* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  /* Prevent the layout viewport from scrolling when the keyboard opens */
  position: fixed;
  width: 100%;
}

:root {
  /* Flutter AppColors.dark() */
  --bg:             #11171A;
  --bg-bottom:      #000000;
  --dock-bg:        rgba(33,48,48,0.82);
  --border:         rgba(255,255,255,0.11);
  --border-sheet:   rgba(255,255,255,0.20);
  --input-bg:       rgba(255,255,255,0.15);
  --input-border:   rgba(255,255,255,0.25);
  --text-primary:   rgba(255,255,255,0.80);
  --text-secondary: rgba(255,255,255,0.50);
  --accent-live:    #4CAF50;
  --accent-green:   #17B762;
  --accent-cyan:    #00BCFF;
  --user-bubble:    #103D3B;
  --asst-bubble:    rgba(25,66,77,0.60);
  --end-btn:        #FF4B4B;
  --error:          #FF4B4B;
  --btn-bg:         rgba(255,255,255,0.09);
  --header-menu-bg: rgba(255,255,255,0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(to bottom, var(--bg) 0%, var(--bg-bottom) 100%);
  color: var(--text-primary);
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ── Resume button (shown below status label on session end) ── */
#resume-btn {
  display: none;
  margin-top: 20px;
  padding: 12px 32px;
  font-size: 0.9rem;
}
#resume-btn.visible { display: block; }

/* ══════════════════════════════════════════════ SESSION SCREEN */
#session-screen {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 100dvh;
  flex-direction: column;
  background: #FFFFFF;
  overflow: hidden;
}

/* ── Floating end button ── */
.hdr-btn {
  position: fixed;
  top: max(16px, env(safe-area-inset-top, 16px));
  right: 16px;
  z-index: 30;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.18);
  color: white;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 0.2s;
}
.hdr-btn:hover { background: rgba(0,0,0,0.28); }
.hdr-btn svg   { width: 18px; height: 18px; }

.live-dot {
  position: fixed;
  top: max(24px, calc(env(safe-area-inset-top, 16px) + 8px));
  right: 60px;
  z-index: 30;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4CAF50;
  display: none;
  animation: blink 1.4s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ── Avatar ── */
#avatar-wrap {
  flex: 0 0 25%;
  min-height: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: #FFFFFF;
  overflow: hidden;
}

#avatar {
  height: 100%;
  width: auto;
  object-fit: contain;
  object-position: bottom center;
  transform: translateY(32px);
}

/* ── Chat dock (always visible) ── */
#dock {
  flex: 1 1 0%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: #F2F2F2;
  border-radius: 24px 24px 0 0;
  overflow: hidden;
  position: relative;
}

/* Status label — overlays top of chat */
#status-label {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 6;
  text-align: center;
  padding: 14px 16px 6px;
  pointer-events: none;
}
#status-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: #B70000;
  font-style: italic;
}

/* Chat scroll — fills entire dock; status-label and bottom-area overlay it */
#transcript-scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 72px 16px 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
  /* Fade edges: transparent at top (under status label) and bottom (under controls) */
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0px,
    black 56px,
    black calc(100% - 140px),
    transparent 100%
  );
  mask-image: linear-gradient(
    to bottom,
    transparent 0px,
    black 56px,
    black calc(100% - 140px),
    transparent 100%
  );
}
#transcript-scroll::-webkit-scrollbar       { width: 3px; }
#transcript-scroll::-webkit-scrollbar-track { background: transparent; }
#transcript-scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 2px; }

/* Chat bubbles */
@keyframes bubble-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.bubble {
  max-width: 82%;
  padding: 14px 16px;
  border-radius: 20px;
  font-size: 0.925rem;
  line-height: 1.5;
  animation: bubble-in 0.2s ease;
}
.bubble.user {
  align-self: flex-end;
  background: #3A3F4A;
  color: #FFFFFF;
  border-radius: 20px 20px 4px 20px;
}
.bubble.assistant {
  align-self: flex-start;
  background: #FFFFFF;
  color: #1A1A1A;
  border-radius: 20px 20px 20px 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.10);
}
.bubble.interim { opacity: 1; }

/* Menu link button inside assistant bubble */
.bubble-menu-btn {
  display: block;
  margin-top: 8px;
  padding: 0;
  background: none;
  border: none;
  color: #B70000;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.bubble-menu-btn:hover { opacity: 0.75; }

/* ── Bill bubble ── */
.bill-bubble {
  align-self: center;
  width: 90%;
  background: #FFFFFF;
  border-radius: 16px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: bubble-in 0.2s ease;
}

.bill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.bill-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1A1A1A;
}
.bill-view-items {
  background: none;
  border: none;
  font-size: 0.8rem;
  font-weight: 500;
  color: #2E7D32;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
  padding: 0;
}

.bill-items-list {
  display: none;
  flex-direction: column;
  gap: 12px;
}
.bill-items-list.open { display: flex; }
.bill-item-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.bill-item-img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
  background: #F0F0F0;
}
.bill-item-name {
  font-size: 0.8rem;
  color: #444;
  flex: 1;
}
.bill-item-price {
  font-size: 0.8rem;
  font-weight: 600;
  color: #1A1A1A;
  flex-shrink: 0;
}

.bill-divider {
  height: 1px;
  background: #EFEFEF;
}

.bill-breakdown {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.bill-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.bill-row-label {
  flex: 1;
  font-size: 0.82rem;
  color: #555;
}
.bill-row-sep {
  font-size: 0.82rem;
  color: #999;
}
.bill-row-value {
  font-size: 0.82rem;
  font-weight: 600;
  color: #1A1A1A;
  min-width: 56px;
  text-align: right;
}

.bill-pay-btn {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  background: #2E7D32;
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s;
}
.bill-pay-btn:active { opacity: 0.85; }

/* ── Bottom area — floats over chat ── */
#bottom-area {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: flex;
  flex-direction: column;
  z-index: 10;
}

/* Resume button — same position as controls row */
.btn-resume {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - 32px);
  margin: 12px 16px;
  margin-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  padding: 14px 40px;
  max-width: 340px;
  align-self: center;
  border-radius: 50px;
  border: none;
  background: #B70000;
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-resume:hover { opacity: 0.88; }

/* Controls row */
#controls-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  padding-left: max(16px, env(safe-area-inset-left, 16px));
  padding-right: max(20px, calc(env(safe-area-inset-right, 0px) + 20px));
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  background: transparent;
  transform: translateY(110%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), gap 0.25s ease;
}
#controls-row.slide-in {
  transform: translateY(0);
}
#controls-row.input-focused {
  gap: 0;
}
.ctrl-btn {
  transition: width 0.25s ease, opacity 0.25s ease, transform 0.25s ease;
  overflow: hidden;
  flex-shrink: 0;
  flex-grow: 0;
}
#controls-row.input-focused .ctrl-btn {
  width: 0 !important;
  opacity: 0;
  transform: scale(0.75);
  pointer-events: none;
}

/* Text input */
#text-input-wrap {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  background: #FFFFFF;
  border-radius: 50px;
  padding: 0 6px 0 18px;
  border: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  height: clamp(44px, 12vw, 56px);
  overflow: hidden;
}
#text-input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  color: #1A1A1A;
  font-size: clamp(0.82rem, 3.5vw, 0.95rem);
  height: 100%;
}
#text-input::placeholder { color: #AAAAAA; }

#send-btn {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  margin-right: 0;
  border-radius: 50%;
  background: #B70000;
  border: none;
  color: white;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: opacity 0.2s;
}
#send-btn:hover { opacity: 0.85; }
#send-btn svg   { width: 38%; height: 38%; }

/* Control buttons */
.ctrl-btn {
  width: clamp(40px, 13%, 56px);
  aspect-ratio: 1;
  flex-shrink: 0;
  flex-grow: 0;
  border-radius: 50%;
  border: none;
  background: #3A3F4A;
  color: #FFFFFF;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 0.2s, width 0.25s ease, opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
  overflow: hidden;
}
.ctrl-btn:hover   { background: #4A5060; }
.ctrl-btn:active  { background: #2A2F38; }
.ctrl-btn.active-btn { background: #B70000; }
.ctrl-btn svg { width: 42%; height: 42%; }

/* ── Banner ── */
#banner {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 25;
  background: rgba(204,16,16,0.92);
  padding: 10px 16px;
  font-size: 0.85rem;
  color: white;
  display: none;
  align-items: center;
  gap: 10px;
}
#banner.info { background: rgba(23,183,98,0.92); }
#banner-msg  { flex: 1; }
#banner-close { cursor: pointer; background: none; border: none; color: white; font-size: 1rem; opacity: 0.8; }

/* ══════════════════════════════════════════════ MENU BOTTOM SHEET */
#menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 50;
  opacity: 0;
  transition: opacity 0.3s ease;
}
#menu-overlay.visible {
  display: block;
  opacity: 1;
}

#menu-sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 51;
  background: #FFFFFF;
  border-radius: 20px 20px 0 0;
  height: 65dvh;
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
#menu-sheet.open {
  transform: translateY(0);
}

#menu-sheet-handle {
  width: 36px;
  height: 4px;
  background: #E0E0E0;
  border-radius: 2px;
  align-self: center;
  margin: 10px 0 0;
  flex-shrink: 0;
}

#menu-sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px 10px;
  flex-shrink: 0;
}
#menu-sheet-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1A1A1A;
}
#menu-sheet-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: #F2F2F2;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}
#menu-sheet-close svg { width: 16px; height: 16px; stroke: #444; }

/* Category chips */
#menu-categories {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  overflow-x: auto;
  flex-shrink: 0;
  scrollbar-width: none;
}
#menu-categories::-webkit-scrollbar { display: none; }

.menu-cat-chip {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 50px;
  border: 1.5px solid #E0E0E0;
  background: #FFFFFF;
  color: #555;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.menu-cat-chip.active {
  background: #1A1A1A;
  color: #FFFFFF;
  border-color: #1A1A1A;
}

/* Items list */
#menu-items {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.menu-item-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
}

.menu-item-info {
  flex: 1;
  min-width: 0;
}
.menu-item-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #1A1A1A;
  line-height: 1.35;
  margin-bottom: 4px;
}
.menu-item-price {
  font-size: 0.95rem;
  font-weight: 700;
  color: #2E7D32;
}
.menu-item-qty {
  font-size: 0.78rem;
  color: #888;
  margin-top: 2px;
}

.menu-item-img-wrap {
  position: relative;
  flex-shrink: 0;
  width: 88px;
  height: 88px;
  border-radius: 10px;
  overflow: hidden;
  background: #F5F5F5;
}
.menu-item-img-wrap.no-image {
  background: #EEEEEE;
}
.menu-item-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.menu-item-add {
  position: absolute;
  bottom: 6px;
  right: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  border: none;
  background: #2E7D32;
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s;
}
.menu-item-add.added { background: #1B5E20; }

/* Quantity stepper (replaces ADD button) */
.menu-item-stepper {
  position: absolute;
  bottom: 6px;
  right: 6px;
  display: flex;
  align-items: center;
  gap: 0;
  background: #2E7D32;
  border-radius: 6px;
  overflow: hidden;
}
.stepper-btn {
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.12s;
}
.stepper-btn:active { background: rgba(0,0,0,0.15); }
.stepper-count {
  min-width: 20px;
  text-align: center;
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 700;
}

/* Place Order CTA */
#menu-place-order {
  flex-shrink: 0;
  margin: 10px 16px max(14px, env(safe-area-inset-bottom, 14px));
  padding: 14px 20px;
  border-radius: 14px;
  background: #1A1A1A;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s;
}
#menu-place-order:active { opacity: 0.85; }
.po-units {
  font-size: 0.78rem;
  background: rgba(255,255,255,0.18);
  padding: 3px 9px;
  border-radius: 50px;
}
.po-label {
  font-size: 0.95rem;
  font-weight: 600;
  flex: 1;
  text-align: center;
}

.menu-item-divider {
  height: 1px;
  background: #F0F0F0;
  margin: 0 20px;
}

.menu-empty {
  text-align: center;
  color: #AAA;
  font-size: 0.9rem;
  padding: 40px 20px;
}

/* ── Summary overlay ── */
#summary-overlay {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 30;
  background: rgba(255,255,255,0.96);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  gap: 20px;
  text-align: center;
}
#summary-overlay h2 { font-size: 1.2rem; font-weight: 700; color: #B70000; }
#summary-text {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.7;
  max-width: 400px;
  max-height: 40vh;
  overflow-y: auto;
  text-align: left;
}

/* ── Dock disabled ── */
/* Dock disabled — fade controls but keep order-again active */
#dock.inactive #controls-row {
  display: none;
}
#dock.inactive #resume-btn {
  pointer-events: auto;
  opacity: 1;
}

/* ══════════════════════════════════════════════ LANDING SCREEN */
#landing-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  z-index: 100;
  transition: opacity 0.45s ease, transform 0.45s ease;
}
#landing-screen.hide {
  opacity: 0;
  transform: scale(0.97);
  pointer-events: none;
}

#landing-bg {
  position: absolute;
  inset: 0;
  background: #FFFFFF;
  z-index: 0;
}

/* ── Top section ── */
#landing-top {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: max(48px, env(safe-area-inset-top, 48px));
  text-align: center;
  padding-left: 24px;
  padding-right: 24px;
}

#brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}
#brand-logo-img {
  height: 80px;
  width: auto;
  object-fit: contain;
}

#landing-headline {
  font-size: clamp(1.45rem, 5vw, 1.9rem);
  font-weight: 700;
  color: #1A1A1A;
  line-height: 1.3;
  max-width: 360px;
}

#landing-sub {
  font-size: 0.88rem;
  color: #888888;
  letter-spacing: 0.04em;
}

/* ── Avatar ── */
#landing-avatar-wrap {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

#landing-avatar {
  width: 100%;
  max-width: 420px;
  height: 100%;
  max-height: 100%;
  display: block;
  object-fit: contain;
  object-position: bottom center;
}

/* Subtle pink fade at very bottom of avatar */
#landing-avatar-wrap::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 25%;
  background: linear-gradient(to top, rgba(255,220,220,0.5) 0%, transparent 100%);
  pointer-events: none;
  z-index: 3;
}

/* ── Bottom CTA — floats over avatar via absolute positioning ── */
#landing-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 0 24px calc(max(32px, env(safe-area-inset-bottom, 32px)) + 8px);
}

@keyframes btn-breathe {
  0%, 100% { transform: scale(1);    }
  50%       { transform: scale(1.04); }
}

@keyframes btn-arrow-bounce {
  0%, 100% { transform: translateX(0); }
  50%       { transform: translateX(5px); }
}

#start-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 340px;
  padding: 18px 24px 18px 32px;
  border-radius: 50px;
  border: none;
  background: #1A1A1A;
  color: white;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: filter 0.15s;
  animation: btn-breathe 1.6s ease-in-out infinite;
}
#start-btn:hover  { filter: brightness(1.08); animation: none; }
#start-btn:active { transform: scale(0.97); animation: none; }
#start-btn:active { transform: scale(0.97); }
#start-btn span   { flex: 1; text-align: center; }
#start-btn svg    {
  width: 22px; height: 22px; flex-shrink: 0; opacity: 0.85;
  animation: btn-arrow-bounce 1.8s ease-in-out infinite;
}

#landing-hint {
  font-size: 0.78rem;
  color: rgba(0,0,0,0.80);
  text-align: center;
}

/* ══════════════════════════════════════════════ LANDSCAPE LANDING */
@media (orientation: landscape) and (max-height: 600px) {
  /* Extend the bottom gradient across the full width in landscape */
  #landing-avatar-wrap::after {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: 30%;
  }


  /* Two-column layout: left = brand + text, right = avatar + CTA */
  #landing-screen {
    flex-direction: row;
    align-items: stretch;
  }

  /* Left column */
  #landing-top {
    flex: 1 1 0%;
    padding-top: max(24px, env(safe-area-inset-top, 24px));
    padding-bottom: 24px;
    padding-left: max(32px, env(safe-area-inset-left, 32px));
    padding-right: 24px;
    align-items: flex-start;
    justify-content: center;
    text-align: left;
    gap: 10px;
  }

  #brand-logo-img {
    height: 52px;
  }

  #landing-headline {
    font-size: clamp(1.1rem, 3.5vw, 1.5rem);
    max-width: none;
  }

  /* Right column */
  #landing-avatar-wrap {
    flex: 1 1 0%;
    align-items: flex-end;
    justify-content: center;
    overflow: visible;
  }

  #landing-avatar {
    width: auto;
    max-width: 100%;
    height: 100%;
    max-height: 100%;
    object-position: bottom center;
  }

  /* Bottom CTA: attach to right column instead of full-width overlay */
  #landing-bottom {
    position: absolute;
    left: 50%;
    right: 0;
    bottom: 0;
    padding: 0 max(24px, env(safe-area-inset-right, 24px)) max(16px, env(safe-area-inset-bottom, 16px));
    gap: 8px;
  }

  #start-btn {
    max-width: 280px;
    padding: 14px 20px 14px 26px;
    font-size: 0.95rem;
  }

  #landing-hint {
    font-size: 0.72rem;
  }
}

/* ── Primary button ── */
.btn-primary {
  background: linear-gradient(135deg, #7c5cfc 0%, #5b8dee 100%);
  color: white;
  border: none;
  border-radius: 50px;
  padding: 16px 48px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  letter-spacing: 0.02em;
}
.btn-primary:hover  { opacity: 0.9; transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }