/* =========================
   GLOBAL STYLE
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: radial-gradient(circle at top left, #1f1147, #070b1d);
  color: #fff;
  overflow-x: hidden;
  transition: 0.3s ease;
}

/* =========================
   THEME VARIABLES
========================= */
:root {
  --primary: #7c3aed;
  --secondary: #06b6d4;

  --glass-bg-dark: rgba(255, 255, 255, 0.06);
  --glass-border-dark: rgba(255, 255, 255, 0.12);

  --glass-bg-light: rgba(255, 255, 255, 0.65);
  --glass-border-light: rgba(0, 0, 0, 0.08);

  --shadow-dark: 0 0 30px rgba(124, 58, 237, 0.12);
  --shadow-light: 0 0 30px rgba(0, 0, 0, 0.08);

  --text-dark: #ffffff;
  --text-light: #111827;
}

/* Light Mode */
body.light-mode {
  background: radial-gradient(circle at top left, #e0e7ff, #f8fafc);
  color: var(--text-light);
}

/* =========================
   NAVBAR
========================= */
.glass-navbar {
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 14px 0;
  transition: 0.3s ease;
}

body.light-mode .glass-navbar {
  background: rgba(255, 255, 255, 0.65);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.navbar-brand {
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}

.brand-text {
  color: #fff;
}

.brand-id {
  color: var(--primary);
  text-shadow: 0 0 15px rgba(124, 58, 237, 0.6);
}

body.light-mode .brand-text {
  color: #111827;
}

/* Navbar Links */
.nav-link {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
  transition: 0.25s ease;
}

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

.nav-link.active {
  color: var(--primary) !important;
  text-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

body.light-mode .nav-link {
  color: rgba(0, 0, 0, 0.7);
}

body.light-mode .nav-link:hover {
  color: var(--primary);
}

/* =========================
   BUTTON STYLE
========================= */
.btn-glass {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  border-radius: 14px;
  padding: 10px 16px;
  font-weight: 600;
  transition: 0.25s ease;
  backdrop-filter: blur(14px);
}

.btn-glass:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.25);
}

body.light-mode .btn-glass {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #111827;
}

/* Primary Button */
.btn-primary-custom {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  color: #fff;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 14px;
  transition: 0.25s ease;
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.25);
}

.btn-primary-custom:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 35px rgba(6, 182, 212, 0.25);
}

/* Outline Button */
.btn-outline-custom {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: transparent;
  color: #fff;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 14px;
  transition: 0.25s ease;
}

.btn-outline-custom:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

body.light-mode .btn-outline-custom {
  color: #111827;
  border: 1px solid rgba(0, 0, 0, 0.12);
}

/* Ghost Button */
.btn-ghost-custom {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 14px;
  transition: 0.25s ease;
}

.btn-ghost-custom:hover {
  transform: translateY(-3px);
  border-color: var(--secondary);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.25);
}

body.light-mode .btn-ghost-custom {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #111827;
}

/* =========================
   HERO SECTION
========================= */
.hero-section {
  padding: 90px 0 60px;
}

.hero-glass {
  background: var(--glass-bg-dark);
  border: 1px solid var(--glass-border-dark);
  border-radius: 20px;
  box-shadow: var(--shadow-dark);
  backdrop-filter: blur(18px);
}

body.light-mode .hero-glass {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border-light);
  box-shadow: var(--shadow-light);
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1.2;
}

.hero-brand-glow {
  color: var(--primary);
  text-shadow: 0 0 25px rgba(124, 58, 237, 0.65);
}

.hero-subtitle {
  font-size: 1rem;
  opacity: 0.85;
  line-height: 1.7;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

body.light-mode .hero-badge {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* Hero Visual */
.hero-visual-glass {
  background: var(--glass-bg-dark);
  border: 1px solid var(--glass-border-dark);
  border-radius: 20px;
  box-shadow: var(--shadow-dark);
  backdrop-filter: blur(18px);
}

body.light-mode .hero-visual-glass {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border-light);
  box-shadow: var(--shadow-light);
}

.profile-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 0 30px rgba(124, 58, 237, 0.35);
}

.profile-circle i {
  font-size: 3.2rem;
  color: #fff;
}

/* Tag Badge */
.tag-badge {
  padding: 8px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: 0.25s ease;
}

.tag-badge:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 0 18px rgba(124, 58, 237, 0.25);
}

body.light-mode .tag-badge {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* =========================
   SECTION GLOBAL
========================= */
.section-space {
  padding: 80px 0;
}

.section-title {
  font-size: 2.1rem;
  font-weight: 900;
}

.section-subtitle {
  opacity: 0.75;
  max-width: 650px;
  margin: auto;
  line-height: 1.7;
}

/* Glass Card */
.glass-card {
  background: var(--glass-bg-dark);
  border: 1px solid var(--glass-border-dark);
  border-radius: 20px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-dark);
}

body.light-mode .glass-card {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border-light);
  box-shadow: var(--shadow-light);
}

/* =========================
   SKILL CARD
========================= */
.skill-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 30px;
  text-align: center;
  transition: 0.25s ease;
  height: 100%;
}

.skill-card i {
  font-size: 2rem;
  color: var(--primary);
  text-shadow: 0 0 15px rgba(124, 58, 237, 0.5);
}

.skill-card h6 {
  font-weight: 800;
  margin-top: 12px;
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.18);
}

body.light-mode .skill-card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* =========================
   PROJECT CARD
========================= */
.project-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 28px;
  transition: 0.25s ease;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--secondary);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.18);
}

body.light-mode .project-card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.project-link {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-weight: 800;
  text-decoration: none;
  color: var(--primary);
  margin-top: 12px;
  transition: 0.25s ease;
}

.project-link:hover {
  color: var(--secondary);
  transform: translateX(4px);
}

/* =========================
   CONTACT FORM
========================= */
.custom-input {
  background: rgba(255, 255, 255, 0.06) !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  color: #fff !important;
  border-radius: 14px;
  padding: 14px 16px;
  font-weight: 600;
  transition: 0.25s ease;
}

.custom-input:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 15px rgba(124, 58, 237, 0.2) !important;
}

body.light-mode .custom-input {
  background: rgba(255, 255, 255, 0.75) !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
  color: #111827 !important;
}

/* =========================
   FOOTER
========================= */
.footer-section {
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.3);
}

body.light-mode .footer-section {
  background: rgba(255, 255, 255, 0.7);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

/* =========================
   BACK TO TOP
========================= */
.back-to-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 55px;
  height: 55px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(14px);
  font-size: 1.4rem;
  transition: 0.25s ease;
  opacity: 0;
  visibility: hidden;
  z-index: 999;
}

.back-to-top:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.25);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

body.light-mode .back-to-top {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.08);
  color: #111827;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 991px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }
}

/* =========================
   REVEAL ANIMATION
========================= */
.hero-glass,
.hero-visual-glass,
.glass-card,
.skill-card,
.project-card {
  opacity: 0;
  transform: translateY(35px);
  transition: 0.7s ease;
}

.reveal-active {
  opacity: 1 !important;
  transform: translateY(0) !important;
}