/* ==============================================================
   AI NEXUS — Complete CSS3 Design System v2.0
   Theme: Premium Dark Mode Bento Grid
   ============================================================== */

/* ==============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================== */
:root {
  --bg-primary:       #0A0A0A;
  --bg-secondary:     #0f172a;
  --bg-card:          #1e293b;
  --bg-card-hover:    #263550;
  --bg-elevated:      #1a1a2e;
  --bg-input:         #0f1729;
  --text-primary:     #f1f5f9;
  --text-secondary:   #94a3b8;
  --text-muted:       #64748b;
  --text-accent:      #818cf8;
  --accent-primary:   #818cf8;
  --accent-secondary: #a78bfa;
  --accent-glow:      rgba(129, 140, 248, 0.15);
  --accent-gradient:  linear-gradient(135deg, #818cf8 0%, #a78bfa 50%, #c084fc 100%);
  --accent-gradient-text: linear-gradient(135deg, #818cf8, #c084fc, #f472b6);
  --color-free:       #34d399;
  --color-freemium:   #fbbf24;
  --color-paid:       #f87171;
  --border-subtle:    rgba(255, 255, 255, 0.06);
  --border-card:      rgba(255, 255, 255, 0.08);
  --border-hover:     rgba(129, 140, 248, 0.3);
  --glow-card:        0 0 30px rgba(129, 140, 248, 0.05);
  --glow-card-hover:  0 0 40px rgba(129, 140, 248, 0.12);
  --radius-sm:        8px;
  --radius-md:        12px;
  --radius-lg:        16px;
  --radius-xl:        20px;
  --radius-full:      9999px;
  --space-xs:         4px;
  --space-sm:         8px;
  --space-md:         16px;
  --space-lg:         24px;
  --space-xl:         32px;
  --space-2xl:        48px;
  --space-3xl:        64px;
  --font-family:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs:     0.75rem;
  --font-size-sm:     0.875rem;
  --font-size-base:   1rem;
  --font-size-lg:     1.125rem;
  --font-size-xl:     1.5rem;
  --font-size-2xl:    2rem;
  --font-size-3xl:    2.5rem;
  --font-size-4xl:    3.5rem;
  --transition-fast:  150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:  250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:  400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-splash: 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==============================================================
   2. RESET & BASE
   ============================================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-family); background-color: var(--bg-primary); color: var(--text-primary); line-height: 1.6; min-height: 100vh; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; color: inherit; }
input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
::selection { background: var(--accent-primary); color: var(--bg-primary); }

/* ==============================================================
   3. SPLASH SCREEN
   ============================================================== */
.splash { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; background: var(--bg-primary); opacity: 1; visibility: visible; transition: opacity var(--transition-splash), visibility var(--transition-splash); }
.splash--hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.splash__orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; animation: orbFloat 6s ease-in-out infinite; }
.splash__orb--1 { width: 300px; height: 300px; background: var(--accent-primary); top: 10%; left: 15%; }
.splash__orb--2 { width: 250px; height: 250px; background: var(--accent-secondary); bottom: 15%; right: 10%; animation-delay: -2s; }
.splash__orb--3 { width: 200px; height: 200px; background: #c084fc; top: 50%; left: 60%; animation-delay: -4s; }
@keyframes orbFloat { 0%, 100% { transform: translate(0, 0) scale(1); } 33% { transform: translate(30px, -20px) scale(1.05); } 66% { transform: translate(-20px, 15px) scale(0.95); } }
.splash__content { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); z-index: 1; animation: splashFadeIn 0.8s ease-out; }
@keyframes splashFadeIn { from { opacity: 0; transform: translateY(20px) scale(0.95); } to { opacity: 1; transform: translateY(0) scale(1); } }
.splash__title { font-size: var(--font-size-4xl); font-weight: 900; letter-spacing: -1px; display: flex; gap: var(--space-sm); }
.splash__title-ai { background: var(--accent-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.splash__title-nexus { color: var(--text-primary); }
.splash__tagline { font-size: var(--font-size-lg); color: var(--text-secondary); font-weight: 300; letter-spacing: 0.5px; }
.splash__loader { width: 200px; height: 3px; background: var(--border-subtle); border-radius: var(--radius-full); overflow: hidden; margin-top: var(--space-lg); }
.splash__loader-bar { width: 0%; height: 100%; background: var(--accent-gradient); border-radius: var(--radius-full); animation: loaderProgress 2.8s ease-in-out forwards; }
@keyframes loaderProgress { 0% { width: 0%; } 40% { width: 35%; } 70% { width: 70%; } 100% { width: 100%; } }

/* ==============================================================
   4. DASHBOARD LAYOUT
   ============================================================== */
.dashboard { max-width: 1400px; margin: 0 auto; padding: var(--space-lg); opacity: 0; transform: translateY(10px); transition: opacity 0.5s ease-out 0.1s, transform 0.5s ease-out 0.1s; }
.dashboard--visible { opacity: 1; transform: translateY(0); }

/* ==============================================================
   5. HEADER
   ============================================================== */
.header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-md) 0; margin-bottom: var(--space-xl); flex-wrap: wrap; gap: var(--space-md); }
.header__brand { display: flex; align-items: center; gap: var(--space-md); }
.header__logo { position: relative; width: 40px; height: 40px; }
.header__logo-core { position: absolute; inset: 10px; border-radius: 50%; background: var(--accent-gradient); box-shadow: 0 0 20px rgba(129, 140, 248, 0.4); }
.header__logo-ring { position: absolute; inset: 0; border-radius: 50%; border: 2px solid transparent; border-top-color: var(--accent-primary); border-right-color: var(--accent-secondary); animation: logoSpin 3s linear infinite; }
@keyframes logoSpin { to { transform: rotate(360deg); } }
.header__title { font-size: var(--font-size-xl); font-weight: 800; letter-spacing: -0.5px; }
.header__title-ai { background: var(--accent-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.header__nav { display: flex; align-items: center; gap: var(--space-lg); }
.header__nav-link { font-size: var(--font-size-sm); font-weight: 500; color: var(--text-muted); padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-sm); transition: color var(--transition-fast), background var(--transition-fast); display: flex; align-items: center; gap: var(--space-xs); }
.header__nav-link:hover, .header__nav-link--active { color: var(--text-primary); }
.header__nav-link--active { background: rgba(129, 140, 248, 0.1); color: var(--accent-primary); }
.header__badge { font-size: var(--font-size-xs); background: var(--accent-primary); color: var(--bg-primary); padding: 1px 7px; border-radius: var(--radius-full); font-weight: 700; }

/* ==============================================================
   6. VIEW SYSTEM (Discover / Categories / Saved)
   ============================================================== */
.view-section { display: none; }
.view-section--active { display: grid; }
#view-categories.view-section--active,
#view-saved.view-section--active { display: block; }
.view-header { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-xl); padding-bottom: var(--space-md); border-bottom: 1px solid var(--border-subtle); }
.view-header__back { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.05); border: 1px solid var(--border-card); border-radius: var(--radius-full); color: var(--text-secondary); transition: all var(--transition-fast); }
.view-header__back:hover { background: rgba(129, 140, 248, 0.15); border-color: var(--accent-primary); color: var(--accent-primary); }
.view-header__title { font-size: var(--font-size-xl); font-weight: 800; flex: 1; }
.view-header__action { display: flex; align-items: center; gap: var(--space-xs); font-size: var(--font-size-sm); font-weight: 600; padding: var(--space-sm) var(--space-md); background: rgba(129, 140, 248, 0.1); border: 1px solid var(--border-card); border-radius: var(--radius-md); color: var(--accent-primary); transition: all var(--transition-fast); }
.view-header__action:hover { background: rgba(129, 140, 248, 0.2); border-color: var(--accent-primary); }

/* ==============================================================
   23. ABOUT ME & FEEDBACK
   ============================================================== */
.btn-about, .btn-feedback { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs); padding: 8px 12px; border-radius: var(--radius-full); font-size: var(--font-size-sm); font-weight: 600; cursor: pointer; transition: all var(--transition-fast); border: 1px solid transparent; }
.btn-about { background: linear-gradient(135deg, rgba(129, 140, 248, 0.15), rgba(192, 132, 252, 0.15)); border-color: rgba(192, 132, 252, 0.3); color: #c084fc; }
.btn-about:hover { background: linear-gradient(135deg, rgba(129, 140, 248, 0.25), rgba(192, 132, 252, 0.25)); border-color: #c084fc; box-shadow: 0 0 15px rgba(192, 132, 252, 0.2); transform: translateY(-1px); }
.btn-about__icon { font-size: 16px; }

.btn-feedback { background: rgba(255, 255, 255, 0.05); border-color: var(--border-card); color: var(--text-secondary); }
.btn-feedback:hover { background: rgba(255, 255, 255, 0.1); color: var(--text-primary); border-color: rgba(255, 255, 255, 0.2); }

.modal--about .about-header { text-align: center; margin-bottom: var(--space-lg); }
.modal--about .about-avatar { font-size: 48px; margin-bottom: var(--space-sm); animation: wave 2s infinite; display: inline-block; transform-origin: bottom center; }
@keyframes wave { 0% { transform: rotate(0deg); } 20% { transform: rotate(15deg); } 40% { transform: rotate(-10deg); } 60% { transform: rotate(15deg); } 80% { transform: rotate(-10deg); } 100% { transform: rotate(0deg); } }
.modal--about .about-title { font-size: var(--font-size-2xl); color: var(--text-primary); font-weight: 700; }
.modal--about .about-content { font-size: var(--font-size-md); color: var(--text-secondary); line-height: 1.6; text-align: left; }
.modal--about .about-content p { margin-bottom: var(--space-md); }
.modal--about .about-footer { margin-top: var(--space-xl); text-align: center; }
.about-contact-btn { display: inline-block; padding: 12px 24px; background: var(--accent-primary); color: #fff; font-weight: 600; border-radius: var(--radius-md); text-decoration: none; transition: all var(--transition-fast); }
.about-contact-btn:hover { background: var(--accent-hover); box-shadow: 0 4px 15px rgba(129, 140, 248, 0.3); }

.feedback-form { display: flex; flex-direction: column; gap: var(--space-md); margin-top: var(--space-lg); }
.feedback-textarea { width: 100%; padding: var(--space-md); background: rgba(0, 0, 0, 0.2); border: 1px solid var(--border-card); border-radius: var(--radius-md); color: var(--text-primary); font-family: inherit; font-size: var(--font-size-md); resize: vertical; transition: border-color var(--transition-fast); outline: none; }
.feedback-textarea:focus { border-color: var(--accent-primary); }
.feedback-submit-btn { padding: 12px; background: var(--accent-primary); color: #fff; font-weight: 600; border: none; border-radius: var(--radius-md); cursor: pointer; transition: all var(--transition-fast); }
.feedback-submit-btn:hover { background: var(--accent-hover); box-shadow: 0 4px 15px rgba(129, 140, 248, 0.3); }
.feedback-submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.feedback-status { margin-top: var(--space-md); text-align: center; font-size: var(--font-size-sm); min-height: 20px; }
.feedback-status--success { color: #34d399; }
.feedback-status--error { color: #f87171; }

/* ==============================================================
   7. BENTO GRID
   ============================================================== */
.bento-grid { grid-template-columns: repeat(12, 1fr); gap: var(--space-lg); margin-bottom: var(--space-2xl); }
.bento-card--hero { grid-column: 1 / -1; }
.bento-card--filter { grid-column: 1 / 7; }
.bento-card--stats { grid-column: 7 / -1; }
.bento-card--results { grid-column: 1 / -1; }
.bento-card--trending { grid-column: 1 / 5; }
.bento-card--categories { grid-column: 5 / -1; }

/* ==============================================================
   8. BENTO CARDS (Shared)
   ============================================================== */
.bento-card { position: relative; background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: var(--space-lg); overflow: hidden; transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base); animation: cardEntrance 0.5s ease-out backwards; }
.bento-card--hero { animation-delay: 0.1s; }
.bento-card--filter { animation-delay: 0.2s; }
.bento-card--stats { animation-delay: 0.3s; }
.bento-card--results { animation-delay: 0.4s; }
.bento-card--trending { animation-delay: 0.5s; }
.bento-card--categories { animation-delay: 0.6s; }
@keyframes cardEntrance { from { opacity: 0; transform: translateY(20px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.bento-card:hover { border-color: var(--border-hover); box-shadow: var(--glow-card-hover); transform: translateY(-2px); }
.bento-card__glow { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at 30% 30%, rgba(129, 140, 248, 0.03) 0%, transparent 60%); pointer-events: none; }
.bento-card__title { font-size: var(--font-size-base); font-weight: 600; color: var(--text-secondary); margin-bottom: var(--space-md); display: flex; align-items: center; gap: var(--space-sm); }
.bento-card__title-icon { font-size: var(--font-size-lg); }

/* ==============================================================
   9. HERO / SMART QUERY BAR
   ============================================================== */
.bento-card--hero { padding: var(--space-3xl) var(--space-2xl); text-align: center; background: radial-gradient(ellipse at 50% 0%, rgba(129, 140, 248, 0.08) 0%, transparent 60%), var(--bg-card); }
.hero__content { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.hero__heading { font-size: var(--font-size-3xl); font-weight: 800; line-height: 1.2; letter-spacing: -1px; margin-bottom: var(--space-md); }
.hero__heading-accent { background: var(--accent-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero__subtext { font-size: var(--font-size-lg); color: var(--text-secondary); margin-bottom: var(--space-xl); font-weight: 300; }
.visually-hidden { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.query-bar { display: flex; align-items: center; background: var(--bg-input); border: 1px solid var(--border-card); border-radius: var(--radius-full); padding: var(--space-sm) var(--space-sm) var(--space-sm) var(--space-lg); transition: border-color var(--transition-base), box-shadow var(--transition-base); max-width: 640px; margin: 0 auto; }
.query-bar:focus-within { border-color: var(--accent-primary); box-shadow: 0 0 0 3px var(--accent-glow), 0 0 30px rgba(129, 140, 248, 0.1); }
.query-bar__icon { color: var(--text-muted); flex-shrink: 0; display: flex; align-items: center; margin-right: var(--space-sm); }
.query-bar__input { flex: 1; background: transparent; border: none; outline: none; font-family: var(--font-family); font-size: var(--font-size-base); color: var(--text-primary); padding: var(--space-sm) 0; min-width: 0; }
.query-bar__input::placeholder { color: var(--text-muted); font-weight: 300; }
.query-bar__btn { flex-shrink: 0; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--accent-gradient); border-radius: 50%; color: white; transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.query-bar__btn:hover { transform: scale(1.08); box-shadow: 0 0 20px rgba(129, 140, 248, 0.4); }
.query-bar__btn:active { transform: scale(0.95); }

/* Suggestion Chips */
.hero__chips { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-sm); margin-top: var(--space-lg); }
.chip { font-size: var(--font-size-sm); padding: var(--space-xs) var(--space-md); background: rgba(129, 140, 248, 0.08); border: 1px solid var(--border-card); border-radius: var(--radius-full); color: var(--text-secondary); transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); white-space: nowrap; }
.chip:hover { background: rgba(129, 140, 248, 0.15); border-color: var(--accent-primary); color: var(--text-primary); transform: translateY(-1px); }

/* Search History */
.hero__history { margin-top: var(--space-lg); }
.hero__history-label { font-size: var(--font-size-xs); text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); font-weight: 600; margin-bottom: var(--space-sm); }
.hero__history-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-xs); }
.history-chip { font-size: var(--font-size-xs); padding: 3px var(--space-sm); background: rgba(255,255,255,0.03); border: 1px solid var(--border-subtle); border-radius: var(--radius-full); color: var(--text-muted); transition: all var(--transition-fast); display: flex; align-items: center; gap: var(--space-xs); }
.history-chip:hover { border-color: var(--accent-primary); color: var(--text-primary); background: rgba(129, 140, 248, 0.08); }
.history-chip__remove { font-size: 14px; opacity: 0.5; transition: opacity var(--transition-fast); line-height: 1; }
.history-chip__remove:hover { opacity: 1; color: var(--color-paid); }

/* ==============================================================
   10. BUDGET FILTER
   ============================================================== */
.filter-group { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.filter-pill { cursor: pointer; display: inline-flex; align-items: center; }
.filter-pill__label { font-size: var(--font-size-sm); font-weight: 500; padding: var(--space-sm) var(--space-lg); border-radius: var(--radius-full); border: 1px solid var(--border-card); background: transparent; color: var(--text-secondary); transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast); }
.filter-pill:hover .filter-pill__label { border-color: var(--accent-primary); color: var(--text-primary); }
.filter-pill--active .filter-pill__label, .filter-pill input:checked + .filter-pill__label { background: var(--accent-gradient); border-color: transparent; color: white; box-shadow: 0 0 20px rgba(129, 140, 248, 0.25); }

/* ==============================================================
   11. STATS CARD
   ============================================================== */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }
.stat-item { text-align: center; padding: var(--space-md); background: rgba(255, 255, 255, 0.02); border-radius: var(--radius-md); border: 1px solid var(--border-subtle); }
.stat-item__value { display: block; font-size: var(--font-size-2xl); font-weight: 800; background: var(--accent-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-item__label { display: block; font-size: var(--font-size-xs); color: var(--text-muted); margin-top: var(--space-xs); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }

/* ==============================================================
   12. RESULTS CARD & TOOL CARDS
   ============================================================== */
.results-container { min-height: 120px; }
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--space-2xl); text-align: center; }
.empty-state__icon { font-size: 3rem; margin-bottom: var(--space-md); opacity: 0.5; }
.empty-state__text { color: var(--text-muted); max-width: 400px; line-height: 1.6; }

.tool-card { display: flex; align-items: flex-start; gap: var(--space-lg); padding: var(--space-lg); background: rgba(255, 255, 255, 0.02); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); margin-bottom: var(--space-md); transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-fast); animation: resultSlideIn 0.3s ease-out backwards; }
.tool-card:hover { border-color: var(--border-hover); background: rgba(129, 140, 248, 0.03); }
.tool-card:nth-child(1) { animation-delay: 0.05s; }
.tool-card:nth-child(2) { animation-delay: 0.10s; }
.tool-card:nth-child(3) { animation-delay: 0.15s; }
.tool-card:nth-child(4) { animation-delay: 0.20s; }
.tool-card:nth-child(5) { animation-delay: 0.25s; }
@keyframes resultSlideIn { from { opacity: 0; transform: translateX(-15px); } to { opacity: 1; transform: translateX(0); } }

.tool-card__icon { font-size: 2rem; flex-shrink: 0; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; background: rgba(129, 140, 248, 0.08); border-radius: var(--radius-md); }
.tool-card__body { flex: 1; min-width: 0; }
.tool-card__header { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-xs); flex-wrap: wrap; }
.tool-card__name { font-size: var(--font-size-lg); font-weight: 700; color: var(--text-primary); }
.tool-card__badge { font-size: var(--font-size-xs); font-weight: 600; padding: 2px 10px; border-radius: var(--radius-full); text-transform: uppercase; letter-spacing: 0.5px; }
.tool-card__badge--free { background: rgba(52, 211, 153, 0.15); color: var(--color-free); border: 1px solid rgba(52, 211, 153, 0.3); }
.tool-card__badge--freemium { background: rgba(251, 191, 36, 0.15); color: var(--color-freemium); border: 1px solid rgba(251, 191, 36, 0.3); }
.tool-card__badge--paid { background: rgba(248, 113, 113, 0.15); color: var(--color-paid); border: 1px solid rgba(248, 113, 113, 0.3); }
.tool-card__function { font-size: var(--font-size-sm); color: var(--text-secondary); margin-bottom: var(--space-sm); line-height: 1.5; }
.tool-card__url { font-size: var(--font-size-xs); color: var(--accent-primary); transition: color var(--transition-fast); word-break: break-all; }
.tool-card__url:hover { color: var(--accent-secondary); text-decoration: underline; }

/* Tool Card Actions Row */
.tool-card__actions { display: flex; gap: var(--space-sm); margin-top: var(--space-md); padding-top: var(--space-sm); border-top: 1px solid var(--border-subtle); }
.tool-card__action-btn { display: flex; align-items: center; gap: var(--space-xs); font-size: var(--font-size-xs); font-weight: 500; padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-sm); border: 1px solid var(--border-subtle); color: var(--text-muted); background: transparent; transition: all var(--transition-fast); cursor: pointer; }
.tool-card__action-btn:hover { border-color: var(--accent-primary); color: var(--accent-primary); background: rgba(129, 140, 248, 0.06); }
.tool-card__action-btn--saved { border-color: var(--color-free); color: var(--color-free); background: rgba(52, 211, 153, 0.06); }
.tool-card__action-btn--saved:hover { border-color: var(--color-paid); color: var(--color-paid); background: rgba(248, 113, 113, 0.06); }

/* ==============================================================
   13. TRENDING CARD
   ============================================================== */
.trending-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.trending-item { display: flex; align-items: center; gap: var(--space-md); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-md); transition: background var(--transition-fast); cursor: pointer; }
.trending-item:hover { background: rgba(255, 255, 255, 0.03); }
.trending-item__rank { font-size: var(--font-size-sm); font-weight: 800; color: var(--text-muted); width: 24px; text-align: center; }
.trending-item__name { font-size: var(--font-size-sm); font-weight: 500; color: var(--text-primary); flex: 1; }
.trending-item__category { font-size: var(--font-size-xs); color: var(--text-muted); padding: 2px 8px; border: 1px solid var(--border-subtle); border-radius: var(--radius-full); }

/* ==============================================================
   14. CATEGORIES CARD & FULL PAGE
   ============================================================== */
.categories-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: var(--space-sm); }
.category-tag { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-md); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); font-size: var(--font-size-sm); color: var(--text-secondary); transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast); cursor: pointer; }
.category-tag:hover { border-color: var(--accent-primary); background: rgba(129, 140, 248, 0.06); color: var(--text-primary); transform: translateY(-1px); }
.category-tag__icon { font-size: var(--font-size-lg); }
.category-tag__count { margin-left: auto; font-size: var(--font-size-xs); color: var(--text-muted); font-weight: 600; }

/* Categories Full Page Grid */
.categories-full-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--space-md); }
.category-full-card { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-lg); padding: var(--space-xl); cursor: pointer; transition: all var(--transition-base); position: relative; overflow: hidden; }
.category-full-card:hover { border-color: var(--border-hover); box-shadow: var(--glow-card-hover); transform: translateY(-3px); }
.category-full-card__icon { font-size: 2.5rem; margin-bottom: var(--space-md); }
.category-full-card__name { font-size: var(--font-size-lg); font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-xs); }
.category-full-card__count { font-size: var(--font-size-sm); color: var(--text-muted); }
.category-full-card__desc { font-size: var(--font-size-sm); color: var(--text-secondary); margin-top: var(--space-sm); line-height: 1.5; }

/* ==============================================================
   15. SAVED TOOLS PAGE
   ============================================================== */
.saved-tools-container { min-height: 200px; }

/* ==============================================================
   16. BUTTONS & ACTIONS
   ============================================================== */
.header__actions { display: flex; align-items: center; gap: var(--space-sm); }
.btn-settings { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-card); border-radius: var(--radius-full); color: var(--text-secondary); transition: all var(--transition-fast); }
.btn-settings:hover { background: rgba(129, 140, 248, 0.15); border-color: var(--accent-primary); color: var(--accent-primary); transform: rotate(45deg); }
.btn-settings--has-key { border-color: var(--color-free); color: var(--color-free); }
.btn-google-signin { display: inline-flex; align-items: center; gap: var(--space-sm); padding: var(--space-sm) var(--space-lg); background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-card); border-radius: var(--radius-full); font-size: var(--font-size-sm); font-weight: 500; color: var(--text-primary); transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast); }
.btn-google-signin:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.2); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); transform: translateY(-1px); }

/* ==============================================================
   17. MODALS (API Key + Legal)
   ============================================================== */
.modal-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.8); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); z-index: 9998; display: none; align-items: center; justify-content: center; padding: var(--space-lg); animation: fadeIn 0.25s ease-out; }
.modal-overlay--visible { display: flex; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal { background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-xl); max-width: 600px; width: 100%; max-height: 90vh; overflow-y: auto; padding: var(--space-2xl); position: relative; animation: modalSlideUp 0.3s ease-out; }
.modal--legal { max-width: 700px; }
@keyframes modalSlideUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.modal__close { position: absolute; top: var(--space-md); right: var(--space-md); width: 36px; height: 36px; border-radius: var(--radius-full); background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-subtle); color: var(--text-muted); font-size: 1.4rem; display: flex; align-items: center; justify-content: center; transition: all var(--transition-fast); }
.modal__close:hover { background: rgba(248, 113, 113, 0.15); border-color: rgba(248, 113, 113, 0.3); color: #f87171; }
.modal__header { text-align: center; margin-bottom: var(--space-xl); }
.modal__icon { font-size: 3rem; margin-bottom: var(--space-md); }
.modal__title { font-size: var(--font-size-xl); font-weight: 800; color: var(--text-primary); margin-bottom: var(--space-sm); }
.modal__subtitle { font-size: var(--font-size-sm); color: var(--text-muted); line-height: 1.6; max-width: 460px; margin: 0 auto; }
.modal__steps { display: flex; flex-direction: column; gap: var(--space-lg); margin-bottom: var(--space-xl); }
.modal__step { display: flex; gap: var(--space-md); align-items: flex-start; }
.modal__step-number { width: 32px; height: 32px; min-width: 32px; background: var(--accent-gradient); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: var(--font-size-sm); color: white; margin-top: 2px; }
.modal__step-content { flex: 1; }
.modal__step-title { font-size: var(--font-size-base); font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.modal__step-desc { font-size: var(--font-size-sm); color: var(--text-secondary); line-height: 1.5; }
.modal__get-key-btn { display: block; text-align: center; padding: var(--space-md) var(--space-lg); background: var(--accent-gradient); color: white; font-size: var(--font-size-base); font-weight: 700; border-radius: var(--radius-md); text-decoration: none; margin-bottom: var(--space-xl); transition: all var(--transition-fast); box-shadow: 0 4px 15px rgba(129, 140, 248, 0.3); }
.modal__get-key-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(129, 140, 248, 0.5); }
.modal__input-section { margin-bottom: var(--space-lg); }
.modal__input-label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--text-secondary); margin-bottom: var(--space-sm); }
.modal__input-row { display: flex; gap: var(--space-sm); }
.modal__input { flex: 1; padding: var(--space-sm) var(--space-md); background: rgba(255, 255, 255, 0.03); border: 1px solid var(--border-card); border-radius: var(--radius-md); color: var(--text-primary); font-size: var(--font-size-sm); font-family: 'Inter', sans-serif; outline: none; transition: border-color var(--transition-fast); }
.modal__input:focus { border-color: var(--accent-primary); }
.modal__input::placeholder { color: var(--text-muted); }
.modal__save-btn { padding: var(--space-sm) var(--space-lg); background: var(--accent-gradient); color: white; font-weight: 700; font-size: var(--font-size-sm); border: none; border-radius: var(--radius-md); cursor: pointer; transition: all var(--transition-fast); white-space: nowrap; }
.modal__save-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(129, 140, 248, 0.4); }
.modal__key-status { margin-top: var(--space-sm); font-size: var(--font-size-sm); min-height: 24px; }
.modal__key-status--success { color: var(--color-free); }
.modal__key-status--error { color: var(--color-paid); }
.modal__privacy { font-size: var(--font-size-xs); color: var(--text-muted); text-align: center; line-height: 1.5; padding: var(--space-md); background: rgba(52, 211, 153, 0.04); border: 1px solid rgba(52, 211, 153, 0.1); border-radius: var(--radius-md); }

/* Legal Modal Body */
.modal__legal-body { text-align: left; }
.modal__legal-body h3 { font-size: var(--font-size-base); font-weight: 700; color: var(--text-primary); margin-top: var(--space-lg); margin-bottom: var(--space-sm); }
.modal__legal-body h3:first-child { margin-top: 0; }
.modal__legal-body p { font-size: var(--font-size-sm); color: var(--text-secondary); line-height: 1.7; margin-bottom: var(--space-sm); }

/* ==============================================================
   18. TOAST NOTIFICATIONS
   ============================================================== */
.toast-container { position: fixed; bottom: var(--space-xl); right: var(--space-xl); z-index: 10000; display: flex; flex-direction: column; gap: var(--space-sm); pointer-events: none; }
.toast { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-md) var(--space-lg); background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-md); box-shadow: 0 8px 32px rgba(0,0,0,0.4); font-size: var(--font-size-sm); color: var(--text-primary); pointer-events: auto; animation: toastIn 0.3s ease-out; max-width: 360px; }
.toast--success { border-color: rgba(52, 211, 153, 0.3); }
.toast--info { border-color: rgba(129, 140, 248, 0.3); }
.toast--error { border-color: rgba(248, 113, 113, 0.3); }
.toast--removing { animation: toastOut 0.3s ease-in forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateX(100px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(100px); } }

/* ==============================================================
   19. SCROLL TO TOP BUTTON
   ============================================================== */
.scroll-top-btn { position: fixed; bottom: var(--space-xl); left: var(--space-xl); z-index: 9000; width: 44px; height: 44px; background: var(--bg-card); border: 1px solid var(--border-card); border-radius: var(--radius-full); color: var(--text-secondary); display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition-base); box-shadow: 0 4px 16px rgba(0,0,0,0.3); }
.scroll-top-btn--visible { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-top-btn:hover { background: var(--accent-primary); color: white; border-color: var(--accent-primary); transform: translateY(-2px); }

/* ==============================================================
   20. FOOTER
   ============================================================== */
.footer { padding: var(--space-xl) 0; border-top: 1px solid var(--border-subtle); text-align: center; }
.footer__content { display: flex; flex-direction: column; align-items: center; gap: var(--space-sm); }
.footer__brand { font-size: var(--font-size-sm); font-weight: 600; color: var(--text-secondary); }
.footer__brand-ai { background: var(--accent-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer__links { display: flex; align-items: center; gap: var(--space-sm); }
.footer__link { font-size: var(--font-size-xs); color: var(--text-muted); transition: color var(--transition-fast); cursor: pointer; background: none; border: none; font-family: inherit; }
.footer__link:hover { color: var(--accent-primary); }
.footer__separator { color: var(--text-muted); font-size: var(--font-size-xs); }
.footer__copy { font-weight: 400; color: var(--text-muted); }
.footer__note { font-size: var(--font-size-xs); color: var(--text-muted); max-width: 500px; line-height: 1.5; }

/* ==============================================================
   21. UTILITY ANIMATIONS
   ============================================================== */
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.skeleton { background: linear-gradient(90deg, var(--bg-card) 25%, rgba(255, 255, 255, 0.04) 50%, var(--bg-card) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); }

/* ==============================================================
   22. RESPONSIVE
   ============================================================== */
@media (max-width: 768px) {
  :root { --font-size-3xl: 2rem; --font-size-4xl: 2.5rem; }
  .dashboard { padding: var(--space-md); }
  .header { flex-direction: column; align-items: stretch; gap: var(--space-md); }
  .header__brand { justify-content: center; }
  .header__nav { justify-content: center; }
  .header__actions { justify-content: center; }
  .bento-grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .bento-card--hero, .bento-card--filter, .bento-card--stats, .bento-card--results, .bento-card--trending, .bento-card--categories { grid-column: 1 / -1; }
  .bento-card--hero { padding: var(--space-2xl) var(--space-lg); }
  .hero__heading { font-size: var(--font-size-2xl); }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
  .tool-card { flex-direction: column; gap: var(--space-md); }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-full-grid { grid-template-columns: 1fr; }
  .toast-container { right: var(--space-md); bottom: var(--space-md); left: var(--space-md); }
  .toast { max-width: 100%; }
  .scroll-top-btn { left: auto; right: var(--space-md); bottom: 80px; }
}
@media (max-width: 480px) {
  :root { --font-size-2xl: 1.5rem; --font-size-3xl: 1.75rem; }
  .hero__chips { gap: var(--space-xs); }
  .chip { font-size: var(--font-size-xs); padding: var(--space-xs) var(--space-sm); }
  .query-bar { padding: var(--space-xs) var(--space-xs) var(--space-xs) var(--space-md); }
  .query-bar__input { font-size: var(--font-size-sm); }
  .filter-group { flex-direction: column; }
  .filter-pill__label { width: 100%; text-align: center; }
  .categories-grid { grid-template-columns: 1fr; }
}