/* * MAIN STYLESHEET - PC BUILDER 2026
 * Contains: Theme Variables, Layout Fixes, Floating Table, and AI Animations
 */

:root {
  /* Slate Theme (Light Mode Default) */
  --bg-body: #f1f5f9;
  --bg-card: #ffffff; 
  --bg-header: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-color: #0435a6;
  --border-color: #e2e8f0;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --hover-bg: #f8fafc;
  --row-bg: #ffffff;
  
  /* Color Gradients */
  --success-gradient: linear-gradient(135deg, #0435a6 0%, #00d4ff 100%);
  --ai-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%); 
}

/* === DARK MODE VARIABLES === */
[data-theme="dark"] {
  --bg-body: #0f172a; /* Slate 900 */
  --bg-card: #1e293b; /* Slate 800 */
  --bg-header: #1e293b;
  --text-primary: #f8fafc; /* Slate 50 */
  --text-secondary: #94a3b8; /* Slate 400 */
  --accent-color: #38bdf8; /* Sky 400 */
  --border-color: #334155;
  --input-bg: #020617; /* Slate 950 */
  --input-border: #475569;
  --hover-bg: #334155;
  --row-bg: #1e293b;
  
  /* Browser UI Elements */
  color-scheme: dark;

  /* Force Bootstrap overrides for dark mode */
  --bs-body-bg: var(--bg-body);
  --bs-body-color: var(--text-primary);
  --bs-border-color: var(--border-color);
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

.card-title {
    color: var(--text-primary) !important;
}

.text-muted {
    color: var(--text-secondary) !important;
}

.lead {
    color: var(--text-secondary);
}

/* Global utility for background-color in dark mode */
[data-theme="dark"] .bg-body {
    background-color: var(--bg-body) !important;
    color: var(--text-primary) !important;
}

/* === Header === */
header {
  background-color: #040f29; /* Always dark for contrast */
  padding: 1.5rem 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  margin-bottom: 2rem;
  border-bottom: 1px solid #1e293b;
}

.navbar-brand {
  font-weight: 800;
  letter-spacing: -0.5px;
}

.nav-pills .nav-link {
    color: rgba(255,255,255,0.7);
    transition: all 0.2s;
}

.nav-pills .nav-link:hover {
    color: #fff;
    background-color: rgba(255,255,255,0.1);
}

.nav-pills .nav-link.active {
    background-color: rgba(255,255,255,0.2) !important;
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    backdrop-filter: blur(5px);
}

/* === Cards === */
.card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s, border-color 0.3s;
}

.card-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* === Accordion === */
.accordion-item {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

.accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
    box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
    background-color: var(--hover-bg);
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
}

.accordion-button::after {
    filter: grayscale(100%) brightness(0.7);
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1);
}

.accordion-body {
    background-color: var(--bg-body) !important;
    color: var(--text-secondary);
}

/* === Inputs & Controls === */
.form-select, .form-control {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 0.7rem 1rem;
}

.form-select:focus, .form-control:focus {
    background-color: var(--input-bg);
    border-color: var(--accent-color);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(4, 53, 166, 0.15);
}

.form-control[readonly] {
    background-color: var(--hover-bg);
    color: var(--text-primary);
    opacity: 1;
}

/* Specific Style for Price Inputs */
.price-input {
    min-width: 130px !important;
    font-family: 'Courier New', monospace;
    font-weight: 800;
}

/* === Modern Floating Table === */
.table-responsive {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE 10+ */
}

.table-responsive::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    border-collapse: separate; 
    border-spacing: 0 8px; 
    margin-bottom: 0;
}

.table thead th {
  background-color: transparent;
  color: var(--text-secondary);
  border: none;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0 1rem 0.5rem 1rem;
}

.table tbody tr {
    background-color: var(--row-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), 
                box-shadow 0.2s ease, 
                background-color 0.2s;
    border-radius: 10px;
}

.table tbody tr td:first-child { border-top-left-radius: 10px; border-bottom-left-radius: 10px; }
.table tbody tr td:last-child { border-top-right-radius: 10px; border-bottom-right-radius: 10px; }

.table td {
    vertical-align: middle;
    border: none;
    padding: 1rem;
}

.table tbody tr:hover { 
    transform: scale(1.01) translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    background-color: var(--input-bg); 
    z-index: 10;
    position: relative;
}

.table .form-select, .table .form-control {
    border: 1px solid var(--border-color);
}

/* === AI Assistant Area === */
.ai-card {
  background-color: var(--bg-card); 
  border: 1px solid #6366f1; /* Identifiable minimalist border */
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.1);
  position: relative;
  z-index: 1;
}

.ai-response-box {
  background-color: var(--bg-body);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-left: 4px solid #6366f1;
  padding: 1.5rem;
  border-radius: 8px;
  max-height: 300px;
  overflow-y: auto;
}

/* === Loading Animation (Newton's Cradle) === */
.ai-loading {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px 0;
}

.newtons-cradle {
 --uib-size: 50px;
 --uib-speed: 1.2s;
 --uib-color: var(--accent-color);
 position: relative;
 display: flex;
 align-items: center;
 justify-content: center;
 width: var(--uib-size);
 height: var(--uib-size);
}

.newtons-cradle__dot {
 position: relative;
 display: flex;
 align-items: center;
 height: 100%;
 width: 25%;
 transform-origin: center top;
}

.newtons-cradle__dot::after {
 content: '';
 display: block;
 width: 100%;
 height: 25%;
 border-radius: 50%;
 background-color: var(--uib-color);
}

.newtons-cradle__dot:first-child {
 animation: swing var(--uib-speed) linear infinite;
}

.newtons-cradle__dot:last-child {
 animation: swing2 var(--uib-speed) linear infinite;
}

@keyframes swing {
 0% { transform: rotate(0deg); animation-timing-function: ease-out; }
 25% { transform: rotate(70deg); animation-timing-function: ease-in; }
 50% { transform: rotate(0deg); animation-timing-function: linear; }
}

@keyframes swing2 {
 0% { transform: rotate(0deg); animation-timing-function: linear; }
 50% { transform: rotate(0deg); animation-timing-function: ease-out; }
 75% { transform: rotate(-70deg); animation-timing-function: ease-in; }
}

/* === Sticky Footer Bar === */
.sticky-price-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -5px 25px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .sticky-price-bar {
    background: rgba(15, 23, 42, 0.85);
    border-color: var(--border-color);
}

.total-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.total-price {
  font-size: 2.5rem; font-weight: 800;
  background: var(--success-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* === Buttons & Interactions === */
.btn-link-custom {
  background-color: var(--bg-body);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.2s;
}

.btn-link-custom:hover {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* === DARK MODE TOGGLE BUTTON === */
.toggle-btn {
  --bg: #e8e8e8;
  --fg: #212121;
  --dimensions: 35px;
  background-color: var(--bg);
  border-radius: 10px;
  width: var(--dimensions);
  height: var(--dimensions);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  cursor: pointer;
  transition: background-color 0.4s ease;
  outline: none;
}

.toggle-btn .main-circle {
  --dimensions: 14px;
  width: var(--dimensions);
  height: var(--dimensions);
  background-color: var(--fg);
  border-radius: 50%;
  position: absolute;
  transition: transform 0.4s ease; 
  z-index: 2;
}

.toggle-btn .main-circle::after {
  content: "";
  background-color: var(--bg);
  border-radius: 50%;
  --dimensions: 11px;
  width: var(--dimensions);
  height: var(--dimensions);
  position: absolute;
  top: -2px;
  right: -2px;
  transform-origin: right top;
  transform: scale(0);
  transition: transform 0.4s ease, background-color 0.4s ease;
}

.toggle-btn .sun-rays {
  display: grid;
  place-items: center;
  transition: transform 0.4s ease; 
  z-index: 1;
}

.toggle-btn .sun-rays::after,
.toggle-btn .sun-rays::before {
  --width: 2px;
  --height: 5px;
  width: var(--width);
  height: var(--height);
  background-color: var(--fg);
  position: absolute;
  box-shadow: 0 11px 0 var(--fg), 0 -11px 0 var(--fg); 
}

.toggle-btn .sun-rays::after { content: ""; transform: rotate(120deg); }
.toggle-btn .sun-rays::before { content: ""; transform: rotate(240deg); }

/* Toggle Button Dark State */
[data-theme="dark"] .toggle-btn { --bg: #212121; --fg: #e8e8e8; }
[data-theme="dark"] .toggle-btn .main-circle { transform: scale(1.3); }
[data-theme="dark"] .toggle-btn .main-circle::after { transform: scale(1); background-color: var(--bg); }
[data-theme="dark"] .toggle-btn .sun-rays { transform: scale(0) rotate(90deg); }

/* Animation Utility */
.price-update-anim { animation: pulse 0.3s ease-in-out; }
@keyframes pulse { 50% { transform: scale(1.05); } }

footer { margin-top: auto; }

/* === Tom Select Customization (Searchable Dropdowns) === */
.ts-control {
    border-radius: 8px;
    padding: 0.7rem 1rem;
    border-color: var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
}
.ts-control input {
    color: var(--text-primary);
}
.ts-dropdown {
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.ts-dropdown .option {
    padding: 0.5rem 1rem;
}
.ts-dropdown .active {
    background-color: var(--hover-bg);
    color: var(--accent-color);
}

/* Tom Select Dark Mode Fixes */
[data-theme="dark"] .ts-control {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}
[data-theme="dark"] .ts-dropdown {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}
[data-theme="dark"] .ts-dropdown .active {
    background-color: var(--hover-bg);
    color: var(--accent-color);
}
[data-theme="dark"] .ts-control input::placeholder {
    color: var(--text-secondary);
}