/* --- CSS VARIABLES & RESET --- */
:root {
  --color-bg-body: #f5f7f9;
  --color-topbar: #0a2f3f;
  --color-nav-bg: #ffffff;
  --color-primary: #0fa3a6;
  --color-primary-dark: #0b3c4c;
  --color-accent: #1bc5bd;
  --color-gradient: linear-gradient(
    to right,
    #1d78b6 0%,
    #0fa3a6 50%,
    #1bc5bd 100%
  );
  --color-text-main: #0e4a5f;
  --color-text-muted: #64748b;
  --color-white: #ffffff;
  --color-border: #e2e8f0;

  --topbar-height: 36px;
  --navbar-height: 70px;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-subtle:
    0 10px 25px -5px rgba(10, 47, 63, 0.1),
    0 8px 10px -6px rgba(10, 47, 63, 0.05);

  --font-main:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-body);
  color: var(--color-text-main);
  line-height: 1.5;
  min-height: 200vh;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-smooth);
}

ul {
  list-style: none;
}

/* --- TOPBAR --- */
.topbar {
  height: var(--topbar-height);
  background-color: var(--color-topbar);
  color: var(--color-white);
  display: flex;
  align-items: center;
  font-size: 12px;
  font-weight: 400;
  padding: 0 5%;
  position: relative;
  z-index: 1001;
}

.topbar-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0.9;
}

.topbar-right {
  display: flex;
  gap: 20px;
  align-items: center;
}

.topbar-item {
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0.8;
}

.topbar-item:hover {
  opacity: 1;
}

.top-icon {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

/* --- HEADER / NAVBAR WRAPPER --- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.nav-wrapper {
  padding: 15px 5%;
  display: flex;
  justify-content: center;
  transition: var(--transition-smooth);
}

header.scrolled .nav-wrapper {
  padding: 8px 5%;
}

/* --- UNIQUE NAVBAR SHAPE --- */
.navbar-shape {
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  height: 70px;
  padding: 0 30px;
  box-shadow: var(--shadow-subtle);
  border-radius: 100px;
  position: relative;
}

/* LOGO */
.logo-placeholder {
  font-weight: 800;
  font-size: 22px;
  color: var(--color-primary-dark);
  letter-spacing: -0.5px;
}
.logo-placeholder span {
  color: var(--color-primary);
}

/* NAVIGATION LINKS (Desktop) */
.nav-menu {
  display: flex;
  gap: 25px;
}

.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-main);
  position: relative;
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2.2;
  fill: none;
  opacity: 0.7;
  transition: var(--transition-smooth);
}

.nav-link:after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-smooth);
}

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

.nav-link:hover .nav-icon,
.nav-link.active .nav-icon {
  opacity: 1;
  transform: translateY(-1px);
}

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

/* BUTTONS */
.nav-btns {
  display: flex;
  gap: 15px;
  align-items: center;
}

.btn {
  font-family: var(--font-main);
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
  text-align: center;
}

.btn-outline {
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 14px;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-gradient {
  background: var(--color-gradient);
  color: var(--color-white);
  padding: 6px 6px 6px 24px;
  border-radius: 100px;
  font-size: 15px;
  border: none;
  box-shadow: 0 4px 15px rgba(15, 163, 166, 0.2);
  gap: 12px;
}

.btn-icon-circle {
  background: var(--color-white);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  transition: transform 0.3s ease;
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(15, 163, 166, 0.3);
}

.btn-gradient:hover .btn-icon-circle {
  transform: rotate(-45deg);
}

/* HAMBURGER */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 2000;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--color-primary-dark);
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* --- MOBILE MENU --- */
.mobile-menu {
  position: fixed;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100vh;
  background: var(--color-white);
  padding: 120px 40px 60px;
  transition: var(--transition-smooth);
  z-index: 1500;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-menu.active {
  left: 0;
}

.mobile-nav-container {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.mobile-link {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text-main);
  padding: 15px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 15px;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.3s ease;
}

.mobile-menu.active .mobile-link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-link .nav-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  opacity: 1;
}

.mobile-link .arrow-suffix {
  margin-left: auto;
  font-size: 18px;
  color: var(--color-border);
}

.mobile-footer {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  opacity: 0;
  transition: opacity 0.4s ease 0.6s;
}

.mobile-menu.active .mobile-footer {
  opacity: 1;
}

.mobile-footer .btn-gradient {
  padding: 8px 8px 8px 30px;
  justify-content: space-between;
  font-size: 18px;
}

/* --- RESPONSIVE --- */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 15px;
  }
  .nav-link {
    font-size: 13px;
  }
}

@media (max-width: 868px) {
  .topbar-left {
    display: none;
  }
  .topbar-container {
    justify-content: center;
  }
  .nav-menu,
  .nav-btns {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .navbar-shape {
    padding: 0 20px;
    height: 60px;
    border-radius: 15px;
  }
  .nav-wrapper {
    padding: 10px 15px;
  }
}