/* =========================================
   SM-AILIB — COMPLETE WEBSITE STYLESHEET
   ========================================= */

:root {
  --bg: #090910;
  --bg-soft: #0e0e18;
  --card: #11111c;
  --card-hover: #171725;
  --border: #29293a;
  --text: #f4f3ff;
  --muted: #9998ac;
  --purple: #a78bfa;
  --purple-dark: #7652e8;
  --cyan: #67e8f9;
  --green: #68e6a5;
  --radius: 16px;
  --max-width: 1160px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

button,
a {
  font: inherit;
}

button {
  color: inherit;
}

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

::selection {
  color: white;
  background: var(--purple-dark);
}

/* SCROLLBAR */

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

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

::-webkit-scrollbar-thumb {
  background: #37334d;
  border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--purple-dark);
}

/* NAVIGATION */

.nav {
  width: 100%;
  height: 76px;
  padding: 0 7%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(9, 9, 16, 0.78);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(18px);
  transition: 0.3s ease;
}

.nav.scrolled {
  height: 66px;
  border-bottom-color: var(--border);
  background: rgba(9, 9, 16, 0.96);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.7px;
  white-space: nowrap;
}

.logo-icon {
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: linear-gradient(135deg, #7652e8, #38bdf8);
  color: white;
  font-size: 19px;
  font-weight: 800;
}

.logo-dot {
  color: var(--purple);
  margin-left: -8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  transition: 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
}

.nav-github {
  padding: 9px 17px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 700;
  transition: 0.2s;
}

.nav-github:hover {
  background: #211b37;
  border-color: var(--purple);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 0;
  font-size: 25px;
  cursor: pointer;
}

/* HERO */

.hero {
  min-height: 750px;
  max-width: 1400px;
  margin: auto;
  padding: 155px 8% 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 550px;
  height: 550px;
  top: 80px;
  left: 10%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(124, 77, 255, 0.16),
    transparent 70%
  );
  filter: blur(20px);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid #34304b;
  border-radius: 50px;
  background: rgba(124, 77, 255, 0.08);
  color: #c4b5fd;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 1.2px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
}

.hero h1 {
  margin: 25px 0;
  font-size: clamp(55px, 7vw, 88px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -5px;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(
    100deg,
    #c4b5fd 0%,
    #a78bfa 40%,
    #67e8f9 100%
  );
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-description {
  max-width: 510px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 32px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  transition: 0.25s;
}

.btn-primary {
  background: linear-gradient(110deg, #7652e8, #5c42c8);
  color: white;
  box-shadow: 0 8px 30px rgba(118, 82, 232, 0.22);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(118, 82, 232, 0.4);
}

.btn-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.025);
}

.btn-secondary:hover {
  border-color: var(--purple);
  background: #191526;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 35px;
  color: #89889b;
  font-size: 11px;
}

/* TERMINAL */

.hero-visual {
  position: relative;
  z-index: 2;
}

.terminal-window {
  max-width: 510px;
  margin-left: auto;
  overflow: hidden;
  border: 1px solid #343147;
  border-radius: 15px;
  background: #0d0d17;
  box-shadow:
    0 25px 80px rgba(0, 0, 0, 0.4),
    0 0 60px rgba(118, 82, 232, 0.09);
  transform: rotate(1deg);
}

.terminal-header {
  height: 45px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  color: #77768b;
  font-family: "DM Mono", monospace;
  font-size: 11px;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #f87171;
}

.terminal-dots i:nth-child(2) {
  background: #fbbf24;
}

.terminal-dots i:nth-child(3) {
  background: #4ade80;
}

.terminal-body {
  padding: 25px;
  font-family: "DM Mono", monospace;
  font-size: 12px;
  line-height: 2;
}

.terminal-purple {
  color: #c4b5fd;
}

.terminal-green {
  color: #67e8a5;
}

.terminal-muted {
  color: #77768b;
  padding-left: 20px;
}

.terminal-success {
  color: #68e6a5;
  padding-left: 20px;
}

.terminal-cursor {
  color: var(--cyan);
  animation: blink 1s infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* GENERAL SECTIONS */

.section {
  max-width: var(--max-width);
  margin: auto;
  padding: 105px 30px;
}

.section-heading {
  max-width: 700px;
  margin: 0 auto 55px;
  text-align: center;
}

.eyebrow {
  color: var(--purple);
  font-family: "DM Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 2.5px;
}

.section-heading h2 {
  margin: 14px 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.2;
  letter-spacing: -1.8px;
}

.section-heading p {
  color: var(--muted);
  font-size: 14px;
}

/* FEATURES */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  min-height: 285px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #131320, #0e0e17);
  transition: 0.3s;
}

.feature-card:hover {
  transform: translateY(-7px);
  border-color: #6450a2;
  background: var(--card-hover);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 25px;
  border-radius: 13px;
  background: #211b36;
  font-size: 23px;
}

.feature-number {
  color: #8e7bc5;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 1px;
}

.feature-card h3 {
  margin: 9px 0;
  font-size: 20px;
}

.feature-card p {
  min-height: 75px;
  margin-bottom: 15px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.feature-card code {
  display: inline-block;
  margin: 4px 4px 0 0;
  padding: 5px 8px;
  border: 1px solid #333047;
  border-radius: 6px;
  background: #0b0b13;
  color: #bba8ff;
  font-family: "DM Mono", monospace;
  font-size: 10px;
}

/* MODES */

.modes-section {
  max-width: none;
  padding-left: max(30px, calc((100% - var(--max-width)) / 2));
  padding-right: max(30px, calc((100% - var(--max-width)) / 2));
  background: linear-gradient(180deg, #0d0d17, #10101b, #0d0d17);
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: var(--max-width);
  margin: auto;
}

.mode-card {
  padding: 23px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: #11111b;
  transition: 0.25s;
}

.mode-card:hover {
  transform: translateY(-4px);
  border-color: #6550a5;
}

.mode-id {
  color: #a78bfa;
  font-family: "DM Mono", monospace;
  font-size: 10px;
  letter-spacing: 1px;
}

.mode-card h3 {
  margin: 12px 0 4px;
  font-size: 17px;
}

.mode-card strong {
  display: inline-block;
  margin-top: 8px;
  font-size: 32px;
  letter-spacing: -1px;
}

.mode-card small {
  margin-left: 5px;
  color: var(--muted);
  font-size: 11px;
}

.mode-card p {
  margin: 10px 0 15px;
  color: var(--muted);
  font-size: 12px;
}

.mode-card code {
  color: #c4b5fd;
  font-family: "DM Mono", monospace;
  font-size: 11px;
}

.featured-mode {
  border-color: #8060e8;
  background: linear-gradient(145deg, #211a38, #131320);
  box-shadow: 0 0 35px rgba(118, 82, 232, 0.08);
}

/* COMMANDS */

.command-list {
  max-width: 850px;
  margin: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: #101019;
}

.command-item {
  min-height: 90px;
  padding: 19px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  border-bottom: 1px solid var(--border);
}

.command-item:last-child {
  border-bottom: 0;
}

.command-item code {
  color: #c4b5fd;
  font-family: "DM Mono", monospace;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.command-item p {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.small-note {
  max-width: 850px;
  margin: 15px auto 0;
  color: #77768b;
  font-size: 11px;
}

/* COPY BUTTONS */

.copy-command {
  flex-shrink: 0;
  padding: 8px 13px;
  border: 1px solid #373149;
  border-radius: 7px;
  background: #211b32;
  color: #c4b5fd;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s;
}

.copy-command:hover {
  background: #49337c;
  border-color: #8b6cf0;
  color: white;
}

.copy-command:active {
  transform: scale(0.96);
}

/* INSTALLATION */

.install-section {
  max-width: 1050px;
}

.install-card {
  max-width: 760px;
  margin: auto;
  padding: 25px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(145deg, #141420, #0e0e17);
}

.install-tabs {
  display: flex;
  gap: 10px;
  padding-bottom: 17px;
  margin-bottom: 25px;
  border-bottom: 1px solid var(--border);
}

.install-tab {
  padding: 11px 18px;
  border: 1px solid #333044;
  border-radius: 9px;
  background: #191925;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.install-tab:hover {
  border-color: var(--purple);
  color: white;
}

.install-tab.active {
  border-color: #8060e8;
  background: #33245b;
  color: white;
}

.install-content {
  display: none;
}

.install-content.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

.install-content h3 {
  margin-bottom: 7px;
  font-size: 23px;
}

.install-content > p {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 13px;
}

.command-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  margin: 13px 0;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: #090910;
}

.command-box code {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  color: #c4b5fd;
  font-family: "DM Mono", monospace;
  font-size: 12px;
  white-space: nowrap;
}

.install-content > a {
  display: inline-block;
  margin-top: 15px;
  color: var(--cyan);
  font-size: 12px;
}

.install-note {
  padding: 13px;
  border-left: 3px solid var(--purple);
  border-radius: 5px;
  background: #191526;
  color: #c2bbd7 !important;
  font-size: 12px !important;
  line-height: 1.7;
}

.github-link {
  display: block;
  width: fit-content;
  margin: 28px auto 0;
  padding: 12px 20px;
  border: 1px solid #514078;
  border-radius: 9px;
  background: #211b32;
  font-size: 13px;
  font-weight: 700;
  transition: 0.2s;
}

.github-link:hover {
  background: #49337c;
}

/* FAQ */

.faq-section {
  max-width: 900px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 19px 22px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: #11111b;
}

.faq-item summary {
  position: relative;
  padding-right: 25px;
  list-style: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -4px;
  color: var(--purple);
  font-size: 23px;
  transition: 0.2s;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  padding-top: 14px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  animation: fadeIn 0.25s ease;
}

/* FINAL CTA */

.final-cta {
  position: relative;
  max-width: 1050px;
  margin: 40px auto 100px;
  padding: 75px 25px;
  overflow: hidden;
  border: 1px solid #3d315f;
  border-radius: 20px;
  background: linear-gradient(120deg, #171326, #111c2a);
  text-align: center;
}

.cta-glow {
  position: absolute;
  width: 350px;
  height: 350px;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.18);
  filter: blur(70px);
  pointer-events: none;
}

.final-cta > *:not(.cta-glow) {
  position: relative;
  z-index: 1;
}

.final-cta h2 {
  margin: 15px 0 8px;
  font-size: clamp(30px, 5vw, 45px);
  letter-spacing: -1.5px;
}

.final-cta p {
  margin-bottom: 25px;
  color: var(--muted);
  font-size: 14px;
}

/* FOOTER */

.footer {
  padding: 45px 7% 25px;
  border-top: 1px solid var(--border);
  background: #08080e;
  text-align: center;
}

.footer .logo {
  justify-content: center;
}

.footer > p {
  margin: 13px 0 20px;
  color: var(--muted);
  font-size: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-bottom: 25px;
}

.footer-links a {
  color: #aaa8ba;
  font-size: 12px;
}

.footer-links a:hover {
  color: var(--purple);
}

.copyright {
  color: #676578;
  font-size: 11px;
}

/* BACK TO TOP */

#backToTop {
  position: fixed;
  right: 25px;
  bottom: 25px;
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  border: 1px solid #514078;
  border-radius: 11px;
  background: #211b32;
  color: white;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.25s;
  z-index: 900;
}

#backToTop.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#backToTop:hover {
  background: #49337c;
}

/* ANIMATIONS */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(7px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* RESPONSIVE TABLET */

@media (max-width: 950px) {
  .nav {
    padding: 0 5%;
  }

  .nav-links {
    gap: 17px;
  }

  .hero {
    padding-left: 6%;
    padding-right: 6%;
    gap: 30px;
  }

  .hero h1 {
    font-size: 65px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mode-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* RESPONSIVE MOBILE */

@media (max-width: 700px) {
  html {
    scroll-padding-top: 75px;
  }

  .nav {
    height: 66px;
    padding: 0 20px;
  }

  .nav.scrolled {
    height: 62px;
  }

  .nav-github {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--border);
    background: #0d0d17;
  }

  .nav-links.open {
    display: flex;
    animation: fadeIn 0.2s ease;
  }

  .nav-links a {
    padding: 13px 8px;
    border-bottom: 1px solid #20202d;
  }

  .nav-links a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: auto;
    padding: 125px 23px 75px;
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .hero h1 {
    font-size: clamp(53px, 14vw, 75px);
    letter-spacing: -3px;
  }

  .hero-description {
    font-size: 14px;
  }

  .hero-meta {
    gap: 12px;
    font-size: 10px;
  }

  .terminal-window {
    max-width: 100%;
    transform: none;
  }

  .terminal-body {
    padding: 20px;
    font-size: 11px;
  }

  .section {
    padding: 75px 20px;
  }

  .section-heading {
    margin-bottom: 35px;
  }

  .section-heading h2 {
    font-size: 32px;
  }

  .feature-grid,
  .mode-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: auto;
  }

  .feature-card p {
    min-height: auto;
  }

  .modes-section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .command-item {
    padding: 16px;
  }

  .command-item code {
    font-size: 11px;
  }

  .install-card {
    padding: 17px;
  }

  .install-tabs {
    flex-direction: column;
  }

  .install-tab {
    width: 100%;
  }

  .command-box {
    padding: 11px;
    gap: 8px;
  }

  .command-box code {
    font-size: 10px;
  }

  .final-cta {
    margin: 15px 15px 70px;
    padding: 55px 18px;
  }

  .footer {
    padding: 38px 20px 22px;
  }
}

/* SMALL PHONES */

@media (max-width: 380px) {
  .hero h1 {
    font-size: 48px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .command-item {
    align-items: flex-start;
  }

  .copy-command {
    padding: 7px 9px;
  }
}

/* REDUCED MOTION */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}