/* ============================================================
   ROOT VARIABLES - LIGHT THEME
   ============================================================ */
:root {
  --clr-bg: #f4f6fb;
  --clr-surface: #ffffff;
  --clr-surface-2: #eef1f8;
  --clr-border: #e0e4ef;
  --clr-text: #0f1729;
  --clr-text-muted: #5a6380;
  --clr-text-faint: #9aa3be;
  --clr-primary: #4f46e5;
  --clr-primary-dark: #3730a3;
  --clr-primary-light: #818cf8;
  --clr-accent: #06b6d4;
  --clr-accent-2: #f59e0b;
  --clr-img: #7c3aed;
  --clr-img-soft: #ede9fe;
  --clr-pdf: #dc2626;
  --clr-pdf-soft: #fee2e2;
  --grad-hero: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #06b6d4 100%);
  --grad-img: linear-gradient(135deg, #7c3aed, #a855f7);
  --grad-pdf: linear-gradient(135deg, #dc2626, #f97316);
  --grad-card-hover: linear-gradient(135deg, rgba(79, 70, 229, .06), rgba(124, 58, 237, .06));
  --shadow-xs: 0 1px 3px rgba(15, 23, 41, .06);
  --shadow-sm: 0 2px 8px rgba(15, 23, 41, .08), 0 1px 2px rgba(15, 23, 41, .04);
  --shadow-md: 0 4px 20px rgba(15, 23, 41, .10), 0 2px 6px rgba(15, 23, 41, .06);
  --shadow-lg: 0 10px 40px rgba(15, 23, 41, .14), 0 4px 12px rgba(15, 23, 41, .08);
  --shadow-glow: 0 0 30px rgba(79, 70, 229, .25);
  --font-sans: 'Inter', 'Outfit', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;
  --t-fast: 150ms ease;
  --t-base: 250ms ease;
  --t-slow: 400ms cubic-bezier(.4, 0, .2, 1);
  --nav-h: 64px;
  /* Icon system variables */
  --icon-paper: #e8ecf7;
  --icon-paper-edge: #c8d0e8;
  --icon-fold: #adb8d8;
  --icon-frame: #d4d8f0;
  --icon-frame-inner: #eef1fb;
  --icon-green: #10b981;
  --icon-red: #dc2626;
  --icon-purple: #4f46e5;
  --icon-cyan: #06b6d4;
  --icon-amber: #f59e0b;
}

[data-theme="dark"] {
  --clr-bg: #080d1a;
  --clr-surface: #0f1629;
  --clr-surface-2: #1a2240;
  --clr-border: #1e2d52;
  --clr-text: #e8ecf7;
  --clr-text-muted: #8892b5;
  --clr-text-faint: #4a5478;
  --clr-img-soft: #2d1b69;
  --clr-pdf-soft: #450a0a;
  --grad-card-hover: linear-gradient(135deg, rgba(79, 70, 229, .12), rgba(124, 58, 237, .12));
  --shadow-xs: 0 1px 3px rgba(0, 0, 0, .3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, .4), 0 1px 2px rgba(0, 0, 0, .2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, .5), 0 2px 6px rgba(0, 0, 0, .3);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, .6), 0 4px 12px rgba(0, 0, 0, .4);
  --shadow-glow: 0 0 40px rgba(79, 70, 229, .4);
  /* Icon dark mode overrides */
  --icon-paper: #1e2d52;
  --icon-paper-edge: #162240;
  --icon-fold: #0f1629;
  --icon-frame: #2a3a60;
  --icon-frame-inner: #1a2a4a;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  transition: background var(--t-slow), color var(--t-slow);
  overflow-x: hidden;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
select,
textarea {
  font-family: inherit;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
}

h4 {
  font-size: 1.1rem;
  font-weight: 600;
}

p {
  line-height: 1.7;
  color: var(--clr-text-muted);
}

.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

@media(min-width:640px) {
  .container {
    padding-inline: var(--sp-6);
  }
}

@media(min-width:1024px) {
  .container {
    padding-inline: var(--sp-10);
  }
}

.section {
  padding-block: var(--sp-12);
}

@media(min-width:768px) {
  .section {
    padding-block: var(--sp-20);
  }
}

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--t-slow), border-color var(--t-slow);
}

[data-theme="dark"] .nav {
  background: rgba(8, 13, 26, .85);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.nav__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -.02em;
  text-decoration: none;
  color: var(--clr-text);
  line-height: 1;
  flex-shrink: 0;
  transition: opacity var(--t-fast);
}

.nav__logo:hover {
  opacity: .92;
}

.nav__logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--r-md);
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(79, 70, 229, .35);
  display: block;
}

.nav__logo-text {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -.03em;
  color: var(--clr-text);
  display: inline-flex;
  align-items: center;
}

.nav__logo-text > span {
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media(max-width: 480px) {
  .nav__logo {
    font-size: 1.2rem;
    gap: 6px;
  }
  .nav__logo-icon {
    width: 32px;
    height: 32px;
  }
  .nav__logo-text {
    font-size: 1.2rem;
  }
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--sp-1);
}

@media(min-width:768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--t-fast), background var(--t-fast);
}

.nav__link:hover,
.nav__link.active {
  color: var(--clr-primary);
  background: var(--clr-surface-2);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 1.1rem;
  transition: all var(--t-fast);
}

.theme-toggle:hover {
  background: var(--clr-primary);
  color: white;
  border-color: var(--clr-primary);
  transform: rotate(15deg);
}

.hamburger {
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  transition: all var(--t-fast);
}

@media(min-width:768px) {
  .hamburger {
    display: none;
  }
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--t-base);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__drawer {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--sp-4);
  z-index: 99;
  box-shadow: var(--shadow-lg);
}

.nav__drawer.open {
  display: block;
}

.nav__drawer-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: all var(--t-fast);
}

.nav__drawer-link:hover {
  background: var(--clr-surface-2);
  color: var(--clr-primary);
}

/* HERO */
.hero {
  position: relative;
  padding-block: var(--sp-16) var(--sp-12);
  text-align: center;
  overflow: hidden;
}

@media(min-width:768px) {
  .hero {
    padding-block: var(--sp-20);
  }
}

.hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: .35;
}

.hero__blob--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #4f46e5, transparent 70%);
  top: -150px;
  left: -100px;
}

.hero__blob--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  bottom: -100px;
  right: -80px;
}

.hero__blob--3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #7c3aed, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-3);
  border-radius: var(--r-full);
  background: rgba(79, 70, 229, .12);
  border: 1px solid rgba(79, 70, 229, .2);
  color: var(--clr-primary);
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: var(--sp-5);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.hero__title {
  margin-bottom: var(--sp-5);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 600px;
  margin: 0 auto var(--sp-8);
}

/* SEARCH */
.search-wrapper {
  position: relative;
  max-width: 560px;
  margin: 0 auto var(--sp-6);
}

.search-wrapper__icon {
  position: absolute;
  left: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-text-faint);
  font-size: 1.1rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 56px;
  padding: 0 var(--sp-10) 0 52px;
  border-radius: var(--r-full);
  border: 2px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: 1rem;
  font-weight: 500;
  outline: none;
  transition: all var(--t-fast);
  box-shadow: var(--shadow-sm);
}

.search-input::placeholder {
  color: var(--clr-text-faint);
}

.search-input:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, .15), var(--shadow-sm);
}

.search-clear {
  position: absolute;
  right: var(--sp-4);
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: var(--r-full);
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  transition: all var(--t-fast);
}

.search-clear.visible {
  display: flex;
}

.search-clear:hover {
  background: var(--clr-primary);
  color: white;
}

.filter-chips {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--sp-8);
}

.chip {
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--r-full);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast);
  min-height: 36px;
}

.chip:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(79, 70, 229, .06);
}

.chip.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(79, 70, 229, .35);
}

.chip--img.active {
  background: var(--clr-img);
  border-color: var(--clr-img);
  box-shadow: 0 4px 12px rgba(124, 58, 237, .35);
}

.chip--pdf.active {
  background: var(--clr-pdf);
  border-color: var(--clr-pdf);
  box-shadow: 0 4px 12px rgba(220, 38, 38, .35);
}

/* STATS */
.stats-bar {
  display: flex;
  gap: var(--sp-6);
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: .9rem;
  color: var(--clr-text-muted);
}

.stat__value {
  font-weight: 800;
  font-size: 1.1rem;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* SECTION HEADING */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}

.section-heading__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.section-heading__icon--img {
  background: var(--grad-img);
}

.section-heading__icon--pdf {
  background: var(--grad-pdf);
}

.section-heading__text h2 {
  margin-bottom: 2px;
}

.section-heading__text p {
  font-size: .9rem;
}

.section-divider {
  height: 2px;
  background: var(--clr-border);
  position: relative;
  margin-bottom: var(--sp-6);
}

.section-divider::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 80px;
  border-radius: 2px;
}

.section-divider--img::before {
  background: var(--grad-img);
}

.section-divider--pdf::before {
  background: var(--grad-pdf);
}

/* TOOL CARDS */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media(min-width:480px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media(min-width:768px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-5);
  }
}

@media(min-width:1024px) {
  .tools-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-xl);
  padding: var(--sp-5);
  overflow: hidden;
  transition: all var(--t-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  min-height: 180px;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card-hover);
  opacity: 0;
  transition: opacity var(--t-base);
  border-radius: inherit;
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card--img:hover {
  border-color: rgba(124, 58, 237, .3);
}

.tool-card--pdf:hover {
  border-color: rgba(220, 38, 38, .3);
}

.tool-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--sp-3);
  position: relative;
  z-index: 1;
  transition: transform var(--t-base);
}

.tool-card:hover .tool-card__icon {
  transform: scale(1.1);
}

.tool-card--img .tool-card__icon {
  background: var(--clr-img-soft);
}

.tool-card--pdf .tool-card__icon {
  background: var(--clr-pdf-soft);
}

.tool-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--sp-1);
  position: relative;
  z-index: 1;
  color: var(--clr-text);
}

.tool-card--img:hover .tool-card__title {
  color: var(--clr-img);
}

.tool-card--pdf:hover .tool-card__title {
  color: var(--clr-pdf);
}

.tool-card__desc {
  font-size: .84rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
  flex: 1;
  position: relative;
  z-index: 1;
}

.tool-card__arrow {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: var(--sp-4);
  position: relative;
  z-index: 1;
}

.tool-card__arrow span {
  width: 32px;
  height: 32px;
  border-radius: var(--r-full);
  background: var(--clr-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  color: var(--clr-text-muted);
  transition: all var(--t-base);
}

.tool-card--img:hover .tool-card__arrow span {
  background: var(--clr-img);
  color: white;
}

.tool-card--pdf:hover .tool-card__arrow span {
  background: var(--clr-pdf);
  color: white;
}

.tool-card__badge {
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  padding: 2px var(--sp-2);
  border-radius: var(--r-full);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.badge--img {
  background: var(--clr-img-soft);
  color: var(--clr-img);
}

.badge--pdf {
  background: var(--clr-pdf-soft);
  color: var(--clr-pdf);
}

.no-results {
  grid-column: 1/-1;
  text-align: center;
  padding: var(--sp-16) var(--sp-4);
  display: none;
}

.no-results.visible {
  display: block;
}

.no-results__icon {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-6);
  height: 48px;
  border-radius: var(--r-full);
  font-size: .95rem;
  font-weight: 600;
  transition: all var(--t-fast);
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
  min-width: 44px;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  transition: opacity var(--t-fast);
}

.btn:active::after {
  opacity: .12;
}

.btn--primary {
  background: var(--grad-hero);
  color: white;
  box-shadow: 0 4px 15px rgba(79, 70, 229, .4);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, .5);
}

.btn--secondary {
  background: var(--clr-surface);
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border);
}

.btn--secondary:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: rgba(79, 70, 229, .05);
}

.btn--danger {
  background: var(--clr-pdf);
  color: white;
  box-shadow: 0 4px 15px rgba(220, 38, 38, .35);
}

.btn--danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(220, 38, 38, .45);
}

.btn--ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1.5px solid var(--clr-border);
}

.btn--ghost:hover {
  background: var(--clr-surface-2);
  color: var(--clr-text);
}

.btn--sm {
  height: 38px;
  padding: 0 var(--sp-4);
  font-size: .85rem;
}

.btn--lg {
  height: 56px;
  padding: 0 var(--sp-8);
  font-size: 1rem;
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  pointer-events: none;
}

/* TOOL PAGE */
.tool-page {
  padding-block: var(--sp-8) var(--sp-16);
}

.tool-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: .85rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-4);
}

.tool-breadcrumb a {
  color: var(--clr-primary);
}

.tool-breadcrumb a:hover {
  text-decoration: underline;
}

.tool-breadcrumb__sep {
  color: var(--clr-text-faint);
}

.tool-title-row {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-3);
}

.tool-title-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
  overflow: visible;
}

.tool-title-icon .tool-icon {
  width: 60px;
  height: 60px;
}

/* UPLOAD ZONE */
.upload-zone {
  border: 2px dashed var(--clr-border);
  border-radius: var(--r-xl);
  padding: var(--sp-12) var(--sp-8);
  text-align: center;
  background: var(--clr-surface);
  cursor: pointer;
  transition: all var(--t-base);
  position: relative;
  overflow: hidden;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--clr-primary);
  background: rgba(79, 70, 229, .04);
}

.upload-zone.drag-over {
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, .12);
}

.upload-zone__icon {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
  display: block;
}

.upload-zone__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--sp-2);
  color: var(--clr-text);
}

.upload-zone__subtitle {
  font-size: .9rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-4);
}

.upload-zone__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.upload-zone__formats {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--sp-4);
}

.format-tag {
  padding: 2px var(--sp-3);
  border-radius: var(--r-full);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  font-size: .78rem;
  font-weight: 600;
  color: var(--clr-text-muted);
}

/* WORKSPACE */
.tool-workspace {
  display: grid;
  gap: var(--sp-6);
}

@media(min-width:1024px) {
  .tool-workspace--split {
    grid-template-columns: 1fr 1fr;
  }
}

/* PANELS */
.settings-panel {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
}

.settings-panel__title {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-text-faint);
  margin-bottom: var(--sp-5);
}

.form-group {
  margin-bottom: var(--sp-5);
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .9rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
}

.form-label span {
  color: var(--clr-text-faint);
  font-weight: 400;
  font-size: .85rem;
}

.form-input,
.form-select {
  width: 100%;
  height: 44px;
  padding: 0 var(--sp-4);
  border-radius: var(--r-md);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface-2);
  color: var(--clr-text);
  font-size: .95rem;
  outline: none;
  transition: border-color var(--t-fast);
}

.form-input:focus,
.form-select:focus {
  border-color: var(--clr-primary);
}

.form-range {
  width: 100%;
  border-radius: var(--r-full);
  accent-color: var(--clr-primary);
  cursor: pointer;
  border: none;
  outline: none;
  padding: 0;
  height: 36px;
  background: transparent;
}

.preview-panel {
  background: var(--clr-surface);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--r-xl);
  overflow: hidden;
}

.preview-panel__header {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--clr-surface-2);
}

.preview-panel__title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-text);
}

.preview-panel__body {
  padding: var(--sp-5);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  background: repeating-conic-gradient(var(--clr-surface-2) 0% 25%, transparent 0% 50%) 0 0/20px 20px;
}

.preview-img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
}

/* PROGRESS */
.progress-bar {
  height: 6px;
  background: var(--clr-surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
  margin-block: var(--sp-4);
}

.progress-bar__fill {
  height: 100%;
  background: var(--grad-hero);
  border-radius: var(--r-full);
  transition: width var(--t-base);
  width: 0%;
}

.status-msg {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  font-size: .9rem;
  font-weight: 500;
  margin-block: var(--sp-3);
}

.status-msg--success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.status-msg--error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.status-msg--info {
  background: rgba(79, 70, 229, .08);
  color: var(--clr-primary);
  border: 1px solid rgba(79, 70, 229, .2);
}

[data-theme="dark"] .status-msg--success {
  background: #064e3b;
  color: #6ee7b7;
  border-color: #065f46;
}

[data-theme="dark"] .status-msg--error {
  background: #450a0a;
  color: #fca5a5;
  border-color: #991b1b;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, .3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.spinner--dark {
  border-color: rgba(79, 70, 229, .2);
  border-top-color: var(--clr-primary);
}

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

/* FILE LIST */
.file-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-block: var(--sp-4);
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  font-size: .9rem;
}

.file-item__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.file-item__name {
  flex: 1;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item__size {
  color: var(--clr-text-faint);
  font-size: .8rem;
  flex-shrink: 0;
}

.file-item__remove {
  width: 28px;
  height: 28px;
  border-radius: var(--r-full);
  background: transparent;
  color: var(--clr-text-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--t-fast);
  flex-shrink: 0;
}

.file-item__remove:hover {
  background: var(--clr-pdf-soft);
  color: var(--clr-pdf);
}

/* HOW TO USE */
.how-to-section {
  margin-top: var(--sp-12);
  padding-top: var(--sp-12);
  border-top: 1px solid var(--clr-border);
}

.how-to-steps {
  display: grid;
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
}

@media(min-width:768px) {
  .how-to-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
}

.step-card__num {
  width: 36px;
  height: 36px;
  border-radius: var(--r-full);
  background: var(--grad-hero);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin-bottom: var(--sp-3);
}

.step-card h4 {
  margin-bottom: var(--sp-1);
}

.faq {
  margin-top: var(--sp-8);
}

.faq__item {
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-3);
  overflow: hidden;
}

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--sp-5);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-weight: 600;
  font-size: .95rem;
  text-align: left;
  cursor: pointer;
  transition: background var(--t-fast);
}

.faq__q:hover {
  background: var(--clr-surface-2);
}

.faq__q[aria-expanded="true"] .faq__icon {
  transform: rotate(180deg);
}

.faq__icon {
  transition: transform var(--t-fast);
  color: var(--clr-text-muted);
  flex-shrink: 0;
}

.faq__a {
  display: none;
  padding: 0 var(--sp-5) var(--sp-4);
  background: var(--clr-surface);
  font-size: .9rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.faq__a.open {
  display: block;
}

/* FOOTER */
.footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-block: var(--sp-12) var(--sp-8);
  margin-top: var(--sp-16);
}

.footer__inner {
  display: grid;
  gap: var(--sp-8);
}

@media(min-width:768px) {
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand p {
  font-size: .9rem;
  margin-top: var(--sp-3);
  max-width: 280px;
}

.footer__col h4 {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--clr-text-faint);
  margin-bottom: var(--sp-4);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer__col a {
  font-size: .9rem;
  color: var(--clr-text-muted);
  transition: color var(--t-fast);
}

.footer__col a:hover {
  color: var(--clr-primary);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-3);
  padding-top: var(--sp-8);
  margin-top: var(--sp-8);
  border-top: 1px solid var(--clr-border);
  font-size: .85rem;
  color: var(--clr-text-faint);
}

.footer__bottom a {
  color: var(--clr-primary);
}

.footer__bottom a:hover {
  text-decoration: underline;
}

/* UTILITIES */
.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--sp-2);
}

.gap-4 {
  gap: var(--sp-4);
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--clr-text-muted);
}

.text-faint {
  color: var(--clr-text-faint);
}

.font-bold {
  font-weight: 700;
}

.mt-4 {
  margin-top: var(--sp-4);
}

.mt-6 {
  margin-top: var(--sp-6);
}

.mt-8 {
  margin-top: var(--sp-8);
}

.mb-4 {
  margin-bottom: var(--sp-4);
}

.mb-6 {
  margin-bottom: var(--sp-6);
}

.w-full {
  width: 100%;
}

.gradient-text {
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Tool icon sizing */
.tool-icon {
  width: 48px;
  height: 48px;
  display: block;
  flex-shrink: 0;
}

@media(min-width:768px) {
  .tool-icon {
    width: 56px;
    height: 56px;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-border);
  border-radius: var(--r-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-text-faint);
}

::selection {
  background: rgba(79, 70, 229, .25);
  color: var(--clr-text);
}

.lazy {
  opacity: 0;
  transition: opacity .4s;
}

.lazy.loaded {
  opacity: 1;
}

.color-swatch {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  border: 2px solid var(--clr-border);
  cursor: pointer;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.color-swatch:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.color-palette {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.color-info {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--clr-surface-2);
  border-radius: var(--r-md);
  font-family: var(--font-mono);
  font-size: .9rem;
}

.pdf-canvas-wrapper {
  overflow: auto;
  max-height: 600px;
  background: var(--clr-bg);
  border-radius: var(--r-md);
  padding: var(--sp-4);
}

.pdf-canvas-wrapper canvas {
  display: block;
  margin: 0 auto var(--sp-4);
  box-shadow: var(--shadow-md);
  border-radius: var(--r-sm);
}

.pdf-page-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  justify-content: center;
  padding: var(--sp-4);
  border-top: 1px solid var(--clr-border);
}

.pdf-thumbs-strip {
  display: flex;
  gap: var(--sp-2);
  overflow-x: auto;
  padding: var(--sp-2);
  background: var(--clr-surface-2);
  border-radius: var(--r-md);
}

.pdf-thumb {
  cursor: pointer;
  border: 2px solid var(--clr-border);
  border-radius: var(--r-sm);
  overflow: hidden;
  transition: border-color var(--t-fast);
}

.pdf-thumb.active {
  border-color: var(--clr-primary);
}

.pdf-thumb:hover {
  border-color: var(--clr-primary-light);
}

.toggle-switch {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  cursor: pointer;
}

.toggle-switch input {
  display: none;
}

.toggle-track {
  width: 44px;
  height: 24px;
  background: var(--clr-border);
  border-radius: var(--r-full);
  position: relative;
  transition: background var(--t-fast);
}

.toggle-track::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform var(--t-fast);
  box-shadow: var(--shadow-xs);
}

.toggle-switch input:checked+.toggle-track {
  background: var(--clr-primary);
}

.toggle-switch input:checked+.toggle-track::after {
  transform: translateX(20px);
}

.toggle-label {
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text);
}

.drag-handle {
  cursor: grab;
  color: var(--clr-text-faint);
  padding: var(--sp-2);
}

.drag-handle:active {
  cursor: grabbing;
}

.sortable-ghost {
  opacity: .4;
}

.sortable-chosen {
  box-shadow: var(--shadow-lg);
}