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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: #ffffff;
  color: #222;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
}

/* ------------------------------
   HEADER & NAVIGATION
------------------------------- */
header {
  width: 100%;
  background: #f8f8f8;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.3rem;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links li a {
  text-decoration: none;
  font-weight: 500;
  color: #222;
  transition: color 0.3s;
}

.nav-links li a:hover {
  color: #0077ff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
  font-size: 1.2rem;
  background: none;
  border: none;
  cursor: pointer;
}

/* Hamburger Button */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 3px;
  background: #222;
  transition: 0.3s;
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

/* ------------------------------
   SECTIONS
------------------------------- */
.content-section {
  display: none;
  padding: 4rem 0;
}

.content-section.active {
  display: block;
}

h1, h2, h3 {
  margin-bottom: 1rem;
}

/* Cover Section */
#cover {
  height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #0077ff, #00c6ff);
  color: white;
}

.cover-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cover-content p {
  margin-bottom: 1.5rem;
}

.get-started-btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #fff;
  color: #0077ff;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: 0.3s;
}

.get-started-btn:hover {
  background: #222;
  color: #fff;
}

/* About Section */
.about-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
}

.profile-image img {
  width: 220px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.about-info-box {
  flex: 1;
}

.skills-list {
  margin-top: 1rem;
  list-style: disc;
  margin-left: 1.5rem;
}

/* Activities Section */
.choices-grid {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.choice-btn {
  padding: 0.75rem 1.2rem;
  font-size: 1rem;
  font-weight: 600;
  background: #0077ff;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

.choice-btn:hover {
  background: #005ec2;
}

.folder-content {
  background: #f9f9f9;
  padding: 1rem;
  border-radius: 8px;
}

.subfolder-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.6rem;
  background: #e6e6e6;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 0.5rem;
  transition: background 0.3s;
}

.subfolder-btn:hover {
  background: #d0d0d0;
}

.folder-list img {
  width: 180px;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.3s;
}

.folder-list img:hover {
  transform: scale(1.05);
}

/* Contact Section */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-form input,
.contact-form textarea {
  padding: 0.7rem;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-family: inherit;
}

.contact-form button {
  padding: 0.75rem;
  background: #0077ff;
  border: none;
  border-radius: 6px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: 0.3s;
}

.contact-form button:hover {
  background: #005ec2;
}

/* ------------------------------
   MODAL
------------------------------- */
.modal {
  display: none;
  position: fixed;
  top:0; left:0;
  width:100%; height:100%;
  background: rgba(0,0,0,0.8);
  z-index: 1000;
}

.modal-content {
  display: block;
  margin: 5% auto;
  max-width: 90%;
  border-radius: 10px;
}

.close {
  position: absolute;
  top: 20px; right: 30px;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

.modal-caption {
  text-align: center;
  color: #fff;
  margin-top: 10px;
}

/* ------------------------------
   MOBILE MENU
------------------------------- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100vh;
  background: rgba(0,0,0,0.95);
  padding: 3rem 1rem;
  text-align: center;
  z-index: 999;
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu a {
  text-decoration: none;
  color: white;
  font-size: 1.5rem;
  font-weight: 600;
}

.mobile-menu.active {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ------------------------------
   DARK MODE
------------------------------- */
.dark-mode {
  background: #1e1e1e;
  color: #f5f5f5;
}

.dark-mode header {
  background: #2a2a2a;
}

.dark-mode .nav-links li a {
  color: #f5f5f5;
}

.dark-mode .choice-btn {
  background: #444;
}

.dark-mode .folder-content {
  background: #333;
}

.dark-mode .subfolder-btn {
  background: #444;
  color: #fff;
}

.dark-mode .contact-form input,
.dark-mode .contact-form textarea {
  background: #2b2b2b;
  color: #fff;
  border: 1px solid #555;
}