/* ==========================================================================
   Samsung One UI 6 / 7 Aesthetic Design System
   Paleta:
     Light: #F4F6F9 (bg), #FFFFFF (card), #1A1D20 (text), #767B82 (subtext), #E5E7EB (border)
     Dark:  #121316 (bg), #1C1D21 (card), #ECEEF1 (text), #9CA3AF (subtext), #2C2D30 (border)
     Accent: #0381FE (Samsung Blue), #05C46B (Success Green), #FFA801 (Warning), #FA3E3E (Danger)
   ========================================================================== */

:root {
  /* Colors - Light Mode default */
  --bg-primary: #F4F6F9;
  --card-bg: #FFFFFF;
  --card-bg-elevated: #FDFDFE;
  --card-subtle: #F8F9FA;
  --text-primary: #1A1D20;
  --text-secondary: #767B82;
  --text-muted: #9CA3AF;
  --border-color: #E5E7EB;
  --border-subtle: #F1F3F5;

  /* Accents */
  --accent-blue: #0381FE;
  --accent-blue-hover: #026BD1;
  --accent-blue-light: rgba(3, 129, 254, 0.1);
  --accent-green: #05C46B;
  --accent-green-light: rgba(5, 196, 107, 0.12);
  --accent-warning: #FFA801;
  --accent-warning-light: rgba(255, 168, 1, 0.12);
  --accent-danger: #FA3E3E;
  --accent-danger-light: rgba(250, 62, 62, 0.12);

  /* Pills & Controls */
  --pill-bg: #E9ECEF;
  --pill-text: #495057;
  --pill-hover: #DEE2E6;

  /* Squircles & Radii */
  --radius-hero: 28px;
  --radius-card: 24px;
  --radius-element: 16px;
  --radius-badge: 10px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.03);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-elevated: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-glow-blue: 0 4px 16px rgba(3, 129, 254, 0.3);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-primary: #121316;
  --card-bg: #1C1D21;
  --card-bg-elevated: #24252A;
  --card-subtle: #17181B;
  --text-primary: #ECEEF1;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --border-color: #2C2D30;
  --border-subtle: #232428;

  --pill-bg: #27282D;
  --pill-text: #A0A5AD;
  --pill-hover: #32343A;

  --accent-blue-light: rgba(3, 129, 254, 0.18);
  --accent-green-light: rgba(5, 196, 107, 0.18);
  --accent-warning-light: rgba(255, 168, 1, 0.18);
  --accent-danger-light: rgba(250, 62, 62, 0.18);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* CSS Reset & Global Typography */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  padding: 0 0 64px 0;
}

/* Layout Container */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

/* One UI Top Header - Mobile friendly & Spacious */
.oneui-header {
  padding: 36px 0 20px 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

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

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-element);
  background: linear-gradient(135deg, #0381FE 0%, #0056B3 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: var(--shadow-glow-blue);
  flex-shrink: 0;
}

.brand-icon svg {
  width: 24px;
  height: 24px;
}

.brand-titles h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
}

.brand-titles p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* One UI Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow-blue);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
}

.btn-outline {
  background-color: var(--card-bg);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  background-color: var(--pill-bg);
}

.btn-icon-only {
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-pill);
}

.btn-icon-only svg {
  width: 20px;
  height: 20px;
}

/* Sync status subtitle bar */
.status-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 8px rgba(5, 196, 107, 0.6);
}

/* Month Selector Carousel - Horizontal Scrollable Pills */
.month-section {
  margin: 16px 0 24px 0;
}

.month-carousel {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 4px 12px 4px;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.month-carousel::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.month-pill {
  flex-shrink: 0;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  background-color: var(--pill-bg);
  color: var(--pill-text);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.month-pill:hover {
  background-color: var(--pill-hover);
  color: var(--text-primary);
}

.month-pill.active {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow-blue);
}

/* Squircles & Cards */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 24px;
  transition: all var(--transition-normal);
}

/* Hero Settlement Card */
.hero-settlement-card {
  border-radius: var(--radius-hero);
  background: var(--card-bg);
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-elevated);
  padding: 32px 28px;
}

.hero-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--accent-blue-light);
  color: var(--accent-blue);
}

.hero-pill-badge.green {
  background-color: var(--accent-green-light);
  color: var(--accent-green);
}

.hero-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.hero-balance-wrap {
  margin: 16px 0 24px 0;
}

.hero-amount {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-statement {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.hero-statement strong {
  color: var(--text-primary);
}

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

.btn-hero-copy {
  padding: 14px 26px;
  font-size: 1rem;
  font-weight: 700;
}

/* Utilities Grid (2 columns on desktop, 1 on mobile) */
.utilities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .utilities-grid {
    grid-template-columns: 1fr;
  }
}

.utility-card {
  display: flex;
  flex-direction: column;
}

.card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 20px;
}

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

.utility-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-element);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-box-edp {
  background-color: rgba(3, 129, 254, 0.12);
  color: var(--accent-blue);
}

.icon-box-energisa {
  background-color: rgba(255, 168, 1, 0.15);
  color: #E67E22;
}

.utility-identity h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.utility-identity span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green {
  background-color: var(--accent-green-light);
  color: var(--accent-green);
}

.badge-warning {
  background-color: var(--accent-warning-light);
  color: #D97706;
}

.badge-info {
  background-color: var(--accent-blue-light);
  color: var(--accent-blue);
}

.badge-danger {
  background-color: var(--accent-danger-light);
  color: var(--accent-danger);
}

/* Card Main Figure */
.figure-block {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.figure-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.figure-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* Card Metrics List */
.metrics-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.metric-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.metric-name {
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-val {
  color: var(--text-primary);
  font-weight: 600;
}

/* Solar highlight box inside EDP card */
.solar-highlight-box {
  margin-top: 16px;
  background-color: var(--card-subtle);
  border-radius: var(--radius-element);
  padding: 14px;
  border: 1px solid var(--border-subtle);
}

.solar-highlight-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 8px;
}

/* Bandeira Tarifaria Badge inside Energisa */
.bandeira-pill {
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
}

.bandeira-verde {
  background-color: rgba(5, 196, 107, 0.15);
  color: #059669;
}

.bandeira-amarela {
  background-color: rgba(255, 168, 1, 0.18);
  color: #D97706;
}

.bandeira-vermelha {
  background-color: rgba(250, 62, 62, 0.18);
  color: #DC2626;
}

/* Calculation Audit Accordion (Memória de Cálculo) */
.accordion-card {
  margin-bottom: 24px;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  color: var(--text-primary);
}

.accordion-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.accordion-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-element);
  background-color: var(--pill-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
}

.accordion-title-wrap h3 {
  font-size: 1.125rem;
  font-weight: 700;
}

.accordion-title-wrap p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.chevron-icon {
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: transform var(--transition-normal);
}

.accordion-card.open .chevron-icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  animation: fadeIn var(--transition-fast) ease-out;
}

.accordion-card.open .accordion-content {
  display: block;
}

.math-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.math-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  border-radius: var(--radius-element);
  background-color: var(--card-subtle);
  border: 1px solid var(--border-subtle);
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--accent-blue);
  color: #FFFFFF;
  font-size: 0.8125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-info {
  flex-grow: 1;
}

.step-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.step-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.step-val {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.step-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Modal One UI - SMS Validation */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: 20px;
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-elevated);
  max-width: 440px;
  width: 100%;
  padding: 32px 28px;
  transform: translateY(20px) scale(0.96);
  transition: all var(--transition-normal);
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-body {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.sms-input-group {
  margin: 20px 0;
}

.sms-input {
  width: 100%;
  padding: 14px 18px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-align: center;
  border-radius: var(--radius-element);
  border: 1.5px solid var(--border-color);
  background-color: var(--card-subtle);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.sms-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px var(--accent-blue-light);
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.modal-actions .btn {
  width: 100%;
  padding: 12px;
}

/* Toast Notification (Floating Pill) */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(26, 29, 32, 0.92);
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  font-size: 0.9375rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 9999;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: none;
}

[data-theme="dark"] .toast-container {
  background: rgba(44, 45, 48, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.toast-container.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Spinner Loader */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #FFFFFF;
  animation: spin 0.8s linear infinite;
}

.spinner-blue {
  border-color: rgba(3, 129, 254, 0.3);
  border-top-color: var(--accent-blue);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Empty / Loading State */
.loading-view {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
}

.loading-view .spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto 16px auto;
  border-width: 3px;
}