/* ============================================================
   style.css — Insta AI Guru PRO
   Premium Dark UI | Glassmorphism | SEO-Optimized Structure
   ============================================================ */

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

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  --clr-bg:         #07070a;
  --clr-bg2:        #0f0f14;
  --clr-surface:    rgba(18, 18, 26, 0.75);
  --clr-border:     rgba(255, 255, 255, 0.07);
  --clr-red:        #e60023;
  --clr-red-soft:   rgba(230, 0, 35, 0.18);
  --clr-red-glow:   rgba(230, 0, 35, 0.35);
  --clr-text:       #f0f0f5;
  --clr-muted:      #8888a0;
  --clr-white:      #ffffff;
  --radius-sm:      8px;
  --radius-md:      14px;
  --radius-lg:      22px;
  --transition:     all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-head:      'Syne', sans-serif;
  --font-body:      'DM Sans', sans-serif;
  --shadow-panel:   0 8px 40px rgba(0,0,0,0.45);
}

/* Light Mode Variables */
body.light-mode {
  --clr-bg:        #f2f2f7;
  --clr-bg2:       #ffffff;
  --clr-surface:   rgba(255,255,255,0.8);
  --clr-border:    rgba(0,0,0,0.09);
  --clr-red-soft:  rgba(230,0,35,0.09);
  --clr-red-glow:  rgba(230,0,35,0.2);
  --clr-text:      #111118;
  --clr-muted:     #60607a;
  --shadow-panel:  0 8px 40px rgba(0,0,0,0.10);
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--font-body); }
select, input, textarea { font-family: var(--font-body); }

/* ── Background FX ────────────────────────────────────────── */
.mesh-bg {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
body.light-mode .mesh-bg {
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
}

.bg-glow {
  position: fixed; top: -20%; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 500px;
  background: radial-gradient(ellipse, var(--clr-red-glow) 0%, transparent 70%);
  filter: blur(80px); z-index: -1; pointer-events: none; opacity: 0.5;
}
body.light-mode .bg-glow { opacity: 0.18; }

/* ── Glassmorphism Panel ──────────────────────────────────── */
.glass-panel {
  background: var(--clr-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
}

/* ── Typography ───────────────────────────────────────────── */
h1,h2,h3,h4 { font-family: var(--font-head); font-weight: 800; line-height: 1.15; }

.text-gradient {
  background: linear-gradient(135deg, var(--clr-white) 30%, var(--clr-muted) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-red { color: var(--clr-red); }
.text-muted { color: var(--clr-muted); }

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 900;
  padding: 1.4rem 5%;
  display: flex; align-items: center; justify-content: space-between;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(7,7,10,0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--clr-border);
  padding: 0.9rem 5%;
}
body.light-mode .navbar.scrolled {
  background: rgba(242,242,247,0.92);
}

.nav-brand {
  font-family: var(--font-head);
  font-size: 1.45rem; font-weight: 800;
  display: flex; align-items: center; gap: 0.45rem;
  letter-spacing: -0.5px;
}
.nav-brand i { color: var(--clr-red); font-size: 1.2rem; }
.nav-brand span { color: var(--clr-red); }

.nav-links {
  display: flex; gap: 2rem; align-items: center;
}
.nav-link {
  font-size: 0.92rem; font-weight: 500; position: relative;
  color: var(--clr-muted); transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--clr-text); }
.nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--clr-red);
  transition: var(--transition); border-radius: 2px;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 0.8rem; }

.credit-badge {
  display: flex; align-items: center; gap: 0.4rem;
  background: var(--clr-red-soft);
  border: 1px solid rgba(230,0,35,0.25);
  border-radius: 20px;
  padding: 0.38rem 0.85rem;
  font-size: 0.82rem; font-weight: 600;
  color: var(--clr-text);
  font-family: var(--font-head);
}
.credit-badge i { color: var(--clr-red); font-size: 0.78rem; }

.theme-toggle-btn {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem; transition: var(--transition);
}
.theme-toggle-btn:hover { border-color: var(--clr-red); color: var(--clr-red); }

.mobile-menu-btn {
  display: none; background: none; border: none;
  color: var(--clr-text); font-size: 1.4rem; z-index: 901;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.78rem 1.7rem; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.97rem;
  border: none; outline: none; transition: var(--transition);
  font-family: var(--font-head);
  position: relative; overflow: hidden;
}

.btn-primary {
  background: var(--clr-red); color: #fff;
  box-shadow: 0 0 20px var(--clr-red-glow);
}
.btn-primary:hover {
  background: #ff1f3d;
  box-shadow: 0 0 32px var(--clr-red-glow);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  background: transparent; color: var(--clr-text);
  border: 1px solid var(--clr-border);
}
.btn-secondary:hover {
  border-color: var(--clr-red);
  color: var(--clr-red);
  transform: translateY(-2px);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 9rem 5% 5rem;
  position: relative; overflow: hidden;
}

.hero-content {
  max-width: 820px; margin: 0 auto;
  text-align: center; position: relative; z-index: 2;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--clr-red-soft);
  border: 1px solid rgba(230,0,35,0.3);
  border-radius: 30px;
  color: var(--clr-red); font-weight: 700;
  font-size: 0.8rem; letter-spacing: 1.5px;
  padding: 0.45rem 1.1rem; margin-bottom: 1.6rem;
  font-family: var(--font-head);
  text-transform: uppercase;
}
.hero-badge::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: var(--clr-red);
  animation: pulse-dot 1.5s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:0.5; transform:scale(0.7); }
}

.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 5.2rem);
  letter-spacing: -2px; margin-bottom: 1.4rem;
  line-height: 1.08;
}

.hero p {
  font-size: clamp(1rem, 1.8vw, 1.22rem);
  color: var(--clr-muted);
  margin-bottom: 2.5rem;
  max-width: 580px; margin-inline: auto;
  margin-bottom: 2.5rem;
}

.hero-btns {
  display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap;
}

/* Stats bar */
.hero-stats {
  display: flex; justify-content: center; gap: 3rem;
  margin-top: 4rem; padding-top: 2rem;
  border-top: 1px solid var(--clr-border);
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--font-head);
  font-size: 1.8rem; font-weight: 800;
  color: var(--clr-text); display: block;
}
.stat-label { font-size: 0.8rem; color: var(--clr-muted); }

/* Floating Elements */
.floating-elements {
  position: absolute; inset: 0;
  pointer-events: none; z-index: 1; overflow: hidden;
}
.float-card {
  position: absolute;
  display: flex; align-items: center; gap: 0.75rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 12px; padding: 0.8rem 1.2rem;
  font-size: 0.88rem; font-weight: 600;
  backdrop-filter: blur(10px);
  animation: float 7s ease-in-out infinite;
  pointer-events: auto;
  white-space: nowrap;
}
@keyframes float {
  0%,100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-18px) rotate(0.5deg); }
}

/* ── Sections ─────────────────────────────────────────────── */
.section { padding: 6rem 5%; position: relative; }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.9rem);
  margin-bottom: 0.8rem;
}
.section-header p { color: var(--clr-muted); font-size: 1.05rem; }

/* ── Tools Grid ───────────────────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.8rem;
}

.tool-card {
  padding: 2rem; transition: var(--transition);
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
}
.tool-card::before {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-red), transparent);
  opacity: 0; transition: var(--transition);
}
.tool-card:hover {
  transform: translateY(-8px);
  border-color: rgba(230,0,35,0.25);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(230,0,35,0.12);
}
.tool-card:hover::before { opacity: 1; }

.tool-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--clr-red-soft);
  color: var(--clr-red);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; margin-bottom: 1.4rem;
  border: 1px solid rgba(230,0,35,0.2);
  transition: var(--transition);
}
.tool-card:hover .tool-icon {
  background: var(--clr-red); color: #fff;
}
.tool-card h3 {
  font-size: 1.3rem; margin-bottom: 0.8rem;
}
.tool-card p {
  color: var(--clr-muted); flex-grow: 1; margin-bottom: 1.5rem;
  font-size: 0.95rem;
}
.tool-card .btn { align-self: flex-start; }

/* ── Generator Pages ──────────────────────────────────────── */
.generator-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2.5rem; max-width: 1180px; margin: 0 auto;
  align-items: start;
}

.generator-form {
  padding: 2.5rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.55rem; }
.form-group label {
  font-size: 0.88rem; font-weight: 600;
  color: var(--clr-muted); text-transform: uppercase; letter-spacing: 0.8px;
  font-family: var(--font-head);
}

.form-control {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.88rem 1rem;
  color: var(--clr-text);
  font-size: 0.97rem;
  transition: var(--transition); width: 100%;
}
body.light-mode .form-control {
  background: rgba(0,0,0,0.035);
  color: var(--clr-text);
}
.form-control:focus {
  outline: none;
  border-color: var(--clr-red);
  background: rgba(230,0,35,0.04);
  box-shadow: 0 0 0 3px var(--clr-red-soft);
}
textarea.form-control { resize: vertical; min-height: 110px; }
select.form-control option { background: #111118; color: #f0f0f5; }
body.light-mode select.form-control option { background: #fff; color: #111; }

.file-upload-wrapper {
  width: 100%; min-height: 130px;
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-md);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 0.6rem;
  cursor: pointer; transition: var(--transition);
  background: rgba(255,255,255,0.01);
  position: relative;
}
.file-upload-wrapper input[type="file"] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer;
}
.file-upload-wrapper:hover, .file-upload-wrapper.dragover {
  border-color: var(--clr-red);
  background: var(--clr-red-soft);
}
.file-upload-wrapper span { font-size: 0.9rem; color: var(--clr-muted); }

.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Result Area */
.generator-result-area { position: sticky; top: 100px; }

.result-card {
  padding: 2rem; min-height: 420px;
  display: flex; flex-direction: column;
}
.result-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.5rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--clr-border);
}
.result-header h3 { font-size: 1.15rem; }

.result-content {
  flex-grow: 1; display: flex; flex-direction: column; gap: 1rem;
}

.empty-state {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  height: 100%; flex-grow: 1;
  color: var(--clr-muted); text-align: center; gap: 1rem;
  padding: 3rem 1rem;
}
.empty-state i { font-size: 2.8rem; opacity: 0.3; }
.empty-state p { font-size: 0.95rem; }

/* Output Items */
.output-item {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 3.2rem 1.25rem 1.25rem;
  position: relative; transition: var(--transition);
}
body.light-mode .output-item { background: rgba(0,0,0,0.02); }
.output-item:hover { border-color: rgba(230,0,35,0.2); }
.output-text { white-space: pre-wrap; font-size: 0.94rem; line-height: 1.7; }

.copy-btn {
  position: absolute; top: 0.85rem; right: 0.85rem;
  width: 32px; height: 32px; border-radius: 7px;
  background: rgba(255,255,255,0.07); border: none;
  color: var(--clr-muted);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.copy-btn:hover { background: var(--clr-red); color: #fff; }

/* Loader */
.loader {
  display: none; width: 44px; height: 44px;
  border: 3px solid rgba(255,255,255,0.08);
  border-top-color: var(--clr-red);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
  margin: 2.5rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Why Choose Section Cards ─────────────────────────────── */
.feature-card {
  padding: 2rem; text-align: center;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); }
.feature-card i { font-size: 2rem; color: var(--clr-red); margin-bottom: 1rem; display: block; }
.feature-card h4 { font-size: 1.1rem; margin-bottom: 0.6rem; font-family: var(--font-head); }
.feature-card p { color: var(--clr-muted); font-size: 0.93rem; }

/* ── Footer ───────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--clr-border);
  padding: 4rem 5% 2rem; margin-top: 3rem;
}
.footer-content {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem; margin-bottom: 2.5rem;
}
.footer-brand p { color: var(--clr-muted); margin-top: 0.9rem; font-size: 0.94rem; }
.footer-links h4 {
  font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--clr-muted);
  margin-bottom: 1.2rem; font-family: var(--font-head);
}
.footer-links ul { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.footer-links a { color: var(--clr-muted); font-size: 0.93rem; }
.footer-links a:hover { color: var(--clr-red); }

.footer-bottom {
  text-align: center; padding-top: 1.8rem;
  border-top: 1px solid var(--clr-border);
  color: var(--clr-muted); font-size: 0.87rem;
}

/* ── Scroll Reveal ────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(28px); transition: all 0.75s cubic-bezier(0.22,1,0.36,1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* ── Page-specific: Legal / Privacy / Terms ───────────────── */
.legal-content { padding: 3rem; }
.legal-content h3 { color: var(--clr-red); margin-bottom: 0.8rem; font-size: 1.1rem; }
.legal-content p { color: var(--clr-muted); margin-bottom: 2rem; font-size: 0.95rem; line-height: 1.8; }

/* ── Contact Info Card ────────────────────────────────────── */
.contact-link {
  display: flex; align-items: center; gap: 1rem;
  color: var(--clr-text); text-decoration: none;
  padding: 1rem; border-radius: var(--radius-md);
  transition: var(--transition);
}
.contact-link:hover { background: var(--clr-red-soft); }
.contact-icon {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--clr-red-soft);
  color: var(--clr-red);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.15rem; flex-shrink: 0; transition: var(--transition);
  border: 1px solid rgba(230,0,35,0.2);
}
.contact-link:hover .contact-icon { background: var(--clr-red); color: #fff; }
.contact-link-label { font-size: 0.78rem; color: var(--clr-muted); margin-bottom: 0.15rem; }
.contact-link-value { font-weight: 600; font-size: 0.95rem; }

/* ── Section Highlight ────────────────────────────────────── */
.highlight-section {
  margin: 0 5%; border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .generator-layout { grid-template-columns: 1fr; }
  .generator-result-area { position: static; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 0; right: -100%;
    width: 260px; height: 100vh;
    background: rgba(7,7,10,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column; padding: 6rem 2rem 2rem;
    transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
    border-left: 1px solid var(--clr-border); z-index: 900;
    gap: 1.2rem;
  }
  body.light-mode .nav-links { background: rgba(242,242,247,0.98); }
  .nav-links.active { right: 0; }
  .nav-link { font-size: 1.1rem; color: var(--clr-text); }
  .mobile-menu-btn { display: block; }

  .hero-stats { gap: 1.5rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .form-grid-2 { grid-template-columns: 1fr; }
  .float-card { display: none; }
}

@media (max-width: 480px) {
  .section { padding: 4rem 4%; }
  .generator-form { padding: 1.5rem; }
  .result-card { padding: 1.5rem; }
}