/* ---------- template styles (sama persis dgn yang Anda berikan) ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --primary: #6750a4;
  --on-primary: #ffffff;
  --primary-container: #eaddff;
  --on-primary-container: #21005d;
  --secondary: #625b71;
  --on-secondary: #ffffff;
  --secondary-container: #e8def8;
  --on-secondary-container: #1d192b;
  --tertiary: #7d5260;
  --on-tertiary: #ffffff;
  --background: #fffbfe;
  --on-background: #1c1b1f;
  --surface: #fffbfe;
  --on-surface: #1c1b1f;
  --surface-variant: #e7e0ec;
  --on-surface-variant: #49454f;
  --outline: #79747e;
  --shadow: rgba(0, 0, 0, 0.15);
}
[data-theme="dark"] {
  --primary: #d0bcff;
  --on-primary: #381e72;
  --primary-container: #4f378b;
  --on-primary-container: #eaddff;
  --secondary: #ccc2dc;
  --on-secondary: #332d41;
  --secondary-container: #4a4458;
  --on-secondary-container: #e8def8;
  --tertiary: #efb8c8;
  --on-tertiary: #492532;
  --background: #1c1b1f;
  --on-background: #e6e1e5;
  --surface: #1c1b1f;
  --on-surface: #e6e1e5;
  --surface-variant: #49454f;
  --on-surface-variant: #cac4d0;
  --outline: #938f99;
  --shadow: rgba(0, 0, 0, 0.5);
}
body {
  font-family: "Roboto", sans-serif;
  background-color: var(--background);
  color: var(--on-background);
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
  overflow-x: hidden;
}
.app-bar {
  background-color: var(--surface);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 4px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color 0.3s ease;
}
.app-bar h1 {
  font-size: 22px;
  font-weight: 500;
  color: var(--on-surface);
}
.theme-toggle {
  background: none;
  border: none;
  color: var(--on-surface);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background-color 0.2s,
    transform 0.2s;
}
.theme-toggle:hover {
  background-color: var(--surface-variant);
  transform: scale(1.1);
}
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}
.fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background-color: var(--primary-container);
  color: var(--on-primary-container);
  border: none;
  border-radius: 16px;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 8px var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 50;
}
.fab:hover {
  box-shadow: 0 6px 12px var(--shadow);
  transform: scale(1.05);
}
.fab:active {
  transform: scale(0.95);
}
.card {
  background-color: var(--surface);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}
.card:hover {
  box-shadow: 0 4px 12px var(--shadow);
  transform: translateY(-2px);
}
.card:active {
  transform: scale(0.98);
}
.card-header {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}
.card-icon {
  width: 48px;
  height: 48px;
  background-color: var(--secondary-container);
  color: var(--on-secondary-container);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-right: 16px;
}
.card-title {
  font-size: 18px;
  font-weight: 500;
  color: var(--on-surface);
}
.card-subtitle {
  font-size: 14px;
  color: var(--on-surface-variant);
  margin-top: 4px;
}
.card-content {
  color: var(--on-surface-variant);
  font-size: 14px;
  line-height: 1.5;
}
.button {
  background-color: var(--primary);
  color: var(--on-primary);
  border: none;
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px var(--shadow);
  margin-top: 12px;
}
.button:hover {
  box-shadow: 0 4px 8px var(--shadow);
  transform: translateY(-1px);
}
.button:active {
  transform: scale(0.95);
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background-color: var(--surface-variant);
  color: var(--on-surface-variant);
  border-radius: 8px;
  font-size: 13px;
  margin-right: 8px;
  margin-top: 8px;
  transition: all 0.2s ease;
}
.chip:hover {
  background-color: var(--secondary-container);
  transform: scale(1.05);
}
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--surface);
  display: flex;
  justify-content: space-around;
  padding: 12px 0;
  box-shadow: 0 -2px 8px var(--shadow);
  z-index: 100;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--on-surface-variant);
  text-decoration: none;
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 16px;
  transition: all 0.2s ease;
  cursor: pointer;
}
.nav-item:hover {
  background-color: var(--surface-variant);
}
.nav-item.active {
  color: var(--on-secondary-container);
  background-color: var(--secondary-container);
}
.nav-item i {
  font-size: 24px;
  margin-bottom: 4px;
  transition: transform 0.2s ease;
}
.nav-item:active i {
  transform: scale(0.9);
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.card {
  animation: fadeIn 0.5s ease forwards;
}
.card:nth-child(1) {
  animation-delay: 0.1s;
}
.card:nth-child(2) {
  animation-delay: 0.2s;
}
.card:nth-child(3) {
  animation-delay: 0.3s;
}
.card:nth-child(4) {
  animation-delay: 0.4s;
}
.ripple {
  position: relative;
  overflow: hidden;
}
.ripple::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  width: 100px;
  height: 100px;
  margin-left: -50px;
  margin-top: -50px;
  animation: ripple-effect 0.6s;
  opacity: 0;
}
@keyframes ripple-effect {
  from {
    opacity: 1;
    transform: scale(0);
  }
  to {
    opacity: 0;
    transform: scale(4);
  }
}
.search-bar {
  background-color: var(--surface-variant);
  padding: 12px 16px;
  border-radius: 28px;
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}
.search-bar:focus-within {
  box-shadow: 0 4px 8px var(--shadow);
  background-color: var(--surface);
}
.search-bar i {
  color: var(--on-surface-variant);
  margin-right: 12px;
}
.search-bar input {
  background: none;
  border: none;
  outline: none;
  flex: 1;
  color: var(--on-surface);
  font-size: 16px;
  font-family: "Roboto", sans-serif;
}
.search-bar input::placeholder {
  color: var(--on-surface-variant);
}

/* ---------- upload form small styles ---------- */
#uploadForm input[type="file"] {
  width: 100%;
  padding: 8px 6px;
  border-radius: 8px;
  background: transparent;
  color: var(--on-surface);
  border: 1px dashed var(--surface-variant);
}
#uploadForm input[type="number"] {
  margin-top: 8px;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--surface-variant);
  background: transparent;
  color: var(--on-surface);
}

.tab-content { display:none; animation:fade .35s cubic-bezier(.4,0,.2,1); }
.tab-content.active { display:block; }

@keyframes fade {
  from { opacity:0; transform:translateX(24px); }
  to { opacity:1; transform:none; }
}

.result-card { gap:16px; }
.link-box {
  background:var(--surface-variant);
  padding:14px;
  border-radius:12px;
  word-break:break-all;
}

.action-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
}

.action-btn {
  background:var(--secondary-container);
  color:var(--on-secondary-container);
  border:none;
  border-radius:14px;
  padding:12px 8px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  cursor:pointer;
  margin-top: 20px;
}

/* ---------- loading overlay (Material You style) ---------- */
.loading-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  background: rgba(28, 27, 31, 0.6);
  backdrop-filter: blur(4px);
}
.loading-overlay.show {
  display: flex;
}
.loading-card {
  background: var(--surface);
  padding: 18px 22px;
  border-radius: 16px;
  box-shadow: 0 8px 24px var(--shadow);
  display: flex;
  align-items: center;
  gap: 14px;
}
.material-spinner {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  position: relative;
  background: conic-gradient(
    var(--primary) 0% 40%,
    rgba(0, 0, 0, 0.07) 40% 100%
  );
  animation: spin 1s linear infinite;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.loading-text {
  color: var(--on-surface);
  font-weight: 500;
}

/* responsive tweaks */
@media (max-width: 520px) {
  .container {
    padding: 12px;
  }
  .card {
    padding: 16px;
  }
}

/* === TAB SYSTEM (Material You style) === */
.tab-content {
    display: none;
    animation: tabFade 0.35s cubic-bezier(0.4,0,0.2,1);
}

.tab-content.active {
    display: block;
}

@keyframes tabFade {
    from {
        opacity: 0;
        transform: translateX(24px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.bottom-nav button {
    background: none;
    border: none;
}