:root {
  --grad: linear-gradient(135deg, #ef4444 0%, #f97316 45%, #a855f7 100%);
}

* { -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }

/* Animated gradient background blobs */
.bg-aurora::before,
.bg-aurora::after {
  content: "";
  position: fixed;
  border-radius: 9999px;
  filter: blur(90px);
  opacity: .35;
  z-index: 0;
  pointer-events: none;
}
.bg-aurora::before {
  width: 420px; height: 420px;
  background: radial-gradient(circle, #ef4444, transparent 70%);
  top: -120px; left: -100px;
  animation: float1 14s ease-in-out infinite;
}
.bg-aurora::after {
  width: 460px; height: 460px;
  background: radial-gradient(circle, #a855f7, transparent 70%);
  bottom: -160px; right: -120px;
  animation: float2 18s ease-in-out infinite;
}
@keyframes float1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(60px,40px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-50px,-40px)} }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.gradient-bg { background: var(--grad); }
.gradient-border {
  position: relative;
  background: var(--grad);
  padding: 1px;
  border-radius: 16px;
}

.glass {
  background: rgba(26, 26, 40, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.06);
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a2a3d; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a52; }

/* Chip / option buttons */
.chip {
  transition: all .18s ease;
  border: 1px solid rgba(255,255,255,0.08);
}
.chip:hover { border-color: rgba(255,255,255,0.25); transform: translateY(-1px); }
.chip.active {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 20px -6px rgba(239,68,68,.6);
}

/* Toggle */
.toggle-track {
  width: 48px; height: 28px; border-radius: 9999px;
  background: #2a2a3d; transition: background .2s ease; position: relative; flex: none;
}
.toggle-track.on { background: var(--grad); }
.toggle-thumb {
  position: absolute; top: 3px; left: 3px;
  width: 22px; height: 22px; border-radius: 9999px; background: #fff;
  transition: transform .2s ease;
}
.toggle-track.on .toggle-thumb { transform: translateX(20px); }

/* Spinner */
.spinner {
  width: 44px; height: 44px;
  border: 4px solid rgba(255,255,255,.12);
  border-top-color: #ef4444;
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.fade-in { animation: fadeIn .4s ease both; }
@keyframes fadeIn { from { opacity:0; transform: translateY(8px);} to {opacity:1; transform:none;} }

/* Sidebar mobile drawer */
@media (max-width: 1023px) {
  #sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 50;
    transform: translateX(-100%); transition: transform .3s ease;
  }
  #sidebar.open { transform: translateX(0); }
}

.shimmer {
  background: linear-gradient(90deg, #1a1a28 25%, #252538 50%, #1a1a28 75%);
  background-size: 200% 100%;
  animation: shimmer 1.3s infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ============ Advanced tool form controls ============ */
.form-field { transition: border-color .15s ease, box-shadow .15s ease; }
.form-field:focus { box-shadow: 0 0 0 3px rgba(168,85,247,.15); }

/* Styled select dropdown */
.select-wrap { position: relative; }
.select-arrow {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  font-size: 11px; color: #94a3b8; pointer-events: none;
}
select.form-field option { background: #1a1a28; color: #e2e8f0; }

/* Range slider */
.range-field {
  -webkit-appearance: none; appearance: none;
  height: 6px; border-radius: 9999px;
  background: #2a2a3d; outline: none; cursor: pointer;
}
.range-field::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--grad); cursor: pointer;
  box-shadow: 0 2px 8px -1px rgba(239,68,68,.6);
  border: 2px solid #fff;
}
.range-field::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: #f97316; cursor: pointer; border: 2px solid #fff;
}

/* Multiselect chips */
.ms-chip { transition: all .15s ease; }
.ms-chip:active { transform: scale(.96); }

/* Tool result block formatting */
.tool-block strong.block { font-size: .95rem; }
.tool-block { white-space: normal; }

/* Sidebar category body subtle indent line */
.cat-body { border-left: 1px solid rgba(255,255,255,.05); margin-left: 14px; padding-left: 4px; }

/* ---------------------------------------------------------------------------
   Accordion slide animation (sidebar). Bodies start collapsed and slide open
   smoothly when .open is toggled — purely via CSS, no DOM re-render. This is
   what makes the categories/tools "slide down in place" without the sidebar
   closing.
--------------------------------------------------------------------------- */
.acc-body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .35s cubic-bezier(.4,0,.2,1), opacity .25s ease, margin .25s ease;
}
.acc-body.open {
  /* large enough to fit the longest list (10 categories / 5 tools each) */
  max-height: 2400px;
  opacity: 1;
}

/* Chevron rotation */
.acc-chevron {
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.acc-chevron.rotate-90 {
  transform: rotate(90deg);
}

/* Platform master accordion body — a touch of breathing room when open */
.platform-body.open { margin-top: .25rem; }

/* Multi-line clamp for home-page tool descriptions */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =========================================================================
   PROFESSIONAL AI CHAT (ChatGPT / Claude / Gemini style)
   ========================================================================= */
.chat-shell {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;            /* allow inner scroll */
}

/* scrollable conversation */
.chat-scroll {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
}
.chat-scroll::-webkit-scrollbar { width: 8px; }
.chat-scroll::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 8px; }

.chat-thread {
  max-width: 768px;
  margin: 0 auto;
  padding: 24px 16px 8px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* one message row */
.chat-row { display: flex; gap: 12px; align-items: flex-start; }
.chat-row-user { justify-content: flex-end; }

/* AI avatar */
.chat-avatar {
  width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  color: #fff; font-size: 13px; flex-shrink: 0;
  box-shadow: 0 4px 12px -2px rgba(0,0,0,.5);
  margin-top: 2px;
}

/* AI message block (no bubble — clean prose, like Claude/ChatGPT) */
.chat-ai-block { min-width: 0; flex: 1; max-width: 100%; }
.chat-ai-name { font-size: 12.5px; font-weight: 700; color: #e2e8f0; margin-bottom: 4px; }
.chat-ai-prose {
  font-size: 14.5px; line-height: 1.7; color: #cbd5e1;
  word-wrap: break-word;
}
.chat-ai-prose strong { color: #f1f5f9; }
.chat-ai-prose strong.block { display:block; margin: 12px 0 4px; font-size: 14.5px; color:#f8fafc; }

/* copy button under AI message */
.chat-copy-btn {
  margin-top: 10px;
  font-size: 11px; color: #94a3b8;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 8px; padding: 4px 10px;
  display: inline-flex; align-items: center; gap: 5px;
  transition: all .15s ease; cursor: pointer;
}
.chat-copy-btn:hover { color: #e2e8f0; background: rgba(255,255,255,.08); }

/* user message — subtle pill on the right */
.chat-user-bubble {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.08);
  color: #f1f5f9;
  border-radius: 18px 18px 4px 18px;
  padding: 11px 15px;
  max-width: 80%;
  font-size: 14.5px; line-height: 1.6;
  white-space: pre-wrap; word-wrap: break-word;
}
.chat-user-img { border-radius: 12px; margin-bottom: 8px; max-height: 180px; display:block; }

/* typing indicator */
.chat-typing { display: flex; gap: 5px; align-items: center; padding: 8px 2px; }
.chat-typing span {
  width: 7px; height: 7px; border-radius: 50%;
  background: #64748b; opacity: .6;
  animation: chatBounce 1.2s infinite ease-in-out;
}
.chat-typing span:nth-child(2) { animation-delay: .15s; }
.chat-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes chatBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: .4; }
  30% { transform: translateY(-5px); opacity: 1; }
}

/* ---- welcome / empty state ---- */
.chat-welcome {
  max-width: 680px; margin: 0 auto;
  text-align: center;
  padding: 8vh 8px 16px;
  display: flex; flex-direction: column; align-items: center;
}
.chat-welcome-avatar {
  width: 60px; height: 60px; border-radius: 18px;
  display: grid; place-items: center; color: #fff; font-size: 26px;
  box-shadow: 0 10px 30px -6px rgba(0,0,0,.5);
  margin-bottom: 18px;
}
.chat-welcome-title { font-size: 26px; font-weight: 800; color: #f8fafc; line-height: 1.2; }
.chat-welcome-sub { font-size: 14px; color: #94a3b8; margin-top: 8px; max-width: 460px; }
.chat-starters {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px;
  margin-top: 28px; width: 100%; max-width: 560px;
}
@media (max-width: 560px) { .chat-starters { grid-template-columns: 1fr; } }
.chat-starter {
  text-align: left;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 14px; padding: 13px 14px;
  font-size: 13.5px; color: #cbd5e1;
  display: flex; align-items: center; gap: 10px;
  transition: all .18s ease; cursor: pointer;
}
.chat-starter:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); transform: translateY(-1px); }
.chat-starter-arrow { color: #64748b; font-size: 12px; transition: transform .18s ease; }
.chat-starter:hover .chat-starter-arrow { transform: translateX(3px); color: #e2e8f0; }

/* ---- composer (floating, pinned at bottom) ---- */
.chat-composer-wrap {
  flex-shrink: 0;
  padding: 8px 16px max(16px, env(safe-area-inset-bottom));
  background: linear-gradient(to top, rgba(10,10,18,.95), rgba(10,10,18,.6) 70%, transparent);
}
.chat-composer {
  max-width: 768px; margin: 0 auto;
  background: rgba(28,28,40,.9);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 22px;
  padding: 8px 8px 8px 10px;
  box-shadow: 0 8px 30px -8px rgba(0,0,0,.6);
  transition: border-color .2s ease;
}
.chat-composer:focus-within { border-color: rgba(255,255,255,.28); }
.chat-model-row {
  display: flex; align-items: center; gap: 6px;
  padding: 2px 6px 8px 6px; margin-bottom: 4px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.chat-model-icon { color: #818cf8; font-size: 12px; flex-shrink: 0; }
.chat-model-select {
  appearance: none; -webkit-appearance: none;
  background: rgba(255,255,255,.05);
  color: #c7d2fe; border: 1px solid rgba(255,255,255,.12);
  border-radius: 9px; padding: 4px 26px 4px 10px;
  font-size: 12px; font-weight: 600; cursor: pointer; outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath d='M1 3l4 4 4-4' stroke='%23818cf8' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 9px center;
  transition: border-color .15s ease, background .15s ease;
}
.chat-model-select:hover { border-color: rgba(129,140,248,.5); }
.chat-model-select option { background: #1c1c28; color: #e2e8f0; }
.chat-input-row { display: flex; align-items: flex-end; gap: 8px; }
.chat-icon-btn {
  width: 38px; height: 38px; flex-shrink: 0;
  display: grid; place-items: center; border-radius: 12px;
  color: #94a3b8; background: transparent; transition: all .15s ease; cursor: pointer;
}
.chat-icon-btn:hover { color: #e2e8f0; background: rgba(255,255,255,.06); }
.chat-textarea {
  flex: 1; resize: none; border: none; outline: none;
  background: transparent; color: #f1f5f9;
  font-size: 15px; line-height: 1.5;
  padding: 8px 4px; max-height: 160px; min-height: 24px;
}
.chat-textarea::placeholder { color: #64748b; }
.chat-send-btn {
  width: 38px; height: 38px; flex-shrink: 0;
  display: grid; place-items: center; border-radius: 12px;
  color: #fff; font-size: 15px; cursor: pointer;
  box-shadow: 0 4px 12px -2px rgba(0,0,0,.5);
  transition: transform .12s ease, opacity .15s ease;
}
.chat-send-btn:hover { opacity: .92; }
.chat-send-btn:active { transform: scale(.92); }
.chat-attach-preview {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.05); border-radius: 12px;
  padding: 6px 8px; margin: 0 0 8px; width: fit-content;
  font-size: 12px; color: #cbd5e1;
}
.chat-attach-preview img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.chat-attach-preview button { color: #f87171; padding: 2px 4px; cursor: pointer; }
.chat-disclaimer {
  text-align: center; font-size: 11px; color: #64748b;
  margin-top: 8px;
}

/* chat prose: list items & inline code */
.chat-ai-prose .chat-li { display: flex; gap: 8px; margin: 4px 0; align-items: flex-start; }
.chat-ai-prose .chat-bullet { color: #f97316; flex-shrink: 0; line-height: 1.7; }
.chat-ai-prose .chat-num { color: #f97316; font-weight: 600; flex-shrink: 0; line-height: 1.7; min-width: 18px; }
.chat-code {
  background: rgba(255,255,255,.08); border-radius: 6px;
  padding: 1px 6px; font-size: 13px; font-family: ui-monospace, monospace; color: #fbbf24;
}

/* required-field validation error highlight */
.field-error {
  border-color: #ec4899 !important;
  box-shadow: 0 0 0 3px rgba(236,72,153,.18) !important;
  animation: shake 0.3s ease;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* ---- Auth + Landing helpers ---- */
.grad-brand { background: var(--grad); }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.grad-card {
  background: rgba(26, 26, 40, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.scroll-mt-20 { scroll-margin-top: 5rem; }

/* ---- Robust responsive: graceful even in Chrome "Desktop site" mode ---- *
 * When users force desktop mode on a phone, the browser reports a wide
 * viewport and ignores width=device-width. We keep everything fluid, prevent
 * any horizontal overflow, and cap hero text so it never looks broken. */
html, body { max-width: 100%; overflow-x: hidden; }
* { min-width: 0; }
img, video, canvas { max-width: 100%; height: auto; }
/* Make long words / URLs wrap instead of forcing horizontal scroll */
p, h1, h2, h3, li, a, span, label { overflow-wrap: anywhere; }
/* On very small physical widths, soften the big hero type */
@media (max-width: 380px) {
  .grad-text, h1 { font-size: clamp(1.8rem, 9vw, 2.5rem) !important; line-height: 1.1; }
}

/* ---- Hero "Start Free Trial" CTA — bold red + colorful gradient with shine + glow ---- */
.cta-trial {
  position: relative;
  overflow: hidden;
  background: linear-gradient(110deg, #ff1e56 0%, #ff5e3a 35%, #ff2d78 70%, #b829ff 100%);
  background-size: 200% 100%;
  box-shadow: 0 10px 30px -6px rgba(255, 45, 95, 0.55),
              0 0 0 1px rgba(255, 255, 255, 0.08) inset;
  animation: ctaGradient 6s ease infinite;
}
.cta-trial:hover {
  box-shadow: 0 14px 38px -6px rgba(255, 45, 95, 0.7),
              0 0 0 1px rgba(255, 255, 255, 0.14) inset;
}
@keyframes ctaGradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
/* Sweeping shine */
.cta-trial::after {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 60%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.45), transparent);
  transform: skewX(-20deg);
  animation: ctaShine 3.5s ease-in-out infinite;
}
@keyframes ctaShine {
  0%   { left: -120%; }
  55%  { left: 140%; }
  100% { left: 140%; }
}