/* =========================================================
   Singhvi Jewels PWA — iOS 26 Liquid Glass Theme
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Display:wght@300;400;500;600;700&display=swap');

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

/* ── CSS Variables ── */
:root {
  --glass-bg:          rgba(255, 255, 255, 0.55);
  --glass-bg-dark:     rgba(255, 255, 255, 0.35);
  --glass-border:      rgba(255, 255, 255, 0.7);
  --glass-shadow:      0 8px 32px rgba(0, 0, 0, 0.12);
  --glass-blur:        saturate(180%) blur(20px);
  --accent:            #007AFF;
  --accent-light:      rgba(0, 122, 255, 0.15);
  --accent-glow:       rgba(0, 122, 255, 0.3);
  --text-primary:      rgba(0, 0, 0, 0.88);
  --text-secondary:    rgba(0, 0, 0, 0.5);
  --text-tertiary:     rgba(0, 0, 0, 0.32);
  --success:           #34C759;
  --error:             #FF3B30;
  --bg-gradient:       linear-gradient(145deg, #e8f4fd 0%, #dbeafe 25%, #ede9fe 50%, #fce7f3 75%, #e0f2fe 100%);
  --spring:            cubic-bezier(0.34, 1.56, 0.64, 1);
  --smooth:            cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Base ── */
html { height: 100%; }

body {
  min-height: 100vh;
  font-family: -apple-system, "SF Pro Display", "SF Pro Text", BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Animated background orbs */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
  animation: floatOrb 12s ease-in-out infinite;
}

body::before {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,122,255,0.3), transparent 70%);
  top: -100px; left: -100px;
}

body::after {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(175,82,222,0.25), transparent 70%);
  bottom: -80px; right: -80px;
  animation-delay: -6s;
  animation-duration: 15s;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-15px, 25px) scale(0.95); }
}

/* ── Screens ── */
.screen {
  display: none;
  min-height: 100vh;
  flex-direction: column;
  position: relative;
  z-index: 1;
}
.screen.active { display: flex; }

/* =========================================================
   LOGIN SCREEN
   ========================================================= */

#loginScreen {
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  min-height: 100vh;
}

.login-logo {
  width: 140px;
  height: auto;
  margin-bottom: 36px;
  filter: drop-shadow(0 4px 16px rgba(0,0,0,0.12));
  animation: logoEntrance 0.8s var(--spring) both;
}

@keyframes logoEntrance {
  from { opacity: 0; transform: translateY(-20px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  padding: 32px 28px;
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,0.8);
  animation: cardEntrance 0.8s var(--spring) 0.1s both;
}

@keyframes cardEntrance {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 4px;
}

.login-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  font-weight: 400;
}

/* =========================================================
   APP HEADER
   ========================================================= */

.app-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 rgba(255,255,255,0.5), 0 4px 16px rgba(0,0,0,0.06);
}

.app-header img {
  height: 32px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.1));
}

.logout-btn {
  position: absolute;
  right: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-light);
  border: none;
  border-radius: 20px;
  padding: 6px 14px;
  cursor: pointer;
  margin: 0;
  width: auto;
  transition: all 0.2s var(--smooth);
  -webkit-tap-highlight-color: transparent;
}

.logout-btn:active {
  transform: scale(0.95);
  background: rgba(0,122,255,0.25);
}

/* =========================================================
   PAGE WRAPPER
   ========================================================= */

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.page-content {
  padding: 20px 16px 40px;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}

/* =========================================================
   MENU ITEMS
   ========================================================= */

.menu-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 20px;
  cursor: pointer;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,0.8);
  margin-bottom: 12px;
  text-decoration: none;
  transition: transform 0.25s var(--spring), box-shadow 0.25s var(--smooth);
  -webkit-tap-highlight-color: transparent;
  animation: menuItemIn 0.5s var(--spring) both;
  position: relative;
  overflow: hidden;
}

/* Staggered entrance */
.menu-item:nth-child(1) { animation-delay: 0.05s; }
.menu-item:nth-child(2) { animation-delay: 0.10s; }
.menu-item:nth-child(3) { animation-delay: 0.15s; }
.menu-item:nth-child(4) { animation-delay: 0.20s; }
.menu-item:nth-child(5) { animation-delay: 0.25s; }

@keyframes menuItemIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Shimmer effect on menu items */
.menu-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.4) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.menu-item:hover::before { transform: translateX(100%); }

.menu-item:active {
  transform: scale(0.97);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.6);
}

.menu-item span {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.menu-emoji {
  font-size: 26px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass-bg-dark);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.menu-chevron {
  margin-left: auto;
  color: var(--text-tertiary);
  font-size: 18px;
  font-weight: 300;
}

/* =========================================================
   BACK BUTTON
   ========================================================= */

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  background: none;
  border: none;
  padding: 0;
  margin: 8px 0 20px;
  cursor: pointer;
  width: auto;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s;
}

.back-btn:active { opacity: 0.6; }
.back-arrow { font-size: 22px; line-height: 1; margin-top: -1px; }

/* =========================================================
   LOOKUP CARD
   ========================================================= */

.lookup-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,0.8);
  animation: cardEntrance 0.5s var(--spring) 0.05s both;
}

.lookup-header {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.4px;
  margin-bottom: 4px;
}

.lookup-helper {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 4px;
}

/* =========================================================
   LABELS
   ========================================================= */

label {
  display: block;
  margin: 20px 0 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

/* =========================================================
   INPUTS & SELECTS
   ========================================================= */

input, select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 14px;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-primary);
  outline: none;
  transition: all 0.25s var(--smooth);
  -webkit-appearance: none;
  appearance: none;
  font-family: inherit;
}

input::placeholder { color: var(--text-tertiary); }

input:focus, select:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.8);
  box-shadow: 0 0 0 4px var(--accent-glow), 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-1px);
}

select {
  padding-right: 44px;
  background-image: url("data:image/svg+xml;utf8,<svg fill='%23007AFF' height='20' viewBox='0 0 24 24' width='20' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 20px;
  cursor: pointer;
}

/* =========================================================
   BUTTONS
   ========================================================= */

button {
  position: relative;
  margin-top: 20px;
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #007AFF, #0055D4);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  overflow: hidden;
  font-family: inherit;
  letter-spacing: -0.2px;
  box-shadow: 0 4px 16px rgba(0,122,255,0.35), inset 0 1px 0 rgba(255,255,255,0.2);
  transition: transform 0.2s var(--spring), box-shadow 0.2s var(--smooth), opacity 0.15s;
  -webkit-tap-highlight-color: transparent;
}

button::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, transparent 100%);
  border-radius: inherit;
  pointer-events: none;
}

button:active {
  transform: scale(0.97);
  box-shadow: 0 2px 8px rgba(0,122,255,0.25);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Ripple on tap */
button .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: scale(0);
  animation: ripple 0.5s linear;
  pointer-events: none;
}

@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}

/* =========================================================
   STATUS MESSAGES
   ========================================================= */

.error, .success {
  margin-top: 14px;
  font-size: 13px;
  padding: 12px 16px;
  border-radius: 12px;
  display: none;
  font-weight: 500;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: messageIn 0.3s var(--spring);
}

@keyframes messageIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.error {
  background: rgba(255,59,48,0.12);
  border: 1px solid rgba(255,59,48,0.2);
  color: #FF3B30;
}

.success {
  background: rgba(52,199,89,0.12);
  border: 1px solid rgba(52,199,89,0.2);
  color: #1a7f37;
}

/* =========================================================
   RESULT CARDS (SKU Lookup)
   ========================================================= */

.result-row-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 12px;
}

.result-card {
  position: relative;
  padding: 16px;
  margin-bottom: 12px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: var(--glass-shadow), inset 0 1px 0 rgba(255,255,255,0.8);
  cursor: pointer;
  transition: transform 0.2s var(--spring), box-shadow 0.2s var(--smooth);
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
  animation: cardEntrance 0.4s var(--spring) both;
}

.result-row-3 .result-card { padding: 12px; margin-bottom: 0; }

.result-card:active {
  transform: scale(0.96);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.result-label {
  font-size: 10px;
  letter-spacing: 0.7px;
  color: var(--text-tertiary);
  margin-bottom: 6px;
  text-transform: uppercase;
  font-weight: 600;
}

.result-value { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.result-row-3 .result-value { font-size: 13px; }

.copy-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #007AFF, #0055D4);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.2s var(--smooth);
  border-radius: inherit;
  letter-spacing: 0.2px;
}

.copy-overlay.show { opacity: 1; }

.result-not-found {
  text-align: center;
  padding: 30px 20px;
  color: var(--error);
  font-weight: 500;
  font-size: 15px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  box-shadow: var(--glass-shadow);
}

/* =========================================================
   LOADING SPINNER (on button while submitting)
   ========================================================= */

.btn-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =========================================================
   PAGE TRANSITION
   ========================================================= */

.page-content {
  animation: pageIn 0.4s var(--spring) both;
}

@keyframes pageIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   SCROLLBAR
   ========================================================= */

::-webkit-scrollbar { width: 0; }