@font-face {
  font-family: 'NisUni';
  src: url('font.php?file=Nis-uni.woff2') format('woff2'),
       url('font.php?file=Nis-uni.woff') format('woff'),
       url('font.php?file=Nis-uni.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  --font-family: 'NisUni', system-ui, -apple-system, sans-serif;
  
  /* Emerald Green Color System (Dark Theme) */
  --bg-color: #0b120f;
  --panel-bg: #111e19;
  --panel-border: #1f362f;
  
  --text-primary: #e2f1ec;
  --text-secondary: #8da49c;
  
  --primary: #10b981;
  --primary-hover: #34d399;
  --primary-glow: rgba(16, 185, 129, 0.15);
  
  --user-bg: #059669;
  --assistant-bg: #162a24;
  --assistant-border: #244339;
  
  --error-bg: #3d1c1c;
  --error-border: #6e3030;
  --error-text: #ff8888;
  
  --input-bg: #0b120f;
  --input-border: #1f362f;
  --input-focus: #10b981;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* Scrollbar Style */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--panel-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* --- Index.php (Chat Page) Styles --- */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 900px;
  margin: 0 auto;
  background: var(--panel-bg);
  border-left: 1px solid var(--panel-border);
  border-right: 1px solid var(--panel-border);
  box-shadow: var(--shadow-md);
}

#chat {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg {
  max-width: 80%;
  padding: 12px 18px;
  border-radius: 16px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 15px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.user {
  align-self: flex-end;
  background-color: var(--user-bg);
  color: #ffffff;
  border-bottom-right-radius: 4px;
}

.assistant {
  align-self: flex-start;
  background-color: var(--assistant-bg);
  border: 1px solid var(--assistant-border);
  border-bottom-left-radius: 4px;
}

.error {
  align-self: flex-start;
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  border-bottom-left-radius: 4px;
}

#form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 24px;
  background-color: var(--panel-bg);
  border-top: 1px solid var(--panel-border);
}
.form-row-top {
  display: flex;
  justify-content: flex-start;
}
.form-row-bottom {
  display: flex;
  gap: 12px;
  width: 100%;
}

textarea {
  flex: 1;
  padding: 12px 16px;
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  resize: none;
  line-height: 1.5;
  transition: var(--transition);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
}
textarea:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

button.btn {
  padding: 12px 24px;
  background-color: var(--primary);
  border: none;
  border-radius: 10px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-end;
  transition: var(--transition);
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.2);
}
button.btn:hover:not(:disabled) {
  background-color: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}
button.btn:active:not(:disabled) {
  transform: translateY(1px);
}
button.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

/* --- Log.php Styles --- */
.log-body {
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 24px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 16px;
}

h1.log-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.log-count {
  font-size: 14px;
  background: var(--panel-border);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
}

.logout-btn {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background-color: var(--panel-bg);
  transition: var(--transition);
}
.logout-btn:hover {
  background-color: #ff4a4a20;
  color: #ff6b6b;
  border-color: #ff4a4a40;
}

/* Search Form */
.search-form {
  display: flex;
  gap: 10px;
  margin-bottom: 24px;
}
.search-form input[type="text"] {
  flex: 1;
  padding: 12px 16px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}
.search-form input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.search-form button {
  padding: 12px 24px;
  background-color: var(--primary);
  border: none;
  border-radius: 10px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.search-form button:hover {
  background-color: var(--primary-hover);
}
.clear-btn {
  padding: 12px 18px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: var(--transition);
}
.clear-btn:hover {
  background-color: var(--panel-border);
  color: var(--text-primary);
}

/* Log Entries */
.entry {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  margin-bottom: 16px;
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.entry:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.05);
}

.meta {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  border-bottom: 1px dashed var(--panel-border);
  padding-bottom: 10px;
}
.meta span {
  white-space: nowrap;
}
.meta .id {
  color: var(--primary);
  font-weight: 600;
}
.meta .model {
  color: #34d399;
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

.label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 6px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}
.label.q-lbl::before { content: "●"; color: #3b82f6; }
.label.a-lbl::before { content: "●"; color: var(--primary); }

.bubble {
  background-color: var(--bg-color);
  border-radius: 8px;
  padding: 12px 16px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid var(--panel-border);
}
.bubble.q {
  margin-bottom: 16px;
}

/* Pager */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}
.pager a, .pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border-radius: 8px;
  font-size: 14px;
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}
.pager a {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
}
.pager a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background-color: rgba(16, 185, 129, 0.05);
}
.pager a.cur {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}
.pager span.pager-disabled {
  background-color: transparent;
  border: 1px solid var(--panel-border);
  color: #3f5d52;
  cursor: not-allowed;
}

.empty {
  color: var(--text-secondary);
  text-align: center;
  padding: 60px;
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
}

/* --- Password Protected Login Box --- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: var(--bg-color);
}
.login-box {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: fadeIn 0.4s ease-out;
}
.login-box h2 {
  font-size: 20px;
  margin-bottom: 20px;
  color: var(--text-primary);
  font-weight: 600;
}
.login-box input[type="password"] {
  width: 100%;
  padding: 12px;
  background-color: var(--bg-color);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: #ffffff;
  font-size: 18px;
  margin-bottom: 20px;
  text-align: center;
  outline: none;
  transition: var(--transition);
}
.login-box input[type="password"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.login-box button {
  width: 100%;
  padding: 12px;
  background-color: var(--primary);
  border: none;
  border-radius: 10px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.login-box button:hover {
  background-color: var(--primary-hover);
}
.login-box .error {
  align-self: unset;
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 14px;
  margin-bottom: 16px;
  text-align: center;
}

/* --- Admin Menu & Settings Styles --- */
.admin-menu {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
}
.menu-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 15px;
}
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.menu-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background-color: var(--bg-color);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition);
}
.menu-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.08);
}
.menu-card .icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.menu-card .title {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
}
.menu-card .desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Settings Form Styles */
.settings-container {
  background-color: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.settings-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.settings-form label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}
.settings-form textarea {
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
  background-color: var(--bg-color);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 16px;
  color: #34d399;
  line-height: 1.6;
}
.settings-form textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-actions {
  display: flex;
  justify-content: flex-end;
}
.save-btn {
  padding: 12px 24px;
  background-color: var(--primary);
  border: none;
  border-radius: 10px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.save-btn:hover {
  background-color: var(--primary-hover);
}

/* Alert Boxes */
.alert-box {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 500;
}
.alert-box.success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}
.alert-box.error {
  background-color: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

/* --- Chat Header Styles --- */
.chat-header {
  padding: 12px 24px;
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-header .brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.chat-header .brand::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
}

.model-select {
  font-family: inherit;
  padding: 6px 12px;
  background-color: var(--bg-color);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}
.model-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.model-select option {
  background-color: var(--panel-bg);
  color: var(--text-primary);
}