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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: "Segoe UI", sans-serif;
  color: #111;
  background-color: #eef3ff;
  background-image:
    linear-gradient(0deg, rgba(0,0,0,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.06) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255,255,255,0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.4) 1px, transparent 1px);
  background-size:
    60px 60px,
    60px 60px,
    15px 15px,
    15px 15px;
}

/* NAVBAR */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 60px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.nav-left {
  font-weight: 700;
  letter-spacing: 1px;
  font-size: 18px;
  color: #0a66c2;
}

.nav-right {
  display: flex;
  gap: 22px;
}

.nav-right a {
  text-decoration: none;
  color: #333;
  font-size: 15px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-right a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: #0a66c2;
  transition: width 0.3s ease;
}

.nav-right a:hover::after {
  width: 100%;
}

.nav-right a:hover {
  color: #0a66c2;
}

/* HERO SECTION */
.hero-modern {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 90px 60px;
  min-height: 550px;
  border-radius: 0 0 32px 32px;
  background: #f9fbff;
  overflow: hidden;
  position: relative;
}

.hero-modern::before {
  content: "";
  inset: 0;
  position: absolute;
  opacity: 0.15;
  pointer-events: none;
  background-image:
    linear-gradient(#bcd2f5 1px, transparent 1px),
    linear-gradient(90deg, #bcd2f5 1px, transparent 1px),
    linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
  background-size:
    90px 90px,
    90px 90px,
    20px 20px,
    20px 20px;
}

.hero-modern > * {
  position: relative;
  z-index: 5;
}

.hero-left {
  flex: 1;
  max-width: 600px;
}

.hero-hi {
  font-size: 34px;
  color: #0a66c2;
  margin-bottom: 10px;
  animation: fadeInUp 0.6s ease;
}

.hero-name {
  font-size: 52px;
  font-weight: 800;
  margin-bottom: 10px;
  animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero-name span {
  color: #0a66c2;
}

.hero-role {
  font-size: 22px;
  color: #333;
  margin-bottom: 14px;
  animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-desc {
  font-size: 16px;
  max-width: 400px;
  color: #444;
  line-height: 1.5;
  animation: fadeInUp 0.6s ease 0.3s backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* BUTTONS */
.hero-buttons {
  display: flex;
  gap: 18px;
  margin-top: 20px;
  animation: fadeInUp 0.6s ease 0.4s backwards;
  flex-wrap: wrap;
}

.hero-btn {
  padding: 14px 28px;
  background: linear-gradient(135deg, #0a66c2, #1a77ff);
  color: white;
  font-size: 16px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 8px 18px rgba(0, 80, 200, 0.25);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.hero-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(0, 80, 200, 0.35);
}

.resume-btn {
  padding: 14px 22px;
  background: #ffffff;
  border: 2px solid #0a66c2;
  color: #0a66c2;
  font-size: 15px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  display: inline-block;
  text-align: center;
}

.resume-btn:hover {
  background: #0a66c2;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0, 80, 200, 0.25);
}

/* PHOTO FRAME */
.hero-right {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  transform: translateX(-100px);
  animation: fadeIn 0.8s ease 0.5s backwards;
  flex-shrink: 0;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.photo-frame {
  width: 330px;
  height: 330px;
  position: relative;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  border-radius: 40px 12px 40px 12px;
  object-fit: cover;
  position: relative;
  z-index: 3;
}

.photo-frame::before {
  content: "";
  position: absolute;
  inset: -18px;
  border-radius: 40px 12px 40px 12px;
  background: linear-gradient(45deg, #00e1ff, #007bff, #00ffe0);
  z-index: 1;
  filter: drop-shadow(0 0 25px rgba(0, 200, 255, 0.55));
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { filter: drop-shadow(0 0 25px rgba(0, 200, 255, 0.55)); }
  50% { filter: drop-shadow(0 0 35px rgba(0, 200, 255, 0.75)); }
}

.photo-frame::after {
  content: "";
  position: absolute;
  inset: -10px;
  background: #f8faff;
  border-radius: 40px 12px 40px 12px;
  z-index: 2;
}

/* CARD SECTIONS */
.card {
  background: #fff;
  margin: 40px auto;
  padding: 35px;
  max-width: 1000px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 12px 28px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.card h2 {
  margin-bottom: 22px;
  font-size: 26px;
  color: #0a66c2;
  position: relative;
  padding-bottom: 10px;
}

.card h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #0a66c2, #1a77ff);
  border-radius: 2px;
}

/* ABOUT */
.about-container {
  display: flex;
  gap: 30px;
  align-items: center;
  justify-content: flex-start;
}

.about-img {
  width: 180px;
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}

.about-img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.about-text {
  max-width: 700px;
  font-size: 17px;
  line-height: 1.6;
  color: #333;
}

/* SKILLS */
.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skills-list li {
  list-style: none;
  background: #eef3ff;
  padding: 10px 16px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: default;
  border: 2px solid transparent;
}

.skills-list li:hover {
  background: #0a66c2;
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(10, 102, 194, 0.3);
}

/* PROJECTS */
.project {
  background: #f6f7fb;
  padding: 20px;
  margin-bottom: 16px;
  border-left: 4px solid #0a66c2;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.project:hover {
  background: #fff;
  transform: translateX(5px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.project h3 {
  color: #0a66c2;
  margin-bottom: 8px;
}

.project p {
  margin-bottom: 8px;
  line-height: 1.5;
}

.meta {
  font-size: 14px;
  color: #666;
}

.meta a {
  text-decoration: none;
  color: #0a66c2;
  font-weight: 600;
  transition: all 0.2s ease;
}

.meta a:hover {
  color: #1a77ff;
  text-decoration: underline;
}

/* CONTACT */
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.contact-links a {
  display: inline-block;
  padding: 10px 20px;
  font-weight: 600;
  text-decoration: none;
  color: #0a66c2;
  background: #eef3ff;
  border-radius: 8px;
  transition: 0.3s;
}

.contact-links a:hover {
  background: #0a66c2;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(10, 102, 194, 0.3);
}

.note {
  margin-top: 10px;
  font-size: 13px;
  color: #666;
  font-style: italic;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 25px 20px;
  color: #666;
  margin-top: 40px;
  font-size: 14px;
}

/* MINI PROJECT SIMULATOR */
.project-sim {
  margin-top: 16px;
  padding: 16px;
  border-radius: 10px;
  background: #eef3ff;
  border: 1px solid rgba(10, 102, 194, 0.2);
}

.sim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.sim-title {
  font-weight: 700;
  color: #0a66c2;
  font-size: 14px;
}

.sim-tag {
  padding: 3px 8px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(10, 102, 194, 0.2);
  color: #0a66c2;
  font-size: 12px;
}

.sim-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 160px;
  padding: 10px 4px;
  margin-bottom: 10px;
  border-radius: 8px;
  background: linear-gradient(135deg, #fdfdff, #dde8ff);
}

.sim-bar {
  flex: 1;
  margin: 0 4px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, #0a66c2, #1a77ff);
  transition: 0.2s;
  min-width: 8px;
}

.sim-bar.active {
  transform: translateY(-4px);
  box-shadow: 0 0 10px rgba(10, 102, 194, 0.6);
  background: linear-gradient(180deg, #00c6ff, #0072ff);
}

.sim-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
}

.sim-controls button {
  flex: 1;
  border: none;
  border-radius: 8px;
  padding: 10px;
  background: #0a66c2;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}

.sim-controls button:nth-child(1) {
  background: #fff;
  color: #0a66c2;
  border: 1px solid #0a66c2;
}

.sim-controls button:hover {
  transform: translateY(-2px);
}

.sim-hint {
  font-size: 13px;
  color: #666;
  margin-top: 8px;
}

/* AI CHAT WIDGET */
.assistant-widget {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 99;
}

.assistant-toggle {
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  background: linear-gradient(135deg, #0a66c2, #1a77ff);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
  transition: all 0.3s ease;
}

.assistant-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
}

.assistant-window {
  position: absolute;
  right: 0;
  bottom: 55px;
  width: 290px;
  max-height: 420px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  display: none;
  flex-direction: column;
}

.assistant-window.open {
  display: flex;
}

.assistant-header {
  background: linear-gradient(135deg, #0a66c2, #1a77ff);
  color: #fff;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

.assistant-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.assistant-messages {
  padding: 10px;
  flex: 1;
  overflow-y: auto;
  background: #f4f7ff;
}

.msg {
  max-width: 80%;
  padding: 7px 10px;
  margin-bottom: 8px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.4;
}

.msg.bot {
  background: #fff;
  color: #333;
  margin-right: auto;
}

.msg.user {
  background: #0a66c2;
  color: #fff;
  margin-left: auto;
}

.assistant-quick {
  padding: 6px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  background: #f4f7ff;
}

.assistant-quick button {
  background: #fff;
  border: 1px solid #0a66c2;
  color: #0a66c2;
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.assistant-quick button:hover {
  background: #0a66c2;
  color: #fff;
}

.assistant-input {
  display: flex;
  border-top: 1px solid #eee;
}

.assistant-input input {
  flex: 1;
  border: none;
  padding: 10px;
  font-size: 13px;
  outline: none;
}

.assistant-input button {
  background: #0a66c2;
  color: #fff;
  border: none;
  padding: 0 16px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s ease;
}

.assistant-input button:hover {
  background: #1a77ff;
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE OPTIMIZATIONS
   ============================================ */

/* Tablets and smaller laptops */
@media (max-width: 1024px) {
  .nav {
    padding: 18px 40px;
  }
  
  .hero-modern {
    padding: 70px 40px;
  }
  
  .hero-right {
    transform: translateX(-50px);
  }
  
  .photo-frame {
    width: 280px;
    height: 280px;
  }
}

/* Tablets portrait */
@media (max-width: 900px) {
  .hero-modern {
    flex-direction: column;
    text-align: center;
    padding: 50px 30px;
    min-height: auto;
  }
  
  .hero-left {
    max-width: 100%;
  }
  
  .hero-right {
    margin-top: 30px;
    transform: translateX(0);
  }

  .photo-frame {
    width: 240px;
    height: 240px;
  }
  
  .photo-frame::before {
    inset: -12px;
  }
  
  .photo-frame::after {
    inset: -7px;
  }

  .hero-buttons {
    justify-content: center;
  }
  
  .hero-desc {
    max-width: 100%;
  }

  .about-container {
    flex-direction: column;
    text-align: center;
  }

  .card {
    margin: 30px 20px;
    padding: 25px;
  }
}

/* Mobile devices */
@media (max-width: 600px) {
  /* Navbar mobile */
  .nav {
    padding: 15px 20px;
    flex-wrap: wrap;
  }
  
  .nav-left {
    font-size: 16px;
  }
  
  .nav-right {
    gap: 15px;
  }
  
  .nav-right a {
    font-size: 13px;
  }
  
  /* Hero section mobile */
  .hero-modern {
    padding: 40px 20px;
    border-radius: 0 0 20px 20px;
  }
  
  .hero-hi {
    font-size: 24px;
  }
  
  .hero-name {
    font-size: 36px;
  }
  
  .hero-role {
    font-size: 18px;
  }
  
  .hero-desc {
    font-size: 15px;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-btn,
  .resume-btn {
    width: 100%;
    padding: 12px 20px;
    font-size: 15px;
  }
  
  .photo-frame {
    width: 200px;
    height: 200px;
  }
  
  .photo-frame::before {
    inset: -10px;
  }
  
  .photo-frame::after {
    inset: -5px;
  }
  
  /* Cards mobile */
  .card {
    margin: 20px 15px;
    padding: 20px;
  }
  
  .card h2 {
    font-size: 22px;
  }
  
  /* About mobile */
  .about-img {
    width: 140px;
  }
  
  .about-text {
    font-size: 15px;
  }
  
  /* Skills mobile */
  .skills-list li {
    padding: 8px 14px;
    font-size: 14px;
  }
  
  /* Projects mobile */
  .project {
    padding: 15px;
  }
  
  .project h3 {
    font-size: 18px;
  }
  
  .project p {
    font-size: 14px;
  }
  
  /* Sorting simulator mobile */
  .sim-bars {
    height: 120px;
  }
  
  .sim-bar {
    margin: 0 2px;
    min-width: 6px;
  }
  
  .sim-controls button {
    padding: 8px;
    font-size: 13px;
  }
  
  /* Contact links mobile */
  .contact-links {
    flex-direction: column;
    align-items: stretch;
  }
  
  .contact-links a {
    text-align: center;
  }
  
  /* Assistant widget mobile */
  .assistant-widget {
    right: 10px;
    bottom: 10px;
  }
  
  .assistant-toggle {
    padding: 8px 14px;
    font-size: 13px;
  }

  .assistant-window {
    width: calc(100vw - 20px);
    max-width: 320px;
    right: -10px;
  }
}

/* Small mobile devices */
@media (max-width: 400px) {
  .nav {
    padding: 12px 15px;
  }
  
  .nav-left {
    font-size: 14px;
  }
  
  .nav-right {
    gap: 12px;
  }
  
  .nav-right a {
    font-size: 12px;
  }
  
  .hero-modern {
    padding: 30px 15px;
  }
  
  .hero-hi {
    font-size: 20px;
  }
  
  .hero-name {
    font-size: 30px;
  }
  
  .hero-role {
    font-size: 16px;
  }
  
  .hero-desc {
    font-size: 14px;
  }
  
  .photo-frame {
    width: 180px;
    height: 180px;
  }
  
  .card {
    margin: 15px 10px;
    padding: 18px;
  }
  
  .card h2 {
    font-size: 20px;
  }
  
  .about-img {
    width: 120px;
  }
  
  .assistant-window {
    max-width: 280px;
  }
}

/* Landscape mobile */
@media (max-width: 900px) and (orientation: landscape) {
  .hero-modern {
    min-height: auto;
    padding: 40px 30px;
  }
  
  .photo-frame {
    width: 200px;
    height: 200px;
  }
}