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

/* ================= VARIABLES ================= */
:root {
  --primary: #00c6ff;

  --bg-dark: #02070d;
  --bg-light: #050b14;

  --text-light: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.7);

  --glass-bg: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);

  --gradient: linear-gradient(90deg, #00c6ff, #00ffcc, #00c6ff);

  /* Responsive spacing */
  --section-padding: clamp(60px, 8vw, 100px);
  --container-padding: clamp(16px, 4vw, 24px);
}

/* ================= BASE ================= */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Poppins", sans-serif;
  background: var(--bg-dark);
  color: var(--text-light);
  overflow-x: hidden;
  line-height: 1.6;
 user-select: none;
  /* GPU-composited layers for smoother scrolling */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ================= COMMON ================= */
a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
  pointer-events: none;
  /* Prevent drag on all browsers */
  -webkit-user-drag: none;
  user-select: none;
}

ul {
  list-style: none;
}

li {
  margin: 6px 0;
}

button {
  cursor: pointer;
  font-family: inherit;
}

/* ================= LAYOUT ================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* ================= SECTION ================= */
section {
  padding-block: var(--section-padding);
}

/* ================= TYPOGRAPHY ================= */
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.2;
}

h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

h1,
h2,
h3,
h4 {
  margin-bottom: 12px;
  font-weight: 600;
}

p {
  margin: 12px 0;
  color: var(--text-muted);
}

/* ================= SECTION TITLE ================= */
.section-title {
  text-align: center;
  margin-bottom: clamp(30px, 5vw, 50px);
}

.section-title p {
  max-width: 700px;
  margin-inline: auto;
}

/* ================= HR ================= */
.hr {
  border: none;
  border-top: 1px solid var(--primary);
  opacity: 0.5;
}

/* ================= BUTTON ================= */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  color: #000;
  transition: all 0.3s ease;
  box-shadow: 0 6px 18px rgba(0, 198, 255, 0.3);
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(0, 198, 255, 0.45);
}

/* ================= GRADIENT ================= */
@keyframes ssfcGradient {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 200% center;
  }
}

.ssfc-gradient-text {
  background: var(--gradient);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: ssfcGradient 5s linear infinite;
}

.ssfc-gradient-bg {
  background: var(--gradient);
  background-size: 200% auto;
  animation: ssfcGradient 5s linear infinite;
}

/* ================= HIGHLIGHT ================= */
.ssfc-highlight {
  color: var(--primary);
  font-weight: 600;
}

/* ================= ANIMATIONS ================= */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ================= UTILITIES ================= */
.text-center {
  text-align: center;
}

.hidden {
  display: none !important;
}

/* ================= RESPONSIVE BREAKPOINTS ================= */

/* Tablet */
@media (max-width: 992px) {
  h1 {
    line-height: 1.3;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .btn {
    padding: 10px 18px;
    font-size: 0.9rem;
  }

  section {
    padding-block: clamp(50px, 10vw, 80px);
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  h1 {
    font-size: 1.9rem;
  }
}