/* ============================================================
   GoSolar – Main Stylesheet
   Design: Dark mode glassmorphism, yellow #F4C430, cyan #00D4FF
   ============================================================ */

/* ── Reset & Base ───────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-deep: #ECEEF2;
  /* Neutral cool-grey – dễ nhìn, không chói */
  --bg-dark: #DDE0E8;
  /* Slightly darker slate */
  --bg-card: #FFFFFF;
  --bg-card-h: #F8F9FB;
  --border: rgba(100, 110, 130, 0.14);
  --border-h: rgba(100, 110, 130, 0.28);

  --gold: #F3A721;
  --gold-dim: #C58516;
  --cyan: #184F8D;
  --cyan-dim: #123A6A;
  --green: #55A335;
  --red: #D93025;

  --text-1: #1B2230;
  /* Deep slate – không đen tuyền */
  --text-2: #4B566B;
  --text-3: #8C98AB;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-glow-gold: 0 16px 40px rgba(243, 167, 33, 0.25);
  --shadow-glow-cyan: 0 16px 40px rgba(24, 79, 141, 0.25);

  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --header-h: 72px;
  --sidebar-w: 500px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  outline: none;
}

input,
select,
textarea {
  font-family: var(--font);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-h);
  border-radius: 99px;
}

/* ── Typography ─────────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--gold) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--gold);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-gold);
}

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

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-primary.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-primary.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--bg-card-h);
  color: var(--text-1);
  font-weight: 500;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--border-h);
  background: rgba(255, 255, 255, 0.1);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 24px;
  background: transparent;
  color: var(--text-1);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

.btn-ghost.btn-lg {
  padding: 14px 28px;
}

.btn-danger-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(239, 68, 68, 0.1);
  color: var(--red);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-danger-sm:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.logo-icon {
  display: flex;
}

.logo-accent {
  color: var(--gold);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-link {
  padding: 6px 14px;
  color: var(--text-2);
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--cyan);
  background: var(--bg-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  padding: calc(var(--header-h) + 60px) 48px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(244, 196, 48, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: 0;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 780px;
  z-index: 1;
}


.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  background: rgba(244, 196, 48, 0.1);
  border: 1px solid rgba(244, 196, 48, 0.25);
  border-radius: 99px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease forwards;
}

.hero-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s 0.1s ease forwards;
  opacity: 0;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s 0.2s ease forwards;
  opacity: 0;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeInUp 0.6s 0.3s ease forwards;
  opacity: 0;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 0;
  animation: fadeInUp 0.6s 0.4s ease forwards;
  opacity: 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 24px 0 0;
}

.stat-item:first-child {
  padding-left: 0;
}

.stat-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--gold);
}

.stat-label {
  font-size: 12px;
  color: var(--text-3);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin: 0 16px;
}

/* Sun animation */
.hero-visual {
  flex-shrink: 0;
  z-index: 1;
}

.sun-animation {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sun-core {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, #FFF5CC 0%, var(--gold) 50%, #C9840030 100%);
  box-shadow: 0 0 60px rgba(244, 196, 48, 0.5), 0 0 120px rgba(244, 196, 48, 0.2);
  animation: sunPulse 3s ease-in-out infinite;
}

.sun-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(244, 196, 48, 0.15);
  animation: ringExpand 4s ease-in-out infinite;
}

.ring-1 {
  width: 180px;
  height: 180px;
  animation-delay: 0s;
}

.ring-2 {
  width: 240px;
  height: 240px;
  animation-delay: 1s;
}

.sun-ray {
  position: absolute;
  width: 2px;
  height: 30px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  border-radius: 2px;
  transform-origin: bottom center;
  animation: rayRotate 8s linear infinite;
}

.ray-1 {
  transform: translateY(-90px) rotate(0deg);
}

.ray-2 {
  transform: translateY(-90px) rotate(120deg);
}

.ray-3 {
  transform: translateY(-90px) rotate(240deg);
}

@keyframes sunPulse {

  0%,
  100% {
    box-shadow: 0 0 60px rgba(244, 196, 48, 0.5), 0 0 120px rgba(244, 196, 48, 0.2);
  }

  50% {
    box-shadow: 0 0 80px rgba(244, 196, 48, 0.7), 0 0 160px rgba(244, 196, 48, 0.3);
  }
}

@keyframes ringExpand {

  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }

  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes rayRotate {
  from {
    transform: rotate(0deg) translateY(-90px);
  }

  to {
    transform: rotate(360deg) translateY(-90px);
  }
}

.ray-1 {
  animation: rayRotate 8s linear infinite;
  transform-origin: 50% 90px;
}

.ray-2 {
  animation: rayRotate 8s linear infinite;
  transform-origin: 50% 90px;
  animation-delay: -2.67s;
}

.ray-3 {
  animation: rayRotate 8s linear infinite;
  transform-origin: 50% 90px;
  animation-delay: -5.33s;
}

/* ── App Section ─────────────────────────────────────────────  */
.app-section {
  position: relative;
  z-index: 1;
  height: calc(100vh - var(--header-h));
  margin-top: 0;
}

.app-container {
  display: flex;
  height: 100%;
  position: sticky;
  top: var(--header-h);
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  position: absolute;
  top: 20px;
  left: 20px;
  bottom: 20px;
  width: var(--sidebar-w);
  background: rgba(236, 238, 242, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  z-index: 500;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.sidebar-inner {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Tab Nav */
.tab-nav {
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 20px;
  flex-shrink: 0;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 4px;
  background: transparent;
  color: var(--text-3);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-2);
  background: var(--bg-card);
}

.tab-btn.active {
  background: rgba(244, 196, 48, 0.15);
  color: var(--gold);
}

/* Tab Content */
.tab-content {
  display: none;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.3s ease;
}

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

/* Section Label */
.section-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-top: 4px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 8px;
}

/* Search Box */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(244, 196, 48, 0.1);
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-3);
  flex-shrink: 0;
}

.search-box input {
  flex: 1;
  padding: 11px 36px 11px 38px;
  background: transparent;
  border: none;
  color: var(--text-1);
  font-size: 14px;
}

.search-box input::placeholder {
  color: var(--text-3);
}

.search-box input:focus {
  outline: none;
}

.search-clear {
  position: absolute;
  right: 10px;
  background: transparent;
  color: var(--text-3);
  font-size: 13px;
  padding: 4px;
  border-radius: 4px;
  display: none;
}

.search-clear:hover {
  color: var(--text-1);
}

.search-btn {
  position: absolute;
  right: 36px;
  background: var(--gold);
  color: #fff;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.search-btn:hover {
  background: var(--gold-dim);
  box-shadow: 0 2px 8px rgba(243, 167, 33, 0.3);
}

.search-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--text-3);
  box-shadow: none;
}

.search-btn svg {
  width: 14px;
  height: 14px;
}

/* Search input error state */
.search-box input.search-error {
  border: 1px solid #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.search-box input.search-error::placeholder {
  color: #ef4444;
  font-size: 12px;
  font-style: italic;
}

.autocomplete-list {
  background: rgba(10, 16, 32, 0.98);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: none;
  z-index: 50;
  box-shadow: var(--shadow-md);
  margin-top: -12px;
}

.autocomplete-list.visible {
  display: block;
}

.autocomplete-item {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.autocomplete-item:last-child {
  border-bottom: none;
}

.autocomplete-item:hover {
  background: var(--bg-card-h);
  color: var(--text-1);
}

.autocomplete-item .place-icon {
  margin-top: 1px;
  flex-shrink: 0;
}

/* Coord Grid */
.coord-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Form elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.param-value {
  color: var(--gold);
  font-weight: 700;
}

.form-input,
.form-select,
.form-textarea {
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-1);
  font-size: 14px;
  transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(244, 196, 48, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-3);
}

.form-select {
  appearance: none;
  cursor: pointer;
}

.form-select option {
  background: #fff;
  color: #1B2230;
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.hint-text {
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.5;
}

/* Range Slider */
.form-range {
  width: 100%;
  height: 4px;
  appearance: none;
  background: var(--border);
  border-radius: 4px;
  outline: none;
}

.form-range::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  cursor: pointer;
  border: 2px solid var(--bg-dark);
  box-shadow: 0 0 8px rgba(244, 196, 48, 0.4);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-3);
}

/* Package Cards */
.package-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.package-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
  padding: 12px 8px 10px;
  background: var(--bg-card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  overflow: hidden;
}

.package-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.package-card:hover {
  border-color: rgba(244, 196, 48, 0.4);
  background: rgba(244, 196, 48, 0.04);
}

.package-card.active {
  border-color: var(--gold);
  background: rgba(244, 196, 48, 0.08);
  box-shadow: 0 0 0 3px rgba(244, 196, 48, 0.12);
}

.pkg-badge {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: var(--gold);
  color: #0A0F1E;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 0;
}

.pkg-icon {
  font-size: 20px;
  margin-top: 2px;
}

.package-card:has(.pkg-badge) .pkg-icon {
  margin-top: 14px;
}

.pkg-name {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-1);
}

.pkg-price {
  font-size: 15px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1.2;
}

.pkg-price span {
  font-size: 10px;
  font-weight: 400;
  color: var(--text-3);
}

.pkg-desc {
  font-size: 10px;
  color: var(--text-3);
  line-height: 1.4;
  margin-top: 2px;
}

/* Landing Scenarios */
.landing-scenarios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.landing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.landing-card:hover {
  border-color: rgba(0, 0, 0, 0.1);
  background: var(--bg-card-h);
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
}

.landing-icon {
  font-size: 48px;
  margin-bottom: 16px;
  filter: drop-shadow(0 4px 12px rgba(243, 167, 33, 0.2));
}

.landing-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-1);
  margin-bottom: 8px;
}

.landing-name-sub {
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  margin-top: -6px;
  margin-bottom: 8px;
}

.landing-desc {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.5;
}

/* Draw Controls */
.draw-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-draw {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

.btn-draw.active {
  background: rgba(244, 196, 48, 0.1);
  border-color: var(--gold);
  color: var(--gold);
}

/* Btn Row */
.btn-row {
  display: flex;
  gap: 8px;
}

.btn-row .btn-secondary {
  flex: 1;
  justify-content: center;
  font-size: 12px;
  padding: 9px 10px;
}

/* Area Info */
.area-info {
  margin-top: 4px;
}

.area-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-sm);
}

.area-badge svg {
  color: var(--cyan);
  flex-shrink: 0;
}

.area-label {
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 2px;
}

.area-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

/* ── Results ────────────────────────────────────────────────── */
.no-result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 20px;
  text-align: center;
}

.no-result-icon {
  font-size: 48px;
  line-height: 1;
}

.no-result p {
  color: var(--text-3);
  font-size: 13px;
}

.results-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.5s ease;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.result-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.result-card:hover {
  border-color: var(--border-h);
}

.result-card.highlight-card {
  grid-column: span 2;
  background: rgba(244, 196, 48, 0.06);
  border-color: rgba(244, 196, 48, 0.2);
}

.result-icon {
  font-size: 22px;
}

.result-label {
  font-size: 11px;
  color: var(--text-3);
  margin-bottom: 2px;
}

.result-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
}

.highlight-card .result-value {
  font-size: 20px;
  color: var(--gold);
}

/* Chart */
.chart-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.chart-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 12px;
}

/* Quote Box */
.quote-box {
  background: rgba(0, 212, 255, 0.03);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 16px;
}

.quote-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.quote-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quote-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.quote-label {
  font-size: 12px;
  color: var(--text-3);
}

.quote-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-1);
}

.quote-value.accent {
  color: var(--gold);
}

.quote-value.green {
  color: var(--green);
}

.disclaimer {
  font-size: 11px;
  color: var(--text-3);
  padding: 10px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

/* ── Map ────────────────────────────────────────────────────── */
.map-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#map {
  width: 100%;
  height: 100%;
  background: #1a2035;
  z-index: 1;
}

.map-overlay-top {
  position: absolute;
  bottom: 42px;
  right: 12px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.map-btn {
  width: 40px;
  height: 40px;
  background: rgba(10, 16, 32, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

.map-btn.active {
  background: rgba(244, 196, 48, 0.15);
  border-color: var(--gold);
  color: var(--gold);
}

.map-hint {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  background: rgba(10, 16, 32, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--gold);
  border-radius: 99px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gold);
  pointer-events: none;
  animation: float 2s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-4px);
  }
}

.map-info-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 6px 14px;
  background: rgba(6, 11, 24, 0.85);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-3);
}

/* Leaflet overrides */
.leaflet-control-zoom a {
  background: rgba(10, 16, 32, 0.9) !important;
  color: var(--text-1) !important;
  border-color: var(--border) !important;
}

.leaflet-control-zoom a:hover {
  background: var(--bg-card-h) !important;
  color: var(--gold) !important;
}

.leaflet-control-attribution {
  background: rgba(6, 11, 24, 0.7) !important;
  color: var(--text-3) !important;
  font-size: 10px;
}

.leaflet-control-attribution a {
  color: var(--text-3) !important;
}

/* ── Contact Section ────────────────────────────────────────── */
.contact-section {
  padding: 80px 48px;
  background: linear-gradient(180deg, var(--bg-deep) 0%, #080D1A 100%);
  border-top: 1px solid var(--border);
}

.contact-container {
  max-width: 1000px;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-2);
  font-size: 16px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding: 28px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--gold);
  background: var(--bg-card-h);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-gold);
}

.contact-icon-wrap {
  width: 60px;
  height: 60px;
  background: rgba(244, 196, 48, 0.1);
  border: 1px solid rgba(244, 196, 48, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
}

.contact-icon-wrap.zalo-icon {
  color: #0068ff;
  background: rgba(0, 104, 255, 0.1);
  border-color: rgba(0, 104, 255, 0.2);
}

.contact-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
  transition: var(--transition);
}

.contact-value:hover {
  color: var(--gold);
}

.contact-sub {
  font-size: 12px;
  color: var(--text-3);
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  padding: 48px 48px 24px;
  background: #030609;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  gap: 48px;
  justify-content: space-between;
  margin-bottom: 32px;
}

.footer-brand {
  max-width: 280px;
}

.footer-tagline {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
  margin-top: 12px;
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.footer-link {
  font-size: 13px;
  color: var(--text-3);
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--gold);
}

.footer-bottom {
  max-width: 1000px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-3);
  flex-wrap: wrap;
  gap: 8px;
}

/* ── Modal ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  background: #0D1628;
  border: 1px solid var(--border-h);
  border-radius: var(--radius-xl);
  padding: 32px;
  position: relative;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6);
}

.modal-overlay.open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--bg-card-h);
  color: var(--text-1);
}

.modal-header {
  text-align: center;
  margin-bottom: 28px;
}

.modal-icon {
  font-size: 42px;
  margin-bottom: 12px;
}

.modal-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.modal-subtitle {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.6;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.modal-success {
  text-align: center;
  padding: 20px 0;
}

.success-icon {
  font-size: 56px;
  margin-bottom: 16px;
}

.modal-success h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.modal-success p {
  color: var(--text-2);
  line-height: 1.7;
}

.modal-success a {
  color: var(--gold);
  font-weight: 600;
}

.mt-16 {
  margin-top: 16px;
}

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    padding: calc(var(--header-h) + 40px) 24px 40px;
    gap: 32px;
  }

  .hero-visual {
    display: none;
  }

  .app-container {
    flex-direction: column;
    height: auto;
    position: static;
  }

  :root {
    --sidebar-w: 100%;
  }

  .sidebar {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .map-wrapper {
    height: 60vh;
  }

  .contact-section {
    padding: 60px 24px;
  }

  .footer {
    padding: 40px 24px 20px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: calc(var(--header-h) + 24px) 16px 32px;
  }

  .nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .result-card.highlight-card {
    grid-column: span 1;
  }

  .form-row-2 {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-section {
    padding: 48px 16px;
  }

  .footer {
    padding: 32px 16px 16px;
  }

  .footer-links {
    flex-direction: column;
    gap: 24px;
  }

  .modal-box {
    padding: 24px;
  }
}

/* ── PDF Template Styles (Hidden from screen) ───────────────── */
#pdf-wrapper {
  position: absolute;
  left: -9999px;
  top: 0;
  /* Hide from screen but keep in DOM for html2pdf */
}

.pdf-container {
  width: 794px;
  /* A4 width in pixels at 96dpi */
  min-height: 1123px;
  /* A4 height */
  padding: 40px;
  background: #FFFFFF;
  color: #0F172A;
  font-family: 'Inter', Arial, sans-serif;
  line-height: 1.5;
}

.pdf-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid #E2E8F0;
}

.pdf-logo {
  display: flex;
  align-items: center;
}

.pdf-company-info {
  text-align: right;
  font-size: 12px;
  color: #475569;
}

.pdf-title {
  text-align: center;
  font-size: 24px;
  font-weight: 800;
  color: #1E293B;
  margin-bottom: 30px;
  letter-spacing: 0.5px;
}

.pdf-section-title {
  font-size: 16px;
  font-weight: 700;
  color: #FFFFFF;
  background: #1E293B;
  padding: 6px 12px;
  margin-bottom: 12px;
  margin-top: 24px;
}

.pdf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 16px;
}

.pdf-table td,
.pdf-table th {
  padding: 8px 12px;
  border: 1px solid #CBD5E1;
}

.pdf-finance-table th {
  background: #F8FAFC;
  color: #334155;
  text-align: left;
}

.pdf-finance-table td {
  font-size: 14px;
  text-align: left;
  vertical-align: middle;
}

.pdf-footer {
  margin-top: 40px;
  border-top: 1px solid #E2E8F0;
  padding-top: 20px;
}

.pdf-disclaimer {
  font-size: 11px;
  color: #64748B;
  margin-bottom: 30px;
  line-height: 1.4;
}

.pdf-signature {
  display: flex;
  justify-content: space-around;
  font-size: 14px;
}

/* ── Missing Fields Hint ─────────────────────────────────── */
.missing-fields-hint {
  display: none;
  background: #FFF9E6;
  border: 1px solid rgba(243, 167, 33, 0.3);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-top: 6px;
  font-size: 12px;
  color: #8B6914;
  line-height: 1.6;
  animation: fadeIn 0.3s ease;
}

.missing-fields-hint.visible {
  display: block;
}

.missing-fields-hint .missing-title {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 6px;
  color: #6B4F10;
}

.missing-fields-hint .missing-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.missing-fields-hint .missing-list li {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: #8B6914;
}

.missing-fields-hint .missing-list li::before {
  content: '⚠';
  font-size: 11px;
}

/* ── Surplus Calculation Styles (v2.2.0) ─────────────────── */
.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

#surplus-results {
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px dashed rgba(243, 167, 33, 0.3);
}

#surplus-grid .highlight-card {
  background: rgba(24, 79, 141, 0.06);
  border-color: rgba(24, 79, 141, 0.2);
}

#surplus-grid .highlight-card .result-value {
  color: var(--cyan);
}

@media (max-width: 640px) {
  .form-row-3 {
    grid-template-columns: 1fr;
  }
}

/* ── Sidebar & Landing Overlay states (v2.3.2+) ── */
.sidebar.collapsed {
  transform: translateX(-110%);
}

#landing-view {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  pointer-events: none;
}

/* ── Landing cards light overlay style (v2.3.4+) ── */
#landing-card-home:hover,
#landing-card-garden:hover,
#landing-card-custom:hover {
  background: var(--bg-card-h) !important;
  border-color: rgba(244, 196, 48, 0.5) !important;
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* ── Chart modal close btn hover ── */
#chart-modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.18) !important;
  color: #fff !important;
}

/* ── Login Gateway (Firebase Auth) ── */
.login-gateway-active {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 20000;
  background: rgba(10, 16, 32, 0.75);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.login-box {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 40px 32px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  text-align: center;
  animation: slideUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  color: #f1f5f9;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

body.not-logged-in #main-header,
body.not-logged-in #calculator-view {
  filter: blur(15px);
  pointer-events: none;
}

.shake-animation {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* ── Saved Calculations CSS ── */
.saved-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow-sm);
  margin-bottom: 8px;
}

.saved-item-card:hover {
  border-color: var(--border-h);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.saved-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.saved-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-1);
}

.saved-card-date {
  font-size: 10px;
  color: var(--text-3);
}

.saved-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
  font-size: 12px;
}

.saved-info-row {
  display: flex;
  justify-content: space-between;
  gap: 4px;
}

.saved-info-label {
  color: var(--text-3);
}

.saved-info-value {
  font-weight: 600;
  color: var(--text-2);
}

.saved-card-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn-load-saved {
  flex: 1;
  background: rgba(244, 196, 48, 0.1);
  color: var(--gold);
  border: 1px solid rgba(244, 196, 48, 0.2);
  padding: 8px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.btn-load-saved:hover {
  background: var(--gold);
  color: #0f172a;
  border-color: var(--gold);
}

.btn-delete-saved {
  background: rgba(239, 68, 68, 0.1);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-delete-saved:hover {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}

/* User Info Badge in Navbar */
.nav-info-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(243, 167, 33, 0.12);
  color: #d97706;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1px dashed rgba(243, 167, 33, 0.3);
  margin-right: 12px;
  vertical-align: middle;
  align-self: center;
}

.nav-info-badge.active-user {
  background: rgba(85, 163, 53, 0.12);
  color: var(--green);
  border: 1px dashed rgba(85, 163, 53, 0.3);
}

/* ── Interactive 24h Chart Modal Layout (v2.8.0) ── */
#chart-modal-body {
  display: flex;
  gap: 24px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

#modal-controls-pane {
  flex: 3;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 16px;
  overflow-y: auto;
  min-width: 250px;
}

@media (max-width: 768px) {
  #chart-modal-body {
    flex-direction: column !important;
    overflow-y: auto !important;
  }
  #modal-controls-pane {
    flex: none !important;
    width: 100% !important;
    min-height: auto !important;
    overflow-y: visible !important;
  }
}