/* ── CisternaGo Landing Page ── */

:root {
  --bg: #080c14;
  --surface: rgba(17, 24, 39, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f1f5f9;
  --text-secondary: #64748b;
  --accent: #c5f536;
  --accent-glow: rgba(197, 245, 54, 0.35);
  --accent-dim: rgba(197, 245, 54, 0.12);
  --paper: #fafafa;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(197, 245, 54, 0.04), transparent 55%);
  pointer-events: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Navigation ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  background: rgba(8, 12, 20, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

.lang-toggle {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.lang-btn {
  background: none;
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.25s;
}

.lang-btn.active {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

/* ── Hero ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 3rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.2rem;
  background: linear-gradient(170deg, #fff 40%, #64748b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 3rem;
}

/* ── Dashboard Mockup ── */
.dash-frame {
  position: relative;
  width: 100%;
  max-width: 520px;
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), 0 0 60px rgba(197, 245, 54, 0.06);
}

.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.2rem;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
}

.dash-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.cloud-sync {
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cloud-icon {
  font-size: 1rem;
  color: var(--text-secondary);
  transition: color 0.4s;
}

.syncing .cloud-icon {
  color: var(--accent);
}

.sync-dot {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  bottom: 0;
  left: 50%;
  opacity: 0;
}

.syncing .sync-dot:nth-child(2) {
  animation: syncUp 1.2s 0s ease-in-out infinite;
}

.syncing .sync-dot:nth-child(3) {
  animation: syncUp 1.2s 0.25s ease-in-out infinite;
}

.syncing .sync-dot:nth-child(4) {
  animation: syncUp 1.2s 0.5s ease-in-out infinite;
}

@keyframes syncUp {
  0% {
    opacity: 0;
    transform: translateY(0) translateX(-50%);
  }

  40% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateY(-18px) translateX(-50%);
  }
}

/* ── Dashboard Body ── */
.dash-body {
  position: relative;
  padding: 2rem 1.5rem 1.5rem;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ── Gauge ── */
.gauge-wrap {
  position: relative;
  width: 200px;
  height: 200px;
  transition: opacity 0.6s, transform 0.6s;
}

.gauge-svg {
  width: 100%;
  height: 100%;
}

.gauge-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.06);
  stroke-width: 14;
}

.gauge-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-dasharray: 502.65;
  stroke-dashoffset: 502.65;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 3.5s ease-in-out;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.gauge-fluid {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150px;
  height: 150px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(197, 245, 54, 0.12));
  clip-path: inset(100% 0 0 0);
  transition: clip-path 3.5s ease-in-out;
}

.gauge-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.gauge-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.gauge-unit {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

/* ── Status Badge ── */
.status-badge {
  margin-top: 1rem;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  transition: all 0.5s;
}

.state-1 .status-badge {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.state-2 .status-badge {
  border-color: #3b82f6;
  color: #60a5fa;
  background: rgba(59, 130, 246, 0.12);
}

.state-3 .status-badge {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ── Signature Badge (State 1 only) ── */
.sig-badge {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 8px;
  font-size: 0.6rem;
  font-weight: 600;
  color: #4ade80;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s, transform 0.5s;
}

.state-1 .sig-badge {
  opacity: 1;
  transform: translateY(0);
}

.sig-icon {
  font-size: 0.85rem;
}

/* ── Summary Overlay (State 3) ── */
.summary-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s, transform 0.7s;
  pointer-events: none;
}

.state-3 .gauge-wrap {
  opacity: 0;
  transform: scale(0.92);
}

.state-3 .summary-overlay {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.summary-paper {
  background: var(--paper);
  color: #1a1a1a;
  border-radius: 8px;
  padding: 1.5rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.summary-paper h4 {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #333;
  margin-bottom: 1rem;
  text-align: center;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
  font-size: 0.8rem;
}

.summary-row span:first-child {
  color: #888;
  font-weight: 500;
}

.summary-row span:last-child {
  font-weight: 700;
  color: #1a1a1a;
}

.summary-balanced {
  text-align: center;
  margin: 0.8rem 0;
  font-size: 0.7rem;
  font-weight: 700;
  color: #16a34a;
  letter-spacing: 0.08em;
}

.summary-sig {
  margin-top: 0.8rem;
  text-align: left;
}

.summary-sig-name {
  font-family: 'Georgia', serif;
  font-style: italic;
  font-size: 1.3rem;
  color: #333;
  transform: rotate(-2deg);
  display: inline-block;
}

.summary-sig-line {
  width: 160px;
  height: 1px;
  background: #aaa;
  margin: 0.3rem 0;
}

.summary-sig-label {
  font-size: 0.6rem;
  color: #999;
  font-style: italic;
}

/* ── Features ── */
.features {
  padding: 6rem 0;
}

.section-label {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 3rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  transition: transform 0.3s, border-color 0.3s;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(197, 245, 54, 0.25);
}

.card-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ── Beyond ── */
.beyond {
  padding: 5rem 0;
  text-align: center;
}

.beyond p {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ── CTA ── */
.cta {
  padding: 5rem 0;
  text-align: center;
}

.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #000;
  padding: 0.9rem 2.4rem;
  border-radius: 100px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cta-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 40px var(--accent-glow);
}

/* ── Contact Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: relative;
  background: #111827;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  width: 90%;
  max-width: 460px;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.35s ease;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

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

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: color 0.2s;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
}

.modal-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  transition: border-color 0.25s;
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.5;
}

.modal-submit {
  width: 100%;
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

/* ── Footer ── */
footer {
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

footer p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

footer .tagline {
  font-style: italic;
  margin-bottom: 0.3rem;
  color: var(--text-secondary);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .dash-frame {
    max-width: 360px;
  }

  .gauge-wrap {
    width: 160px;
    height: 160px;
  }

  .gauge-fluid {
    width: 120px;
    height: 120px;
  }

  .gauge-value {
    font-size: 1.5rem;
  }

  .summary-paper {
    padding: 1rem;
  }
}

/* ── Toast Notifications ── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 300;
  opacity: 0;
  transition: opacity 0.35s, transform 0.35s;
  pointer-events: none;
}

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

.toast-success {
  background: rgba(22, 163, 74, 0.9);
  color: #fff;
  box-shadow: 0 8px 24px rgba(22, 163, 74, 0.3);
}

.toast-error {
  background: rgba(220, 38, 38, 0.9);
  color: #fff;
  box-shadow: 0 8px 24px rgba(220, 38, 38, 0.3);
}