:root{
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --card: #ffffff;
  --border: #e5e5e5;

  --btn-bg: #ffffff;
  --btn-text: #000000;
  --btn-border: #000000;
  --btn-hover-bg: #000000;
  --btn-hover-text: #ffffff;

  --chat-bg: #ffffff;
  --chat-header-bg: #ffffff;
  --chat-body-bg: #ffffff;
  --chat-border: #dcdcdc;
  --chat-muted: #333333;

  --bot-bubble: #f1f2f4;
  --bot-text: #000000;

  --user-bubble: #111111;
  --user-text: #ffffff;

  --input-bg: #ffffff;
  --input-text: #111111;
  --input-border: #d9d9d9;

  --floating-bg: #000000;
  --floating-text: #ffffff;

  --toggle-bg: #ffffff;
  --toggle-text: #111111;
  --toggle-border: #dcdcdc;

  --shadow: 0 8px 24px rgba(0,0,0,0.16);
}

body.dark-mode{
  --bg: #0f1115;
  --text: #f5f7fa;
  --muted: #a9b0bb;
  --card: #171a21;
  --border: #2b313c;

  --btn-bg: #171a21;
  --btn-text: #f5f7fa;
  --btn-border: #39414f;
  --btn-hover-bg: #f5f7fa;
  --btn-hover-text: #111111;

  --chat-bg: #171a21;
  --chat-header-bg: #171a21;
  --chat-body-bg: #12151b;
  --chat-border: #2b313c;
  --chat-muted: #d6dbe3;

  --bot-bubble: #232833;
  --bot-text: #f5f7fa;

  --user-bubble: #f5f7fa;
  --user-text: #111111;

  --input-bg: #0f1115;
  --input-text: #f5f7fa;
  --input-border: #39414f;

  --floating-bg: #f5f7fa;
  --floating-text: #111111;

  --toggle-bg: #171a21;
  --toggle-text: #f5f7fa;
  --toggle-border: #39414f;

  --shadow: 0 10px 28px rgba(0,0,0,0.35);
}

/* MAIN PROFILE CROSSFADE */
.avatar-stack{
  position: relative;
  width: 180px;
  height: 180px;
  flex-shrink: 0;
}

.avatar-stack .avatar{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.45s ease;
}

.theme-img{
  opacity: 0;
  pointer-events: none;
}

.theme-img.active{
  opacity: 1;
}

/* CHAT AVATAR SWAP */
.theme-avatar{
  transition: opacity 0.2s ease;
}

.send-btn:disabled{
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

body.dark-mode .send-btn:disabled{
  background: #2b313c;
  color: #9aa0a6;
}

/* TOGGLE BUTTON */
.theme-toggle-wrap{
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100000;
}

.theme-toggle{
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--toggle-bg);
  color: var(--toggle-text);
  border: 1px solid var(--toggle-border);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  transition: .2s ease;
}

.theme-toggle:hover{
  transform: translateY(-1px);
}

.theme-icon{
  font-size: 14px;
}

/* GLOBAL OVERRIDES */
body{
  background: var(--bg);
  color: var(--text);
  transition: background .25s ease, color .25s ease;
}

/* PROFILE */
.avatar{
  width:180px;
  height:180px;
  object-fit:cover;
  background:#ffffff;
  border:1px solid #e6e6e6;
}

body.dark-mode .avatar{
  background:#111111;
  border:1px solid #2b313c;
}

.location{
  color: var(--muted);
}

.role{
  color: var(--chat-muted);
}

.primary,
.ghost{
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--btn-border);
}

.primary:hover,
.ghost:hover{
  background: var(--btn-hover-bg);
  color: var(--btn-hover-text);
}

body.dark-mode .btn-icon,
body.dark-mode .loc-icon{
  filter: brightness(0) invert(1);
}

body.dark-mode .chat-float-icon{
  filter: brightness(0) invert(0);
}

/* pag hover sa dark mode, black ulit para kita sa white background */
body.dark-mode .primary:hover .btn-icon,
body.dark-mode .ghost:hover .btn-icon{
  filter: brightness(0) invert(0);
}

/* keep verified badge original */
.badge-icon{
  filter: none !important;
}

/* ABOUT */
.about-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.about-container h2{
  color: var(--text);
}

.about-container p{
  color: var(--chat-muted);
}

/* STUDENT ID */
.student-id{
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}

body.dark-mode .student-id{
  box-shadow: 0 8px 18px rgba(0,0,0,.28);
}

/* FLOATING CHAT BUTTON */
.chat-float{
  background: var(--floating-bg);
  color: var(--floating-text);
}

.chat-float-icon{
  filter: brightness(0) invert(1);
}

/* CHAT BOX */
.chat-box{
  background: var(--chat-bg);
  border: 1px solid var(--chat-border);
  box-shadow: var(--shadow);
}

.chat-header{
  background: var(--chat-header-bg);
  border-bottom: 1px solid var(--border);
}

.chat-header-info h3{
  color: var(--text);
}

.chat-status{
  color: var(--muted);
}

.close-chat{
  color: var(--text);
}

.chat-body{
  background: var(--chat-body-bg);
}

.sender-name{
  color: var(--chat-muted);
}

.bot-message{
  background: var(--bot-bubble);
  color: var(--bot-text);
}

.bot-message::before{
  border-right: 8px solid var(--bot-bubble);
}

.user-message{
  background: var(--user-bubble);
  color: var(--user-text);
}

.chat-footer-wrap{
  background: var(--chat-header-bg);
  border-top: 1px solid var(--border);
}

.chat-footer input{
  background: var(--input-bg);
  color: var(--input-text);
  border: 1px solid var(--input-border);
}

.chat-footer input::placeholder{
  color: var(--muted);
}

.chat-footer-bottom{
  color: var(--muted);
}

body.dark-mode .send-btn{
  background: #3a4250;
  color: #ffffff;
}

body.dark-mode .send-btn:hover{
  background: #505a6b;
}

/* SCROLLBAR */
body.dark-mode .chat-body::-webkit-scrollbar-thumb{
  background: #4a5160;
}

/* MOBILE */
@media (max-width: 480px){
  .theme-toggle-wrap{
    top: 12px;
    right: 12px;
  }

  .theme-toggle{
    padding: 9px 12px;
    font-size: 13px;
  }
}

.about-container,
.tech-stack-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.about-container h2,
.tech-stack-container h2,
.tech-stack-section h4{
  color: var(--text);
}

.about-container p,
.tech-tags span{
  color: var(--chat-muted);
}

.tech-tags span{
  background: var(--card);
  border: 1px solid var(--border);
}

body.dark-mode .tech-tags span{
  background: #1d222c;
  border: 1px solid #39414f;
  color: var(--text);
}

/* EXPERIENCE */
.experience-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.experience-container h2,
.timeline-top h4{
  color: var(--text);
}

.timeline-top span,
.timeline-content p{
  color: var(--chat-muted);
}

.timeline-item::before{
  background: var(--border);
}

.timeline-dot{
  border: 1px solid var(--border);
  background: var(--card);
}

.timeline-item.active .timeline-dot{
  background: var(--text);
  border-color: var(--text);
}

body.dark-mode .site-footer{
  color: #bdbdbd;
}

body.dark-mode .site-footer p{
  border-top: 1px solid #2a2a2a;
}

/* RECENT PROJECTS */
.recent-projects-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.recent-projects-container h2,
.small-project-card h3{
  color: var(--text);
}

.small-project-card{
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
}

.small-project-card p{
  color: var(--chat-muted);
}

.project-domain{
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--chat-muted);
}

body.dark-mode .small-project-card{
  background: #171a21;
  border: 1px solid #39414f;
}

body.dark-mode .small-project-card:hover{
  box-shadow: 0 8px 18px rgba(0,0,0,0.28);
}

body.dark-mode .project-domain{
  background: #1d222c;
  border: 1px solid #39414f;
  color: var(--text);
}

/* SOCIAL LINKS */
.social-links-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.social-links-container h2{
  color: var(--text);
}

.social-link-item{
  color: var(--text);
  border-top: 1px solid var(--border);
}

.social-link-item span{
  color: var(--text);
}

.social-link-item,
.social-link-item:visited,
.social-link-item:hover,
.social-link-item:focus,
.social-link-item:active{
  color: var(--text);
  text-decoration: none;
}

/* GALLERY */
.gallery-container{
  background: var(--card);
  border: 1px solid var(--border);
}

.gallery-container h2{
  color: var(--text);
}

.gallery-img{
  border: 1px solid var(--border);
  background: #1d222c;
}

.gallery-nav{
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
}

body.dark-mode .gallery-nav:hover{
  background: #1d222c;
  color: var(--text);
}

body.dark-mode .social-links-container,
body.dark-mode .gallery-container{
  background: #171a21;
  border: 1px solid #39414f;
}

body.dark-mode .social-links-container h2,
body.dark-mode .gallery-container h2,
body.dark-mode .social-link-item,
body.dark-mode .social-link-item span{
  color: #f5f7fa;
}

body.dark-mode .social-link-item{
  border-top: 1px solid #39414f;
}

body.dark-mode .gallery-img{
  border: 1px solid #39414f;
  background: #1d222c;
}

body.dark-mode .gallery-nav{
  background: #171a21;
  border: 1px solid #39414f;
  color: #f5f7fa;
}

body.dark-mode .gallery-nav:hover{
  background: #1d222c;
}

body.dark-mode .social-link-item img{
  filter: brightness(0) invert(1);
}

.email-modal-card{
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.email-modal-card h2{
  color: var(--text);
}

.email-modal-subtext{
  color: var(--muted);
}

.email-modal-close{
  color: var(--text);
}

.email-form input,
.email-form textarea{
  background: var(--input-bg);
  color: var(--input-text);
  border: 1px solid var(--input-border);
}

.email-form input::placeholder,
.email-form textarea::placeholder{
  color: var(--muted);
}

.email-submit-btn{
  background: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid var(--btn-border);
}

.email-submit-btn:hover{
  background: var(--btn-hover-bg);
  color: var(--btn-hover-text);
}

.form-field label{
  color: var(--text);
}

.form-field input,
.form-field textarea{
  background: var(--input-bg);
  color: var(--input-text);
  border: 1px solid var(--input-border);
}

.form-field input:focus,
.form-field textarea:focus{
  border-color: var(--text);
}

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
textarea:-webkit-autofill{
  -webkit-text-fill-color: var(--input-text);
  -webkit-box-shadow: 0 0 0 1000px var(--input-bg) inset;
  box-shadow: 0 0 0 1000px var(--input-bg) inset;
  border: 1px solid var(--input-border);
}