/* Brainpowertools - Gradient Modern Style */

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --bg: #0f0f11;
  --bg-subtle: #141418;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --surface-solid: #1a1a1f;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.12);
  --text: #ffffff;
  --text-muted: #9ca3af;
  --text-subtle: #6b7280;

  /* Gradients */
  --gradient-1: #6366f1;
  --gradient-2: #8b5cf6;
  --gradient-3: #ec4899;
  --gradient-primary: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  --gradient-full: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));

  /* Status colors */
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 80px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
  width: 100%;
  max-width: 100vw;
}

*, *::before, *::after {
  box-sizing: border-box;
}

main {
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  color: var(--text-muted);
}

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

/* Gradient text utility */
.gradient-text {
  background: var(--gradient-full);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Container */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background: rgba(15, 15, 17, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-header__logo {
  font-weight: 600;
  font-size: 1.125rem;
  background: linear-gradient(90deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: opacity var(--transition-fast);
}

.site-header__logo:hover {
  opacity: 0.8;
}

.site-header__nav {
  display: flex;
  gap: var(--space-xl);
}

.site-header__nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.site-header__nav a:hover,
.site-header__nav a.active {
  color: var(--text);
}

/* Mobile menu toggle */
.site-header__menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.site-header__menu-icon {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  position: relative;
}

.site-header__menu-icon::before,
.site-header__menu-icon::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: var(--text);
  left: 0;
}

.site-header__menu-icon::before { top: -6px; }
.site-header__menu-icon::after { top: 6px; }

@media (max-width: 768px) {
  .site-header__menu-toggle {
    display: block;
  }

  .site-header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }

  .site-header__nav.open {
    display: flex;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  margin-top: auto;
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.site-footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-xl);
}

.site-footer__brand {
  max-width: 280px;
}

.site-footer__logo {
  display: block;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: var(--space-sm);
  text-decoration: none;
}

.site-footer__logo:hover {
  opacity: 0.8;
}

.site-footer__tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.site-footer__nav {
  display: flex;
  gap: var(--space-3xl);
}

.site-footer__nav-column h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.site-footer__nav-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-footer__nav-column a {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.site-footer__nav-column a:hover {
  color: var(--text);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-footer__legal {
  font-size: 0.75rem;
  color: var(--text-subtle);
}

.site-footer__legal-links {
  display: flex;
  gap: var(--space-lg);
}

.site-footer__legal-links a {
  font-size: 0.75rem;
  color: var(--text-subtle);
  transition: color var(--transition-fast);
}

.site-footer__legal-links a:hover {
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .site-footer__top {
    flex-direction: column;
  }

  .site-footer__nav {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--space-4xl) 0;
}

.section--hero {
  padding: 120px 0 var(--space-4xl);
  text-align: center;
  position: relative;
}

.section--hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 800px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.section__label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.section__title {
  margin-bottom: var(--space-md);
}

.section__description {
  font-size: 1.125rem;
  max-width: 600px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
}

.card--product {
  padding: var(--space-2xl);
}

.card__status {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.card__status--live {
  color: var(--success);
}

.card__status--coming {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card__title {
  margin-bottom: var(--space-sm);
}

.card__description {
  font-size: 1rem;
  margin-bottom: var(--space-lg);
  max-width: 520px;
}

.card__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.card__feature {
  font-size: 0.875rem;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
}

.btn--secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn--secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
}

/* ============================================
   HERO
   ============================================ */
.hero__title {
  position: relative;
  margin-bottom: var(--space-lg);
}

.hero__tagline {
  font-size: 1.125rem;
  color: var(--text-muted);
}

.hero__tagline span {
  display: block;
}

/* ============================================
   PRODUCTS GRID
   ============================================ */
.products-grid {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

/* ============================================
   FEATURES LIST
   ============================================ */
.features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.feature-item {
  padding: var(--space-lg);
}

.feature-item__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-md);
  color: var(--gradient-2);
}

.feature-item__title {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
}

.feature-item__description {
  font-size: 0.875rem;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-section {
  text-align: center;
}

.contact-card {
  max-width: 500px;
  margin: var(--space-2xl) auto 0;
  text-align: left;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 0.9375rem;
  font-family: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--gradient-2);
  background: var(--surface-hover);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text-subtle);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form button {
  align-self: flex-start;
}

/* ============================================
   BLOG EXTRAS
   ============================================ */
.blog-extras {
  margin: var(--space-3xl) 0;
  padding: var(--space-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.blog-extras__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.blog-extras__links {
  display: flex;
  gap: var(--space-lg);
}

.blog-extras__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.blog-extras__link:hover {
  color: var(--text);
}

.blog-extras__link svg {
  width: 16px;
  height: 16px;
}

.blog-extras__subscribe {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.blog-extras__nav {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.blog-extras__nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.blog-extras__nav-item--next {
  text-align: right;
}

.blog-extras__nav-label {
  font-size: 0.75rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-extras__nav-title {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.blog-extras__nav-item:hover .blog-extras__nav-title {
  color: var(--text);
}

.blog-extras__nav-item--disabled {
  opacity: 0.4;
  pointer-events: none;
}

@media (max-width: 640px) {
  .blog-extras__nav {
    flex-direction: column;
  }

  .blog-extras__nav-item--next {
    text-align: left;
  }
}

/* ============================================
   BLOG INDEX
   ============================================ */
.blog-list {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.blog-card {
  display: block;
  padding: var(--space-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.blog-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
}

.blog-card__date {
  font-size: 0.75rem;
  color: var(--text-subtle);
  margin-bottom: var(--space-sm);
  display: block;
}

.blog-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.blog-card__description {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* ============================================
   BLOG POST
   ============================================ */
.blog-post {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.blog-post__header {
  margin-bottom: var(--space-2xl);
}

.blog-post__date {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  display: block;
}

.blog-post__title {
  font-size: clamp(2rem, 4vw, 2.5rem);
}

.blog-post__content {
  font-size: 1.0625rem;
  line-height: 1.75;
}

.blog-post__content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.blog-post__content p {
  margin-bottom: var(--space-md);
  color: var(--text-muted);
}

.blog-post__content ul,
.blog-post__content ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
  color: var(--text-muted);
}

.blog-post__content li {
  margin-bottom: var(--space-sm);
}

.blog-post__content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.blog-post__content pre {
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

.blog-post__content pre code {
  background: none;
  padding: 0;
}

.blog-post__content a {
  color: var(--gradient-2);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-post__content a:hover {
  color: var(--gradient-3);
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

/* ============================================
   COOKIE CONSENT BANNER
   ============================================ */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface-solid);
  border-top: 1px solid var(--border);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  z-index: 1000;
}

.cookie-banner p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: center;
}

.cookie-banner a {
  color: var(--gradient-2);
  text-decoration: underline;
}

.cookie-buttons {
  display: flex;
  gap: var(--space-sm);
}

.btn--small {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

@media (min-width: 640px) {
  .cookie-banner {
    flex-direction: row;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
  }
}