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

:root {
  --bg: #faf8f5;
  --card-bg: #ffffff;
  --text: #3a3a3a;
  --text-soft: #8a8a8a;
  --shadow: 0 2px 16px rgba(0, 0, 0, .06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, .10);
  --radius: 18px;
  --gap: 16px;

  /* Category palette */
  --cat-pink: #FFB5C2;
  --cat-pink-l: #FFF0F3;
  --dog-blue: #B5D8FF;
  --dog-blue-l: #F0F6FF;
  --tur-green: #B5E8CF;
  --tur-green-l: #F0FFF6;
  --all-purple: #D4B5FF;
  --all-purple-l: #F7F0FF;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Quicksand', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== Floating Decorations ===== */
.decorations {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.deco-item {
  position: absolute;
  font-size: 20px;
  opacity: 0;
  animation: floatUp linear infinite;
  will-change: transform, opacity;
}

@keyframes floatUp {
  0% {
    transform: translateY(100vh) rotate(0deg) scale(.6);
    opacity: 0;
  }

  10% {
    opacity: .35;
  }

  90% {
    opacity: .35;
  }

  100% {
    transform: translateY(-10vh) rotate(360deg) scale(1);
    opacity: 0;
  }
}

/* ===== Header ===== */
.header {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 20px 30px;
}

.title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: .02em;
}

.paw {
  display: inline-block;
}

.paw.bounce {
  animation: pawBounce 2s ease-in-out infinite;
}

@keyframes pawBounce {

  0%,
  100% {
    transform: translateY(0) rotate(0);
  }

  25% {
    transform: translateY(-8px) rotate(-10deg);
  }

  50% {
    transform: translateY(0) rotate(0);
  }

  75% {
    transform: translateY(-4px) rotate(5deg);
  }
}

.subtitle {
  margin-top: 8px;
  font-size: 1.05rem;
  color: var(--text-soft);
  font-weight: 500;
}

/* ===== Category Tabs ===== */
.categories {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 10px 20px 30px;
  flex-wrap: wrap;
}

.tab {
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  padding: 10px 22px;
  border: 2px solid transparent;
  border-radius: 50px;
  cursor: pointer;
  transition: all .3s ease;
  background: var(--card-bg);
  color: var(--text);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.tab .tab-icon {
  display: inline-block;
  transition: transform .3s ease;
}

.tab:hover .tab-icon {
  transform: scale(1.25) rotate(-8deg);
}

.tab:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.tab[data-category="all"].active {
  background: var(--all-purple-l);
  border-color: var(--all-purple);
  color: #7c5cbf;
}

.tab[data-category="cats"].active {
  background: var(--cat-pink-l);
  border-color: var(--cat-pink);
  color: #c76b7e;
}

.tab[data-category="dogs"].active {
  background: var(--dog-blue-l);
  border-color: var(--dog-blue);
  color: #5b8fbf;
}

.tab[data-category="turtles"].active {
  background: var(--tur-green-l);
  border-color: var(--tur-green);
  color: #5ba87a;
}

/* ===== Category Section Headers ===== */
.section-header {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto 16px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeSlideIn .5s ease both;
}

.section-header .emoji {
  font-size: 1.6rem;
  display: inline-block;
  animation: wiggle 2s ease-in-out infinite;
}

@keyframes wiggle {

  0%,
  100% {
    transform: rotate(0);
  }

  25% {
    transform: rotate(-6deg);
  }

  75% {
    transform: rotate(6deg);
  }
}

.section-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.section-header .line {
  flex: 1;
  height: 2px;
  border-radius: 1px;
  opacity: .3;
}

.section-header.cats .line {
  background: var(--cat-pink);
}

.section-header.dogs .line {
  background: var(--dog-blue);
}

.section-header.turtles .line {
  background: var(--tur-green);
}

/* ===== Masonry Grid ===== */
.masonry {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
  column-count: 3;
  column-gap: var(--gap);
}

/* ===== Card ===== */
.card {
  break-inside: avoid;
  margin-bottom: var(--gap);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg);
  box-shadow: var(--shadow);
  cursor: pointer;
  position: relative;
  transition: transform .35s cubic-bezier(.25, .8, .25, 1),
    box-shadow .35s cubic-bezier(.25, .8, .25, 1);
  animation: cardEnter .5s ease both;
}

.card:hover {
  transform: translateY(-4px) scale(1.015);
  box-shadow: var(--shadow-lg);
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(30px) scale(.95);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Aspect ratio containers */
.card-media {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.card-media.square {
  padding-top: 100%;
}

.card-media.tall {
  padding-top: 133.33%;
}

.card-media.wide {
  padding-top: 56.25%;
}

.card-media video,
.card-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== Empty Placeholder ===== */
.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 3px dashed;
  border-radius: var(--radius);
  transition: all .3s ease;
}

.placeholder.cats {
  border-color: var(--cat-pink);
  background: var(--cat-pink-l);
}

.placeholder.dogs {
  border-color: var(--dog-blue);
  background: var(--dog-blue-l);
}

.placeholder.turtles {
  border-color: var(--tur-green);
  background: var(--tur-green-l);
}

.placeholder:hover {
  transform: scale(1.02);
}

.placeholder.cats:hover {
  background: #ffe4ea;
}

.placeholder.dogs:hover {
  background: #dfe9ff;
}

.placeholder.turtles:hover {
  background: #dfffec;
}

.placeholder .upload-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: transform .3s ease;
}

.card:hover .upload-icon {
  transform: scale(1.15) rotate(90deg);
}

.placeholder.cats .upload-icon {
  background: var(--cat-pink);
}

.placeholder.dogs .upload-icon {
  background: var(--dog-blue);
}

.placeholder.turtles .upload-icon {
  background: var(--tur-green);
}

.placeholder .upload-text {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-soft);
}

.placeholder .upload-emoji {
  font-size: 1.6rem;
  animation: wiggle 2.5s ease-in-out infinite;
}

/* ===== Upload Progress Overlay ===== */
.upload-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(6px);
  border-radius: var(--radius);
  z-index: 5;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.upload-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.progress-ring {
  width: 56px;
  height: 56px;
  transform: rotate(-90deg);
}

.progress-ring circle {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
}

.progress-ring .bg {
  stroke: #e0e0e0;
}

.progress-ring .fill {
  stroke: var(--cat-pink);
  stroke-dasharray: 157;
  stroke-dashoffset: 157;
  transition: stroke-dashoffset .3s ease;
}

.progress-pct {
  font-size: .9rem;
  font-weight: 700;
  color: var(--text);
}

/* ===== Video Delete Button ===== */
.delete-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, .5);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .3s, transform .2s;
  z-index: 3;
  backdrop-filter: blur(4px);
}

.card:hover .delete-btn {
  opacity: 1;
}

.delete-btn:hover {
  transform: scale(1.15);
  background: rgba(220, 50, 50, .7);
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 30px 20px 50px;
  color: var(--text-soft);
  font-size: .9rem;
  font-weight: 500;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .masonry {
    column-count: 2;
  }
}

@media (max-width: 560px) {
  .masonry {
    column-count: 1;
    max-width: 420px;
  }

  .header {
    padding: 40px 16px 20px;
  }

  .categories {
    gap: 8px;
    padding: 8px 12px 20px;
  }

  .tab {
    font-size: .85rem;
    padding: 8px 16px;
  }
}

/* ===== Utility ===== */
@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger delay classes (set via JS) */
.delay-1 {
  animation-delay: .05s;
}

.delay-2 {
  animation-delay: .10s;
}

.delay-3 {
  animation-delay: .15s;
}

.delay-4 {
  animation-delay: .20s;
}

.delay-5 {
  animation-delay: .25s;
}

.delay-6 {
  animation-delay: .30s;
}

.delay-7 {
  animation-delay: .35s;
}

.delay-8 {
  animation-delay: .40s;
}

.delay-9 {
  animation-delay: .45s;
}

.delay-10 {
  animation-delay: .50s;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 12px 28px;
  background: var(--text);
  color: #fff;
  border-radius: 50px;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  transition: all .4s cubic-bezier(.25, .8, .25, 1);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== Lock Button ===== */
.lock-btn {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--card-bg);
  box-shadow: var(--shadow);
  font-size: 20px;
  cursor: pointer;
  transition: all .3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.lock-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.lock-btn.unlocked {
  background: linear-gradient(135deg, #B5FFD9, #B5D8FF);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    box-shadow: 0 0 8px rgba(181, 255, 217, .4);
  }

  to {
    box-shadow: 0 0 20px rgba(181, 216, 255, .6);
  }
}

/* ===== Auth Modal ===== */
.auth-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, .35);
  backdrop-filter: blur(8px);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.auth-modal.show {
  opacity: 1;
  pointer-events: auto;
}

.auth-box {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 36px 32px 28px;
  width: 340px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .15);
  text-align: center;
  transform: scale(.9) translateY(20px);
  transition: transform .3s cubic-bezier(.25, .8, .25, 1);
}

.auth-modal.show .auth-box {
  transform: scale(1) translateY(0);
}

.auth-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 8px;
}

.auth-emoji {
  font-size: 2rem;
}

.auth-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.auth-desc {
  font-size: .9rem;
  color: var(--text-soft);
  margin-bottom: 20px;
}

.auth-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e8e4e0;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color .3s;
  text-align: center;
  letter-spacing: 2px;
}

.auth-input:focus {
  border-color: var(--all-purple);
}

.auth-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.auth-cancel,
.auth-submit {
  flex: 1;
  padding: 10px 0;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}

.auth-cancel {
  background: #f0ece8;
  color: var(--text-soft);
}

.auth-cancel:hover {
  background: #e4dfd9;
}

.auth-submit {
  background: linear-gradient(135deg, var(--all-purple), var(--cat-pink));
  color: #fff;
}

.auth-submit:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(212, 181, 255, .4);
}

.auth-error {
  margin-top: 12px;
  font-size: .85rem;
  color: #e44;
  min-height: 1.2em;
}

/* Shake animation */
.shake {
  animation: shakeAnim .5s ease;
}

@keyframes shakeAnim {

  0%,
  100% {
    transform: scale(1) translateX(0);
  }

  20% {
    transform: scale(1) translateX(-10px);
  }

  40% {
    transform: scale(1) translateX(8px);
  }

  60% {
    transform: scale(1) translateX(-6px);
  }

  80% {
    transform: scale(1) translateX(4px);
  }
}

/* ===== Re-upload Hint ===== */
.reupload-hint {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px;
  background: linear-gradient(transparent, rgba(0, 0, 0, .5));
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  text-align: center;
  opacity: 0;
  transition: opacity .3s;
  z-index: 2;
}

.card:hover .reupload-hint {
  opacity: 1;
}

/* Placeholder waiting text */
.placeholder-waiting {
  opacity: .5;
  font-style: italic;
}