/* ========================================================
   DX FITNESS — Estilo Global
   Tema: Cyber-Neon Fitness · Cores fluorescentes · Dark UI
   ======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
  /* Paleta fluorescente */
  --neon-lime: #C6FF00;
  --neon-cyan: #00F0FF;
  --neon-pink: #FF2EC4;
  --neon-orange: #FF6A00;
  --neon-yellow: #FFE600;
  --whatsapp: #25D366;
  --whatsapp-dark: #128C7E;

  /* Base escura */
  --bg-0: #0A0A0F;
  --bg-1: #11111A;
  --bg-2: #181826;
  --bg-3: #1F1F30;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.18);

  /* Texto */
  --text-0: #FFFFFF;
  --text-1: #E6E6F0;
  --text-2: #A8A8B8;
  --text-3: #6C6C82;

  /* Tipografia */
  --font-display: 'Bebas Neue', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Sombras neon */
  --glow-lime: 0 0 24px rgba(198, 255, 0, 0.45), 0 0 60px rgba(198, 255, 0, 0.18);
  --glow-cyan: 0 0 24px rgba(0, 240, 255, 0.45), 0 0 60px rgba(0, 240, 255, 0.18);
  --glow-pink: 0 0 24px rgba(255, 46, 196, 0.45), 0 0 60px rgba(255, 46, 196, 0.18);
  --glow-whatsapp: 0 0 24px rgba(37, 211, 102, 0.55), 0 0 60px rgba(37, 211, 102, 0.25);

  /* Layout */
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --max-w: 1280px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(198, 255, 0, 0.08), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(255, 46, 196, 0.08), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.04), transparent 60%);
  background-attachment: fixed;
}

/* Grid background overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Noise overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.5;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
}

/* ==========  NAVBAR  ========== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 1rem 2rem;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  cursor: pointer;
}

.logo-mark {
  width: 44px; height: 44px;
  position: relative;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
  border-radius: 12px;
  box-shadow: var(--glow-lime);
  transition: transform 0.3s ease;
}
.logo:hover .logo-mark { transform: rotate(-8deg) scale(1.05); }

.logo-mark span {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--bg-0);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--text-0);
}
.logo-text .accent { color: var(--neon-lime); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-2);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--neon-lime); }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -6px; left: 0;
  width: 0; height: 2px;
  background: var(--neon-lime);
  transition: width 0.3s ease;
}
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--whatsapp);
  color: #fff !important;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  box-shadow: var(--glow-whatsapp);
  transition: transform 0.2s ease;
}
.nav-cta:hover { transform: translateY(-2px); }
.nav-cta::after { display: none; }

.nav-burger {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-0);
  width: 44px; height: 44px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1.4rem;
}

/* ==========  CONTAINERS GERAIS  ========== */
.section {
  position: relative;
  z-index: 2;
  padding: 6rem 2rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--neon-lime);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(198, 255, 0, 0.3);
  border-radius: 999px;
  background: rgba(198, 255, 0, 0.05);
}

h1, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
  line-height: 1;
  color: var(--text-0);
}

h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.6rem;
  letter-spacing: 0.04em;
}

.section-header p {
  color: var(--text-2);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ==========  HERO  ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 2rem 4rem;
  z-index: 2;
  overflow: hidden;
}

.hero-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-content .kicker {
  animation: fadeUp 0.6s ease both;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.92;
  margin: 1.5rem 0;
  animation: fadeUp 0.7s 0.1s ease both;
}

.hero h1 .line { display: block; }
.hero h1 .stroke {
  -webkit-text-stroke: 2px var(--neon-lime);
  color: transparent;
}
.hero h1 .neon {
  color: var(--neon-lime);
  text-shadow: 0 0 40px rgba(198, 255, 0, 0.45);
}
.hero h1 .pink {
  color: var(--neon-pink);
  text-shadow: 0 0 40px rgba(255, 46, 196, 0.45);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-2);
  max-width: 480px;
  margin-bottom: 2rem;
  animation: fadeUp 0.7s 0.2s ease both;
}

.hero-cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeUp 0.7s 0.3s ease both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.8rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--neon-lime);
  color: var(--bg-0);
  box-shadow: var(--glow-lime);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 0 32px rgba(198,255,0,0.7), 0 0 80px rgba(198,255,0,0.25); }

.btn-whatsapp {
  background: var(--whatsapp);
  color: #fff;
  box-shadow: var(--glow-whatsapp);
}
.btn-whatsapp:hover { transform: translateY(-3px); background: var(--whatsapp-dark); }

.btn-ghost {
  background: transparent;
  color: var(--text-0);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { border-color: var(--neon-cyan); color: var(--neon-cyan); }

.btn-pink {
  background: var(--neon-pink);
  color: #fff;
  box-shadow: var(--glow-pink);
}
.btn-pink:hover { transform: translateY(-3px); }

/* Hero metrics */
.hero-metrics {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  animation: fadeUp 0.7s 0.4s ease both;
}

.metric .value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--neon-lime);
  line-height: 1;
}
.metric .label {
  font-size: 0.8rem;
  color: var(--text-3);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 0.3rem;
}

/* Hero photo card */
.hero-photo {
  position: relative;
  animation: fadeIn 1s 0.3s ease both;
}

.photo-frame {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.04);
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.05) saturate(1.05);
}

.photo-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 10, 15, 0.85));
  pointer-events: none;
}

.photo-tag {
  position: absolute;
  left: 1.2rem; bottom: 1.2rem;
  z-index: 2;
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-1);
  letter-spacing: 0.05em;
}
.photo-tag b { color: var(--neon-lime); font-weight: 700; }

.floating-badge {
  position: absolute;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  z-index: 3;
}
.badge-ipdj {
  top: 8%; right: -8%;
  animation: floaty 4s ease-in-out infinite;
}
.badge-cert {
  bottom: 12%; left: -10%;
  animation: floaty 4s 1.5s ease-in-out infinite;
}

.floating-badge .icon {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-lime));
  color: var(--bg-0);
  font-size: 1.2rem;
}
.floating-badge .badge-text { line-height: 1.2; }
.floating-badge .badge-text b { color: var(--neon-lime); display: block; font-family: var(--font-display); font-size: 1rem; letter-spacing: 0.05em; }
.floating-badge .badge-text span { color: var(--text-3); font-size: 0.7rem; font-family: var(--font-mono); }

/* ==========  FEATURES GRID  ========== */
.features-section {
  padding-bottom: 2rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  position: relative;
  padding: 2rem;
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), rgba(198,255,0,0.12), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 14px;
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
}

.feature-icon.lime { background: rgba(198,255,0,0.12); color: var(--neon-lime); box-shadow: inset 0 0 0 1px rgba(198,255,0,0.3); }
.feature-icon.cyan { background: rgba(0,240,255,0.12); color: var(--neon-cyan); box-shadow: inset 0 0 0 1px rgba(0,240,255,0.3); }
.feature-icon.pink { background: rgba(255,46,196,0.12); color: var(--neon-pink); box-shadow: inset 0 0 0 1px rgba(255,46,196,0.3); }
.feature-icon.orange { background: rgba(255,106,0,0.12); color: var(--neon-orange); box-shadow: inset 0 0 0 1px rgba(255,106,0,0.3); }
.feature-icon.yellow { background: rgba(255,230,0,0.12); color: var(--neon-yellow); box-shadow: inset 0 0 0 1px rgba(255,230,0,0.3); }
.feature-icon.green { background: rgba(37,211,102,0.12); color: var(--whatsapp); box-shadow: inset 0 0 0 1px rgba(37,211,102,0.3); }

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
}

.feature-card p {
  color: var(--text-2);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.feature-arrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--neon-lime);
  letter-spacing: 0.1em;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ==========  PLAN SECTION  ========== */
.plan-section {
  position: relative;
  padding: 6rem 2rem;
}

.plan-card {
  max-width: 900px;
  margin: 0 auto;
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.plan-card::before {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(198,255,0,0.15), transparent 60%);
  pointer-events: none;
}

.plan-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.plan-card h2 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.plan-card h2 .accent { color: var(--neon-lime); }

.plan-features {
  list-style: none;
  margin: 1.5rem 0;
}

.plan-features li {
  padding: 0.6rem 0;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  border-bottom: 1px dashed var(--line);
  font-size: 0.95rem;
  color: var(--text-1);
}

.plan-features li::before {
  content: '✓';
  color: var(--neon-lime);
  font-weight: 700;
  font-size: 1.1rem;
}

.plan-price-card {
  background: var(--bg-0);
  border: 1px solid var(--neon-lime);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  position: relative;
  box-shadow: var(--glow-lime);
}

.price-tag {
  font-family: var(--font-display);
  font-size: 4.5rem;
  color: var(--neon-lime);
  line-height: 1;
  letter-spacing: 0.02em;
}

.price-tag .currency {
  font-size: 1.8rem;
  vertical-align: top;
  margin-right: 0.2rem;
}

.price-period {
  color: var(--text-2);
  font-size: 0.9rem;
  margin: 0.4rem 0 1.5rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.price-card-list {
  list-style: none;
  text-align: left;
  margin-bottom: 1.5rem;
}
.price-card-list li {
  font-size: 0.85rem;
  padding: 0.3rem 0;
  color: var(--text-2);
}
.price-card-list li::before { content: '→ '; color: var(--neon-lime); }

/* ==========  ABOUT SECTION  ========== */
.about-section {
  padding: 6rem 2rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-w);
  margin: 0 auto;
}

.about-image {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
}

.about-image img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, rgba(198,255,0,0.1), transparent 50%, rgba(255,46,196,0.1));
  pointer-events: none;
}

.about-content .kicker { background: rgba(0,240,255,0.05); border-color: rgba(0,240,255,0.3); color: var(--neon-cyan); }

.about-content h2 { margin-bottom: 1.5rem; }
.about-content h2 .accent { color: var(--neon-cyan); }

.about-content p {
  color: var(--text-2);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.specialty-tags {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 1.5rem 0;
}

.tag {
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-1);
  letter-spacing: 0.05em;
}
.tag.lime { color: var(--neon-lime); border-color: rgba(198,255,0,0.4); background: rgba(198,255,0,0.05); }
.tag.cyan { color: var(--neon-cyan); border-color: rgba(0,240,255,0.4); background: rgba(0,240,255,0.05); }
.tag.pink { color: var(--neon-pink); border-color: rgba(255,46,196,0.4); background: rgba(255,46,196,0.05); }

.cert-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-top: 1.5rem;
}
.cert-row .seal {
  font-size: 2rem;
  width: 50px; height: 50px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
  color: var(--bg-0);
  border-radius: 10px;
  font-weight: 700;
  font-family: var(--font-display);
}
.cert-row .cert-info b { color: var(--text-0); }
.cert-row .cert-info span { color: var(--text-3); font-family: var(--font-mono); font-size: 0.8rem; }

/* ==========  HOW IT WORKS  ========== */
.steps-section {
  padding: 6rem 2rem;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  position: relative;
}

.step {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  position: relative;
  transition: all 0.3s ease;
}

.step:hover { border-color: var(--neon-lime); transform: translateY(-4px); }

.step-num {
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 2px var(--neon-lime);
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.step p {
  color: var(--text-2);
  font-size: 0.9rem;
}

/* ==========  FOOTER  ========== */
.footer {
  position: relative;
  z-index: 2;
  background: var(--bg-1);
  border-top: 1px solid var(--line);
  padding: 4rem 2rem 2rem;
}

.footer-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-3);
  margin-top: 1rem;
  font-size: 0.9rem;
  max-width: 320px;
}

.footer h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--neon-lime);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.footer ul { list-style: none; }
.footer ul li { margin-bottom: 0.6rem; }
.footer ul a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}
.footer ul a:hover { color: var(--neon-lime); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-3);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* ==========  WHATSAPP FLOATING  ========== */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  z-index: 99;
  background: var(--whatsapp);
  width: 60px; height: 60px;
  border-radius: 50%;
  display: grid; place-items: center;
  text-decoration: none;
  box-shadow: var(--glow-whatsapp);
  transition: transform 0.3s ease;
  animation: pulse 2s ease-in-out infinite;
}
.whatsapp-float:hover { transform: scale(1.1); }
.whatsapp-float svg { width: 30px; height: 30px; fill: white; }

/* ==========  ANIMATIONS  ========== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6), var(--glow-whatsapp); }
  50% { box-shadow: 0 0 0 12px rgba(37, 211, 102, 0), var(--glow-whatsapp); }
}

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(20px); opacity: 0; }
}

/* ==========  TOOL PAGES SHARED  ========== */
.tool-page {
  padding-top: 7rem;
  min-height: 100vh;
  position: relative;
  z-index: 2;
}

.tool-header {
  max-width: var(--max-w);
  margin: 0 auto 3rem;
  padding: 0 2rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-3);
  margin-bottom: 1rem;
}
.breadcrumb a { color: var(--text-2); text-decoration: none; }
.breadcrumb a:hover { color: var(--neon-lime); }

.tool-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 0.95;
  margin-bottom: 0.6rem;
}
.tool-title .accent { color: var(--neon-lime); }

.tool-subtitle {
  color: var(--text-2);
  font-size: 1.1rem;
  max-width: 700px;
}

.tool-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.tool-panel {
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.tool-panel h3 {
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  color: var(--neon-lime);
  letter-spacing: 0.05em;
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-2);
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-control {
  width: 100%;
  padding: 0.9rem 1rem;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text-0);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--neon-lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 0, 0.15);
}

.radio-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.radio-btn {
  flex: 1;
  min-width: 90px;
  padding: 0.7rem;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text-2);
  cursor: pointer;
  text-align: center;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.radio-btn:hover { border-color: var(--neon-lime); color: var(--text-0); }
.radio-btn.active {
  background: rgba(198, 255, 0, 0.15);
  border-color: var(--neon-lime);
  color: var(--neon-lime);
  font-weight: 600;
}

.result-card {
  background: var(--bg-0);
  border: 1px solid var(--neon-lime);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  margin-top: 1.5rem;
  box-shadow: var(--glow-lime);
}

.result-value {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--neon-lime);
  line-height: 1;
}

.result-label {
  font-family: var(--font-mono);
  color: var(--text-2);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.result-detail {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  color: var(--text-1);
  font-size: 0.95rem;
}

.info-box {
  background: var(--bg-0);
  border-left: 3px solid var(--neon-cyan);
  padding: 1.2rem;
  border-radius: 8px;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--text-2);
}

.info-box b { color: var(--neon-cyan); }

/* ==========  WORKOUT METHOD CARDS  ========== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.method-card {
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.method-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-lime);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.method-card .method-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--neon-lime);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.method-card h4 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--text-0);
  margin-bottom: 0.6rem;
}

.method-card p {
  color: var(--text-2);
  font-size: 0.9rem;
}

.method-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.method-card.expanded .method-details {
  max-height: 600px;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

.method-details ul {
  list-style: none;
  margin-top: 0.5rem;
}

.method-details li {
  padding: 0.4rem 0;
  color: var(--text-1);
  font-size: 0.88rem;
  display: flex;
  gap: 0.6rem;
}
.method-details li::before { content: '▸'; color: var(--neon-lime); }

/* ==========  CALENDAR  ========== */
.calendar-wrap {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.calendar-header h3 {
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  font-size: 1.8rem;
}

.cal-nav-btn {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  color: var(--text-1);
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.2s ease;
}
.cal-nav-btn:hover { border-color: var(--neon-lime); color: var(--neon-lime); }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.4rem;
}

.cal-day-label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.15em;
  padding: 0.5rem 0;
}

.cal-day {
  aspect-ratio: 1;
  background: var(--bg-0);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  font-size: 0.9rem;
}
.cal-day:hover { border-color: var(--neon-lime); }
.cal-day.empty { background: transparent; border-color: transparent; cursor: default; }
.cal-day.today { border-color: var(--neon-cyan); color: var(--neon-cyan); font-weight: 700; }
.cal-day.has-workout { background: rgba(198, 255, 0, 0.1); border-color: rgba(198, 255, 0, 0.4); }
.cal-day.has-workout::after {
  content: '';
  position: absolute;
  bottom: 4px;
  width: 5px; height: 5px;
  background: var(--neon-lime);
  border-radius: 50%;
}

/* Workout list */
.workout-list {
  margin-top: 1.5rem;
  background: var(--bg-0);
  border-radius: var(--radius);
  padding: 1.2rem;
  border: 1px solid var(--line);
}

.workout-list h4 {
  font-family: var(--font-display);
  letter-spacing: 0.1em;
  color: var(--neon-lime);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.workout-item {
  padding: 0.8rem;
  background: var(--bg-2);
  border-radius: 10px;
  margin-bottom: 0.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--line);
}

.workout-item .wi-info b { color: var(--text-0); font-size: 0.95rem; }
.workout-item .wi-info span { color: var(--text-3); font-size: 0.8rem; font-family: var(--font-mono); display: block; }

.workout-item button {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-2);
  width: 32px; height: 32px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.workout-item button:hover { border-color: var(--neon-pink); color: var(--neon-pink); }

/* ==========  TIMER  ========== */
.timer-display {
  font-family: var(--font-display);
  font-size: clamp(5rem, 15vw, 9rem);
  text-align: center;
  letter-spacing: 0.05em;
  background: linear-gradient(180deg, var(--neon-lime), var(--neon-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin: 2rem 0;
  text-shadow: 0 0 60px rgba(198, 255, 0, 0.3);
}

.timer-controls {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.timer-preset-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 1.5rem 0;
}

.timer-preset {
  padding: 0.6rem 1.2rem;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-1);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: all 0.2s ease;
}
.timer-preset:hover { border-color: var(--neon-lime); color: var(--neon-lime); }
.timer-preset.active {
  background: var(--neon-lime);
  color: var(--bg-0);
  border-color: var(--neon-lime);
  font-weight: 700;
}

.timer-mode {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-3);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.timer-phase {
  text-align: center;
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}
.timer-phase.work { color: var(--neon-lime); }
.timer-phase.rest { color: var(--neon-cyan); }

.timer-display.phase-work {
  background: linear-gradient(180deg, var(--neon-lime), var(--neon-yellow));
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 80px rgba(198, 255, 0, 0.5);
}
.timer-display.phase-rest {
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-pink));
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 80px rgba(0, 240, 255, 0.5);
}
.timer-display.phase-done {
  background: linear-gradient(180deg, var(--neon-pink), var(--neon-orange));
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 80px rgba(255, 46, 196, 0.5);
}

.timer-round {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-2);
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}

.mode-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2rem;
}
.mode-tab {
  padding: 0.7rem 1.4rem;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-2);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
  transition: all 0.2s ease;
}
.mode-tab:hover { border-color: var(--neon-lime); color: var(--neon-lime); }
.mode-tab.active {
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
  color: var(--bg-0);
  border-color: transparent;
  font-weight: 700;
}

.custom-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  max-width: 600px;
  margin: 1.5rem auto;
  padding: 1.5rem;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.custom-form.hidden { display: none; }
.custom-form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.custom-form input {
  padding: 0.7rem;
  background: var(--bg-0);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--neon-lime);
  font-family: var(--font-display);
  font-size: 1.5rem;
  text-align: center;
}

.hidden { display: none !important; }

.timer-card {
  max-width: 700px;
  margin: 2rem auto;
  padding: 3rem 2rem;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
}
.timer-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(198, 255, 0, 0.08), transparent 60%);
  pointer-events: none;
}

.stat-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.2rem;
  text-align: center;
  transition: all 0.3s ease;
}
.stat-card:hover {
  border-color: var(--neon-lime);
  transform: translateY(-2px);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.quick-add {
  padding: 0.5rem 1rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 0.8rem;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.2s ease;
}
.quick-add:hover {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
  background: rgba(255, 46, 196, 0.05);
}

.metric-tab {
  padding: 0.5rem 1rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
}
.metric-tab:hover { border-color: var(--neon-lime); color: var(--neon-lime); }
.metric-tab.active {
  background: var(--neon-lime);
  color: var(--bg-0);
  border-color: var(--neon-lime);
  font-weight: 700;
}

.history-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 0.6rem;
  font-size: 0.92rem;
}
.del-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-3);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.del-btn:hover {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 0.2rem;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  margin-left: 0.8rem;
}
.lang-option {
  padding: 0.35rem 0.7rem;
  background: transparent;
  border: none;
  border-radius: 999px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.2s ease;
}
.lang-option.active {
  background: linear-gradient(135deg, var(--neon-lime), var(--neon-cyan));
  color: var(--bg-0);
}
.lang-option:hover:not(.active) {
  color: var(--neon-lime);
}
@media (max-width: 768px) {
  .lang-toggle {
    margin: 0.5rem 0 0 0;
  }
}

.water-btn {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.9rem 1rem;
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 12px;
  color: var(--neon-cyan);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  transition: all 0.2s ease;
  text-align: center;
}
.water-btn span {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-3);
  letter-spacing: 0;
}
.water-btn:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--neon-cyan);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

/* ==========  EXERCISES LIBRARY  ========== */
.exercise-filters {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.6rem 1.2rem;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text-2);
  cursor: pointer;
  font-size: 0.88rem;
  transition: all 0.2s ease;
  font-family: var(--font-body);
}
.filter-btn:hover { border-color: var(--neon-lime); color: var(--text-0); }
.filter-btn.active {
  background: var(--neon-lime);
  color: var(--bg-0);
  border-color: var(--neon-lime);
  font-weight: 600;
}

.exercise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}

.exercise-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.exercise-card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-lime);
}

.exercise-thumb {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--bg-3), var(--bg-1));
  display: grid;
  place-items: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.exercise-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(198, 255, 0, 0.15), transparent 60%);
}

.exercise-body {
  padding: 1.2rem;
}

.exercise-body .muscle {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--neon-lime);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.exercise-body h4 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  color: var(--text-0);
  margin-bottom: 0.4rem;
}

.exercise-body .level {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}
.level.iniciante { background: rgba(0,240,255,0.15); color: var(--neon-cyan); }
.level.intermedio { background: rgba(255,230,0,0.15); color: var(--neon-yellow); }
.level.avancado { background: rgba(255,46,196,0.15); color: var(--neon-pink); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.modal-overlay.open { display: flex; animation: fadeIn 0.3s ease; }

.modal {
  background: var(--bg-1);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  color: var(--text-1);
  cursor: pointer;
  font-size: 1.2rem;
  transition: all 0.2s ease;
}
.modal-close:hover { border-color: var(--neon-pink); color: var(--neon-pink); }

.modal h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--neon-lime);
}

.modal .muscle-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--neon-cyan);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  display: block;
}

.modal h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  margin: 1.5rem 0 0.6rem;
  color: var(--text-0);
}

.modal p, .modal li {
  color: var(--text-1);
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal ol, .modal ul {
  padding-left: 1.5rem;
  margin: 0.5rem 0;
}

.modal li { margin-bottom: 0.4rem; }

/* ==========  PROGRESS TRACKER  ========== */
.tracker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.tracker-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.tracker-card h4 {
  font-family: var(--font-display);
  color: var(--neon-lime);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.tracker-chart {
  height: 200px;
  position: relative;
  margin: 1rem 0;
}

.tracker-entry-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
}

.tracker-entry-row input {
  flex: 1;
}

.tracker-history {
  margin-top: 1rem;
  max-height: 200px;
  overflow-y: auto;
}

.tracker-history-item {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0.8rem;
  background: var(--bg-0);
  border-radius: 8px;
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  align-items: center;
}
.tracker-history-item .date { color: var(--text-3); }
.tracker-history-item .val { color: var(--neon-lime); font-weight: 700; }
.tracker-history-item button {
  background: transparent;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  padding: 0.2rem 0.4rem;
}
.tracker-history-item button:hover { color: var(--neon-pink); }

/* ==========  WATER TRACKER  ========== */
.water-display {
  text-align: center;
  margin: 2rem 0;
}

.water-glass {
  width: 180px;
  height: 240px;
  margin: 1rem auto;
  position: relative;
  border: 3px solid var(--neon-cyan);
  border-top: none;
  border-radius: 0 0 40px 40px;
  overflow: hidden;
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.2), inset 0 0 30px rgba(0, 240, 255, 0.05);
  background: rgba(0, 240, 255, 0.02);
}

.water-fill {
  position: absolute;
  bottom: 0;
  left: 0; right: 0;
  background: linear-gradient(180deg, var(--neon-cyan), #0099cc);
  transition: height 0.5s ease;
  box-shadow: inset 0 0 20px rgba(255,255,255,0.2);
}

.water-fill::before {
  content: '';
  position: absolute;
  top: -8px; left: 0; right: 0;
  height: 16px;
  background: var(--neon-cyan);
  opacity: 0.7;
  border-radius: 50%;
  animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

.water-count {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--neon-cyan);
  margin-top: 1.2rem;
  line-height: 1;
  letter-spacing: 0.05em;
  text-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
}
.water-count .unit { font-size: 1.5rem; color: var(--text-2); }

.water-buttons {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* ==========  RESPONSIVE  ========== */
@media (max-width: 968px) {
  .hero-grid, .about-grid, .plan-grid, .tool-grid, .tracker-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .floating-badge { display: none; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .hero-metrics { justify-content: space-between; gap: 1rem; }
  .metric .value { font-size: 2rem; }
}

@media (max-width: 640px) {
  .navbar { padding: 0.8rem 1.2rem; }
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; background: var(--bg-1); padding: 1.5rem;
    border-top: 1px solid var(--line); gap: 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-burger { display: block; }
  .nav-links .nav-cta { width: 100%; justify-content: center; }
  .section { padding: 4rem 1.2rem; }
  .hero { padding: 6rem 1.2rem 3rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  .plan-card { padding: 2rem 1.5rem; }
  .tool-panel { padding: 1.5rem; }
  .modal { padding: 1.8rem; }
}