/* ==============================================================================
   Pakistan Mobile Load & Balance Tax Calculator Stylesheet
   SyedsWorld.com - Modern SaaS Performance UI (Responsive, Mobile-First)
   ============================================================================== */

:root {
  --tax-jazz: #e11d48;
  --tax-jazz-light: #fff1f2;
  --tax-jazz-dark: #881337;
  --tax-zong: #10b981;
  --tax-zong-light: #ecfdf5;
  --tax-zong-dark: #064e3b;
  --tax-telenor: #0ea5e9;
  --tax-telenor-light: #f0f9ff;
  --tax-telenor-dark: #0c4a6e;
  --tax-ufone: #f97316;
  --tax-ufone-light: #fff7ed;
  --tax-ufone-dark: #7c2d12;

  --load-card-bg: var(--bg-secondary, #ffffff);
  --load-border: var(--border-color, #e2e8f0);
  --load-text: var(--text-primary, #0f172a);
  --load-muted: var(--text-secondary, #64748b);
  --load-input-bg: var(--bg-tertiary, #f8fafc);
  --load-radius: 14px;
}

[data-theme="dark"] {
  --tax-jazz-light: rgba(225, 29, 72, 0.15);
  --tax-zong-light: rgba(16, 185, 129, 0.15);
  --tax-telenor-light: rgba(14, 165, 233, 0.15);
  --tax-ufone-light: rgba(249, 115, 22, 0.15);
  --load-card-bg: var(--bg-secondary, #1e293b);
  --load-border: var(--border-color, #334155);
  --load-text: var(--text-primary, #f8fafc);
  --load-muted: var(--text-secondary, #94a3b8);
  --load-input-bg: var(--bg-tertiary, #0f172a);
}

/* Page Header / Hero */
.load-hero {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 2.5rem;
}

.load-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.load-hero h1 {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  color: var(--load-text);
}

.load-hero p {
  font-size: 1.05rem;
  color: var(--load-muted);
  line-height: 1.6;
}

/* Main Layout Grid (Calculator + Packages Sidebar) */
.load-workbench-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 1024px) {
  .load-workbench-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

/* Main Calculator Card */
.calc-card-main {
  background: var(--load-card-bg);
  border: 1px solid var(--load-border);
  border-radius: var(--load-radius);
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Mode Switcher Tabs */
.mode-switcher-tabs {
  display: flex;
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 999px;
  padding: 0.35rem;
  margin-bottom: 1.75rem;
  gap: 0.35rem;
}

.mode-tab-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--load-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.mode-tab-btn.active {
  background: var(--load-card-bg);
  color: var(--load-text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Network Selector Badges */
.network-selector-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--load-text);
  margin-bottom: 0.65rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 540px) {
  .network-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.network-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.85rem 0.5rem;
  background: var(--load-input-bg);
  border: 2px solid var(--load-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--load-text);
  font-weight: 700;
  font-size: 0.85rem;
}

.network-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.5);
}

.network-btn.active {
  border-color: currentColor;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.network-btn[data-network="jazz"].active {
  color: var(--tax-jazz);
  background: var(--tax-jazz-light);
  border-color: var(--tax-jazz);
}

.network-btn[data-network="zong"].active {
  color: var(--tax-zong);
  background: var(--tax-zong-light);
  border-color: var(--tax-zong);
}

.network-btn[data-network="telenor"].active {
  color: var(--tax-telenor);
  background: var(--tax-telenor-light);
  border-color: var(--tax-telenor);
}

.network-btn[data-network="ufone"].active {
  color: var(--tax-ufone);
  background: var(--tax-ufone-light);
  border-color: var(--tax-ufone);
}

.network-icon-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 900;
  color: #ffffff;
}

.jazz-bg { background: linear-gradient(135deg, #e11d48, #f59e0b); }
.zong-bg { background: linear-gradient(135deg, #10b981, #ec4899); }
.telenor-bg { background: linear-gradient(135deg, #0ea5e9, #0284c7); }
.ufone-bg { background: linear-gradient(135deg, #f97316, #ea580c); }

/* Amount Input Box */
.load-input-wrap {
  margin-bottom: 1.25rem;
}

.load-input-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--load-text);
  margin-bottom: 0.45rem;
}

.tax-rate-toggle {
  font-size: 0.78rem;
  color: var(--load-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.input-currency-field {
  position: relative;
  display: flex;
  align-items: center;
}

.currency-prefix {
  position: absolute;
  left: 1.15rem;
  font-weight: 800;
  color: var(--load-muted);
  font-size: 1.15rem;
  pointer-events: none;
}

.load-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3.5rem;
  background: var(--load-input-bg);
  border: 2px solid var(--load-border);
  border-radius: 12px;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--load-text);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.load-input:focus {
  border-color: #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

/* Preset Chips */
.preset-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.75rem;
}

.preset-chip {
  padding: 0.4rem 0.85rem;
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--load-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-chip:hover {
  background: var(--load-card-bg);
  color: var(--load-text);
  border-color: #6366f1;
}

/* Output Display Cards Grid */
.output-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.output-metric-card {
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 12px;
  padding: 1.15rem 1.25rem;
}

.output-metric-card .label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--load-muted);
  margin-bottom: 0.35rem;
}

.output-metric-card .val {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--load-text);
  line-height: 1.2;
}

.output-metric-card .sub {
  display: block;
  font-size: 0.72rem;
  color: var(--load-muted);
  margin-top: 0.3rem;
}

.tax-badge-adjustable {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-top: 0.25rem;
}

/* Hero Balance Output Box */
.hero-balance-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
  border: 2px solid rgba(99, 102, 241, 0.35);
  border-radius: 16px;
  padding: 1.75rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-balance-box .hero-label {
  font-size: 0.84rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6366f1;
  margin-bottom: 0.35rem;
}

.hero-balance-box .hero-amount {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 900;
  color: var(--load-text);
  line-height: 1.1;
  margin-bottom: 0.5rem;
  font-family: inherit;
}

.hero-balance-box .hero-notice {
  font-size: 0.85rem;
  color: var(--load-muted);
  max-width: 440px;
  margin: 0 auto 1.25rem;
}

.hero-action-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
}

.btn-copy-load {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  background: #6366f1;
  color: #ffffff;
  border: none;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy-load:hover {
  background: #4f46e5;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.copy-toast {
  font-size: 0.82rem;
  font-weight: 700;
  color: #10b981;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.copy-toast.show {
  opacity: 1;
}

/* Tax Accordion */
.tax-accordion {
  margin-top: 1.75rem;
  border-top: 1px solid var(--load-border);
  padding-top: 1.25rem;
}

.tax-accordion details {
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 10px;
  padding: 0.85rem 1rem;
}

.tax-accordion summary {
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--load-text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tax-accordion summary::-webkit-details-marker {
  display: none;
}

.tax-accordion summary::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 700;
  color: #6366f1;
}

.tax-accordion details[open] summary::after {
  content: "−";
}

.tax-accordion-body {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: var(--load-muted);
  line-height: 1.6;
}

/* ==============================================================================
   PACKAGES SIDEBAR / DRAWER
   ============================================================================== */
.packages-sidebar-card {
  background: var(--load-card-bg);
  border: 1px solid var(--load-border);
  border-radius: var(--load-radius);
  padding: 1.75rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--load-border);
}

.sidebar-header h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--load-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: #10b981;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10b981;
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

/* Category Filter Tabs */
.pkg-category-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.65rem;
  margin-bottom: 1rem;
}

.pkg-cat-btn {
  padding: 0.35rem 0.75rem;
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--load-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.pkg-cat-btn.active {
  background: var(--load-text);
  color: var(--load-card-bg);
  border-color: var(--load-text);
}

/* Package Cards List */
.packages-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  max-height: 600px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.pkg-card {
  background: var(--load-input-bg);
  border: 1px solid var(--load-border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  transition: all 0.2s ease;
  position: relative;
}

.pkg-card:hover {
  border-color: #6366f1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.pkg-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.pkg-name {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--load-text);
}

.pkg-validity {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: rgba(99, 102, 241, 0.12);
  color: #6366f1;
}

.pkg-features-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.feat-chip {
  font-size: 0.72rem;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: var(--load-card-bg);
  border: 1px solid var(--load-border);
  color: var(--load-text);
  font-weight: 600;
}

.pkg-pricing-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--load-border);
  margin-bottom: 0.75rem;
}

.pkg-balance-needed {
  font-size: 0.78rem;
  color: var(--load-muted);
}

.pkg-balance-needed strong {
  color: var(--load-text);
}

.pkg-load-needed {
  font-size: 0.88rem;
  font-weight: 800;
  color: #10b981;
}

.pkg-action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.btn-pkg-calc {
  padding: 0.45rem 0.65rem;
  background: rgba(99, 102, 241, 0.12);
  color: #6366f1;
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.btn-pkg-calc:hover {
  background: #6366f1;
  color: #ffffff;
}

.btn-pkg-ussd {
  padding: 0.45rem 0.65rem;
  background: var(--load-card-bg);
  color: var(--load-text);
  border: 1px solid var(--load-border);
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}

.btn-pkg-ussd:hover {
  background: var(--load-input-bg);
  border-color: #6366f1;
}

/* ==============================================================================
   EDUCATIONAL GUIDE ARTICLE STYLES
   ============================================================================== */
.load-guide-article {
  background: var(--load-card-bg);
  border: 1px solid var(--load-border);
  border-radius: var(--load-radius);
  padding: 2.5rem;
  line-height: 1.8;
  margin-top: 2rem;
}

.load-guide-header {
  border-bottom: 1px solid var(--load-border);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}

.load-guide-header h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
  font-weight: 900;
  color: var(--load-text);
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.load-guide-meta {
  font-size: 0.85rem;
  color: var(--load-muted);
}

.load-guide-article h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--load-text);
  margin: 2.25rem 0 1rem;
}

.load-guide-article h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #6366f1;
  margin: 1.5rem 0 0.75rem;
}

.load-guide-article p {
  color: var(--load-muted);
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.load-guide-article ul, .load-guide-article ol {
  color: var(--load-muted);
  margin: 0 0 1.5rem 1.5rem;
}

.load-guide-article li {
  margin-bottom: 0.5rem;
}

.load-callout {
  background: var(--load-input-bg);
  border-left: 4px solid #6366f1;
  border-radius: 0 10px 10px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.load-callout p {
  margin: 0;
  color: var(--load-text);
  font-weight: 600;
}

.load-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.load-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.load-table th, .load-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--load-border);
}

.load-table th {
  background: var(--load-input-bg);
  color: var(--load-text);
  font-weight: 700;
}

.load-table td {
  color: var(--load-muted);
}