/* General */
:root {
  --color-primary: #3498db;
  --color-secondary: #2c3e50;
  --color-light: #f8f9fa;
  --color-white: #ffffff;
  --font-default: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-heading: "Raleway", sans-serif;
}

body {
  font-family: var(--font-default);
  color: #444444;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  color: #5faee3;
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: 15px;
  z-index: 996;
  background: var(--color-primary);
  width: 40px;
  height: 40px;
  border-radius: 50px;
  transition: all 0.4s;
}

.back-to-top i {
  font-size: 24px;
  color: #fff;
  line-height: 0;
}

.back-to-top:hover {
  background: #5faee3;
  color: #fff;
}

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

/* Header */
#header {
  transition: all 0.5s;
  z-index: 997;
  transition: all 0.5s;
  padding: 20px 0;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0px 2px 15px rgba(0, 0, 0, 0.1);
}

#header .logo h1 {
  font-size: 28px;
  margin: 0;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 1px;
}

#header .logo h1 a {
  color: var(--color-secondary);
  text-decoration: none;
}

/* Navbar */
.navbar {
  padding: 0;
}

.navbar ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
  align-items: center;
}

.navbar li {
  position: relative;
}

.navbar a, .navbar a:focus {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0 10px 30px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-secondary);
  white-space: nowrap;
  transition: 0.3s;
}

.navbar a:hover, .navbar .active, .navbar .active:focus, .navbar li:hover > a {
  color: var(--color-primary);
}

/* Hero Section */
#hero {
  width: 100%;
  height: 100vh;
  background: #f5f8fd;
  margin-top: 70px; /* Header height */
}

#hero h1 {
  margin: 0 0 10px 0;
  font-size: 48px;
  font-weight: 700;
  line-height: 56px;
  color: var(--color-secondary);
}

#hero h2 {
  color: #555;
  margin-bottom: 50px;
  font-size: 24px;
}

#hero .btn-get-started {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 1px;
  display: inline-block;
  padding: 10px 28px;
  border-radius: 50px;
  transition: 0.5s;
  margin: 10px;
  color: #fff;
  background: var(--color-primary);
}

#hero .btn-get-started:hover {
  background: #5faee3;
}

#hero .btn-watch-video {
  font-size: 16px;
  display: flex;
  align-items: center;
  transition: 0.5s;
  margin: 10px;
  line-height: 1;
  color: #444;
}

#hero .btn-watch-video i {
  line-height: 0;
  color: var(--color-primary);
  font-size: 32px;
  transition: 0.3s;
  margin-right: 8px;
}

#hero .btn-watch-video:hover i {
  color: #5faee3;
}

#hero .animated {
  animation: up-down 2s ease-in-out infinite alternate-reverse both;
}

@keyframes up-down {
  0% { transform: translateY(10px); }
  100% { transform: translateY(-10px); }
}

/* Chat Interface */
.chat-container {
  height: 600px;
  display: flex;
  flex-direction: column;
  border: 1px solid #ccc;
  border-radius: 8px;
  background: white;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-message {
  padding: 10px 15px;
  border-radius: 20px;
  max-width: 80%;
  width: fit-content;
}

.chat-message.user {
  align-self: flex-end;
  background-color: #f0f4f9;
  color: black;
  border-bottom-right-radius: 4px;
}

.chat-message.bot {
  align-self: flex-start;
  background-color: transparent;
  color: black;
}

.chat-input-area {
  display: flex;
  padding: 15px;
  border-top: 1px solid #eee;
  gap: 10px;
  align-items: center;
}

/* Sections General */
section {
  padding: 60px 0;
  overflow: hidden;
}

.section-title {
  text-align: center;
  padding-bottom: 30px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 20px;
  position: relative;
  color: var(--color-secondary);
}

.section-title h2::before {
  content: "";
  position: absolute;
  display: block;
  width: 120px;
  height: 1px;
  background: #ddd;
  bottom: 1px;
  left: calc(50% - 60px);
}

.section-title h2::after {
  content: "";
  position: absolute;
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-primary);
  bottom: 0;
  left: calc(50% - 20px);
}

.section-title p {
  margin-bottom: 0;
}

/* About Section */
.about .content h3 {
  font-weight: 700;
  font-size: 26px;
  color: #728394;
}

.about .content ul {
  list-style: none;
  padding: 0;
}

.about .content ul li {
  padding-bottom: 10px;
}

.about .content ul i {
  font-size: 20px;
  padding-right: 4px;
  color: var(--color-primary);
}

.about .content p:last-child {
  margin-bottom: 0;
}

/* Portfolio Section */
.portfolio .portfolio-item {
  margin-bottom: 30px;
}

.portfolio #portfolio-flters {
  padding: 0;
  margin: 0 auto 35px auto;
  list-style: none;
  text-align: center;
  border-radius: 50px;
  padding: 2px 15px;
}

.portfolio #portfolio-flters li {
  cursor: pointer;
  display: inline-block;
  padding: 10px 15px 8px 15px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  text-transform: uppercase;
  color: #272829;
  margin-bottom: 5px;
  transition: all 0.3s ease-in-out;
}

.portfolio #portfolio-flters li:hover,
.portfolio #portfolio-flters li.filter-active {
  color: var(--color-primary);
}

.portfolio #portfolio-flters li:last-child {
  margin-right: 0;
}

.portfolio .portfolio-wrap {
  transition: 0.3s;
  position: relative;
  overflow: hidden;
  z-index: 1;
  background: rgba(69, 80, 91, 0.8);
}

.portfolio .portfolio-wrap::before {
  content: "";
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transition: all ease-in-out 0.3s;
  z-index: 2;
  opacity: 0;
}

.portfolio .portfolio-wrap::after {
  content: "";
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transition: all ease-in-out 0.3s;
  z-index: 2;
  opacity: 0;
}

.portfolio .portfolio-wrap img {
  transition: 1s;
  display: block;
  width: 100%;
}

.portfolio .portfolio-wrap .portfolio-info {
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  text-align: center;
  z-index: 3;
  transition: all ease-in-out 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.portfolio .portfolio-wrap .portfolio-info::before {
  display: block;
  content: "";
  width: 48px;
  height: 48px;
  position: absolute;
  top: 35px;
  left: 35px;
  border-top: 3px solid #d7dce1;
  border-left: 3px solid #d7dce1;
  transition: all 0.5s ease 0s;
  z-index: 9994;
}

.portfolio .portfolio-wrap .portfolio-info::after {
  display: block;
  content: "";
  width: 48px;
  height: 48px;
  position: absolute;
  bottom: 35px;
  right: 35px;
  border-bottom: 3px solid #d7dce1;
  border-right: 3px solid #d7dce1;
  transition: all 0.5s ease 0s;
  z-index: 9994;
}

.portfolio .portfolio-wrap .portfolio-info h4 {
  font-size: 20px;
  color: #45505b;
  font-weight: 600;
}

.portfolio .portfolio-wrap .portfolio-info p {
  color: #45505b;
  font-size: 14px;
  text-transform: uppercase;
  padding: 0;
  margin: 0;
}

.portfolio .portfolio-wrap .portfolio-links {
  text-align: center;
  z-index: 4;
}

.portfolio .portfolio-wrap .portfolio-links a {
  color: #45505b;
  margin: 0 2px;
  font-size: 28px;
  display: inline-block;
  transition: 0.3s;
}

.portfolio .portfolio-wrap .portfolio-links a:hover {
  color: #148af9;
}

.portfolio .portfolio-wrap:hover::before {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 1;
}

.portfolio .portfolio-wrap:hover .portfolio-info {
  opacity: 1;
}

.portfolio .portfolio-wrap:hover .portfolio-info::before {
  top: 15px;
  left: 15px;
}

.portfolio .portfolio-wrap:hover .portfolio-info::after {
  bottom: 15px;
  right: 15px;
}

/* Resume Section */
.resume .resume-title {
  font-size: 26px;
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 20px;
  color: #45505b;
}

.resume .resume-item {
  padding: 0 0 20px 20px;
  margin-top: -2px;
  border-left: 2px solid var(--color-primary);
  position: relative;
}

.resume .resume-item h4 {
  line-height: 18px;
  font-size: 18px;
  font-weight: 600;
  text-transform: uppercase;
  font-family: "Poppins", sans-serif;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.resume .resume-item h5 {
  font-size: 16px;
  background: #f7f8f9;
  padding: 5px 15px;
  display: inline-block;
  font-weight: 600;
  margin-bottom: 10px;
}

.resume .resume-item ul {
  padding-left: 20px;
}

.resume .resume-item ul li {
  padding-bottom: 10px;
}

.resume .resume-item:last-child {
  padding-bottom: 0;
}

.resume .resume-item::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50px;
  left: -9px;
  top: 0;
  background: #fff;
  border: 2px solid var(--color-primary);
}

/* Contact Section */
.contact .info-box {
  color: #444444;
  text-align: center;
  box-shadow: 0 0 30px rgba(214, 215, 216, 0.6);
  padding: 20px 0 30px 0;
}

.contact .info-box i {
  font-size: 32px;
  color: var(--color-primary);
  border-radius: 50%;
  padding: 8px;
  border: 2px dotted #b3d1fa;
}

.contact .info-box h3 {
  font-size: 20px;
  color: #777777;
  font-weight: 700;
  margin: 10px 0;
}

.contact .info-box p {
  padding: 0;
  line-height: 24px;
  font-size: 14px;
  margin-bottom: 0;
}

.contact .php-email-form {
  box-shadow: 0 0 30px rgba(214, 215, 216, 0.6);
  padding: 30px;
}

.contact .php-email-form .error-message {
  display: none;
  color: #fff;
  background: #ed3c0d;
  text-align: left;
  padding: 15px;
  font-weight: 600;
}

.contact .php-email-form .sent-message {
  display: none;
  color: #fff;
  background: #18d26e;
  text-align: center;
  padding: 15px;
  font-weight: 600;
}

.contact .php-email-form .loading {
  display: none;
  background: #fff;
  text-align: center;
  padding: 15px;
}

.contact .php-email-form .loading:before {
  content: "";
  display: inline-block;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  margin: 0 10px -6px 0;
  border: 3px solid #18d26e;
  border-top-color: #eee;
  animation: animate-loading 1s linear infinite;
}

.contact .php-email-form input, .contact .php-email-form textarea {
  border-radius: 0;
  box-shadow: none;
  font-size: 14px;
}

.contact .php-email-form input:focus, .contact .php-email-form textarea:focus {
  border-color: var(--color-primary);
}

.contact .php-email-form button[type="submit"] {
  background: var(--color-primary);
  border: 0;
  padding: 10px 24px;
  color: #fff;
  transition: 0.4s;
  border-radius: 50px;
}

.contact .php-email-form button[type="submit"]:hover {
  background: #5faee3;
}

@keyframes animate-loading {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}