/* Sleek Interface - Neumorphism (Soft UI) Real-Time Password Strength Checker */

:root {
  --bg-color: #e0e5ec;
  --text-heading: #2d3436;
  --text-main: #44475a;
  --text-muted: #8892a0;
  --shadow-light: #ffffff;
  --shadow-dark: #a3b1c6;
  --shadow-inset: #b8b9be;
  --color-weak: #ff7675;
  --color-medium: #fdcb6e;
  --color-strong: #55efc4;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

/* Centered Highlighted Square Container - Sleek Interface Card */
.app-container {
  background-color: var(--bg-color);
  width: 450px;
  max-width: 100%;
  border-radius: 40px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  box-shadow: 12px 12px 24px var(--shadow-dark), -12px -12px 24px var(--shadow-light);
  transition: all 0.3s ease;
}

/* Header & Title */
.header-area {
  text-align: center;
  margin-bottom: 28px;
}

.app-title {
  font-size: 26px;
  font-weight: 900;
  color: var(--text-heading);
  letter-spacing: -0.03em;
}

.app-subtitle {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-main);
  opacity: 0.5;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 6px;
}

/* Form Styles */
.form-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.form-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding-left: 16px;
  opacity: 0.7;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Pressed-in Neumorphic Input - Sleek Interface */
.neumorphic-input {
  width: 100%;
  height: 48px;
  background-color: var(--bg-color);
  border: none;
  outline: none;
  border-radius: 16px;
  padding: 0 20px;
  font-size: 14px;
  color: var(--text-heading);
  box-shadow: inset 6px 6px 12px var(--shadow-inset), inset -6px -6px 12px var(--shadow-light);
  transition: all 0.2s ease-in-out;
}

.neumorphic-input::placeholder {
  color: #a0a6b5;
  font-size: 13px;
}

.neumorphic-input:focus {
  box-shadow: inset 7px 7px 14px var(--shadow-inset), inset -7px -7px 14px var(--shadow-light);
}

/* Error state & Shake animation */
.neumorphic-input.input-error {
  box-shadow: inset 5px 5px 10px #d8a8a8, inset -5px -5px 10px #ffffff, 0 0 0 1.5px var(--color-weak);
}

.shake-error {
  animation: neuShake 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes neuShake {
  0%, 100% {
    transform: translateX(0);
  }
  15%, 45%, 75% {
    transform: translateX(-6px);
  }
  30%, 60%, 90% {
    transform: translateX(6px);
  }
}

/* Field validation hints */
.field-hint {
  font-size: 10px;
  min-height: 14px;
  padding-left: 16px;
  color: var(--text-muted);
  font-style: italic;
  transition: color 0.2s ease;
}

.field-hint.error {
  color: var(--color-weak);
}

.field-hint.success {
  color: var(--color-strong);
}

/* Strength Meter */
.strength-meter-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
  padding: 0 4px;
}

.strength-meter-track {
  width: 100%;
  height: 10px;
  background-color: var(--bg-color);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: inset 2px 2px 5px var(--shadow-inset), inset -2px -2px 5px var(--shadow-light);
}

.strength-meter-bar {
  height: 100%;
  width: 0%;
  border-radius: 6px;
  transition: width 0.3s ease, background-color 0.3s ease;
}

.strength-meter-bar.weak {
  width: 33.33%;
  background-color: var(--color-weak);
}

.strength-meter-bar.medium {
  width: 66.66%;
  background-color: var(--color-medium);
}

.strength-meter-bar.strong {
  width: 100%;
  background-color: var(--color-strong);
}

.strength-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  padding: 0 2px;
}

.strength-label {
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.strength-label.weak {
  color: var(--color-weak);
}

.strength-label.medium {
  color: var(--color-medium);
}

.strength-label.strong {
  color: var(--color-strong);
}

.strength-reqs {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.5;
  color: var(--text-main);
}

/* Extruded Neumorphic Button - Sleek Interface */
.btn-registry {
  display: none;
  width: 100%;
  height: 50px;
  margin-top: 8px;
  background-color: var(--bg-color);
  border: none;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-heading);
  cursor: pointer;
  outline: none;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  transition: all 0.2s ease-in-out;
}

.btn-registry:hover {
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
  color: #1a1e20;
}

.btn-registry:active {
  box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
  transform: translateY(1px);
}

/* Success State */
.success-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  padding: 24px 10px;
  gap: 20px;
}

.checkmark-circle-outer {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background-color: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #ffffff;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
}

.checkmark-svg {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: block;
}

.checkmark-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  stroke-width: 3;
  stroke-miterlimit: 10;
  stroke: var(--color-strong);
  fill: none;
}

.checkmark-check {
  transform-origin: 50% 50%;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  stroke-width: 4;
  stroke: var(--color-strong);
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

/* Animated Checkmark popup */
.animate-popup .checkmark-circle-outer {
  animation: popScale 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.animate-popup .checkmark-circle {
  animation: strokeCircle 0.6s cubic-bezier(0.65, 0, 0.45, 1) 0.2s forwards;
}

.animate-popup .checkmark-check {
  animation: strokeCheck 0.4s cubic-bezier(0.65, 0, 0.45, 1) 0.6s forwards;
}

.animate-popup .success-text {
  animation: fadeInUp 0.5s ease-out 0.8s both;
}

/* Static checkmark (when animation has already played once in session) */
.static-display .checkmark-circle {
  stroke-dashoffset: 0;
}

.static-display .checkmark-check {
  stroke-dashoffset: 0;
}

.static-display .success-text {
  opacity: 1;
  transform: none;
}

@keyframes popScale {
  0% {
    transform: scale(0.4);
    opacity: 0;
  }
  70% {
    transform: scale(1.08);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes strokeCircle {
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes strokeCheck {
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.success-text {
  font-size: 20px;
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.4;
  max-width: 300px;
}

.reset-session-btn {
  margin-top: 10px;
  padding: 10px 22px;
  background-color: var(--bg-color);
  border: none;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-heading);
  cursor: pointer;
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
  transition: all 0.2s ease-in-out;
}

.reset-session-btn:hover {
  color: #1a1e20;
  box-shadow: 4px 4px 8px var(--shadow-dark), -4px -4px 8px var(--shadow-light);
}

.reset-session-btn:active {
  box-shadow: inset 3px 3px 6px var(--shadow-dark), inset -3px -3px 6px var(--shadow-light);
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .app-container {
    padding: 28px 20px;
    border-radius: 28px;
  }
}