center;
}
[data-bs-theme="dark"] .mobile-bottom-dock {
    background: rgba(14, 16, 21, 0.85);
}

.dock-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    text-decoration: none;
    padding: 6px 0;
    flex: 1;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    touch-action: manipulation;
    transition: color var(--transition-fast);
}

.nav-link, .btn, button, [role="button"] {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.dock-item i {
    font-size: 1.25rem;
    margin-bottom: 4px;
    transition: transform var(--transition-base);
}
.dock-item.active {
    color: var(--accent-primary);
}
.dock-item.active i {
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .mobile-header {
        padding-top: calc(var(--safe-top) + 0.5rem) !important;
        padding-left: calc(var(--safe-left) + 0.75rem) !important;
        padding-right: calc(var(--safe-right) + 0.75rem) !important;
    }
    .sidebar {
        position: fixed;
        left: calc(var(--sidebar-width) * -1);
        height: 100vh;
        height: 100dvh;
        padding-top: var(--safe-top);
        padding-bottom: var(--safe-bottom);
        box-shadow: none;
    }
    .sidebar.sidebar-mobile {
        left: 0;
        box-shadow: var(--shadow-lg);
    }
    .mobile-bottom-dock {
        display: flex;
        height: calc(56px + var(--safe-bottom));
        padding-bottom: var(--safe-bottom);
        padding-left: var(--safe-left);
        padding-right: var(--safe-right);
    }
    .dock-item {
        font-size: 0.65rem;
        padding: 4px 1px;
    }
    .dock-item i {
        font-size: 1.1rem;
        margin-bottom: 2px;
    }
    main {
        padding-bottom: calc(56px + var(--safe-bottom) + 1.25rem) !important;
        padding-top: 1rem !important;
        -webkit-overflow-scrolling: touch;
    }
    .card {
        border-radius: var(--radius-md) !important;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in {
    animation: fadeIn var(--transition-base) forwards;
}


/* Refined Gradients (Subtle & Premium) */
[data-bs-theme="dark"] .text-gradient-warning { background: linear-gradient(90deg, #E3A008, #F1E05A); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="dark"] .text-gradient-info { background: linear-gradient(90deg, #58A6FF, #79C0FF); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="dark"] .text-gradient-success { background: linear-gradient(90deg, #3FB950, #56D364); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="dark"] .text-gradient-primary { background: linear-gradient(90deg, #7A82DA, #A5ADF5); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

[data-bs-theme="light"] .text-gradient-warning { background: linear-gradient(90deg, #9A6700, #B08212); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="light"] .text-gradient-info { background: linear-gradient(90deg, #0969DA, #218BFF); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="light"] .text-gradient-success { background: linear-gradient(90deg, #1F883D, #2EA043); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
[data-bs-theme="light"] .text-gradient-primary { background: linear-gradient(90deg, #4F5EDB, #6B78E1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }