/* reset cơ bản thôi */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Montserrat', sans-serif;
  color: #ffffff;
  overflow-x: hidden;
  background: #0a0a0f;
  line-height: 1.6;
  position: relative;
}

/* animated gradient border effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 9998;
  background: 
    linear-gradient(90deg, #6366f1 0%, transparent 10%, transparent 90%, #6366f1 100%) top,
    linear-gradient(90deg, #8b5cf6 0%, transparent 10%, transparent 90%, #8b5cf6 100%) bottom,
    linear-gradient(0deg, #ec4899 0%, transparent 10%, transparent 90%, #ec4899 100%) left,
    linear-gradient(0deg, #6366f1 0%, transparent 10%, transparent 90%, #6366f1 100%) right;
  background-size: 100% 2px, 100% 2px, 2px 100%, 2px 100%;
  background-repeat: no-repeat;
  background-position: top, bottom, left, right;
  animation: borderGlow 3s ease-in-out infinite;
}

@keyframes borderGlow {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.8; }
}

/* corner accents */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 60px;
  height: 60px;
  border-top: 3px solid #6366f1;
  border-left: 3px solid #6366f1;
  pointer-events: none;
  z-index: 9998;
  animation: cornerPulse 2s ease-in-out infinite;
}

@keyframes cornerPulse {
  0%, 100% { 
    transform: scale(1);
    opacity: 0.5;
  }
  50% { 
    transform: scale(1.1);
    opacity: 1;
  }
}

/* corner decorations */
.corner-decoration {
  position: fixed;
  width: 60px;
  height: 60px;
  pointer-events: none;
  z-index: 9998;
}

.corner-decoration.top-right {
  top: 0;
  right: 0;
  border-top: 3px solid #8b5cf6;
  border-right: 3px solid #8b5cf6;
  animation: cornerPulse 2s ease-in-out infinite 0.5s;
}

.corner-decoration.bottom-left {
  bottom: 0;
  left: 0;
  border-bottom: 3px solid #ec4899;
  border-left: 3px solid #ec4899;
  animation: cornerPulse 2s ease-in-out infinite 1s;
}

.corner-decoration.bottom-right {
  bottom: 0;
  right: 0;
  border-bottom: 3px solid #6366f1;
  border-right: 3px solid #6366f1;
  animation: cornerPulse 2s ease-in-out infinite 1.5s;
}

body.loading {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #0a0a0f;
}

#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0a0a0f;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.8s ease-out;
}

#loading-screen.fade-out {
  opacity: 0;
}

.cssload-loader {
	position: relative;
	width: 100px;
	height: 100px;
	perspective: 780px;
}

.cssload-inner {
	position: absolute;
	width: 100%;
	height: 100%;
	box-sizing: border-box;
		-o-box-sizing: border-box;
		-ms-box-sizing: border-box;
		-webkit-box-sizing: border-box;
		-moz-box-sizing: border-box;
	border-radius: 50%;
		-o-border-radius: 50%;
		-ms-border-radius: 50%;
		-webkit-border-radius: 50%;
		-moz-border-radius: 50%;
  &.cssload-one {
	left: 0%;
	top: 0%;
	animation: cssload-rotate-one 1.15s linear infinite;
		-o-animation: cssload-rotate-one 1.15s linear infinite;
		-ms-animation: cssload-rotate-one 1.15s linear infinite;
		-webkit-animation: cssload-rotate-one 1.15s linear infinite;
		-moz-animation: cssload-rotate-one 1.15s linear infinite;
	border-bottom: 3px solid #5C5EDC;
}
  &.cssload-two {
	right: 0%;
	top: 0%;
	animation: cssload-rotate-two 1.15s linear infinite;
		-o-animation: cssload-rotate-two 1.15s linear infinite;
		-ms-animation: cssload-rotate-two 1.15s linear infinite;
		-webkit-animation: cssload-rotate-two 1.15s linear infinite;
		-moz-animation: cssload-rotate-two 1.15s linear infinite;
	border-right: 3px solid rgba(76, 70, 101, 0.99);
}
&.cssload-three {
	right: 0%;
	bottom: 0%;
	animation: cssload-rotate-three 1.15s linear infinite;
		-o-animation: cssload-rotate-three 1.15s linear infinite;
		-ms-animation: cssload-rotate-three 1.15s linear infinite;
		-webkit-animation: cssload-rotate-three 1.15s linear infinite;
		-moz-animation: cssload-rotate-three 1.15s linear infinite;
	border-top: 3px solid rgb(233, 144, 138);;
}

}
@keyframes cssload-rotate-one {
	0% {
		transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg);
	}
	100% {
		transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg);
	}
}

@-o-keyframes cssload-rotate-one {
	0% {
		-o-transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg);
	}
	100% {
		-o-transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg);
	}
}

@-ms-keyframes cssload-rotate-one {
	0% {
		-ms-transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg);
	}
	100% {
		-ms-transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg);
	}
}

@-webkit-keyframes cssload-rotate-one {
	0% {
		-webkit-transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg);
	}
	100% {
		-webkit-transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg);
	}
}

@-moz-keyframes cssload-rotate-one {
	0% {
		-moz-transform: rotateX(35deg) rotateY(-45deg) rotateZ(0deg);
	}
	100% {
		-moz-transform: rotateX(35deg) rotateY(-45deg) rotateZ(360deg);
	}
}

@keyframes cssload-rotate-two {
	0% {
		transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg);
	}
	100% {
		transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg);
	}
}

@-o-keyframes cssload-rotate-two {
	0% {
		-o-transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg);
	}
	100% {
		-o-transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg);
	}
}

@-ms-keyframes cssload-rotate-two {
	0% {
		-ms-transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg);
	}
	100% {
		-ms-transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg);
	}
}

@-webkit-keyframes cssload-rotate-two {
	0% {
		-webkit-transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg);
	}
	100% {
		-webkit-transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg);
	}
}

@-moz-keyframes cssload-rotate-two {
	0% {
		-moz-transform: rotateX(50deg) rotateY(10deg) rotateZ(0deg);
	}
	100% {
		-moz-transform: rotateX(50deg) rotateY(10deg) rotateZ(360deg);
	}
}

@keyframes cssload-rotate-three {
	0% {
		transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg);
	}
	100% {
		transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg);
	}
}

@-o-keyframes cssload-rotate-three {
	0% {
		-o-transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg);
	}
	100% {
		-o-transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg);
	}
}

@-ms-keyframes cssload-rotate-three {
	0% {
		-ms-transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg);
	}
	100% {
		-ms-transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg);
	}
}

@-webkit-keyframes cssload-rotate-three {
	0% {
		-webkit-transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg);
	}
	100% {
		-webkit-transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg);
	}
}

@-moz-keyframes cssload-rotate-three {
	0% {
		-moz-transform: rotateX(35deg) rotateY(55deg) rotateZ(0deg);
	}
	100% {
		-moz-transform: rotateX(35deg) rotateY(55deg) rotateZ(360deg);
	}
}
/* main content */
/* Audio Visualizer Canvas */
#audio-visualizer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.3;
}

/* Falling Hearts */
#falling-hearts {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.heart {
  position: absolute;
  font-size: 20px;
  color: #ec4899;
  opacity: 0.6;
  animation: fall linear infinite;
  will-change: transform, opacity;
}

@keyframes fall {
  0% {
    transform: translateY(-10vh) translateX(0) rotate(0deg);
    opacity: 0.6;
  }
  95% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(110vh) translateX(var(--swing)) rotate(var(--rotate));
    opacity: 0;
  }
}

#main-content {
  padding: 20px;
  min-height: 100vh;
  opacity: 0;
  transition: opacity 0.5s ease-in;
  position: relative;
}

#main-content.fade-in {
  opacity: 1;
}

/* nút music - đơn giản thôi */
.music-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 50px;
  height: 50px;
  background: #1a1a24;
  border: 1px solid #2a2a3a;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 100;
  color: #6366f1;
}

.music-btn:hover {
  background: #252530;
  border-color: #6366f1;
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.music-btn.playing {
  animation: musicPulse 1.5s ease-in-out infinite;
}

@keyframes musicPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
  }
}

/* nút settings - đơn giản thôi */
.settings-btn-global {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 10px 18px;
  background: #1a1a24;
  border: 1px solid #2a2a3a;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  z-index: 100;
}

.settings-btn-global:hover {
  background: #252530;
  border-color: #6366f1;
  transform: translateY(-1px);
}

.settings-text {
  font-size: 11px;
  font-weight: 600;
  color: #a8a8b8;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* popup settings */
.settings-popup {
  position: fixed;
  top: 0;
  right: -350px;
  width: 320px;
  height: 100vh;
  background: #12121a;
  border-left: 1px solid #2a2a3a;
  transition: right 0.3s ease;
  z-index: 1000;
  overflow-y: auto;
}

.settings-popup.active {
  right: 0;
}

.settings-content {
  padding: 0;
  height: 100%;
}

.settings-header {
  padding: 24px;
  border-bottom: 1px solid #2a2a3a;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.settings-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #e8e8e8;
}

.close-btn {
  background: none;
  border: none;
  font-size: 20px;
  color: #6a6a7a;
  cursor: pointer;
  padding: 4px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s;
}

.close-btn:hover {
  background: #1a1a24;
  color: #e8e8e8;
}

.settings-body {
  padding: 24px;
}

.setting-item {
  margin-bottom: 24px;
}

.setting-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: #a8a8b8;
  margin-bottom: 12px;
}

.theme-select-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.theme-select-group input[type="radio"] {
  display: none;
}

.theme-select-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: #1a1a24;
  border: 1px solid #2a2a3a;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.theme-select-option:hover {
  background: #252530;
  border-color: #3a3a4a;
}

.theme-select-group input[type="radio"]:checked + .theme-select-option {
  background: #1e1e2e;
  border-color: #6366f1;
}

.theme-indicator {
  width: 16px;
  height: 16px;
  border: 2px solid #3a3a4a;
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}

.theme-select-group input[type="radio"]:checked + .theme-select-option .theme-indicator {
  border-color: #6366f1;
}

.theme-select-group input[type="radio"]:checked + .theme-select-option .theme-indicator::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: #6366f1;
  border-radius: 50%;
}

.theme-text {
  font-size: 13px;
  color: #c8c8d8;
}

/* layout chính - centered compact */
.profile-layout {
  max-width: 850px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* cột trái */
.left-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

/* card profile */
.profile-card {
  background: #12121a;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 40px 32px;
  text-align: center;
}

.avatar-large {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  margin: 0 auto 24px;
  overflow: hidden;
  background: #1a1a24;
  border: 3px solid #6366f1;
  position: relative;
}

.avatar-animated {
  animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { 
    border-color: #6366f1;
    box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% { 
    border-color: #8b5cf6;
    box-shadow: 0 0 0 8px rgba(99, 102, 241, 0);
  }
}

.avatar-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-placeholder {
  display: none;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  justify-content: center;
  align-items: center;
  font-size: 28px;
  font-weight: 700;
}

.profile-card h1 {
  font-size: 28px;
  margin: 0 0 8px 0;
  color: #f8f8f8;
  font-weight: 600;
  text-align: center;
}

.nickname {
  font-size: 18px;
  color: #8a8a9a;
  font-style: italic;
  margin: 0 0 12px 0;
  text-align: center;
  font-weight: 400;
  letter-spacing: 0.3px;
}

.poetry-toggle {
  background: transparent;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 4px 10px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
}

.poetry-toggle-text {
  font-size: 10px;
  color: #8a8a9a;
  font-weight: 500;
  text-transform: lowercase;
  letter-spacing: 0.2px;
}

.poetry-toggle:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: #6366f1;
  transform: scale(1.05);
}

.poetry-toggle:hover .poetry-toggle-text {
  color: #6366f1;
}

.role {
  color: #6366f1;
  margin: 4px 0 10px 0;
  font-size: 16px;
  font-weight: 600;
}

.location-inline {
  color: #8a8a9a;
  margin: 0 0 24px 0;
  font-size: 14px;
}

.profile-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  margin: 0 auto 20px;
  border-radius: 2px;
}

.about-compact {
  background: #1a1a24;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: left;
}

.about-compact p {
  color: #b8b8c8;
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.skills-compact {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.skill-badge {
  background: #1a1a24;
  color: #c8c8d8;
  padding: 8px 16px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid #2a2a3a;
  transition: all 0.2s;
}

.skill-badge:hover {
  background: #6366f1;
  color: white;
  border-color: #6366f1;
  transform: translateY(-2px);
}

/* bio section mới */
.bio-section {
  background: #1a1a24;
  padding: 16px;
  border-radius: 8px;
  margin: 0 0 20px 0;
  text-align: left;
}

.bio-title {
  font-size: 13px;
  font-weight: 600;
  color: #f8f8f8;
  margin: 0 0 8px 0;
}

.bio-subtitle {
  font-size: 12px;
  color: #8a8a9a;
  margin: 0 0 12px 0;
}

.bio-text {
  color: #b8b8c8;
  font-size: 13px;
  line-height: 1.6;
  margin: 0 0 12px 0;
  white-space: pre-line;
}

.bio-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.bio-tag {
  background: #0a0a0f;
  color: #c8c8d8;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid #2a2a3a;
}

/* about section trong profile card */
.about-section {
  background: #1a1a24;
  padding: 16px;
  border-radius: 8px;
  margin: 0 0 20px 0;
  text-align: left;
}

.about-title {
  font-size: 13px;
  font-weight: 600;
  color: #f8f8f8;
  margin: 0 0 8px 0;
}

.about-text {
  color: #b8b8c8;
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
}

.status {
  background: #6366f1;
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.location {
  color: #8a8a9a;
  font-size: 12px;
  padding: 6px 12px;
  background: #1a1a24;
  border-radius: 12px;
  display: inline-block;
  border: 1px solid #2a2a3a;
}

/* card thông tin */
.info-card {
  background: #12121a;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 32px 28px;
}

.info-card h3 {
  color: #f8f8f8;
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 16px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding-bottom: 8px;
  border-bottom: 1px solid #2a2a3a;
}

/* info grid mới - xếp ngang cho gọn */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.info-box {
  background: #1a1a24;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid #2a2a3a;
}

.info-label {
  display: block;
  font-size: 11px;
  color: #8a8a9a;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.info-value {
  display: block;
  font-size: 13px;
  color: #f8f8f8;
  font-weight: 500;
}

/* social buttons - xếp ngang */
.social-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.social-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 8px;
  background: #1a1a24;
  border: 1px solid #2a2a3a;
  border-radius: 6px;
  color: #c8c8d8;
  text-decoration: none;
  font-size: 11px;
  font-weight: 500;
  transition: all 0.2s;
  text-align: center;
}

.social-btn:hover {
  background: #252530;
  border-color: #3a3a4a;
  transform: translateY(-2px);
}

.social-btn svg {
  flex-shrink: 0;
}

.social-btn.facebook:hover {
  border-color: #1877f2;
  color: #1877f2;
}

.social-btn.github:hover {
  border-color: #f8f8f8;
  color: #f8f8f8;
}

.social-btn.tiktok:hover {
  border-color: #fe2c55;
  color: #fe2c55;
}

/* poetry popup */
.poetry-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.poetry-popup.active {
  opacity: 1;
  visibility: visible;
}

.poetry-popup-content {
  background: linear-gradient(135deg, #1a1a24 0%, #12121a 100%);
  border: 1px solid #2a2a3a;
  border-radius: 16px;
  max-width: 500px;
  width: 90%;
  overflow: hidden;
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.poetry-popup.active .poetry-popup-content {
  transform: scale(1);
}

.poetry-popup-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899);
}

.poetry-popup-header {
  padding: 24px 28px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #2a2a3a;
}

.poetry-popup-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.poetry-icon {
  font-size: 24px;
}

.poetry-popup-title h3 {
  color: #f8f8f8;
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.5px;
}

.close-poetry-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid #2a2a3a;
  border-radius: 8px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #8a8a9a;
  cursor: pointer;
  transition: all 0.2s;
}

.close-poetry-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #f8f8f8;
  transform: rotate(90deg);
}

.poetry-popup-body {
  padding: 28px 32px 32px;
}

.poetry-text {
  color: #d8d8e8;
  font-size: 14px;
  line-height: 1.9;
  margin: 0 0 20px 0;
  white-space: pre-line;
  font-style: italic;
  text-align: left;
  position: relative;
  padding-left: 16px;
  border-left: 3px solid #6366f1;
}

.poetry-footer {
  display: flex;
  justify-content: flex-end;
}

.poetry-author {
  color: #8a8a9a;
  font-size: 13px;
  font-weight: 500;
  font-style: italic;
}

/* cột phải */
.right-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.about-card, .skills-card {
  background: #12121a;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 28px 24px;
}

.about-card h3, .skills-card h3 {
  color: #f8f8f8;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 16px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding-bottom: 10px;
  border-bottom: 1px solid #2a2a3a;
}

.about-card p {
  color: #b8b8c8;
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  background: #1a1a24;
  color: #c8c8d8;
  padding: 8px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid #2a2a3a;
  transition: all 0.2s;
}

.skill-tag:hover {
  background: #6366f1;
  color: white;
  border-color: #6366f1;
  transform: translateY(-2px);
}

/* light mode - đơn giản thôi */
body:not(.dark-mode) {
  background: #f5f5f7;
  color: #1a1a1a;
}

body:not(.dark-mode) #loading-screen {
  background: #f5f5f7;
}

body:not(.dark-mode) .cssload-inner.cssload-one {
  border-bottom-color: #6366f1;
}

body:not(.dark-mode) .cssload-inner.cssload-two {
  border-right-color: #8b5cf6;
}

body:not(.dark-mode) .cssload-inner.cssload-three {
  border-top-color: #ec4899;
}

body:not(.dark-mode) .settings-btn-global {
  background: white;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .settings-btn-global:hover {
  background: #fafafa;
  border-color: #6366f1;
}

body:not(.dark-mode) .music-btn {
  background: white;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .music-btn:hover {
  background: #fafafa;
  border-color: #6366f1;
}

body:not(.dark-mode) .settings-text {
  color: #5a5a6a;
}

body:not(.dark-mode) .settings-popup {
  background: white;
  border-left-color: #e5e5e7;
}

body:not(.dark-mode) .settings-header {
  border-bottom-color: #e5e5e7;
}

body:not(.dark-mode) .settings-header h3 {
  color: #1a1a1a;
}

body:not(.dark-mode) .close-btn {
  color: #6a6a7a;
}

body:not(.dark-mode) .close-btn:hover {
  background: #f5f5f7;
  color: #1a1a1a;
}

body:not(.dark-mode) .setting-label {
  color: #5a5a6a;
}

body:not(.dark-mode) .theme-select-option {
  background: #fafafa;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .theme-select-option:hover {
  background: #f5f5f7;
  border-color: #d5d5d7;
}

body:not(.dark-mode) .theme-select-group input[type="radio"]:checked + .theme-select-option {
  background: #f0f0f2;
  border-color: #6366f1;
}

body:not(.dark-mode) .theme-indicator {
  border-color: #d5d5d7;
}

body:not(.dark-mode) .theme-text {
  color: #3a3a4a;
}

body:not(.dark-mode) .profile-card,
body:not(.dark-mode) .info-card,
body:not(.dark-mode) .about-card,
body:not(.dark-mode) .skills-card {
  background: white;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .profile-card h1,
body:not(.dark-mode) .info-card h3,
body:not(.dark-mode) .about-card h3,
body:not(.dark-mode) .skills-card h3 {
  color: #1a1a1a;
  border-bottom-color: #e5e5e7;
}

body:not(.dark-mode) .nickname {
  color: #6a6a7a;
}

body:not(.dark-mode) .role {
  color: #6366f1;
}

body:not(.dark-mode) .location-inline {
  color: #6a6a7a;
}

body:not(.dark-mode) .about-compact {
  background: #fafafa;
}

body:not(.dark-mode) .about-compact p {
  color: #4a4a5a;
}

body:not(.dark-mode) .skill-badge {
  background: #fafafa;
  color: #3a3a4a;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .skill-badge:hover {
  background: #6366f1;
  color: white;
  border-color: #6366f1;
}

body:not(.dark-mode) .username,
body:not(.dark-mode) .location,
body:not(.dark-mode) .info-item .label {
  color: #6a6a7a;
}

body:not(.dark-mode) .bio-section {
  background: #fafafa;
}

body:not(.dark-mode) .bio-title {
  color: #1a1a1a;
}

body:not(.dark-mode) .bio-subtitle {
  color: #6a6a7a;
}

body:not(.dark-mode) .bio-text {
  color: #4a4a5a;
}

body:not(.dark-mode) .bio-tag {
  background: white;
  color: #3a3a4a;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .about-section {
  background: #fafafa;
}

body:not(.dark-mode) .about-title {
  color: #1a1a1a;
}

body:not(.dark-mode) .about-text {
  color: #4a4a5a;
}

body:not(.dark-mode) .about-card p {
  color: #4a4a5a;
}

body:not(.dark-mode) .info-box {
  background: #fafafa;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .info-label {
  color: #6a6a7a;
}

body:not(.dark-mode) .info-value {
  color: #1a1a1a;
}

body:not(.dark-mode) .social-btn {
  background: #fafafa;
  border-color: #e5e5e7;
  color: #3a3a4a;
}

body:not(.dark-mode) .social-btn:hover {
  background: #f5f5f7;
}

body:not(.dark-mode) .poetry-toggle {
  background: transparent;
  border-color: #d5d5d7;
}

body:not(.dark-mode) .poetry-toggle-text {
  color: #6a6a7a;
}

body:not(.dark-mode) .poetry-toggle:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: #6366f1;
}

body:not(.dark-mode) .poetry-toggle:hover .poetry-toggle-text {
  color: #6366f1;
}

body:not(.dark-mode) .poetry-popup {
  background: rgba(0, 0, 0, 0.5);
}

body:not(.dark-mode) .poetry-popup-content {
  background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
  border-color: #e5e5e7;
}

body:not(.dark-mode) .poetry-popup-header {
  border-bottom-color: #e5e5e7;
}

body:not(.dark-mode) .poetry-popup-title h3 {
  color: #1a1a1a;
}

body:not(.dark-mode) .close-poetry-btn {
  background: rgba(0, 0, 0, 0.05);
  border-color: #e5e5e7;
  color: #6a6a7a;
}

body:not(.dark-mode) .close-poetry-btn:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
}

body:not(.dark-mode) .poetry-text {
  color: #3a3a4a;
  border-left-color: #6366f1;
}

body:not(.dark-mode) .poetry-author {
  color: #6a6a7a;
}

body:not(.dark-mode) .skill-tag {
  background: #fafafa;
  color: #3a3a4a;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .location {
  background: #fafafa;
  border-color: #e5e5e7;
}

/* light mode border effects */
body:not(.dark-mode)::before {
  background: 
    linear-gradient(90deg, #6366f1 0%, transparent 10%, transparent 90%, #6366f1 100%) top,
    linear-gradient(90deg, #8b5cf6 0%, transparent 10%, transparent 90%, #8b5cf6 100%) bottom,
    linear-gradient(0deg, #ec4899 0%, transparent 10%, transparent 90%, #ec4899 100%) left,
    linear-gradient(0deg, #6366f1 0%, transparent 10%, transparent 90%, #6366f1 100%) right;
  background-size: 100% 2px, 100% 2px, 2px 100%, 2px 100%;
  background-repeat: no-repeat;
  background-position: top, bottom, left, right;
}

body:not(.dark-mode)::after {
  border-top-color: #6366f1;
  border-left-color: #6366f1;
}

body:not(.dark-mode) .corner-decoration.top-right {
  border-top-color: #8b5cf6;
  border-right-color: #8b5cf6;
}

body:not(.dark-mode) .corner-decoration.bottom-left {
  border-bottom-color: #ec4899;
  border-left-color: #ec4899;
}

body:not(.dark-mode) .corner-decoration.bottom-right {
  border-bottom-color: #6366f1;
  border-right-color: #6366f1;
}

/* footer */
.footer {
  padding: 28px 20px;
  margin-top: 40px;
}

.footer-content {
  max-width: 850px;
  margin: 0 auto;
  text-align: center;
  background: #12121a;
  border: 1px solid #2a2a3a;
  border-radius: 12px;
  padding: 24px 28px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.footer-brand {
  font-size: 18px;
  font-weight: 600;
  color: #f8f8f8;
  margin: 0;
  letter-spacing: 0.5px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social a {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1a1a24;
  border: 1px solid #2a2a3a;
  border-radius: 8px;
  color: #8a8a9a;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  background: #6366f1;
  border-color: #6366f1;
  color: white;
  transform: translateY(-2px);
}

.footer-divider {
  width: 100%;
  height: 1px;
  background: #2a2a3a;
  margin-bottom: 20px;
}

.footer-bottom {
  text-align: center;
}

.footer-copyright {
  font-size: 12px;
  color: #8a8a9a;
  margin: 0;
}

/* light mode footer */
body:not(.dark-mode) .footer-content {
  background: #ffffff;
  border-color: #e5e5e7;
}

body:not(.dark-mode) .footer-brand {
  color: #1a1a1a;
}

body:not(.dark-mode) .footer-divider {
  background: #e5e5e7;
}

body:not(.dark-mode) .footer-copyright {
  color: #6a6a7a;
}

body:not(.dark-mode) .footer-social a {
  background: #fafafa;
  border-color: #e5e5e7;
  color: #6a6a7a;
}

body:not(.dark-mode) .footer-social a:hover {
  background: #6366f1;
  border-color: #6366f1;
  color: white;
}

/* responsive */
@media (max-width: 768px) {
  .footer-top {
    flex-direction: column;
    gap: 16px;
  }
  
  .footer-brand {
    font-size: 16px;
  }
}

@media (max-width: 768px) {
  #main-content {
    padding: 12px;
  }
  
  .profile-layout {
    max-width: 100%;
  }
  
  .settings-popup {
    width: 100vw;
    right: -100vw;
  }
  
  .settings-btn-global {
    top: 12px;
    right: 12px;
  }
  
  .profile-card,
  .info-card,
  .about-card,
  .skills-card {
    padding: 20px 16px;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
  }
  
  .social-links {
    grid-template-columns: 1fr;
  }
}