/* Modern Glassmorphic Design System for TrueMobile Roadmap */

:root {
    /* Color Palette */
    --bg-dark: #0a0e17;
    --bg-card: rgba(17, 24, 39, 0.45);
    --bg-hover: rgba(255, 255, 255, 0.05);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Brand Accent Colors */
    --accent-blue: #3b82f6;
    --accent-blue-glow: rgba(59, 130, 246, 0.15);
    --accent-violet: #8b5cf6;
    
    /* Type Colors */
    --color-product: #eab308;      /* Gold */
    --color-initiative: #3b82f6;   /* Blue */
    --color-epic: #10b981;         /* Emerald */
    --color-story: #f59e0b;        /* Amber */
    --color-bug: #ef4444;          /* Red */
    --color-rfc: #a855f7;          /* Purple */
    --color-decision: #ec4899;     /* Pink */
    --color-spike: #06b6d4;        /* Cyan */

    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --shadow-premium: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.05) 0%, transparent 45%);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
    line-height: 1.5;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 24px;
    background: rgba(10, 14, 23, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.3));
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.logo h1 span {
    font-weight: 300;
    color: var(--text-secondary);
}

.search-bar-container {
    position: relative;
    width: 400px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

#search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

#search-input:focus {
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 3px var(--accent-blue-glow);
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-violet));
    color: #fff;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
}

/* Subheader with Filters and Legend */
.app-subheader {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 24px;
    background: rgba(10, 14, 23, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    gap: 16px;
    flex-wrap: wrap;
}

.filters-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-tab {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.filter-tab:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--accent-blue-glow);
    border-color: var(--accent-blue);
    color: #fff;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.2);
}

.legend-container {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    position: relative;
    cursor: help;
}

/* Glassmorphism custom tooltip */
.legend-item::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 150%;
    left: 50%;
    transform: translate(-50%, -10px) scale(0.95);
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #f3f4f6;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: normal;
    text-transform: none;
    white-space: normal;
    width: 240px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    text-align: left;
    line-height: 1.4;
}

/* Tooltip arrow */
.legend-item::before {
    content: '';
    position: absolute;
    top: 120%;
    left: 50%;
    transform: translate(-50%, -10px);
    border-width: 6px;
    border-style: solid;
    border-color: transparent transparent rgba(17, 24, 39, 0.95) transparent;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1), transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
}

.legend-item:hover::after,
.legend-item:hover::before {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
}

/* Workspace Layout */
.app-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.app-sidebar {
    width: 420px;
    border-right: 1px solid var(--border-color);
    background: rgba(10, 14, 23, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
}

.sidebar-header button {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.sidebar-header button:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tree-container {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* Tree Component */
.tree-node-wrapper {
    margin-bottom: 4px;
}

.tree-node {
    position: relative;
    display: flex;
    align-items: center;
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
    user-select: none;
    font-size: 0.9rem;
    gap: 8px;
}

.tree-node:hover {
    background: var(--bg-hover);
}

.tree-node.selected {
    background: rgba(59, 130, 246, 0.12);
    border-left: 3px solid var(--accent-blue);
    color: #fff;
    font-weight: 500;
}

.tree-expander {
    width: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.tree-expander.expanded {
    transform: rotate(90deg);
}

.tree-node-icon {
    font-size: 0.85rem;
    width: 16px;
    text-align: center;
}

.tree-node-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 54px;
}

.tree-children {
    padding-left: 18px;
    margin-top: 2px;
    display: none;
}

.tree-children.visible {
    display: block;
}

/* Tree Node Quick Hover Actions */
.tree-node-actions {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition-smooth);
}

.tree-node:hover .tree-node-actions {
    opacity: 1;
}

.tree-action-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    width: 20px;
    height: 20px;
}

.tree-action-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tree-action-btn.btn-add-child:hover {
    color: var(--color-epic);
    background: rgba(16, 185, 129, 0.1);
}

.tree-action-btn.btn-delete-node:hover {
    color: var(--color-bug);
    background: rgba(239, 68, 68, 0.1);
}

/* Type icons & indicators */
.icon-product { color: var(--color-product); }
.icon-initiative { color: var(--color-initiative); }
.icon-epic { color: var(--color-epic); }
.icon-story { color: var(--color-story); }
.icon-bug { color: var(--color-bug); }
.icon-rfc { color: var(--color-rfc); }
.icon-decision { color: var(--color-decision); }
.icon-spike { color: var(--color-spike); }

/* Details Panel */
.app-details-panel {
    flex: 1;
    background: rgba(17, 24, 39, 0.2);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 40px;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: auto;
    text-align: center;
    max-width: 400px;
}

.empty-icon {
    font-size: 3.5rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Details Content */
.details-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.details-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
}

.title-section {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.node-id-tag {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 1.25rem;
    font-weight: 500;
}

.node-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #fff, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.meta-section {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Badges */
.badge {
    padding: 4px 10px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-type {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
}

.badge-status {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Markdown Rendering Custom Styles */
.markdown-body {
    font-size: 1rem;
    color: #d1d5db;
    line-height: 1.7;
}

.markdown-body h2 {
    font-size: 1.4rem;
    margin: 32px 0 16px;
    color: #fff;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.markdown-body h3 {
    font-size: 1.15rem;
    margin: 24px 0 12px;
    color: #fff;
}

.markdown-body p {
    margin-bottom: 16px;
}

.markdown-body ul, .markdown-body ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.markdown-body li {
    margin-bottom: 6px;
}

.markdown-body code {
    font-family: var(--font-mono);
    background: rgba(255, 255, 255, 0.06);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: #f43f5e;
}

.markdown-body pre {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 24px;
}

.markdown-body pre code {
    background: transparent;
    padding: 0;
    color: #e5e7eb;
}

.markdown-body blockquote {
    border-left: 4px solid var(--accent-blue);
    background: rgba(59, 130, 246, 0.03);
    padding: 12px 20px;
    margin-bottom: 16px;
    border-radius: 0 8px 8px 0;
}

.details-actions {
    display: flex;
    gap: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 32px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: var(--transition-smooth);
}

.modal-card {
    background: rgba(17, 24, 39, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 650px;
    max-width: 90vw;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-close:hover {
    color: #fff;
}

.modal-form {
    padding: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group select option {
    background-color: #111827 !important;
    color: #f3f4f6 !important;
}

.form-group input[readonly], 
.form-group input[disabled], 
.form-group select[disabled] {
    background: rgba(255, 255, 255, 0.02);
    border-color: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-group input:focus:not([readonly]), 
.form-group select:focus:not([disabled]), 
.form-group textarea:focus {
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 3px var(--accent-blue-glow);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 10px;
}

/* Loading and spinners */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-muted);
    padding: 40px 0;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-premium);
    z-index: 1000;
    font-size: 0.9rem;
    font-weight: 500;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--color-epic);
    color: #fff;
}

.toast.error {
    border-left: 4px solid var(--color-bug);
    color: #fff;
}

/* Helper Utilities */
.hidden {
    display: none !important;
}