/* styles.css */
/* Thiết kế giao diện cống hộp cao cấp, hiện đại, tối ưu cho kỹ sư cầu đường */

:root {
    --bg-main: #0b0f19;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-input: #1f2937;
    --border-color: rgba(255, 255, 255, 0.08);

    --color-text-main: #f3f4f6;
    --color-text-muted: #9ca3af;

    --color-primary: #0d9488;
    /* Teal */
    --color-primary-hover: #0f766e;
    --color-secondary: #3b82f6;
    /* Blue */
    --color-accent: #f59e0b;
    /* Amber */

    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --bg-main: #f3f4f6;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-input: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);

    --color-text-main: #111827;
    --color-text-muted: #6b7280;

    --color-primary: #0d9488;
    --color-primary-hover: #0f766e;
    --color-secondary: #2563eb;
    --color-accent: #d97706;

    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
}

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

body {
    background-color: var(--bg-main);
    color: var(--color-text-main);
    font-family: var(--font-family);
    line-height: 1.5;
    background-image: radial-gradient(circle at 10% 20%, rgba(13, 148, 136, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
    transition: background-color 0.3s ease;
}

/* Container */
.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 100vh;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.logo-section h1 {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-section p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.header-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

/* Theme Toggle Button */
.btn-icon {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--color-text-main);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Dashboard Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 460px 1fr;
    gap: 20px;
    flex: 1;
}

@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Sidebar / Input Column */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Sidebar Tabs */
.sidebar-tabs {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: 12px;
    gap: 4px;
}

.sidebar-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 8px 12px;
    font-family: var(--font-family);
    color: var(--color-text-muted);
    font-weight: 700;
    font-size: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-tab-btn:hover {
    color: var(--color-text-main);
    background: rgba(255, 255, 255, 0.02);
}

.sidebar-tab-btn.active {
    color: white;
    background: var(--color-secondary);
    box-shadow: 0 4px 10px -3px rgba(59, 130, 246, 0.3);
}

/* Sidebar Panes */
.sidebar-pane {
    display: none;
    flex-direction: column;
    gap: 15px;
}

.sidebar-pane.active {
    display: flex;
}

/* Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: rgba(13, 148, 136, 0.2);
}

.card h2 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    color: var(--color-text-main);
}

.card h2 svg {
    color: var(--color-primary);
}

/* Group Subtitle in Rebars tab */
.form-group-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 10px;
    margin-bottom: 8px;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 3px;
}

/* Form Styling */
.form-group {
    margin-bottom: 10px;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

label {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.form-group label {
    min-height: 28px;
    display: flex;
    align-items: flex-end;
}

input[type="number"],
input[type="text"],
select {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 7px 10px;
    font-family: var(--font-family);
    color: var(--color-text-main);
    font-size: 0.85rem;
    font-weight: 500;
    outline: none;
    transition: var(--transition-smooth);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.2);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #0f766e);
    border: none;
    color: white;
    padding: 12px 20px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--font-family);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 15px -3px rgba(13, 148, 136, 0.4);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -3px rgba(13, 148, 136, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--color-text-main);
    padding: 8px 15px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-family: var(--font-family);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

/* Main Display Area */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Tabs */
.tabs-container {
    display: flex;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 5px;
    border-radius: 12px;
    gap: 5px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 10px 15px;
    font-family: var(--font-family);
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.tab-btn:hover {
    color: var(--color-text-main);
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    color: white;
    background: var(--color-primary);
    box-shadow: 0 4px 10px -3px rgba(13, 148, 136, 0.3);
}

/* Tab Panels */
.tab-panel {
    display: none;
    flex-direction: column;
    gap: 20px;
}

.tab-panel.active {
    display: flex;
}

/* Canvas Viewport */
.canvas-viewport {
    background: #111827;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    min-height: 520px;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    max-height: 600px;
    image-rendering: -webkit-optimize-contrast;
}

/* Canvas Toolbar */
.canvas-toolbar {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    gap: 10px;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(5px);
    padding: 5px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* Tables and Reports */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(17, 24, 39, 0.3);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    text-align: left;
}

th,
td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background-color: rgba(255, 255, 255, 0.01);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 600;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Calculations Report Formatting */
.report-doc {
    font-family: var(--font-family);
    color: var(--color-text-main);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.report-section {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.report-section:last-child {
    border-bottom: none;
}

.report-section h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.report-formula {
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--color-primary);
    padding: 10px 15px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    margin: 10px 0;
    border-radius: 0 8px 8px 0;
    color: #34d399;
}

.report-value-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 6px 0;
    border-bottom: 1px dotted rgba(255, 255, 255, 0.05);
}

.report-value-row:last-child {
    border-bottom: none;
}

.report-value-row .val-name {
    color: var(--color-text-muted);
}

.report-value-row .val-num {
    font-weight: 600;
}

.report-title {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--color-text-main);
}

/* Table text alignments */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.fw-semibold {
    font-weight: 600;
}

/* Light theme canvas override */
[data-theme="light"] .canvas-viewport {
    background: #f9fafb;
    border-color: rgba(0, 0, 0, 0.1);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Sidebar overflow scroll */
.sidebar {
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-right: 4px;
}

/* Responsive input range slider */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--bg-input);
    border-radius: 4px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-smooth);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(13, 148, 136, 0.5);
}

/* 2D/3D Toggle styling */
.btn-group-toggle {
    display: flex;
    background: var(--bg-main);
    padding: 2px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.btn-toggle {
    padding: 4px 10px;
    font-size: 0.75rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: transparent;
    color: var(--color-text-muted);
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-toggle.active {
    background: var(--color-primary);
    color: white;
}

.form-group-subtitle {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-muted);
    margin-top: 8px;
    margin-bottom: 4px;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.02em;
}

/* ViewCube Navigator Layout */
.view-cube {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    display: grid;
    grid-template-columns: 26px 38px 26px;
    grid-template-rows: 26px 38px 26px;
    gap: 4px;
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    padding: 6px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.cube-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(31, 41, 55, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: var(--font-family);
    transition: var(--transition-smooth);
    position: relative;
    user-select: none;
}

[data-theme="light"] .cube-btn {
    background: rgba(243, 244, 246, 0.9);
}

.cube-btn:hover {
    background: rgba(13, 148, 136, 0.25);
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.cube-btn.active {
    background: var(--color-primary);
    color: white !important;
    border-color: var(--color-primary);
    box-shadow: 0 0 8px rgba(13, 148, 136, 0.6);
}

/* Accented borders matching navigation cube standards */
.top-edge {
    border-top: 2px solid var(--color-secondary) !important;
}

.bottom-edge {
    border-bottom: 2px solid var(--color-secondary) !important;
}

.left-edge {
    border-left: 2px solid var(--color-secondary) !important;
}

.right-edge {
    border-right: 2px solid var(--color-secondary) !important;
}

.center-sq {
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Rotations for diagonal ISO arrows */
.iso-btn svg {
    width: 14px;
    height: 14px;
    transition: var(--transition-smooth);
}

.rot-90 svg {
    transform: rotate(90deg);
}

.rot-180 svg {
    transform: rotate(180deg);
}

.rot-270 svg {
    transform: rotate(270deg);
}