/* ========================================
   ASSISTENTE INSIGHT 360 — Style System
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@500;600;700;800&family=DM+Sans:opsz,wght@9..40,400;9..40,500;9..40,600;9..40,700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Brand palette */
  --bg-deep:        #0a0614;
  --bg-surface:     #110820;
  --bg-elevated:    #1a0e2e;
  --bg-glass:       rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);

  --border:         rgba(255, 255, 255, 0.08);
  --border-strong:  rgba(255, 255, 255, 0.16);

  --text-1:         #f5f0ff;
  --text-2:         rgba(245, 240, 255, 0.72);
  --text-3:         rgba(245, 240, 255, 0.48);
  --text-4:         rgba(245, 240, 255, 0.28);

  --brand-orange:   #ff6a3d;
  --brand-pink:     #ff4b7d;
  --brand-magenta:  #d946a0;

  --grad-brand:     linear-gradient(135deg, #ff6a3d 0%, #ff4b7d 50%, #d946a0 100%);
  --grad-brand-soft: linear-gradient(135deg, rgba(255, 106, 61, 0.15) 0%, rgba(255, 75, 125, 0.15) 50%, rgba(217, 70, 160, 0.15) 100%);

  --shadow-1:       0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-2:       0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow:    0 0 60px rgba(255, 75, 125, 0.15);

  --radius-sm:      8px;
  --radius:         14px;
  --radius-lg:      20px;
  --radius-xl:      28px;

  --easing:         cubic-bezier(0.4, 0, 0.2, 1);
  --easing-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="light"] {
  --bg-deep:        #faf7ff;
  --bg-surface:     #ffffff;
  --bg-elevated:    #ffffff;
  --bg-glass:       rgba(0, 0, 0, 0.025);
  --bg-glass-hover: rgba(0, 0, 0, 0.04);

  --border:         rgba(0, 0, 0, 0.08);
  --border-strong:  rgba(0, 0, 0, 0.14);

  --text-1:         #0a0614;
  --text-2:         rgba(10, 6, 20, 0.7);
  --text-3:         rgba(10, 6, 20, 0.5);
  --text-4:         rgba(10, 6, 20, 0.3);

  --shadow-2:       0 8px 32px rgba(10, 6, 20, 0.08);
  --shadow-glow:    0 0 60px rgba(255, 75, 125, 0.1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-1);
  background: var(--bg-deep);
  min-height: 100dvh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

/* ===========================================
   GRADIENT MESH BACKGROUND (atmosphere/depth)
   =========================================== */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(255, 106, 61, 0.18), transparent 50%),
    radial-gradient(ellipse 60% 40% at 85% 80%, rgba(217, 70, 160, 0.18), transparent 50%),
    radial-gradient(ellipse 70% 60% at 60% 50%, rgba(255, 75, 125, 0.10), transparent 60%);
  pointer-events: none;
}

[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(255, 106, 61, 0.10), transparent 50%),
    radial-gradient(ellipse 60% 40% at 85% 80%, rgba(217, 70, 160, 0.08), transparent 50%);
}

/* Grain overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3CfeColorMatrix values='0 0 0 0 1, 0 0 0 0 1, 0 0 0 0 1, 0 0 0 .15 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.4;
  pointer-events: none;
  mix-blend-mode: overlay;
}

/* ============================
   APP LAYOUT
   ============================ */
.app {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100dvh;
}

/* ============================
   SIDEBAR
   ============================ */
.sidebar {
  display: flex;
  flex-direction: column;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 8px 20px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.sidebar__logo {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  animation: logo-spin 30s linear infinite;
}

@keyframes logo-spin {
  from { transform: rotate(0); }
  to { transform: rotate(360deg); }
}

.sidebar__title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sidebar__subtitle {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 2px;
}

.btn-new {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 11px 14px;
  background: var(--grad-brand);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.2s var(--easing-spring), box-shadow 0.3s var(--easing);
  box-shadow: 0 2px 12px rgba(255, 75, 125, 0.25);
}

.btn-new:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(255, 75, 125, 0.35);
}

.btn-new:active { transform: translateY(0); }

.sidebar__history-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 16px 8px 8px;
}

.history {
  flex: 1;
  overflow-y: auto;
  margin: 0 -8px;
  padding: 0 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.history::-webkit-scrollbar { width: 4px; }
.history::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 2px; }

.history__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 10px;
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s var(--easing);
  position: relative;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history__item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-1);
}

.history__item.is-active {
  background: var(--grad-brand-soft);
  color: var(--text-1);
  border: 1px solid rgba(255, 75, 125, 0.2);
}

.history__delete {
  margin-left: auto;
  background: none;
  border: 0;
  color: var(--text-4);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
}

.history__item:hover .history__delete { opacity: 1; }
.history__delete:hover { color: var(--brand-pink); background: var(--bg-glass); }

.sidebar__footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  margin-top: 12px;
  border-top: 1px solid var(--border);
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.2s var(--easing);
}

.icon-btn:hover {
  background: var(--bg-glass-hover);
  color: var(--text-1);
  border-color: var(--border-strong);
}

.icon-btn svg { width: 16px; height: 16px; }

.user-pill {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 6px 6px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--text-2);
}

.user-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--grad-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.5px;
}

/* ============================
   CHAT MAIN AREA
   ============================ */
.chat {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
}

.chat__title {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--text-1);
  flex: 1;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}

.chat__title-mute {
  color: var(--text-3);
  font-weight: 500;
  font-style: italic;
}

.chat__actions {
  display: flex;
  gap: 8px;
}

.chat__messages {
  flex: 1;
  overflow-y: auto;
  padding: 32px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
  scroll-behavior: smooth;
}

.chat__messages::-webkit-scrollbar { width: 6px; }
.chat__messages::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

/* ============================
   WELCOME SCREEN
   ============================ */
.welcome {
  max-width: 720px;
  margin: 4vh auto 0;
  padding: 40px 32px;
  text-align: center;
  opacity: 0;
  animation: fade-up 0.7s var(--easing) forwards;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.welcome__logo {
  width: 88px;
  height: 88px;
  margin: 0 auto 28px;
  filter: drop-shadow(0 8px 32px rgba(255, 75, 125, 0.25));
  animation: logo-pulse 4s ease-in-out infinite, logo-spin 30s linear infinite;
}

@keyframes logo-pulse {
  0%, 100% { filter: drop-shadow(0 8px 32px rgba(255, 75, 125, 0.25)); }
  50%      { filter: drop-shadow(0 8px 48px rgba(255, 106, 61, 0.45)); }
}

.welcome__title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(36px, 5vw, 52px);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 16px;
  background: linear-gradient(180deg, var(--text-1) 0%, var(--text-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.welcome__title em {
  font-style: normal;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.welcome__lede {
  font-size: 17px;
  color: var(--text-2);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.5;
}

.templates {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  max-width: 580px;
  margin: 0 auto;
}

.template {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 16px 16px 14px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.25s var(--easing);
  overflow: hidden;
  font-family: inherit;
  color: var(--text-1);
}

.template::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-brand-soft);
  opacity: 0;
  transition: opacity 0.25s var(--easing);
  pointer-events: none;
}

.template:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.template:hover::before { opacity: 1; }

.template__icon {
  font-size: 22px;
  margin-bottom: 8px;
  position: relative;
}

.template__title {
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 2px;
  position: relative;
}

.template__desc {
  font-size: 12px;
  color: var(--text-3);
  position: relative;
}

/* ============================
   MESSAGES
   ============================ */
.msg {
  max-width: 760px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: msg-in 0.4s var(--easing);
}

@keyframes msg-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg__role {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 8px;
}

.msg__role-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.msg--user .msg__role-dot { background: var(--text-2); }
.msg--assistant .msg__role-dot {
  background: var(--grad-brand);
  background-image: var(--grad-brand);
  box-shadow: 0 0 12px rgba(255, 75, 125, 0.5);
}

.msg__body {
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-1);
  word-wrap: break-word;
}

.msg--user .msg__body {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}

.msg__body p { margin-bottom: 12px; }
.msg__body p:last-child { margin-bottom: 0; }
.msg__body strong { font-weight: 700; color: var(--text-1); }
.msg__body em { font-style: italic; }
.msg__body h1, .msg__body h2, .msg__body h3 {
  font-family: 'Syne', sans-serif;
  letter-spacing: -0.01em;
  margin: 16px 0 10px;
}
.msg__body h2 { font-size: 22px; font-weight: 700; }
.msg__body h3 { font-size: 18px; font-weight: 600; }
.msg__body ul, .msg__body ol { padding-left: 24px; margin-bottom: 12px; }
.msg__body li { margin-bottom: 4px; }
.msg__body code {
  background: var(--bg-glass-hover);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.msg__body pre {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  overflow-x: auto;
  margin-bottom: 12px;
}
.msg__body pre code { background: transparent; padding: 0; }
.msg__body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}
.msg__body blockquote {
  border-left: 3px solid var(--brand-pink);
  padding-left: 14px;
  color: var(--text-2);
  margin-bottom: 12px;
  font-style: italic;
}

.msg__actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  opacity: 0;
  transition: opacity 0.2s;
}

.msg:hover .msg__actions { opacity: 1; }

.msg__action {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  font-size: 11px;
  font-family: 'DM Sans', sans-serif;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.15s;
}

.msg__action:hover {
  background: var(--bg-glass-hover);
  color: var(--text-1);
  border-color: var(--border-strong);
}

.msg__action svg { width: 12px; height: 12px; }

/* Typing cursor on streaming */
.is-streaming::after {
  content: '▋';
  display: inline-block;
  margin-left: 2px;
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: cursor-blink 1s steps(2) infinite;
}

@keyframes cursor-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Pipeline status (shown during agentflow before tokens arrive) */
.status-bar {
  max-width: 760px;
  margin: 4px auto 0;
  padding: 0 32px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 10px;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-2);
  animation: msg-in 0.3s var(--easing);
}

.status-spinner {
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--border-strong);
  border-top-color: var(--brand-pink);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================
   COMPOSER
   ============================ */
.composer-wrap {
  padding: 0 32px 24px;
  background: linear-gradient(to top, var(--bg-deep) 50%, transparent);
}

.composer {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, box-shadow 0.2s;
  overflow: hidden;
}

.composer:focus-within {
  border-color: rgba(255, 75, 125, 0.4);
  box-shadow: 0 0 0 4px rgba(255, 75, 125, 0.08), var(--shadow-glow);
}

.composer__textarea {
  display: block;
  width: 100%;
  min-height: 56px;
  max-height: 220px;
  padding: 18px 60px 14px 20px;
  background: transparent;
  border: 0;
  outline: 0;
  resize: none;
  color: var(--text-1);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.5;
  font-weight: 400;
}

.composer__textarea::placeholder {
  color: var(--text-4);
}

.composer__bottom {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px 12px;
}

.composer__hint {
  font-size: 11px;
  color: var(--text-4);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.05em;
}

.composer__hint kbd {
  padding: 2px 5px;
  background: var(--bg-glass-hover);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 10px;
  margin: 0 2px;
}

.btn-send {
  margin-left: auto;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-brand);
  border: 0;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s var(--easing-spring);
  box-shadow: 0 2px 10px rgba(255, 75, 125, 0.3);
}

.btn-send:hover:not(:disabled) {
  transform: scale(1.05) rotate(2deg);
  box-shadow: 0 6px 20px rgba(255, 75, 125, 0.4);
}

.btn-send:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
}

.btn-send svg { width: 16px; height: 16px; }

/* ============================
   EMPTY STATE FOR HISTORY
   ============================ */
.history__empty {
  font-size: 12px;
  color: var(--text-4);
  font-style: italic;
  padding: 8px 10px;
  text-align: center;
}

/* ============================
   MOBILE
   ============================ */
@media (max-width: 768px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 280px;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s var(--easing);
  }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
  }
  .sidebar.is-open ~ .sidebar-overlay { display: block; }
  .chat__header { padding: 14px 16px; }
  .msg, .composer-wrap, .status-bar { padding-left: 16px; padding-right: 16px; }
  .welcome { padding: 24px 16px; }
}

/* ============================
   UTILS
   ============================ */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

.menu-toggle {
  display: none;
}

@media (max-width: 768px) {
  .menu-toggle { display: inline-flex; }
}