/* Premium Sans-Serif Typography & Variable Definitions */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Premium Dark Theme (Default) */
  --bg-primary: #07090e;
  --bg-secondary: #0e121b;
  --bg-card: rgba(14, 18, 27, 0.75);
  --border-color: rgba(255, 255, 255, 0.04);
  --border-hover: rgba(244, 63, 94, 0.25);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #5e687a;
  
  --accent-color: #f43f5e; /* Crimson Red */
  --accent-light: #fda4af; /* Rose Coral */
  --accent-dark: #be123c;
  --accent-gradient: linear-gradient(135deg, #f43f5e 0%, #be123c 100%);
  --accent-glow: rgba(244, 63, 94, 0.06);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.08);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.08);
  --danger: #f43f5e;
  --danger-glow: rgba(244, 63, 94, 0.08);
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-serif: 'Plus Jakarta Sans', -apple-system, sans-serif; /* Tırnaksız olsun */
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 8px 30px -10px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 20px 50px -15px rgba(0, 0, 0, 0.9);
  --shadow-glow: 0 0 15px var(--accent-glow);
  
  --glass-bg: rgba(14, 18, 27, 0.65);
  --glass-blur: blur(20px);
}

[data-theme="light"] {
  /* Premium Light Theme */
  --bg-primary: #fafafb;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.8);
  --border-color: rgba(0, 0, 0, 0.05);
  --border-hover: rgba(225, 29, 72, 0.3);
  
  --text-primary: #0f141f;
  --text-secondary: #5e6675;
  --text-muted: #949eb0;
  
  --accent-color: #e11d48;
  --accent-light: #f43f5e;
  --accent-dark: #9f1239;
  --accent-gradient: linear-gradient(135deg, #f43f5e 0%, #be123c 100%);
  --accent-glow: rgba(225, 29, 72, 0.06);
  
  --shadow-sm: 0 2px 8px -2px rgba(15, 20, 31, 0.05);
  --shadow-md: 0 8px 30px -10px rgba(15, 20, 31, 0.06);
  --shadow-lg: 0 20px 50px -15px rgba(15, 20, 31, 0.1);
  --shadow-glow: 0 0 15px var(--accent-glow);
  
  --glass-bg: rgba(255, 255, 255, 0.85);
}

/* Ambient Radial Glow Overlays */
body::before {
  content: "";
  position: fixed;
  top: -10%;
  left: -5%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  bottom: -10%;
  right: -5%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.015) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
}

/* Base resets */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  letter-spacing: -0.01em;
  transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

button, input, select, textarea {
  font-family: inherit;
  color: inherit;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* App Containers */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar (Desktop) */
.sidebar {
  width: 250px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 100;
  padding: 2.25rem 1.5rem;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  padding-left: 0.5rem;
}

.logo-icon {
  border: 1.5px solid var(--accent-color);
  color: var(--accent-color);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: var(--shadow-glow);
}

.logo-text {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex-grow: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border-left: 2px solid transparent;
  cursor: pointer;
}

.nav-link:hover {
  color: var(--text-primary);
  padding-left: 1.1rem;
}

.nav-link.active {
  color: var(--accent-color);
  border-left-color: var(--accent-color);
  background-color: var(--accent-glow);
}

.nav-link svg {
  width: 18px;
  height: 18px;
  stroke: var(--text-muted);
  transition: stroke 0.2s ease;
}

.nav-link.active svg {
  stroke: var(--accent-color);
}

.sidebar-footer {
  margin-top: auto;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: transparent;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.theme-toggle-btn:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* Main Workspace */
.main-content {
  flex-grow: 1;
  margin-left: 250px;
  padding: 2.5rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
  max-width: calc(100vw - 250px);
}

/* Top bar details */
.top-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.welcome-section h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 2.1rem;
  margin-bottom: 0.35rem;
  letter-spacing: -0.025em;
}

.welcome-section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Ticking Countdown counter */
.header-stats {
  display: flex;
  align-items: stretch;
  gap: 1.25rem;
}

.countdown-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.countdown-val {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--accent-color);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.countdown-lbl {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 0.25rem;
}

.progress-widget {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  min-width: 170px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.progress-bar-container {
  width: 100%;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 8px rgba(244, 63, 94, 0.3);
}

.streak-widget {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.streak-icon {
  font-size: 1.35rem;
  animation: emberPulse 1.8s infinite alternate;
}

.streak-count {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--accent-color);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.streak-lbl {
  font-size: 0.65rem;
  color: var(--text-secondary);
  font-weight: 700;
  text-transform: uppercase;
}

/* Screens Layout */
.app-screen {
  display: none;
  animation: scaleUpFade 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.app-screen.active {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Premium Card element */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  border-color: var(--border-hover);
}

.card-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: -0.02em;
}

.card-title svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent-color);
}

/* Panel Layout: Grid */
.panel-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.75rem;
}

/* Checklist task elements */
.task-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.task-item:hover {
  background-color: rgba(255, 255, 255, 0.02);
  border-color: rgba(255, 255, 255, 0.08);
}

.task-item.completed {
  border-color: rgba(16, 185, 129, 0.15);
  background-color: rgba(16, 185, 129, 0.015);
}

/* Custom rounded checkbox */
.task-checkbox {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 1px solid var(--text-muted);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  background-color: transparent;
  margin-top: 0.15rem;
}

.task-checkbox:checked {
  background-color: var(--success);
  border-color: var(--success);
}

.task-checkbox:checked::after {
  content: '';
  width: 8px;
  height: 4px;
  border-left: 1.5px solid white;
  border-bottom: 1.5px solid white;
  transform: rotate(-45deg) translate(0.5px, -0.5px);
}

.task-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.task-item.completed .task-name {
  color: var(--text-muted);
  text-decoration: line-through;
}

.task-subtext {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

/* Badges */
.badge {
  padding: 0.1rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-blue {
  background-color: rgba(59, 130, 246, 0.08);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.badge-purple {
  background-color: rgba(244, 63, 94, 0.06);
  color: var(--accent-light);
  border: 1px solid rgba(244, 63, 94, 0.15);
}

/* Empty States */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.empty-state-icon {
  width: 40px;
  height: 40px;
  stroke: var(--text-muted);
  opacity: 0.5;
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 280px;
}

/* Leitner Box Study panel widget */
.review-widget {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.review-icon-box {
  background: var(--accent-gradient);
  color: var(--bg-primary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.review-icon-box svg {
  width: 18px;
  height: 18px;
  stroke: #07090e;
}

.review-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
}

.review-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.1rem;
}

.review-btn {
  background: var(--accent-gradient);
  color: #07090e;
  border: none;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.25);
}

.review-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.35);
}

/* Curriculum (Konu Haritası) Accordions */
.topic-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.search-input-wrapper {
  position: relative;
  flex-grow: 1;
  max-width: 280px;
}

.search-input {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1rem 0.55rem 2.25rem;
  font-size: 0.85rem;
  transition: all 0.25s ease;
}

.search-input:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: var(--shadow-glow);
}

.search-icon {
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  stroke: var(--text-muted);
}

.filter-buttons {
  display: flex;
  gap: 0.5rem;
}

.btn-filter {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

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

.btn-filter.active {
  background-color: transparent;
  border-color: var(--accent-color);
  color: var(--accent-color);
  box-shadow: var(--shadow-glow);
}

.course-accordion {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-secondary);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.course-accordion.open {
  border-color: rgba(244, 63, 94, 0.2);
}

.course-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
  cursor: pointer;
  user-select: none;
}

.course-title-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.course-icon-container {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
}

.course-icon-container svg {
  width: 15px;
  height: 15px;
  stroke: var(--text-secondary);
}

.course-title-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
}

.course-progress-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--accent-light);
}

.accordion-chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  stroke: var(--text-muted);
}

.course-accordion.open .accordion-chevron {
  transform: rotate(180deg);
  stroke: var(--accent-color);
}

.course-body {
  display: none;
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.08);
  padding: 0.5rem;
}

.course-accordion.open .course-body {
  display: block;
}

.topic-row {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.2fr;
  align-items: center;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
  gap: 0.5rem;
}

.topic-row:not(:last-child) {
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.topic-row:hover {
  background-color: rgba(255, 255, 255, 0.01);
}

.topic-name-col {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.priority-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.priority-high {
  background-color: var(--danger-glow);
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.15);
}

.priority-medium {
  background-color: var(--warning-glow);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.15);
}

.priority-low {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

/* Dynamic State cycle button on Topic */
.status-cycle-btn {
  background-color: transparent;
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  min-width: 130px;
  text-align: center;
}

.status-cycle-btn.state-baslamadim {
  color: var(--text-muted);
}

.status-cycle-btn.state-calistim {
  background-color: rgba(244, 63, 94, 0.03);
  color: var(--accent-light);
  border-color: rgba(244, 63, 94, 0.2);
}

.status-cycle-btn.state-soru_cozdum {
  background-color: var(--warning-glow);
  color: var(--warning);
  border-color: rgba(245, 158, 11, 0.2);
}

.status-cycle-btn.state-bitti {
  background-color: var(--success-glow);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.2);
}

.status-cycle-btn:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* Premium form fields */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.form-control {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  transition: all 0.25s ease;
  color: var(--text-primary);
}

.form-control:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: var(--shadow-glow);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f43f5e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 14px;
  padding-right: 2rem;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #07090e;
  border: none;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.35);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

/* 60-Day Planner Setup view */
.plan-setup-wrapper {
  max-width: 440px;
  margin: 3rem auto;
  text-align: center;
  padding: 2.25rem;
}

/* Calendar Day Card Elements */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.day-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.day-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.day-card.active {
  border-color: var(--accent-color);
  background-color: rgba(244, 63, 94, 0.02);
  box-shadow: var(--shadow-glow);
}

.day-card.completed {
  border-color: rgba(16, 185, 129, 0.15);
  background-color: rgba(16, 185, 129, 0.02);
}

.day-number {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
}

.day-card.completed .day-number {
  color: var(--success);
}

.day-date {
  font-size: 0.65rem;
  color: var(--text-secondary);
}

.day-progress {
  width: 70%;
  height: 2px;
  background-color: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-full);
  margin-top: 0.35rem;
  overflow: hidden;
}

.day-progress-fill {
  height: 100%;
  background-color: var(--success);
  width: 0;
  transition: width 0.3s ease;
}

.plan-dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.plan-phase-info {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
}

.phase-indicator {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-secondary);
}

.phase-indicator.active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--accent-glow);
}

.phase-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.phase-1 .phase-dot { background-color: var(--success); }
.phase-2 .phase-dot { background-color: var(--warning); }
.phase-3 .phase-dot { background-color: var(--danger); }

/* Mock Exams (Deneme Takibi) */
.exams-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 1.75rem;
}

.exams-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 450px;
  overflow-y: auto;
}

.exam-card-item {
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.exam-title-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
}

.exam-date-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.exam-net-val {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--accent-color);
}

.score-inputs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.75rem;
  align-items: center;
}

.score-title-lbl {
  grid-column: span 3;
  font-weight: 700;
  font-size: 0.75rem;
  margin-top: 0.75rem;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.25rem;
}

.score-inputs-grid input {
  padding: 0.45rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

/* SVG Line Chart Style */
.chart-container {
  width: 100%;
  height: 220px;
  position: relative;
}

.chart-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.chart-grid-line {
  stroke: var(--border-color);
  stroke-width: 1;
}

.chart-axis-line {
  stroke: var(--border-color);
  stroke-width: 1;
}

.chart-text {
  fill: var(--text-muted);
  font-size: 9px;
  font-family: var(--font-sans);
  font-weight: 600;
}

.chart-line {
  fill: none;
  stroke: var(--accent-color);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-dot {
  fill: var(--bg-secondary);
  stroke: var(--accent-color);
  stroke-width: 2;
  cursor: pointer;
  transition: r 0.2s ease, fill 0.2s ease;
}

.chart-dot:hover {
  r: 6;
  fill: var(--accent-color);
}

/* Weak Subjects panel */
.weak-courses-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.weak-course-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.1rem;
  background-color: var(--danger-glow);
  border: 1px solid rgba(244, 63, 94, 0.12);
  border-radius: var(--radius-md);
}

.weak-course-name {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--danger);
}

.weak-course-btn {
  background-color: rgba(244, 63, 94, 0.05);
  border: 1px solid rgba(244, 63, 94, 0.2);
  color: var(--danger);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.weak-course-btn:hover {
  background-color: var(--danger);
  color: white;
}

/* Flashcards Layout */
.flashcards-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.75rem;
}

.flashcard-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
  min-height: 320px;
  width: 100%;
}

/* 3D Flip Premium cards */
.flip-card-container {
  perspective: 1200px;
  width: 100%;
  max-width: 420px;
  height: 240px;
  cursor: pointer;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  transform-style: preserve-3d;
}

.flip-card-container.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
  background-color: var(--bg-secondary);
}

.flip-card-front {
  background: radial-gradient(circle at 10% 10%, rgba(244, 63, 94, 0.03) 0%, transparent 50%), var(--bg-secondary);
}

.flip-card-back {
  transform: rotateY(180deg);
  background: radial-gradient(circle at 90% 90%, rgba(16, 185, 129, 0.03) 0%, transparent 50%), var(--bg-secondary);
  border-color: rgba(16, 185, 129, 0.15);
}

.card-subject-tag {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-color);
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(244, 63, 94, 0.2);
  padding-bottom: 0.15rem;
}

.card-content-text {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--text-primary);
  word-break: break-word;
}

.card-hint-lbl {
  position: absolute;
  bottom: 1.25rem;
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Leitner Box indicators */
.leitner-boxes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  width: 100%;
  max-width: 420px;
}

.leitner-box-stat {
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.leitner-box-num {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.leitner-box-count {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-color);
  margin-top: 0.1rem;
}

.flashcard-actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  max-width: 420px;
}

.btn-card-action {
  flex-grow: 1;
  padding: 0.65rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
  color: white;
}

.btn-know {
  background-color: var(--success);
}

.btn-know:hover {
  background-color: #059669;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.25);
}

.btn-dont-know {
  background-color: var(--danger);
}

.btn-dont-know:hover {
  background-color: #e11d48;
  box-shadow: 0 0 10px rgba(244, 63, 94, 0.25);
}

/* Wrongs Registry */
.wrongs-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.75rem;
}

.wrongs-list-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 500px;
  overflow-y: auto;
}

.wrong-card {
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.wrong-card.archived {
  opacity: 0.4;
}

.wrong-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.wrong-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
}

.wrong-body-text {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.5;
  white-space: pre-wrap;
}

.wrong-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

.repeat-progress-bar {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.repeat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--text-muted);
}

.repeat-dot.active {
  background-color: var(--success);
  border-color: var(--success);
}

.btn-repeat-action {
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.55rem;
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}

.btn-repeat-action:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

.btn-check-wrong:hover {
  background-color: var(--success-glow);
  border-color: var(--success);
  color: var(--success);
}

/* Animations */
@keyframes scaleUpFade {
  from { opacity: 0; transform: scale(0.985); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes emberPulse {
  0% { transform: scale(1); filter: drop-shadow(0 0 2px rgba(244, 63, 94, 0.3)); }
  100% { transform: scale(1.1); filter: drop-shadow(0 0 8px rgba(244, 63, 94, 0.7)); }
}

/* Mobile responsive navigation styles */
@media (max-width: 900px) {
  .sidebar {
    width: 100%;
    height: auto;
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    border-right: none;
    border-top: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    background-color: rgba(14, 18, 27, 0.95);
    backdrop-filter: blur(25px);
    box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.5);
    z-index: 100;
  }
  
  .logo-container, .sidebar-footer {
    display: none;
  }
  
  .nav-menu {
    flex-direction: row;
    justify-content: space-around;
    gap: 0;
    width: 100%;
  }
  
  .nav-link {
    flex-direction: column;
    align-items: center;
    padding: 0.3rem 0.1rem;
    font-size: 0.65rem;
    gap: 0.1rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
  }
  
  .nav-link:hover {
    padding-left: 0.1rem;
  }
  
  .nav-link.active {
    background: transparent;
    border-color: transparent;
    color: var(--accent-color);
  }
  
  .main-content {
    margin-left: 0;
    padding: 1.5rem 1.25rem 5rem 1.25rem;
    max-width: 100vw;
  }
  
  .top-header {
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
  }
  
  .header-stats {
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  
  .panel-grid, .exams-grid, .flashcards-layout, .wrongs-layout {
    grid-template-columns: 1fr;
  }
  
  .topic-row {
    grid-template-columns: 1fr;
    align-items: flex-start;
    padding: 1rem 0.5rem;
    position: relative;
  }
  
  .priority-col {
    position: absolute;
    top: 1rem;
    right: 0.5rem;
  }
  
  .status-col {
    margin-top: 0.5rem;
    width: 100%;
  }
  
  .status-cycle-btn {
    width: 100%;
  }
}

/* Floating Confetti element */
.confetti {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: fall linear forwards;
  z-index: 1000;
  pointer-events: none;
}

@keyframes fall {
  from { transform: translateY(-50px) rotate(0deg); }
  to { transform: translateY(100vh) rotate(360deg); }
}

.mobile-theme-toggle {
  display: none;
}

@media (max-width: 900px) {
  .mobile-theme-toggle {
    display: block;
    position: absolute;
    top: 1.5rem;
    right: 1.25rem;
    z-index: 101;
  }
}

/* Floating AI Chatbot Widget Styles */
.ai-assistant-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 150;
  font-family: var(--font-sans);
}

.ai-bubble-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(244, 63, 94, 0.4);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
}

.ai-bubble-btn:hover {
  transform: scale(1.08) rotate(5deg);
}

.ai-badge-dot {
  position: absolute;
  top: 1px;
  right: 1px;
  width: 13px;
  height: 13px;
  background-color: var(--success);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.ai-chat-panel {
  position: absolute;
  bottom: 4.5rem;
  right: 0;
  width: 360px;
  height: 480px;
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: scaleUpFade 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.ai-chat-panel.active {
  display: flex;
}

.ai-chat-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-avatar {
  width: 30px;
  height: 30px;
  background: var(--accent-gradient);
  border-radius: 50%;
  color: #07090e;
  font-weight: 800;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-name {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-primary);
}

.ai-status {
  font-size: 0.65rem;
  color: var(--success);
  font-weight: 600;
}

.ai-close-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: color 0.2s ease;
}

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

.ai-chat-messages {
  flex-grow: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.ai-message {
  padding: 0.7rem 0.95rem;
  border-radius: var(--radius-md);
  max-width: 85%;
  font-size: 0.85rem;
  line-height: 1.5;
  word-wrap: break-word;
}

.ai-message.bot {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
  color: var(--text-primary);
}

.ai-message.user {
  background: var(--accent-gradient);
  color: #07090e;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
  font-weight: 500;
}

.ai-message strong {
  font-weight: 700;
  color: inherit;
}

/* Typing Indicator */
.ai-message.typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 0.5rem 0.85rem;
}

.ai-message.typing .dot {
  width: 6px;
  height: 6px;
  background-color: var(--text-muted);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite ease-in-out both;
}

.ai-message.typing .dot:nth-child(1) { animation-delay: -0.32s; }
.ai-message.typing .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* Presets area */
.ai-chat-presets {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  overflow-x: auto;
  background-color: rgba(0, 0, 0, 0.05);
  border-top: 1px solid var(--border-color);
}

.preset-btn {
  white-space: nowrap;
  padding: 0.35rem 0.65rem;
  background-color: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.preset-btn:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

/* Input area */
.ai-chat-input-area {
  padding: 0.75rem 1.25rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.ai-input {
  flex-grow: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

.ai-input:focus {
  border-color: var(--accent-color);
  outline: none;
}

.ai-send-btn {
  background: var(--accent-gradient);
  color: #07090e;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.ai-send-btn:hover {
  opacity: 0.9;
}

@media (max-width: 900px) {
  .ai-assistant-widget {
    bottom: 5.5rem; /* above mobile nav */
    right: 1.25rem;
  }
  .ai-chat-panel {
    width: calc(100vw - 2.5rem);
    right: 0;
    bottom: 4.25rem;
    height: 380px;
  }
}

/* Study Cards (Konu Anlatım) Premium Styles */
.study-card-item {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.study-card-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.study-card-item.studied {
  border-color: rgba(16, 185, 129, 0.2);
  background-color: rgba(16, 185, 129, 0.02);
}

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

.study-card-meta {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.study-card-course {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--accent-color);
  letter-spacing: 0.04em;
}

.study-card-topic {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  line-height: 1.25;
}

.study-card-probability {
  background-color: var(--danger-glow);
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.15);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
  font-weight: 800;
  white-space: nowrap;
}

.study-card-section {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0.85rem;
  background-color: rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.study-card-section-title {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent-light);
}

.study-card-section-content {
  font-size: 0.82rem;
  color: var(--text-primary);
  line-height: 1.5;
}

.study-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
  margin-top: auto;
}

.btn-study-check {
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  color: var(--text-secondary);
  width: 100%;
  text-align: center;
}

.btn-study-check:hover {
  border-color: var(--success);
  color: var(--success);
}

.study-card-item.studied .btn-study-check {
  background-color: var(--success-glow);
  border-color: var(--success);
  color: var(--success);
}

/* Collapsible Study Cards styling */
.study-card-item {
  cursor: pointer;
  user-select: none;
  border-color: var(--border-color);
}

.study-card-header-clickable {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.btn-study-check-header {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 800;
  font-size: 0.75rem;
  color: transparent;
  flex-shrink: 0;
}

.btn-study-check-header:hover {
  border-color: var(--success);
  color: var(--success);
  background-color: rgba(16, 185, 129, 0.05);
}

.study-card-item.studied .btn-study-check-header {
  background-color: var(--success);
  border-color: var(--success);
  color: white;
}

.study-card-status-badge {
  font-size: 0.6rem;
  font-weight: 800;
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.study-card-status-badge.status-calistim {
  color: var(--accent-light);
  background-color: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.3);
}

.study-card-status-badge.status-soru_cozdum {
  color: var(--warning);
  background-color: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
}

.study-card-status-badge.status-bitti {
  color: var(--success);
  background-color: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
}

.study-card-body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, margin 0.3s ease;
}

.study-card-item.expanded .study-card-body {
  max-height: 1200px;
  opacity: 1;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.study-card-toggle-icon {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.study-card-item.expanded .study-card-toggle-icon {
  transform: rotate(180deg);
  color: var(--accent-color);
}