@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&display=swap');

:root {
  --bg: #09090b;
  --sidebar: #121214;

  --accent: #10b981;
  --accent-rgb: 16, 185, 129;
  --accent-glow: rgba(var(--accent-rgb), 0.4);

  --glass: rgba(18, 20, 22, 0.82);
  --border: rgba(255, 255, 255, 0.08);

  --text: #f3f4f6;
  --text-sec: #94a3b8;

  --shadow: 0 18px 60px rgba(0,0,0,0.55);

  --msg-radius: 18px;

  --t-fast: 160ms;
  --t-mid: 260ms;
  --t-slow: 420ms;

  --ease: cubic-bezier(.2,.9,.2,1);

  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  text-decoration: underline;
  filter: brightness(1.2);
}

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  display: flex;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

/* Selection Color */
::selection {
  background: rgba(var(--accent-rgb), 0.35);
  color: #fff;
}

/* Animations */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(18px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes neonPulse {
  0%, 100% { box-shadow: 0 0 14px var(--accent-glow); }
  50%      { box-shadow: 0 0 26px var(--accent-glow); }
}
@keyframes borderGlow {
  0%   { border-color: var(--border); }
  50%  { border-color: rgba(var(--accent-rgb), 0.55); }
  100% { border-color: var(--border); }
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Mobile Topbar */
#topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: calc(12px + var(--safe-top)) 12px 12px;
  border-bottom: 1px solid var(--border);
  background: rgba(3,3,5,0.85);
  backdrop-filter: blur(14px);
  z-index: 2500;
  position: sticky;
  top: 0;
}
.topbar-brand { display: flex; align-items: center; gap: 10px; }
.topbar-title { font-weight: 900; }

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
  color: #fff;
  cursor: pointer;
  transition: transform var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}
.btn-icon:hover {
  transform: translateY(-1px);
  background: rgba(var(--accent-rgb), 0.10);
}

/* Sidebar */
#sidebar {
  width: 280px;
  background: var(--sidebar);
  padding: 20px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform var(--t-slow) var(--ease);
  z-index: 2000;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-weight: 900;
  font-size: 22px;
}

.logo-box {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: neonPulse 3s infinite;
  transition: transform var(--t-mid) var(--ease);
}
.logo-box.small {
  width: 30px;
  height: 30px;
  border-radius: 10px;
}
.logo-box i { color: white; }

.logo-box:hover { transform: translateY(-2px) scale(1.03); }

.btn-new-chat {
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 1), rgba(var(--accent-rgb), 0.75));
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 900;
  margin-bottom: 16px;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), filter var(--t-mid) var(--ease);
}
.btn-new-chat:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(var(--accent-rgb), 0.18);
  filter: brightness(1.05);
}
.btn-new-chat:active { transform: translateY(0); filter: brightness(0.98); }

.sidebar-section { margin-bottom: 16px; overflow-y: auto; flex: 1; }

.section-title {
  font-size: 11px;
  font-weight: 900;
  color: var(--text-sec);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.item-row {
  padding: 12px;
  border-radius: 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-sec);
  transition: transform var(--t-mid) var(--ease),
              background var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease),
              color var(--t-mid) var(--ease);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.02);
  margin-bottom: 8px;
  gap: 10px;
  border: 1px solid rgba(255,255,255,0.03);
}
.item-row:hover {
  background: rgba(255,255,255,0.06);
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.14);
}
.item-row.active {
  background: rgba(var(--accent-rgb), 0.14);
  color: var(--accent);
  border: 1px solid rgba(var(--accent-rgb), 0.22);
}

.sidebar-select {
  width: 100%;
  padding: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  border-radius: 12px;
  outline: none;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.sidebar-select:focus { border-color: var(--accent); }
.sidebar-select option, .sidebar-select optgroup { background-color: #121214; color: #f3f4f6; }

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--text-sec);
}

.footer-link {
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--t-fast) ease, transform var(--t-fast) ease;
}
.footer-link:hover { opacity: 0.9; transform: translateY(-1px); }

.sidebar-user-avatar {
  transition: transform 0.2s var(--ease);
}
.sidebar-user-avatar:hover {
  transform: scale(1.5);
}

/* Main */
#main-chat { flex: 1; display: flex; flex-direction: column; position: relative; height: 100dvh; }

#messages {
  flex: 1;
  overflow-y: auto;
  padding: 80px 18% 150px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

#welcome-ui {
  text-align: center;
  margin-top: 18vh;
}
#welcome-ui h1 { font-size: 52px; letter-spacing: -1px; }
#welcome-ui p { color: var(--text-sec); margin-top: 10px; }

.msg-container {
  margin-bottom: 18px;
  animation: slideUp 0.42s var(--ease) both;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.msg-container.no-anim {
  animation: none !important;
  opacity: 1;
  transform: none;
}
.msg-container.user-container { align-items: flex-end; }

.role-tag {
  font-size: 10px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 4px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
}

.msg-avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: transform 0.2s var(--ease), border-color 0.2s;
  cursor: pointer;
}
.msg-avatar:hover {
  transform: scale(1.8);
  border-color: var(--accent);
  z-index: 10;
}

.msg-latency {
  font-size: 9px;
  opacity: 0.6;
  margin-left: 6px;
  font-weight: 400;
}

/* Typing Dots */
.typing-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
  padding: 6px 4px;
}
.typing-dots span {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: dotBlink 1.4s infinite both;
  opacity: 0.7;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBlink {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
  40% { transform: scale(1.2); opacity: 1; }
}

/* Think Box (DeepSeek CoT) */
.think-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(var(--accent-rgb), 0.3);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}
.think-box[open] {
  background: rgba(var(--accent-rgb), 0.05);
}
.think-box summary {
  padding: 8px 12px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-sec);
  user-select: none;
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.think-box summary:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}
.think-content {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-sec);
  border-top: 1px solid rgba(var(--accent-rgb), 0.15);
  background: rgba(0, 0, 0, 0.1);
  line-height: 1.5;
}

.msg-copy-btn {
  margin-left: 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  font-size: 11px;
  color: var(--text-sec);
}
.msg-copy-btn:hover { color: var(--accent); }
.msg-container:hover .msg-copy-btn { opacity: 1; }
@media (hover: none) {
  .msg-copy-btn { opacity: 0.6; }
}

.msg-tts-btn {
  margin-left: 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s;
  font-size: 11px;
  color: var(--text-sec);
}
.msg-tts-btn:hover { color: var(--accent); }
.msg-container:hover .msg-tts-btn { opacity: 1; }
@media (hover: none) {
  .msg-tts-btn { opacity: 0.6; }
}

/* TTS Active Highlight */
.msg-container.tts-active .content {
  border-color: var(--accent);
  box-shadow: 0 0 25px rgba(var(--accent-rgb), 0.25);
  background: rgba(var(--accent-rgb), 0.08);
}

.content {
  background: var(--glass);
  padding: 12px 16px;
  border-radius: var(--msg-radius);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  overflow-wrap: break-word;
  max-width: 88%;
  transition: transform var(--t-mid) var(--ease),
              border-color var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease);
}
.content:hover {
  border-color: rgba(var(--accent-rgb), 0.22);
  box-shadow: 0 18px 60px rgba(0,0,0,0.25);
  transform: translateY(-1px);
}

.content.user-msg {
  background: rgba(var(--accent-rgb), 0.08);
  border-color: rgba(var(--accent-rgb), 0.2);
}

/* Paragraphs inside content */
.content p {
  margin-bottom: 12px;
  line-height: 1.6;
}
.content p:last-child {
  margin-bottom: 0;
}

/* Headings inside content */
.content h1, .content h2, .content h3, .content h4 {
  margin-top: 18px;
  margin-bottom: 8px;
  font-weight: 700;
  line-height: 1.3;
}
.content h1 { font-size: 1.4em; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 6px; }
.content h2 { font-size: 1.25em; }
.content h3 { font-size: 1.1em; }
.content h1:first-child, .content h2:first-child, .content h3:first-child { margin-top: 0; }

/* Blockquotes inside content */
.content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.03);
  margin: 16px 0;
  padding: 12px 18px;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-sec);
}

/* Tables inside content */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  overflow: hidden;
  font-size: 14px;
}
.content th, .content td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.content th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
}
.content tr:last-child td {
  border-bottom: none;
}
.content tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

/* Lists inside content */
.content ol, .content ul {
  margin: 8px 0;
  padding-left: 26px;
}
.content li {
  margin-bottom: 4px;
}
.content li::marker {
  font-weight: 700;
  color: var(--accent);
}

.msg-image {
  margin-bottom: 10px;
  max-width: 100%;
}
.msg-image img {
  max-width: 300px;
  max-height: 300px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

/* Input */
.input-area {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 34px 15%;
  background: linear-gradient(transparent, var(--bg));
}

.input-glass {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 16px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  backdrop-filter: blur(18px);
  animation: borderGlow 5s infinite;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}
.input-glass:focus-within {
  transform: translateY(-1px);
  border-color: rgba(var(--accent-rgb), 0.28);
  box-shadow: 0 18px 60px rgba(var(--accent-rgb), 0.08);
}

textarea#user-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #fff;
  padding: 10px;
  outline: none;
  resize: none;
  font-size: 16px;
  line-height: 1.4;
  max-height: 180px;
}

#btn-upload {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.05);
  color: var(--text-sec);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
#btn-upload:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text);
}
#btn-upload.has-img {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.1);
}

#img-preview-container {
  position: absolute;
  bottom: 100%;
  left: 15%;
  margin-bottom: 10px;
  background: var(--glass);
  padding: 8px;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: none;
  align-items: flex-start;
  gap: 10px;
  backdrop-filter: blur(12px);
  animation: slideUp 0.2s var(--ease);
}
#img-preview {
  max-height: 80px;
  border-radius: 8px;
  cursor: zoom-in;
}
#btn-clear-img {
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}
#btn-clear-img:hover { background: rgba(239, 68, 68, 0.8); }

#btn-send {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 1), rgba(var(--accent-rgb), 0.75));
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), filter var(--t-mid) var(--ease);
}
#btn-send:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 16px 44px rgba(var(--accent-rgb), 0.20);
  filter: brightness(1.05);
}
#btn-send:active { transform: translateY(0); filter: brightness(0.98); }

#btn-stop {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(239, 68, 68, 0.9);
  color: #fff;
  cursor: pointer;
  display: none; /* JS ile kontrol edilir */
  align-items: center;
  justify-content: center;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), filter var(--t-mid) var(--ease);
}
#btn-stop:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 16px 44px rgba(239, 68, 68, 0.25);
  filter: brightness(1.05);
}
#btn-stop:active { transform: translateY(0); filter: brightness(0.98); }

#btn-scroll-bottom {
  position: absolute;
  bottom: 120px;
  right: 30px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--accent);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 90;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  backdrop-filter: blur(10px);
  transition: transform 0.2s, background 0.2s, color 0.2s;
}
#btn-scroll-bottom:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

/* Modals */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.78);
  backdrop-filter: blur(12px);
  display: none;
  place-items: center;
  z-index: 6000;
  padding: 14px;
}
.modal-content {
  background: #0c0c0e;
  padding: 26px;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  width: 92%;
  max-width: 420px;
  box-shadow: var(--shadow);
  animation: modalIn var(--t-slow) var(--ease) both;
  max-height: calc(100dvh - 28px);
  overflow: auto;
}

#profile-modal-avatar {
  transition: transform 0.3s var(--ease), border-color 0.3s;
  cursor: pointer;
}
#profile-modal-avatar:hover {
  transform: scale(1.1);
  border-color: var(--accent) !important;
}
#profile-modal-avatar-icon {
  transition: transform 0.3s var(--ease), color 0.3s;
  cursor: pointer;
}
#profile-modal-avatar-icon:hover {
  transform: scale(1.1);
  color: var(--accent) !important;
}

#image-viewer-modal img {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
}

.modal-header { display:flex; align-items:center; justify-content:space-between; margin-bottom: 14px; }
.modal-header h3 { font-size: 16px; }
.btn-close {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
  color: #fff;
  cursor: pointer;
  transition: transform var(--t-mid) var(--ease), background var(--t-mid) var(--ease);
}
.btn-close:hover { transform: translateY(-1px); background: rgba(255,255,255,0.06); }

.modal-content input,
.modal-content select,
.modal-content textarea.modal-text {
  width: 100%;
  padding: 12px;
  background: rgba(0,0,0,0.65);
  border: 1px solid rgba(255,255,255,0.10);
  color: #fff;
  border-radius: 14px;
  margin-bottom: 12px;
  outline: none;
  transition: border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}
.modal-content input:focus,
.modal-content select:focus,
.modal-content textarea.modal-text:focus {
  border-color: rgba(var(--accent-rgb), 0.35);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.12);
}

.btn-modal {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, rgba(var(--accent-rgb), 1), rgba(var(--accent-rgb), 0.75));
  color: #fff;
  border: none;
  border-radius: 14px;
  font-weight: 900;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease), filter var(--t-mid) var(--ease);
}
.btn-modal:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 55px rgba(var(--accent-rgb), 0.18);
  filter: brightness(1.05);
}
.btn-modal:active { transform: translateY(0); filter: brightness(0.98); }

.hint {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-sec);
  line-height: 1.5;
}

/* Code Block UI */
.content pre {
  position: relative;
  margin: 12px 0;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.10);
  overflow: hidden;
  box-shadow: 0 18px 60px rgba(0,0,0,0.35);
  background: rgba(10, 10, 18, 0.92);
}
.code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(90deg, rgba(15, 15, 25, 0.95), rgba(10, 10, 18, 0.92));
}
.code-lang {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  display: flex;
  align-items: center;
  gap: 8px;
}
.code-lang i {
  color: var(--accent);
  font-size: 14px;
}
.code-copy {
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.85);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 900;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 180ms var(--ease), background 180ms ease, border-color 180ms ease, filter 180ms ease;
}
.code-copy:hover {
  transform: translateY(-1px);
  background: rgba(var(--accent-rgb), 0.10);
  border-color: rgba(var(--accent-rgb), 0.25);
  filter: brightness(1.05);
}
.code-copy.copied {
  background: rgba(34,197,94,0.12);
  border-color: rgba(34,197,94,0.35);
}
.content pre code {
  display: block;
  padding: 14px;
  overflow: auto;
  font-size: 13px;
  line-height: 1.55;
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  flex: 1;
}
.content code:not(pre code) {
  padding: 2px 7px;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
}

/* Code Wrapper & Line Numbers */
.code-wrapper {
  display: flex;
  width: 100%;
  position: relative;
}
.line-numbers {
  flex-shrink: 0;
  padding: 14px 10px;
  text-align: right;
  color: rgba(255,255,255,0.3);
  font-size: 13px;
  line-height: 1.55;
  user-select: none;
  border-right: 1px solid rgba(255,255,255,0.05);
  background: rgba(0,0,0,0.15);
  font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
}
.line-numbers span {
  display: block;
}

/* Drawer overlay */
#drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.80);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-slow) var(--ease);
  z-index: 1500;
}

/* Mobile */
@media (max-width: 768px) {
  #topbar {
    display: flex;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    gap: 16px;
  }

  .topbar-brand { font-size: 18px; }

  .topbar-brand .logo-box.small {
    width: 24px;
    height: 24px;
    border-radius: 8px;
  }
  .topbar-brand .logo-box.small img {
    width: 14px !important;
    height: 14px !important;
  }

  #messages {
    padding: calc(70px + var(--safe-top)) 14px calc(140px + var(--safe-bottom));
  }

  .input-area {
    padding: 14px 14px calc(14px + var(--safe-bottom));
  }

  .input-glass {
    border-radius: 18px;
    padding: 10px 12px;
  }

  textarea#user-input {
    font-size: 16px;
    padding: 8px 8px;
  }

  #btn-send {
    width: 42px;
    height: 42px;
    border-radius: 14px;
  }

  #drawer-overlay {
    display: block;
    z-index: 4900;
  }

  body.drawer-open {
    overflow: hidden;
  }

  body.drawer-open #drawer-overlay {
    opacity: 1;
    pointer-events: auto;
    backdrop-filter: blur(12px);
  }

  #sidebar {
    position: fixed;
    top: 0;
    right: 0;
    left: auto;
    height: 100dvh;
    width: 100%;
    transform: translateX(110%);
    opacity: 0;
    box-shadow: var(--shadow);
    padding-top: calc(18px + var(--safe-top));
    z-index: 5000;
    will-change: transform, opacity;
    backface-visibility: hidden;
    border-right: none;
    border-left: 1px solid var(--border);
    transition: transform var(--t-slow) var(--ease), opacity var(--t-slow) var(--ease);
  }

  body.drawer-open #sidebar {
    transform: translateX(0);
    opacity: 1;
  }

  .content { padding: 12px; border-radius: 14px; }

  .content pre code {
    font-size: 12.5px;
    padding: 12px;
    max-width: 100%;
  }

  .code-toolbar { padding: 9px 10px; }

  .code-copy {
    padding: 7px 9px;
    border-radius: 12px;
    font-size: 11px;
  }

  #welcome-ui h1 { font-size: 44px; }
  #welcome-ui p { font-size: 14px; }

  #btn-close-sidebar {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }

  #btn-scroll-bottom {
    bottom: 90px;
    right: 16px;
  }

  /* Mobile Sidebar Improvements */
  .item-row {
    padding: 14px;
  }
  .item-row div {
    gap: 12px !important;
  }
  .item-row i {
    font-size: 16px !important;
    padding: 0.9 !important;
  }
  .folder-header {
    padding: 14px;
  }
  .folder-actions {
    opacity: 1 !important;
  }
}

@media (max-width: 380px) {
  #welcome-ui h1 { font-size: 38px; }
  .btn-icon { width: 38px; height: 38px; }
  #btn-send { width: 40px; height: 40px; }
}

/* Admin Only Visibility */
body:not(.admin-mode) .admin-only {
  display: none !important;
}

/* Theme Selector */
.theme-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid rgba(255,255,255,0.1);
  transition: transform 0.2s var(--ease), border-color 0.2s;
}
.theme-btn:hover { transform: scale(1.1); }
.theme-btn.active {
  border-color: #fff;
  transform: scale(1.15);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Theme Overrides */
body.theme-blue {
  --accent: #3b82f6;
  --accent-rgb: 59, 130, 246;
  --accent-glow: rgba(var(--accent-rgb), 0.4);
}
body.theme-purple {
  --accent: #a855f7;
  --accent-rgb: 168, 85, 247;
  --accent-glow: rgba(var(--accent-rgb), 0.4);
}
body.theme-orange {
  --accent: #f97316;
  --accent-rgb: 249, 115, 22;
  --accent-glow: rgba(var(--accent-rgb), 0.4);
}
body.theme-red {
  --accent: #ef4444;
  --accent-rgb: 239, 68, 68;
  --accent-glow: rgba(var(--accent-rgb), 0.4);
}
body.theme-yellow {
  --accent: #eab308;
  --accent-rgb: 234, 179, 8;
  --accent-glow: rgba(var(--accent-rgb), 0.4);
}

/* Auth Tabs */
.auth-tabs {
  display: flex;
  background: rgba(0,0,0,0.3);
  padding: 4px;
  border-radius: 12px;
  margin-bottom: 20px;
  border: 1px solid rgba(255,255,255,0.05);
}
.auth-tab {
  flex: 1;
  text-align: center;
  padding: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-radius: 8px;
  color: var(--text-sec);
  transition: all 0.2s;
}
.auth-tab.active {
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.auth-form { display: none; animation: slideUp 0.3s var(--ease); }
.auth-form.active { display: block; }

.auth-link {
  font-size: 12px;
  color: var(--text-sec);
  cursor: pointer;
  transition: color 0.2s;
}
.auth-link:hover { color: var(--accent); text-decoration: underline; }

.auth-options {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}
.auth-options input[type="checkbox"] {
  width: auto;
  margin: 0;
}
.auth-options label {
  font-size: 13px;
  color: var(--text-sec);
  cursor: pointer;
  user-select: none;
}

/* Auth Modal Animated Background */
#auth-modal {
  background: linear-gradient(-45deg, #050505, #1a103c, #082032, #000000);
  background-size: 400% 400%;
  animation: authGradient 15s ease infinite;
}
@keyframes authGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(var(--accent-rgb), 0.3);
  border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(var(--accent-rgb), 0.6);
}

/* Social Login */
.auth-divider {
  display: flex;
  align-items: center;
  margin: 16px 0;
  color: var(--text-sec);
  font-size: 12px;
}
.auth-divider::before, .auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,0.1);
}
.auth-divider span { padding: 0 10px; }

.social-login { display: flex; gap: 10px; }
.btn-social {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px; border-radius: 12px; border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.05); color: #fff; cursor: pointer;
  font-size: 13px; font-weight: 600; transition: all 0.2s;
}
.btn-social:hover { background: rgba(255,255,255,0.1); transform: translateY(-1px); }
.btn-social.google:hover { border-color: #ea4335; color: #ea4335; }
.btn-social.github:hover { border-color: #fff; }
.btn-social.discord:hover { border-color: #5865F2; color: #5865F2; }

/* Toast Notifications */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 8000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: rgba(18, 18, 24, 0.9);
  border: 1px solid var(--border);
  padding: 14px 18px;
  border-radius: 14px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  backdrop-filter: blur(16px);
  animation: toastIn 0.4s var(--ease) forwards;
  pointer-events: auto;
  min-width: 240px;
  transform-origin: top right;
}
.toast i { color: var(--accent); font-size: 18px; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px) scale(0.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(20px) scale(0.95); }
}

/* Plan Cards */
.plan-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}
.plan-card.highlight {
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.05);
}
.plan-card h4 { font-size: 18px; margin-bottom: 8px; }
.plan-price { font-size: 24px; font-weight: 900; color: #fff; margin-bottom: 12px; }
.plan-features { list-style: none; margin-bottom: 16px; font-size: 13px; color: var(--text-sec); }
.plan-features li { margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.plan-features li i { color: var(--accent); }

/* Admin Panel Styles */
.admin-section {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.user-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 13px;
}
.user-actions { display: flex; gap: 6px; }
.btn-mini {
  padding: 4px 8px;
  font-size: 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  color: var(--text-sec);
  cursor: pointer;
}
.btn-mini:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-mini.danger:hover { background: #ef4444; border-color: #ef4444; }

.crypto-address {
  font-family: monospace; background: rgba(0,0,0,0.3); padding: 8px; border-radius: 8px; word-break: break-all; font-size: 12px; user-select: all; cursor: pointer;
}

.admin-date-input {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  color: #fff;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  color-scheme: dark;
}

/* Admin Stats Dashboard */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 24px;
}
.stat-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
}
.stat-card.highlight {
  background: rgba(var(--accent-rgb), 0.1);
  border-color: rgba(var(--accent-rgb), 0.3);
}
.stat-value {
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 4px;
}
.stat-label {
  font-size: 10px;
  color: var(--text-sec);
  text-transform: uppercase;
  font-weight: 700;
}

/* Maintenance Overlay */
#maintenance-overlay {
  position: fixed;
  inset: 0;
  background: #09090b;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  padding: 20px;
}
.maintenance-content h2 {
  font-size: 28px;
  margin-bottom: 10px;
  color: #fff;
}
.maintenance-content p {
  color: var(--text-sec);
  margin-bottom: 24px;
  max-width: 400px;
  line-height: 1.6;
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: rgba(255,255,255,0.1);
  transition: .4s;
  border-radius: 34px;
}
.slider:before {
  position: absolute;
  content: "";
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(20px); }

/* Role Badges */
.role-badge {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: fit-content;
  align-self: center;
}
.role-badge.free { background: rgba(255,255,255,0.1); color: var(--text-sec); border: 1px solid rgba(255,255,255,0.1); }
.role-badge.plus { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); }
.role-badge.admin { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.3); }

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-sec);
  margin-bottom: 6px;
  padding: 6px 8px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
}
.stat-row span:last-child {
  font-weight: 700;
  color: var(--text);
}

/* Folders */
.folder-item {
  margin-bottom: 4px;
}
.folder-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 10px;
  font-size: 12px;
  color: var(--text-sec);
  background: rgba(255,255,255,0.02);
  border: 1px solid transparent;
  transition: all 0.2s;
}
.folder-header:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text);
}
.folder-actions { display: flex; gap: 8px; opacity: 0; transition: opacity 0.2s; }
.folder-header:hover .folder-actions { opacity: 1; }
.folder-content {
  padding-left: 10px;
  margin-top: 4px;
  border-left: 1px solid rgba(255,255,255,0.05);
}

.folder-header.drag-over, #root-drop-zone.drag-over {
  background: rgba(var(--accent-rgb), 0.15);
  border: 1px dashed var(--accent);
  color: var(--accent);
}

.item-row.dragging, .folder-header.dragging {
  opacity: 0.5;
  background: rgba(var(--accent-rgb), 0.1);
}