/* COLOR SYSTEM */
:root {
  --bg-color: #050814;
  --bg-gradient: radial-gradient(circle at top left, #182848 0%, #050814 55%, #000000 100%);
  --text-color: #FDFDFE;
  --muted-text: #C7D2E5;
  --primary-accent: #00E7E7;
  --primary-accent-soft: rgba(0, 231, 231, 0.15);
  --secondary-accent: #7B61FF;
  --cta-color: #34C759;
  --cta-hover: #28a84b;
  --card-bg: #101321;
  --card-border: rgba(255, 255, 255, 0.06);
  --header-bg: rgba(5, 8, 20, 0.9);
  --header-border: rgba(123, 97, 255, 0.35);
  --footer-bg: #070a16;
  --footer-border: rgba(0, 231, 231, 0.35);
  --input-bg: #050814;
  --input-border: rgba(255, 255, 255, 0.08);
  --error-color: #FF4B4B;
  --success-color: #3DD598;
  --glass-blur: 16px;
}

[data-theme="light"] {
  --bg-color: #F7FAFF;
  --bg-gradient: linear-gradient(135deg, #E3F2FF 0%, #FDF7FF 45%, #E8FFF9 100%);
  --text-color: #101019;
  --muted-text: #5B6478;
  --primary-accent: #12C2E9;
  --primary-accent-soft: rgba(18, 194, 233, 0.18);
  --secondary-accent: #7B61FF;
  --cta-color: #16C772;
  --cta-hover: #0ea65d;
  --card-bg: #FFFFFF;
  --card-border: rgba(10, 30, 60, 0.06);
  --header-bg: rgba(250, 252, 255, 0.96);
  --header-border: rgba(18, 194, 233, 0.55);
  --footer-bg: #F0F3FF;
  --footer-border: rgba(123, 97, 255, 0.45);
  --input-bg: #F8FAFF;
  --input-border: rgba(10, 30, 60, 0.12);
  --error-color: #D7263D;
  --success-color: #17C964;
  --glass-blur: 20px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg-gradient);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
main { padding-top: 90px; min-height: calc(100vh - 200px); }

section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 20px;
}

h1, h2, h3 { letter-spacing: 0.02em; }
h1 { font-size: 2.4rem; margin-bottom: 20px; }
h2 { font-size: 2rem; margin-bottom: 24px; text-align: center; }
p { font-size: 0.97rem; color: var(--muted-text); }

/* HEADER */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--header-bg);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--header-border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 34px;
  width: auto;
}

.brand-text {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: linear-gradient(120deg, var(--primary-accent), var(--secondary-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--muted-text);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-accent);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
  transition: width 0.25s ease;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-selector {
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: rgba(0,0,0,0.08);
  color: var(--text-color);
  font-size: 0.78rem;
  cursor: pointer;
}

[data-theme="light"] .lang-selector {
  background: rgba(255,255,255,0.9);
}

.theme-toggle {
  border: none;
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  font-size: 1.1rem;
}

.btn-whatsapp-header {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #25D366;
  color: #FFFFFF;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
}

.hamburger {
  display: none;
  font-size: 1.4rem;
  cursor: pointer;
}

/* HERO */
.hero {
  text-align: center;
  padding-top: 60px;
  padding-bottom: 40px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--primary-accent-soft);
  color: var(--primary-accent);
  font-size: 0.75rem;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 2.6rem;
  max-width: 720px;
  margin: 0 auto 16px;
}

.hero h1 span {
  background: linear-gradient(120deg, var(--primary-accent), var(--secondary-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  max-width: 680px;
  margin: 0 auto 16px;
}

.cta-group {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--cta-color);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--cta-hover);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--primary-accent);
  color: var(--primary-accent);
}

.btn-outline:hover {
  background: var(--primary-accent-soft);
}

/* SERVICE CARDS */
.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-top: 16px;
}

.service-card {
  background: var(--card-bg);
  border-radius: 14px;
  border: 1px solid var(--card-border);
  padding: 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .service-card {
  box-shadow: 0 15px 35px rgba(27, 51, 89, 0.12);
}

.service-icon {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  background: var(--primary-accent-soft);
  color: var(--primary-accent);
  font-size: 1.1rem;
}

.service-card h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.service-tagline {
  font-size: 0.8rem;
  color: var(--primary-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

/* PANEL */
.panel {
  background: var(--card-bg);
  border-radius: 16px;
  border: 1px solid var(--card-border);
  padding: 22px;
  box-shadow: 0 20px 45px rgba(0,0,0,0.35);
}

[data-theme="light"] .panel {
  box-shadow: 0 18px 40px rgba(27, 51, 89, 0.16);
}

/* FORMS */
.form-shell {
  max-width: 520px;
  margin: 0 auto;
}

.form-caption {
  font-size: 0.8rem;
  color: var(--muted-text);
  margin-bottom: 14px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 0.85rem;
  font-weight: 500;
}

.input, textarea {
  width: 100%;
  padding: 9px 11px;
  border-radius: 9px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 0.9rem;
  font-family: inherit;
}

textarea {
  min-height: 76px;
  resize: vertical;
}

.input:focus, textarea:focus {
  outline: 1px solid var(--primary-accent);
  border-color: var(--primary-accent);
}

.form-feedback {
  display: none;
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.8rem;
  text-align: center;
}

.form-feedback.success {
  display: block;
  background: rgba(61, 213, 152, 0.15);
  color: var(--success-color);
}

.form-feedback.error {
  display: block;
  background: rgba(255, 75, 75, 0.15);
  color: var(--error-color);
}

/* TABLE */
.solutions-table-wrapper {
  overflow-x: auto;
  margin-bottom: 28px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--card-bg);
  border-radius: 14px;
  border: 1px solid var(--card-border);
  overflow: hidden;
}

thead {
  background: linear-gradient(90deg, var(--primary-accent-soft), rgba(123, 97, 255, 0.18));
}

th, td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

th {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--muted-text);
}

tbody tr:nth-child(even) {
  background-color: rgba(255, 255, 255, 0.02);
}

/* FAQ */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  margin-bottom: 14px;
  overflow: hidden;
}

.faq-question {
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.faq-question:hover {
  background: rgba(0,231,231,0.05);
}

.faq-answer {
  padding: 0 16px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 16px 14px;
  max-height: 500px;
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* PLACEHOLDER */
.placeholder {
  text-align: center;
  padding: 28px 18px;
  border-radius: 16px;
  border: 1px dashed rgba(255,255,255,0.16);
  background: rgba(0,0,0,0.2);
}

[data-theme="light"] .placeholder {
  border-color: rgba(27,51,89,0.26);
  background: rgba(255,255,255,0.92);
}

/* FOOTER */
footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--footer-border);
  margin-top: 40px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 18px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  font-size: 0.8rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.social-icon {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.35);
  color: #ffffff;
  font-size: 0.95rem;
}

[data-theme="light"] .social-icon {
  background: rgba(10,30,60,0.09);
  color: #222;
}

.social-icon:hover {
  background: linear-gradient(135deg, var(--primary-accent), var(--secondary-accent));
  color: #000;
}

.footer-bottom {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-text);
  opacity: 0.8;
  padding: 0 20px 16px;
}

/* STICKY */
.sticky-whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.7rem;
  box-shadow: 0 10px 25px rgba(0,0,0,0.45);
  z-index: 999;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 58px;
    left: 0; right: 0;
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    padding: 10px 20px 12px;
    flex-direction: column;
    gap: 8px;
  }

  .nav-menu.open { display: flex; }
  .hamburger { display: block; }
  .brand-text { display: none; }
  .hero h1 { font-size: 2.1rem; }
  section { padding: 52px 18px; }
  .service-grid { grid-template-columns: 1fr; }
}