/* reset, typography, glassmorphism utilities */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

[data-theme="light"] {
  scrollbar-color: rgba(0, 0, 0, 0.15) transparent;
}

html::-webkit-scrollbar {
  width: 8px;
  background: transparent;
}

html::-webkit-scrollbar-track {
  background: transparent;
}

html::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: content-box;
}

html::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
  border: 2px solid transparent;
  background-clip: content-box;
}

[data-theme="light"] html::-webkit-scrollbar-thumb,
[data-theme="light"]::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border: 2px solid transparent;
  background-clip: content-box;
}

[data-theme="light"] html::-webkit-scrollbar-thumb:hover,
[data-theme="light"]::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
  border: 2px solid transparent;
  background-clip: content-box;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  height: 100vh;
  max-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  transition:
    background-color var(--transition-theme),
    color var(--transition-theme);
}

/* smooth theme transitions */
header,
.tab-content,
.glass-panel,
.modal {
  transition:
    background var(--transition-theme),
    background-color var(--transition-theme),
    border-color var(--transition-theme),
    box-shadow var(--transition-theme),
    color var(--transition-theme);
}

/* links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
}

/* scrollbar styling for content areas */
.scrollable {
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

[data-theme="light"] .scrollable {
  scrollbar-color: rgba(0, 0, 0, 0.15) transparent;
}

.scrollable::-webkit-scrollbar {
  width: 6px;
}

.scrollable::-webkit-scrollbar-track {
  background: transparent;
}

.scrollable::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

.scrollable::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .scrollable::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .scrollable::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}

/* background gradient for liquid glass effect */
.glass-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 100% 80% at 10% 20%, rgba(52, 211, 153, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse 80% 60% at 90% 30%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 90%, rgba(52, 211, 153, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 30% 70%, rgba(168, 85, 247, 0.12) 0%, transparent 50%);
  pointer-events: none;
  animation: glassBgShift 20s ease-in-out infinite alternate;
  transition: background var(--transition-theme);
}

@keyframes glassBgShift {
  0% {
    transform: scale(1) translate(0, 0);
  }
  100% {
    transform: scale(1.05) translate(2%, 2%);
  }
}

[data-theme="light"] .glass-bg {
  background:
    radial-gradient(ellipse 100% 80% at 10% 20%, rgba(16, 185, 129, 0.18) 0%, transparent 50%),
    radial-gradient(ellipse 80% 60% at 90% 30%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 90%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 30% 70%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
}

/* glassmorphism utility classes */
.glass-panel {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.05) 100%
  );
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  padding: 20px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.35),
    0 2px 8px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

/* inner glossy highlight */
.glass-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.12) 0%,
    rgba(255, 255, 255, 0) 100%
  );
  pointer-events: none;
}

/* top edge shine */
.glass-panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.4),
    rgba(255, 255, 255, 0)
  );
}

[data-theme="light"] .glass-panel {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.85) 0%,
    rgba(255, 255, 255, 0.6) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.1),
    0 2px 8px rgba(0, 0, 0, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .glass-panel::before {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.6) 0%,
    rgba(255, 255, 255, 0) 100%
  );
}

[data-theme="light"] .glass-panel::after {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 1),
    rgba(255, 255, 255, 0)
  );
}

/* page load animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}