@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Exo+2:wght@300;400;600;700;900&display=swap');


:root {

  --bg:        #050c15;
  --bg2:       #080f1c;
  --panel:     #0a1628;
  --panel2:    #0d1e35;
  --border:    rgba(0, 200, 255, 0.12);
  --border2:   rgba(0, 200, 255, 0.22);
  --neon:      #00c8ff;
  --neon2:     #00ff9f;
  --neon3:     #ff4f7b;
  --text:      #e0f0ff;
  --text2:     #7ba8c8;
  --text3:     #3a6080;
  --mono:      'Share Tech Mono', monospace;
  --display:   'Exo 2', sans-serif;
  --radius:    12px;
  --radius2:   8px;
  --glow:      0 0 20px rgba(0, 200, 255, 0.15);
  --glow-strong: 0 0 40px rgba(0, 200, 255, 0.25);
}




body.light {

  --bg:        #f0f4f8;
  --bg2:       #e4eaf2;
  --panel:     #ffffff;
  --panel2:    #f5f8fc;
  --border:    rgba(0, 120, 180, 0.15);
  --border2:   rgba(0, 120, 180, 0.3);
  --neon:      #0078b4;
  --neon2:     #00a86b;
  --neon3:     #d63060;
  --text:      #0d1e35;
  --text2:     #4a6080;
  --text3:     #9ab0c8;
  --glow:      0 4px 20px rgba(0, 120, 180, 0.1);
  --glow-strong: 0 8px 40px rgba(0, 120, 180, 0.15);
}


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

body {

  font-family: var(--display);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}



.bg-grid {

  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}


.bg-glow {

  position: fixed;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(0,200,255,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}


body.light .bg-grid {

  background-image:
    linear-gradient(rgba(0,120,180,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,120,180,0.05) 1px, transparent 1px);
}

body.light .bg-glow {

  background: radial-gradient(ellipse, rgba(0,120,180,0.08) 0%, transparent 70%);
}


.app-shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}


.sidebar {

  width: 240px;
  flex-shrink: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 28px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  backdrop-filter: blur(10px);
}

.logo {

  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px 28px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.logo-icon {

  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--neon), var(--neon2));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(0,200,255,0.4);
}

.logo-icon svg {

  width: 20px;
  height: 20px;
  stroke: #000;
}

.logo-text {

  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, var(--neon), var(--neon2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


.nav {
  
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-btn {

  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius2);
  color: var(--text2);
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.nav-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: stroke 0.2s;
}

.nav-btn:hover {
  background: rgba(0,200,255,0.07);
  color: var(--text);
  border-color: var(--border);
}

.nav-btn.active {
  background: rgba(0,200,255,0.1);
  border-color: var(--border2);
  color: var(--neon);
  box-shadow: inset 0 0 20px rgba(0,200,255,0.05);
}

.nav-btn.active svg { stroke: var(--neon); }


.sidebar-footer {
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.power-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text3);
  padding: 0 8px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon2);
  box-shadow: 0 0 8px var(--neon2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}


.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0 32px 40px;
}


.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.topbar-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
}

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

.user-chip {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--neon);
  background: rgba(0,200,255,0.08);
  border: 1px solid var(--border2);
  padding: 6px 12px;
  border-radius: 20px;
}

.mode-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.mode-btn:hover { border-color: var(--neon); color: var(--neon); }
.mode-btn svg { width: 16px; height: 16px; }


.section { display: none; animation: fadeIn 0.3s ease; }
.section.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}


.hero-stats {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 36px;
}

.stat-card.accent-month {
  border-color: rgba(0, 255, 159, 0.25);
  background: linear-gradient(135deg, rgba(0,255,159,0.05), transparent);
}

.stat-card.accent-month::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon2), var(--neon));
}

.stat-card.accent-month .stat-value { color: var(--neon2); }

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  border-color: var(--border2);
  box-shadow: var(--glow);
}

.stat-card.primary {
  border-color: rgba(0,200,255,0.25);
  background: linear-gradient(135deg, rgba(0,200,255,0.05), transparent);
}

.stat-card.primary::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), var(--neon2));
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 10px;
}

.stat-value {
  font-family: var(--mono);
  font-size: 2rem;
  color: var(--neon);
  line-height: 1;
}

.stat-value.small { font-size: 1.1rem; color: var(--text2); }
.stat-value span { font-size: 0.85rem; color: var(--text3); margin-left: 4px; }

.stat-bar {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 16px;
  overflow: hidden;
}

.stat-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon), var(--neon2));
  border-radius: 2px;
  transition: width 0.6s cubic-bezier(.4,0,.2,1);
}


.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}


.section-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text2);
  letter-spacing: 0.5px;
}



.sort-label {
  font-size: 0.78rem;
  color: var(--text3);
  font-family: var(--mono);
}


.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.device-mini-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 16px;
  transition: all 0.2s;
}

.device-mini-card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

.device-mini-name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}


.device-mini-kwh {
  font-family: var(--mono);
  font-size: 1.3rem;
  color: var(--neon);
}

.device-mini-kwh span {
   font-size: 0.7rem;
   color: var(--text3); 
}


.device-mini-bar {
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 10px;
}


.device-mini-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon), var(--neon2));
  border-radius: 2px;
}


.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text3);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  stroke: var(--text3);
  margin-bottom: 16px;
}

.empty-state p {
  font-size: 0.95rem;
  margin-bottom: 20px;
}


.form-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 32px;
}

.form-card h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  color: var(--text2);
}

.form-row {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 140px;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
}

input {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 11px 14px;
  color: var(--text);
  font-family: var(--display);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

input::placeholder { 
  color: var(--text3);
}

input:focus {
  border-color: var(--neon);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}

.form-error {
  color: var(--neon3);
  font-size: 0.82rem;
  margin-top: 10px;
  min-height: 18px;
}

button { font-family: var(--display); }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  background: linear-gradient(135deg, var(--neon), rgba(0,200,255,0.7));
  color: #000;
  font-weight: 700;
  font-size: 0.9rem;
  border: none;
  border-radius: var(--radius2);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.cta-btn svg { width: 16px; height: 16px; stroke: #000; }

.cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(0,200,255,0.4);
}

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

.cta-btn.full-width { width: 100%; justify-content: center; }

.add-btn { align-self: flex-end; margin-bottom: 0; }



.devices-table-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.device-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.device-row:last-child { border-bottom: none; }
.device-row:hover { background: rgba(0,200,255,0.03); }

.device-row-header {
  background: var(--panel2);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text3);
}

.device-row-header:hover { background: var(--panel2); }

.device-name-cell { font-weight: 600; color: var(--text); }

.device-kwh-cell {
  font-family: var(--mono);
  color: var(--neon);
  font-size: 0.95rem;
}

.device-cost-cell {
  font-family: var(--mono);
  color: var(--neon2);
  font-size: 0.9rem;
}

.device-hrs-cell { color: var(--text2); font-size: 0.9rem; }


.remove-btn {
  width: 30px;
  height: 30px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  font-size: 0.9rem;
  padding: 0;
}


.remove-btn:hover {

  background: rgba(255,79,123,0.1);
  border-color: var(--neon3);
  color: var(--neon3);
}



.results-bar {
  display: flex;
  gap: 24px;
  padding: 20px 0 0;
}

.results-bar .r-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.results-bar .r-label {
  font-size: 0.72rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
}

.results-bar .r-val {
  font-family: var(--mono);
  font-size: 1.4rem;
  color: var(--neon);
}



.insights-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.insight-card {

  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.insight-header {

  display: flex;
  align-items: center;
  gap: 16px;
}


.insight-icon {

  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}


.insight-icon.ai {
  background: linear-gradient(135deg, rgba(0,200,255,0.15), rgba(0,255,159,0.1));
  border: 1px solid rgba(0,200,255,0.3);
}

.insight-icon.compare {
  background: linear-gradient(135deg, rgba(0,255,159,0.15), rgba(0,200,255,0.1));
  border: 1px solid rgba(0,255,159,0.3);
}

.insight-icon svg { width: 22px; height: 22px; stroke: var(--neon); }
.insight-icon.compare svg { stroke: var(--neon2); }

.insight-header h3 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.insight-sub { font-size: 0.78rem; color: var(--text3); }

.hint {
  font-size: 0.75rem;
  color: var(--text3);
  margin-top: 8px;
  line-height: 1.5;
}


.ai-output {
  min-height: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text2);
}

.ai-output.loading::after {
  content: 'Analyzing your devices...';
  display: block;
  font-family: var(--mono);
  color: var(--neon);
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.ai-tip {

  display: flex;
  gap: 10px;
  padding: 12px;
  background: rgba(0,200,255,0.04);
  border: 1px solid var(--border);
  border-left: 3px solid var(--neon);
  border-radius: 0 var(--radius2) var(--radius2) 0;
  margin-bottom: 10px;
  font-size: 0.87rem;
  color: var(--text2);
}


.compare-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}


.compare-result {
  border-radius: var(--radius2);
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.compare-result.ok {
  background: rgba(0,255,159,0.06);
  border: 1px solid rgba(0,255,159,0.25);
  padding: 16px;
  color: var(--neon2);
}

.compare-result.warn {
  background: rgba(255,200,0,0.06);
  border: 1px solid rgba(255,200,0,0.25);
  padding: 16px;
  color: #ffd000;
}

.compare-result.danger {
  background: rgba(255,79,123,0.06);
  border: 1px solid rgba(255,79,123,0.25);
  padding: 16px;
  color: var(--neon3);
}


.tips-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.tips-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.tip-item {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  padding: 14px 16px;
  font-size: 0.85rem;
  color: var(--text2);
  line-height: 1.5;
  position: relative;
  padding-left: 36px;
}

.tip-item::before {
  content: '!';
  position: absolute;
  left: 12px;
  top: 14px;
  font-size: 0.85rem;
}


.auth-wrap {
  max-width: 480px;
  margin: 0 auto;
}

.auth-card, .profile-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}


.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.auth-tab {
  flex: 1;
  padding: 16px;
  background: transparent;
  border: none;
  color: var(--text3);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--display);
}

.auth-tab.active {
  color: var(--neon);
  background: rgba(0,200,255,0.06);
  border-bottom: 2px solid var(--neon);
}

.auth-tab:hover:not(.active) {
  color: var(--text);
  background: rgba(255,255,255,0.02);
}

.auth-form {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}


.profile-card {
  padding: 40px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--neon), var(--neon2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 900;
  color: #000;
  box-shadow: 0 0 30px rgba(0,200,255,0.35);
}

.user-info {
  font-size: 1rem;
  color: var(--text2);
  line-height: 1.6;
}

.user-info strong {
  display: block;
  font-size: 1.3rem;
  color: var(--text);
  margin-bottom: 4px;
}

.profile-stats {
  display: flex;
  gap: 32px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  width: 100%;
  justify-content: center;
}

.p-stat { display: flex; flex-direction: column; align-items: center; gap: 4px; }

.p-stat-val {
  font-family: var(--mono);
  font-size: 1.5rem;
  color: var(--neon);
}

.p-stat-label {
  font-size: 0.72rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text3);
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text3);
  padding: 10px 24px;
  border-radius: var(--radius2);
  font-family: var(--display);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.logout-btn:hover {
  border-color: var(--neon3);
  color: var(--neon3);
  background: rgba(255,79,123,0.06);
}


::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--neon); }


@media (max-width: 900px) {
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
  .insights-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .sidebar { display: none; }
  .main { padding: 0 16px 40px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .form-row { flex-direction: column; }
  .device-row { grid-template-columns: 2fr 1fr auto; }
  .device-hrs-cell, .device-cost-cell { display: none; }
  .compare-inputs { grid-template-columns: 1fr; }
}