/* ═══════════════════════════════════════════════════════════
   chat.css — Chat Messages, Bubbles, Input Area
   ═══════════════════════════════════════════════════════════ */

/* ── Messages Container ── */
.messages-container {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: auto !important;
  padding: var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  align-items: center; /* Center the message blocks */
}

/* Welcome screen when no messages */
.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-6);
  padding: var(--space-8);
}

.welcome-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  box-shadow: var(--shadow-glow);
  animation: float 3s ease-in-out infinite;
}

.welcome-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.welcome-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 500px;
  line-height: 1.8;
}

.welcome-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  max-width: 600px;
}

.suggestion-chip {
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.suggestion-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-subtle);
}

/* ── Message Bubble ── */
.message {
  display: flex;
  gap: var(--space-4);
  width: 100%;
  max-width: 850px; /* Centered, neat readable column like Perplexity */
  animation: fadeSlideUp var(--transition-base) ease;
  box-sizing: border-box;
  min-width: 0; /* Prevents overflow-stretching inside flex parent */
}

/* Align messages to the same side (right side in RTL, left side in LTR) */
.message.user {
  flex-direction: row;
}

.message.assistant {
  flex-direction: row;
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.message.user .message-avatar {
  background: linear-gradient(135deg, #374151, #1F2937);
  color: #D1D5DB;
}

.message.assistant .message-avatar {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
}

.message-body {
  flex: 1;
  min-width: 0; /* Allows horizontal shrinking */
  max-width: 100%;
}

.message-content {
  font-size: var(--text-sm);
  line-height: 1.8;
  position: relative;
  width: 100%;
  min-width: 0;
}

/* User Message specific style: clean bubble */
.message.user .message-body {
  display: flex;
  justify-content: flex-start; /* aligns it next to avatar on the right */
}

.message.user .message-content {
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-sm);
  width: fit-content;
  max-width: 100%;
  box-sizing: border-box;
  color: var(--color-text-primary);
}

/* Assistant Message specific style: transparent flow */
.message.assistant .message-content {
  background: transparent;
  border: none;
  padding: 0;
  width: 100%;
}

.message.assistant.error .message-content {
  color: var(--color-error);
}

/* ── Typing Cursor ── */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--color-primary);
  margin-right: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s step-end infinite;
}

/* ── Typing Dots Indicator ── */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--space-4);
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: typingBounce 1.4s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

/* ── Collapsible Sections (SQL Query + Data Table) ── */
.collapsible {
  margin-top: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  width: 100%;
}

.collapsible-header {
  padding: var(--space-2) var(--space-3);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  user-select: none;
}
.collapsible-header:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-secondary);
}

.collapsible-header .arrow {
  transition: transform var(--transition-fast);
  font-size: 10px;
}
.collapsible.open .collapsible-header .arrow {
  transform: rotate(90deg);
}

.collapsible-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.collapsible.open .collapsible-body {
  max-height: 500px;
  overflow-y: auto;
  overflow-x: auto;
}

.sql-display {
  padding: var(--space-3) var(--space-4);
  background: rgba(0, 0, 0, 0.3);
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: var(--text-xs);
  color: #E5E7EB;
  direction: ltr;
  text-align: left;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

/* ── Action Buttons (Multi-Agent Mode) ── */
.action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  direction: rtl;
}

.agent-steps-body .action-buttons {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-5) 0 var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 3;
}

.action-btn {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast) cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
}

.action-btn i {
  font-size: 11px;
}

.action-btn.execute {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}
.action-btn.execute:hover {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(220, 38, 38, 0.4);
}

.action-btn.explain {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.action-btn.explain:hover {
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.4);
  color: #38bdf8;
  transform: translateY(-1px);
}

.action-btn.edit {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.action-btn.edit:hover {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.4);
  color: #fbbf24;
  transform: translateY(-1px);
}

.action-btn.cancel {
  background: transparent;
  color: var(--color-text-muted);
  box-shadow: none;
}
.action-btn.cancel:hover {
  background: rgba(239, 68, 68, 0.08);
  color: #f87171;
}

/* Feedback Input for Regeneration */
.feedback-input-container {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
  animation: fadeSlideUp var(--transition-fast) ease;
}

.feedback-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: var(--text-xs);
}
.feedback-input:focus {
  border-color: var(--color-primary);
  outline: none;
}

/* ── Message Toolbar ── */
.msg-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  opacity: 0;
  animation: toolbarFadeIn 0.3s ease forwards;
  animation-delay: 0.1s;
  flex-wrap: wrap;
}

.msg-toolbar.user-toolbar {
  margin-top: var(--space-2);
  padding-top: var(--space-1);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  justify-content: flex-end;
}

@keyframes toolbarFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-toolbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 13px;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  background: transparent;
  border: none;
  padding: 0;
}

.msg-toolbar-btn:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.msg-toolbar-btn.copy-done {
  color: var(--color-success);
}

.msg-toolbar-btn.liked {
  color: var(--color-success);
  animation: likePopIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.msg-toolbar-btn.disliked {
  color: var(--color-error);
  animation: likePopIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes likePopIn {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.4); }
  60%  { transform: scale(0.9); }
  100% { transform: scale(1); }
}

.msg-toolbar-divider {
  width: 1px;
  height: 16px;
  background: var(--color-border);
  margin: 0 var(--space-1);
  opacity: 0.5;
}

.msg-toolbar-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  white-space: nowrap;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg-toolbar-badge i {
  font-size: 9px;
  opacity: 0.7;
}

.msg-toolbar-badge.mode-badge i {
  color: var(--color-primary);
}

/* Responsive: hide text on small screens */
@media (max-width: 640px) {
  .msg-toolbar-badge .badge-text {
    display: none;
  }
  .msg-toolbar-badge {
    padding: 2px 5px;
  }
}

/* ── Chat Input Area ── */
.chat-input-area {
  padding: var(--space-4) var(--space-8);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--color-border);
}

.chat-input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  max-width: 900px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  transition: border-color var(--transition-fast);
}
.chat-input-wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--text-base);
  resize: none;
  min-height: 24px;
  max-height: 150px;
  line-height: 1.5;
  padding: var(--space-1) var(--space-2);
}
.chat-input:focus {
  outline: none;
}
.chat-input::placeholder {
  color: var(--color-text-muted);
}

.chat-input-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-think-toggle {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-think-toggle:hover {
  color: var(--color-primary);
}
.btn-think-toggle.active {
  color: var(--color-primary);
  background: rgba(220, 38, 38, 0.1);
  box-shadow: 0 0 8px rgba(220, 38, 38, 0.15);
}

.btn-mic {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-mic:hover {
  color: var(--color-primary);
}
.btn-mic.stop-active {
  color: var(--color-error) !important;
  background: rgba(239, 68, 68, 0.1) !important;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.25) !important;
  animation: stopPulse 1.5s infinite ease-in-out;
}
@keyframes stopPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}
.btn-mic.recording-active {
  color: #22c55e !important;
  background: rgba(34, 197, 94, 0.12) !important;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15), 0 0 12px rgba(34, 197, 94, 0.3) !important;
  animation: recordPulse 1.2s infinite ease-in-out;
}
@keyframes recordPulse {
  0% { box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15), 0 0 12px rgba(34, 197, 94, 0.3); transform: scale(1); }
  50% { box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.08), 0 0 20px rgba(34, 197, 94, 0.4); transform: scale(1.08); }
  100% { box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15), 0 0 12px rgba(34, 197, 94, 0.3); transform: scale(1); }
}
.btn-mic.transcribing {
  color: var(--color-primary) !important;
  cursor: wait;
}

.thinking-display {
  background: rgba(220, 38, 38, 0.02);
  border: 1px solid rgba(220, 38, 38, 0.08);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: 13px;
  color: #A3A3A3;
  margin: var(--space-2) 0;
  line-height: 1.6;
  word-break: break-word;
  overflow-wrap: break-word;
}
.thinking-display p {
  margin-bottom: 8px;
}
.thinking-display p:last-child {
  margin-bottom: 0;
}
.thinking-display ul, .thinking-display ol {
  margin-right: 20px;
  margin-bottom: 8px;
}
.thinking-display li {
  list-style-type: disc;
  margin-bottom: 4px;
}
.thinking-display code {
  white-space: pre-wrap !important;
  word-break: break-all !important;
  font-family: monospace;
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 12px;
}
.thinking-display pre {
  white-space: pre-wrap !important;
  word-break: break-all !important;
  background: rgba(0, 0, 0, 0.15) !important;
  padding: var(--space-2) var(--space-3) !important;
  border-radius: var(--radius-sm) !important;
  margin: var(--space-2) 0 !important;
  overflow-x: auto;
}
.thinking-display pre code {
  background: transparent !important;
  padding: 0 !important;
  border-radius: 0 !important;
  font-size: 12px !important;
}

.btn-send {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.btn-send:hover {
  background: var(--color-primary-light);
  box-shadow: var(--shadow-glow);
  transform: scale(1.05);
}
.btn-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ── Perplexity-Style Agent Steps Dropdown ── */
.agent-steps-container {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  margin-top: var(--space-2);
  margin-bottom: var(--space-5);
  overflow: hidden;
  transition: all var(--transition-base);
  width: 100%;
  box-sizing: border-box;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  min-width: 0;
}

.agent-steps-container.hidden {
  display: none !important;
}

.agent-steps-header {
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.025);
  user-select: none;
  transition: background-color var(--transition-fast);
}

.agent-steps-header:hover {
  background: rgba(255, 255, 255, 0.04);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.steps-icon {
  color: var(--color-primary);
  font-size: 14px;
}

.steps-title {
  letter-spacing: 0.01em;
}

.steps-arrow {
  font-size: 9px;
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.agent-steps-container.open .steps-arrow {
  transform: rotate(180deg);
}

.agent-steps-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  background: rgba(0, 0, 0, 0.1);
  padding: 0;
  position: relative;
  min-width: 0;
}

.agent-steps-container.open .agent-steps-body {
  max-height: 1000px;
  padding: var(--space-4) 0;
  overflow-y: auto;
}

/* Vertical Timeline Connector Line */
.agent-steps-body::before {
  content: '';
  position: absolute;
  right: 28px; /* matches center of right-aligned step icons in RTL */
  top: var(--space-5);
  bottom: var(--space-5);
  width: 1.5px;
  background: rgba(255, 255, 255, 0.05);
  z-index: 1;
}

/* Step Item styling */
.step-item {
  padding: var(--space-3) var(--space-5) var(--space-3) var(--space-5);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: 13px;
  color: var(--color-text-secondary);
  z-index: 2; /* above the vertical timeline line */
  min-width: 0;
}

.step-title-line {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-weight: var(--font-weight-medium);
}

.step-title-line i {
  font-size: 12px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-bg-chat); /* matches chat background to mask the vertical line */
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 3;
}

.step-item.loading .step-title-line i {
  color: var(--color-primary);
  border-color: rgba(220, 38, 38, 0.3);
  box-shadow: 0 0 8px rgba(220, 38, 38, 0.15);
}

.step-item.success .step-title-line i {
  color: var(--color-primary);
  border-color: rgba(220, 38, 38, 0.3);
  box-shadow: 0 0 8px rgba(220, 38, 38, 0.15);
}

.step-item.error .step-title-line i {
  color: var(--color-error);
  border-color: rgba(239, 68, 68, 0.3);
}

.step-content {
  padding-right: 32px; /* aligns details directly under the step text offset */
  width: 100%;
  box-sizing: border-box;
  min-width: 0;
}

.step-content .sql-display {
  margin-top: var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.4);
}

.step-content .data-table-wrapper {
  margin-top: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* ── Agent Progress Bar ── */
.agent-progress-wrapper {
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.015);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: all var(--transition-base);
}

.agent-progress-wrapper.hidden {
  display: none !important;
}

.agent-progress-header-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.agent-progress-text {
  font-weight: var(--font-weight-medium);
}

.agent-progress-pct {
  font-family: monospace;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary, #DC2626); /* brand red color */
}

.agent-progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.agent-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--color-primary-light, #EF4444) 0%, var(--color-primary, #DC2626) 100%);
  box-shadow: 0 0 10px var(--color-primary-glow, rgba(220, 38, 38, 0.3));
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.agent-progress-fill::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 200% 100%;
  animation: progress-glow 1.5s infinite linear;
}

@keyframes progress-glow {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Floating Scroll to Bottom Button ── */
.btn-scroll-bottom {
  position: absolute;
  bottom: 82px;
  right: 50%;
  transform: translateX(50%) translateY(16px);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-bg-secondary, #1e293b);
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.12));
  color: var(--color-text-secondary, #94a3b8);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), background 0.2s ease, color 0.2s ease;
}

.btn-scroll-bottom:hover {
  background: var(--color-primary, #dc2626);
  color: #ffffff;
  border-color: var(--color-primary, #dc2626);
  transform: translateX(50%) translateY(0) scale(1.08);
  box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.btn-scroll-bottom.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(50%) translateY(0);
}