/*
 * YİĞİT'S PORTFOLIO CARD WEBSITE - PREMIUM DESIGN SYSTEM
 * 
 * Re-designed with high-end digital agency standards.
 * Features organic mesh gradients, double-bezel glass layers,
 * a circular top-right theme switcher with icons, and custom transitions.
 */

/* ==========================================================================
   1. VARIABLES & PALETTES
   ========================================================================== */
:root {
  /* Fonts */
  --font-display: 'Syne', system-ui, -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Animation */
  --ease-spring: cubic-bezier(0.25, 1, 0.3, 1);
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-speed: 0.5s;

  /* Brand Social Colors */
  --social-github: #ffffff;
  --social-linkedin: #0a66c2;
  --social-twitter: #1d9bf0;
  --social-instagram: #e1306c;
  --social-mail: #ea4335;
}
/* --- THEME 1: COSMIC OBSIDIAN (Vibrant Electric Purple & Deep Black) --- */
body.theme-cosmic {
  --bg-color: #06040c; /* Deep rich purple-black */
  --bg-glow-color: rgba(168, 85, 247, 0.09); /* Vibrant background gradient center */
  --text-primary: #f3f4f6;
  --text-secondary: #a78bfa; /* Tinted violet secondary text */
  --accent-color: #b56bf5; /* Electric Violet */
  --accent-glow: rgba(168, 85, 247, 0.35);
  
  /* Double Bezel Card */
  --card-outer-bg: rgba(20, 14, 32, 0.45); /* Highly saturated purple-bezel */
  --card-outer-border: rgba(168, 85, 247, 0.16);
  --card-inner-bg: rgba(10, 8, 20, 0.88);
  --card-inner-border: rgba(255, 255, 255, 0.07);
  --card-shine: rgba(255, 255, 255, 0.08);
  --card-shadow: rgba(0, 0, 0, 0.75);
  --card-glow-shadow: rgba(168, 85, 247, 0.16); /* Enhanced purple glow outline */

  /* Ambient Mesh Orbs */
  --orb-1: rgba(99, 102, 241, 0.18);  /* Electric Indigo */
  --orb-2: rgba(168, 85, 247, 0.22); /* Electric Violet */
  --orb-3: rgba(6, 182, 212, 0.12);   /* Electric Cyan */

  /* UI Subtleties */
  --el-bg: rgba(168, 85, 247, 0.03);
  --el-border: rgba(168, 85, 247, 0.08);
  --el-hover-bg: rgba(168, 85, 247, 0.12);
  --el-hover-border: rgba(168, 85, 247, 0.3);
  --scrollbar-thumb: rgba(168, 85, 247, 0.3);

  --social-github: #ffffff;
}

/* --- THEME 2: SOLAR BRONZE (Saturated Sunset Amber & Copper) --- */
body.theme-solar {
  --bg-color: #0b0806;
  --bg-glow-color: rgba(249, 115, 22, 0.08);
  --text-primary: #fafaf9;
  --text-secondary: #d97706; /* Warm amber */
  --accent-color: #f97316; /* Bronze Orange */
  --accent-glow: rgba(249, 115, 22, 0.35);

  /* Double Bezel Card */
  --card-outer-bg: rgba(32, 22, 16, 0.45);
  --card-outer-border: rgba(249, 115, 22, 0.16);
  --card-inner-bg: rgba(18, 12, 10, 0.88);
  --card-inner-border: rgba(255, 255, 255, 0.06);
  --card-shine: rgba(255, 255, 255, 0.06);
  --card-shadow: rgba(0, 0, 0, 0.78);
  --card-glow-shadow: rgba(249, 115, 22, 0.16);

  /* Ambient Mesh Orbs */
  --orb-1: rgba(249, 115, 22, 0.15); /* Sunset Amber */
  --orb-2: rgba(234, 179, 8, 0.12);  /* Gold */
  --orb-3: rgba(120, 53, 4, 0.15);   /* Dark Bronze */

  /* UI Subtleties */
  --el-bg: rgba(249, 115, 22, 0.03);
  --el-border: rgba(249, 115, 22, 0.08);
  --el-hover-bg: rgba(249, 115, 22, 0.1);
  --el-hover-border: rgba(249, 115, 22, 0.3);
  --scrollbar-thumb: rgba(249, 115, 22, 0.3);

  --social-github: #ffffff;
}

/* --- THEME 3: LIQUID PLATINUM (Frosted Silver & Cobalt Ice) --- */
body.theme-platinum {
  --bg-color: #dbe2f0; /* Silver base */
  --bg-glow-color: rgba(56, 189, 248, 0.15);
  --text-primary: #0f172a;
  --text-secondary: #0284c7; /* Ice Blue */
  --accent-color: #0088cc;
  --accent-glow: rgba(0, 136, 204, 0.25);

  /* Double Bezel Card */
  --card-outer-bg: rgba(255, 255, 255, 0.55);
  --card-outer-border: rgba(2, 132, 199, 0.2);
  --card-inner-bg: rgba(248, 250, 252, 0.72);
  --card-inner-border: rgba(255, 255, 255, 0.85);
  --card-shine: rgba(255, 255, 255, 0.4);
  --card-shadow: rgba(15, 23, 42, 0.08);
  --card-glow-shadow: rgba(2, 132, 199, 0.08);

  /* Ambient Mesh Orbs */
  --orb-1: rgba(56, 189, 248, 0.28);  /* Ice Blue */
  --orb-2: rgba(165, 180, 252, 0.25); /* Lavender */
  --orb-3: rgba(203, 213, 225, 0.35); /* Silver */

  /* UI Subtleties */
  --el-bg: rgba(255, 255, 255, 0.5);
  --el-border: rgba(255, 255, 255, 0.75);
  --el-hover-bg: rgba(2, 132, 199, 0.12);
  --el-hover-border: rgba(2, 132, 199, 0.4);
  --scrollbar-thumb: rgba(2, 132, 199, 0.3);

  --social-github: #0f172a;
}

/* ==========================================================================
   2. SYSTEM SETUP & RESET
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-drag: none;
}

html,body {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-body);
  background-color: var(--bg-color);
  /* Saturated radial background gradient focused behind the card */
  background-image: radial-gradient(circle at 50% 50%, var(--bg-glow-color, rgba(168, 85, 247, 0.09)) 0%, var(--bg-color) 75%);
  color: var(--text-primary);
  overflow-x: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: 
    background-color var(--transition-speed) var(--ease-spring),
    background-image var(--transition-speed) var(--ease-spring);
}



/* ==========================================================================
   3. MESH ORBS BACKGROUND
   ========================================================================== */
.ambient-background {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  will-change: transform, background-color;
  transition: background-color var(--transition-speed) var(--ease-spring);
}

.orb-1 {
  width: 55vw;
  height: 55vw;
  max-width: 600px;
  background-color: var(--orb-1);
  top: -15%;
  left: -15%;
  animation: driftOrb1 30s infinite ease-in-out alternate;
}

.orb-2 {
  width: 50vw;
  height: 50vw;
  max-width: 500px;
  background-color: var(--orb-2);
  bottom: -20%;
  right: -10%;
  animation: driftOrb2 25s infinite ease-in-out alternate;
}

.orb-3 {
  width: 40vw;
  height: 40vw;
  max-width: 450px;
  background-color: var(--orb-3);
  top: 35%;
  left: 35%;
  animation: driftOrb3 20s infinite ease-in-out alternate;
}

@keyframes driftOrb1 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(12%, 18%) scale(1.1); }
}

@keyframes driftOrb2 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-10%, -18%) scale(1.15); }
}

@keyframes driftOrb3 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(15%, -8%) scale(0.95); }
}

/* ==========================================================================
   4. LAYOUT CONTROLLERS
   ========================================================================== */
.page-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.perspective-wrapper {
  perspective: 2000px;
  width: 100%;
  max-width: 520px; /* Expanded card width (Kullanıcı feedback: "projeler kısmı cok kucuk ya biraz genislet") */
  display: flex;
  justify-content: center;
  align-items: center;
}

/* ==========================================================================
   5. EXPENSIVE DOUBLE-BEZEL CARD ARCHITECTURE
   ========================================================================== */
.card-outer-shell {
  position: relative;
  width: 100%;
  padding: 0.45rem; /* Clean, tight outer bezel spacing */
  background-color: var(--card-outer-bg);
  border: 1px solid var(--card-outer-border);
  border-radius: 2.75rem; /* Large outer squircle radius */
  box-shadow: 
    0 30px 60px -15px var(--card-shadow),
    0 0 50px -5px var(--card-glow-shadow);
  backdrop-filter: blur(32px) saturate(190%);
  -webkit-backdrop-filter: blur(32px) saturate(190%);
  
  transform-style: preserve-3d;
  will-change: transform;
  
  --shine-x: 50%;
  --shine-y: 50%;

  transition: 
    background-color var(--transition-speed) var(--ease-spring),
    border-color var(--transition-speed) var(--ease-spring),
    box-shadow 0.6s var(--ease-spring);
}

.card-shine {
  position: absolute;
  inset: 0;
  border-radius: 2.75rem;
  z-index: 3;
  pointer-events: none;
  background: radial-gradient(
    circle 320px at var(--shine-x) var(--shine-y),
    var(--card-shine),
    transparent 80%
  );
  mix-blend-mode: overlay;
  opacity: 0;
  transition: opacity 0.5s var(--ease-spring);
}

/* Inner Bezel Layer */
.card-inner-core {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 2.5rem 2.25rem;
  border-radius: calc(2.75rem - 0.45rem); /* Strict concentric match */
  background-color: var(--card-inner-bg);
  border: 1px solid var(--card-inner-border);
  box-shadow: inset 0 1.5px 1px rgba(255, 255, 255, 0.04);
  transform-style: preserve-3d;

  transition: 
    background-color var(--transition-speed) var(--ease-spring),
    border-color var(--transition-speed) var(--ease-spring);
}

/* Parallax Depth Elements */
.parallax-element {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.12s ease-out;
}

/* ==========================================================================
   6. CARD DETAILS & IDENTITY
   ========================================================================== */

/* Header Area */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.25rem;
  transform: translateZ(25px);
}

/* Status Indicator Dot */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--el-bg);
  border: 1px solid var(--el-border);
  padding: 0.4rem 0.85rem;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981; /* Muted green */
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
  animation: pulseDot 2.2s infinite ease-in-out;
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.15); }
}

.status-text {
  color: var(--text-primary);
}

/* Location Badge */
.location-pill {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--el-bg);
  border: 1px solid var(--el-border);
  padding: 0.4rem 0.85rem;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.location-pill i {
  color: var(--accent-color);
  font-size: 0.8rem;
}

/* Hero Section */
.card-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 2.5rem;
}

/* Double-Bezel Avatar */
.avatar-outer-shell {
  width: 130px;
  height: 130px;
  padding: 0.5rem;
  background-color: var(--el-bg);
  border: 1px solid var(--el-border);
  border-radius: 50%;
  margin-bottom: 1.25rem;
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.5);
  transform: translateZ(60px);
}

.avatar-inner-core {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--card-inner-border);
  background-color: var(--bg-color);
}

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

/* Identity block */
.identity-block {
  transform: translateZ(40px);
}

.user-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.5rem;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.surname-highlight {
  color: transparent;
  -webkit-text-stroke: 1px var(--text-primary);
}

.user-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ==========================================================================
   7. NAVIGATION SYSTEM (TABS)
   ========================================================================== */
.tab-navigation {
  position: relative;
  display: flex;
  background-color: var(--el-bg);
  border: 1px solid var(--el-border);
  padding: 0.25rem;
  border-radius: 1.25rem;
  margin-bottom: 2rem;
  z-index: 5;
  transform: translateZ(30px);
}

.active-tab-indicator {
  position: absolute;
  top: 0.25rem;
  bottom: 0.25rem;
  left: 0.25rem;
  width: calc(50% - 0.25rem);
  border-radius: 1rem;
  background-color: var(--accent-color);
  box-shadow: 0 4px 18px var(--accent-glow);
  z-index: 1;
  pointer-events: none;
  transition: transform 0.4s var(--ease-spring);
}

.tab-btn {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
  background: none;
  padding: 0.8rem 0.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  z-index: 2;
  border-radius: 1rem;
  outline: none;
  transition: color 0.3s var(--ease-spring), transform 0.15s var(--ease-spring);
}

.tab-btn i {
  font-size: 1.25rem;
  transition: transform 0.3s var(--ease-spring);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn:hover i {
  transform: scale(1.12);
}

.tab-btn:active {
  transform: scale(0.95);
}

.tab-btn.active {
  color: #ffffff;
}

/* ==========================================================================
   8. TAB PANELS CONTENT
   ========================================================================== */
.panels-container {
  position: relative;
  width: 100%;
  min-height: 220px;
  overflow: hidden;
  transform: translateZ(20px);
}

.tab-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  pointer-events: none;
  transform: translateY(15px) scale(0.98);
  transition: 
    opacity 0.4s var(--ease-spring),
    transform 0.4s var(--ease-spring);
}

.tab-panel.active {
  position: relative;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Bio & Socials */
.bio-text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 1.25rem; /* Reduced slightly to balance the new about-text */
  text-align: center;
  font-weight: 400;
}

.about-text {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  opacity: 0.8;
  margin-bottom: 2rem;
  text-align: center;
  font-weight: 400;
}

.social-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
  transform: translateZ(25px);
}

.social-icon-link {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.45rem; /* Compact size, slightly enlarged as requested */
  transition: color 0.3s var(--ease-spring), transform 0.3s var(--ease-spring);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  position: relative;
  text-decoration: none;
}

body.theme-platinum .social-icon-link {
  color: rgba(15, 23, 42, 0.75);
}

.social-icon-link i {
  color: inherit;
  transition: transform 0.3s var(--ease-spring);
}

.social-icon-link:hover {
  color: #ffffff;
  transform: translateY(-2px);
}

body.theme-platinum .social-icon-link:hover {
  color: #0f172a;
}

.social-icon-link:hover i {
  transform: scale(1.15);
}

.social-icon-link:active {
  transform: scale(0.95);
}

/* Tooltips */
.social-icon-link::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: -2.35rem;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background-color: rgba(12, 10, 16, 0.9);
  border: 1px solid var(--el-border);
  color: #fff;
  font-size: 0.65rem;
  font-family: var(--font-body);
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 0.5rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-spring), transform 0.3s var(--ease-spring);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.25);
  z-index: 10;
}

body.theme-platinum .social-icon-link::after {
  background-color: rgba(255, 255, 255, 0.95);
  color: #0f172a;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.social-icon-link:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Projects Section */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 340px; /* Expanded projects height (Kullanıcı feedback: "projeler kısmı cok kucuk ya biraz genislet") */
  overflow-y: auto;
  padding-right: 0.35rem;
  
  /* Görsel olarak aşağı kaydırılabileceğini hissettiren alt maskeleme (Scroll Fade indicator) */
  mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 85%, transparent 100%);
}

.projects-list::-webkit-scrollbar {
  width: 4px;
}

.projects-list::-webkit-scrollbar-track {
  background: transparent;
}

.projects-list::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 99px;
  transition: background-color 0.3s var(--ease-spring);
}

.projects-list::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

/* Premium Project Card Double-Bezel Split Layout */
.project-card {
  position: relative;
  background-color: var(--el-bg);
  border: 1px solid var(--el-border);
  padding: 0.9rem 1.15rem;
  border-radius: 1.15rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  transition: 
    background-color 0.4s var(--ease-spring), 
    border-color 0.4s var(--ease-spring),
    transform 0.4s var(--ease-spring),
    padding-right 0.4s var(--ease-spring);
}

.project-card:hover {
  background-color: var(--el-hover-bg);
  border-color: var(--el-hover-border);
  transform: translateY(-2px);
  padding-right: 2.75rem;
}

/* Left side rounded image thumbnail */
.project-image-container {
  width: 60px;
  height: 60px;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--el-border);
  background-color: rgba(0, 0, 0, 0.2);
  flex-shrink: 0;
  transition: border-color 0.4s var(--ease-spring);
}

.project-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease-spring);
}

.project-card:hover .project-image-container img {
  transform: scale(1.08);
}

/* Right side content layout */
.project-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0; /* Prevents overflow */
}

.project-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.project-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: normal;
  line-height: 1.35;
}

.project-tag {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background-color: var(--el-border);
  border: 1px solid var(--el-border);
  color: var(--accent-color);
  border-radius: 99px;
  flex-shrink: 0;
}

.project-desc {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-arrow {
  position: absolute;
  right: 1.15rem;
  top: 50%;
  transform: translateY(-50%) scale(0.75);
  opacity: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--accent-color);
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.3s var(--ease-spring), transform 0.3s var(--ease-elastic);
  box-shadow: 0 4px 10px var(--accent-glow);
}

.project-arrow i {
  font-size: 0.8rem;
}

.project-card:hover .project-arrow {
  opacity: 1;
  transform: translateY(-50%) scale(1) translateX(3px);
}

/* Skills Section */
.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  padding: 0.25rem 0;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
}

.skill-name {
  color: var(--text-primary);
}

.skill-percentage {
  font-family: var(--font-mono);
  color: var(--accent-color);
}

.skill-bar-outer {
  width: 100%;
  height: 6px;
  background-color: var(--el-border);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.01);
}

.skill-bar-inner {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-glow));
  border-radius: 99px;
  box-shadow: 0 0 8px var(--accent-glow);
  transition: width 1.2s cubic-bezier(0.19, 1, 0.22, 1);
}

/* ==========================================================================
   9. TOP-RIGHT CIRCULAR THEME MENU
   ========================================================================== */
.theme-menu-container {
  position: fixed;
  top: 1.75rem;
  right: 1.75rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

/* Trigger Button */
.theme-menu-trigger {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--card-outer-border);
  background-color: var(--card-outer-bg);
  color: var(--text-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 24px var(--card-shadow);
  outline: none;
  transition: 
    transform 0.3s var(--ease-elastic), 
    background-color var(--transition-speed) var(--ease-spring),
    border-color var(--transition-speed) var(--ease-spring);
}

.theme-menu-trigger i {
  font-size: 1.2rem;
  transition: transform 0.4s var(--ease-spring);
}

.theme-menu-trigger:hover {
  transform: scale(1.08);
  border-color: var(--el-hover-border);
}

.theme-menu-trigger:hover i {
  transform: rotate(20deg);
}

.theme-menu-trigger:active {
  transform: scale(0.95);
}

/* Dropdown Options Box */
.theme-options-dropdown {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  background-color: var(--card-inner-bg);
  border: 1px solid var(--card-inner-border);
  padding: 0.5rem;
  border-radius: 1.5rem;
  box-shadow: 0 15px 35px var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px) scale(0.9);
  transform-origin: top right;
  transition: 
    opacity 0.45s var(--ease-spring), 
    transform 0.45s var(--ease-spring),
    background-color var(--transition-speed) var(--ease-spring),
    border-color var(--transition-speed) var(--ease-spring);
}

/* Expanded state activated by JS class */
.theme-menu-container.expanded .theme-options-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Individual Theme Orb Button with Icon */
.theme-selector-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--el-border);
  background-color: var(--el-bg);
  color: var(--text-secondary);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  position: relative;
  outline: none;
  transition: 
    transform 0.3s var(--ease-elastic), 
    background-color 0.3s var(--ease-spring), 
    color 0.3s var(--ease-spring),
    border-color 0.3s var(--ease-spring);
}

.theme-selector-btn i {
  font-size: 1rem;
}

.theme-selector-btn:hover {
  transform: scale(1.1);
  color: var(--text-primary);
}

/* Color codes details per button when active/focused */
.theme-selector-btn[data-theme="cosmic"] {
  --theme-main: #a855f7;
}
.theme-selector-btn[data-theme="solar"] {
  --theme-main: #f97316;
}
.theme-selector-btn[data-theme="platinum"] {
  --theme-main: #0284c7;
}

.theme-selector-btn.active {
  background-color: var(--theme-main);
  border-color: var(--theme-main);
  color: #ffffff !important;
  box-shadow: 0 0 12px rgba(var(--theme-glow, 0), var(--theme-glow, 0), var(--theme-glow, 0), 0.4);
}

/* Special theme glow calculations for shadows when active */
.theme-selector-btn[data-theme="cosmic"].active {
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.45);
}
.theme-selector-btn[data-theme="solar"].active {
  box-shadow: 0 0 12px rgba(249, 115, 22, 0.45);
}
.theme-selector-btn[data-theme="platinum"].active {
  box-shadow: 0 0 12px rgba(2, 132, 199, 0.45);
}

/* Tooltip definitions pointing left */
.theme-selector-btn::after {
  content: attr(data-name);
  position: absolute;
  right: calc(100% + 0.65rem);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background-color: rgba(12, 10, 16, 0.9);
  color: #fff;
  border: 1px solid var(--el-border);
  font-size: 0.65rem;
  font-weight: 500;
  padding: 0.3rem 0.6rem;
  border-radius: 0.45rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-spring), transform 0.3s var(--ease-spring);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

/* Light mode tooltip styling */
body.theme-platinum .theme-selector-btn::after {
  background-color: rgba(255, 255, 255, 0.95);
  color: #0f172a;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.theme-selector-btn:hover::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* ==========================================================================
   10. ENTRY ANIMATIONS & RESPONSIVE
   ========================================================================== */
.page-container {
  opacity: 0;
  transform: translateY(20px);
  filter: blur(4px);
  animation: revealContent 1s var(--ease-spring) forwards;
}

@keyframes revealContent {
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@media (max-width: 768px) {
  .page-container {
    padding: 2rem 0.75rem 0.75rem 0.75rem; /* Compact top/bottom padding for mobile height fit */
    justify-content: center;
    min-height: 100dvh;
    height: 100dvh;
    overflow: hidden; /* Lock viewport height */
  }

  .theme-menu-container {
    top: 0.85rem;
    right: 0.85rem;
  }

  .perspective-wrapper {
    max-width: 100%;
  }

  .card-outer-shell {
    border-radius: 2.25rem;
    padding: 0.35rem;
  }

  .card-inner-core {
    padding: 1rem 0.9rem; /* Tighter padding to save vertical space */
    border-radius: calc(2.25rem - 0.35rem);
  }

  .card-header {
    margin-bottom: 0.75rem; /* Reduced spacer */
  }

  .card-hero {
    margin-bottom: 0.75rem; /* Reduced spacer */
  }

  .avatar-outer-shell {
    width: 90px; /* Larger mobile avatar size (User request: logo buyuk olsun) */
    height: 90px;
    padding: 0.3rem;
    margin-bottom: 0.5rem;
  }

  .user-name {
    font-size: 1.65rem; /* Slightly smaller name font */
  }

  .tab-navigation {
    margin-bottom: 0.75rem; /* Reduced spacer */
  }

  .tab-btn {
    padding: 0.65rem 0.25rem;
  }
  
  .tab-btn i {
    font-size: 1.1rem;
  }

  .panels-container {
    min-height: 160px; /* Reduced min height on mobile */
  }

  .bio-text {
    margin-bottom: 0.5rem; /* Reduced spacer */
    font-size: 0.85rem;
  }

  .about-text {
    font-size: 0.82rem;
    line-height: 1.5;
    margin-bottom: 0.75rem;
  }

  /* Compact project layout on mobile to prevent overflow */
  .project-card {
    padding: 0.7rem 0.85rem;
    gap: 0.75rem;
  }
  
  .project-card:hover {
    padding-right: 0.85rem; /* Disable horizontal layout shifts on mobile hover/tap */
    transform: none;
  }
  
  .project-card:hover .project-arrow {
    opacity: 0;
    transform: none;
  }

  .project-card:hover .project-image-container img {
    transform: none;
  }

  .project-image-container {
    width: 48px; /* Slightly smaller image to save horizontal space */
    height: 48px;
    border-radius: 0.5rem;
  }

  .project-header-row {
    flex-direction: column; /* Stack title and tag vertically to fit correctly on narrow screens */
    align-items: flex-start;
    gap: 0.25rem;
  }

  .project-title {
    font-size: 0.88rem;
  }

  .project-desc {
    font-size: 0.74rem;
  }

  .social-grid {
    gap: 1.15rem; /* Closer gaps for mobile social footer */
    margin-top: 1rem;
  }

  .social-icon-link {
    font-size: 1.3rem; /* Compact icon size on mobile, slightly enlarged as requested */
  }

  .projects-list {
    max-height: 170px; /* Reduced projects height on mobile to guarantee viewport fit */
  }
}

/* Height-based media queries for shorter mobile devices (e.g. iPhone SE, screen height <= 680px) */
@media (max-width: 768px) and (max-height: 680px) {
  .page-container {
    padding: 1rem 0.75rem 0.5rem 0.75rem;
  }
  
  .card-inner-core {
    padding: 0.85rem 0.85rem;
  }
  
  .avatar-outer-shell {
    width: 76px;
    height: 76px;
  }
  
  .user-name {
    font-size: 1.45rem;
  }
  
  .panels-container {
    min-height: 140px;
  }
  
  .projects-list {
    max-height: 120px;
  }

  .social-grid {
    margin-top: 0.75rem;
  }
}

/* Extreme height safety media query (screen height <= 580px) */
@media (max-width: 768px) and (max-height: 580px) {
  .card-header {
    display: none; /* Hide header completely to save vertical space */
  }
  .avatar-outer-shell {
    display: none; /* Hide avatar completely to save vertical space */
  }
  .page-container {
    padding: 0.5rem;
  }
  .projects-list {
    max-height: 90px;
  }
}

/* GPU acceleration hardware overrides */
.orb, .card-outer-shell, .avatar-outer-shell, .active-tab-indicator, .theme-selector-btn, .theme-menu-trigger {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}