/* =========================================================
   base stylesheet
   design. code. clarity.
   ========================================================= */


/* =========================================================
   1) design tokens
   - single source of truth
   ========================================================= */
:root{
  /* colors */
  --bg:    rgba(0,0,0,.9);
  --text:  rgba(255,255,255,.87);
  --muted: rgba(255,255,255,.7);

  /* accents */
  --accent-primary:   #008DDA;
  --accent-secondary: #FF2DF1;
  --accent-highlight: #FFFF00;

  /* layout */
  --container: 1200px;
  --header-h:  48px;

  /* shape */
  --radius-sm: 12px;
  --radius-lg: 20px;

  /* shadow */
  --shadow-soft: 0 8px 20px rgba(0,0,0,.35);

  /* motion */
  --t-fast: .12s;
  --t-base: .3s;
  --t-slow: .6s;
  --ease: cubic-bezier(.25,.8,.25,1);
}


/* =========================================================
   2) reset + global guards
   ========================================================= */
*,*::before,*::after{
  box-sizing: border-box;
}

html,body{
  height: 100%;
}

html{
  overflow-x: hidden;
  scrollbar-gutter: stable both-edges;
}

body{
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;

  display: flex;
  flex-direction: column;

  background: var(--bg);
  color: var(--text);

  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}


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

.skip-link{
  position: absolute;
  top: -40px;
  left: 0;
  z-index: 10000;

  padding: .5rem 1rem;
  background: var(--accent-primary);
  color: #fff;

  transition: top var(--t-base) ease;
}

.skip-link:focus{
  top: 0;
}


/* =========================================================
   4) page transition (optional)
   ========================================================= */
#page-transition{
  position: fixed;
  inset: 0;
  z-index: 9999;

  background: var(--bg);
  pointer-events: none;

  transform: translateX(0);
  transition: transform var(--t-slow) var(--ease);
}

#page-transition.exit{
  transform: translateX(-100%);
}

main{
  flex: 1 0 auto;
  opacity: 1;
  transition: opacity var(--t-base) ease;
}

body.is-loading main,
body.is-leaving main{
  opacity: 0;
}

@media (prefers-reduced-motion: reduce){
  #page-transition,
  main{
    transition: none;
  }
}


/* =========================================================
   5) typography
   ========================================================= */
h1,h2,h3,h4,h5,h6{
  margin: 0 0 .5em;
  font-weight: 700;
  line-height: 1.2;
}

p{
  margin: 0 0 1em;
}

small{
  color: var(--muted);
  font-size: .875rem;
}

a{
  color: var(--accent-highlight);
  text-decoration: none;
  transition: color var(--t-fast) ease;
}

a:hover{
  color: var(--accent-secondary);
}


/* =========================================================
   6) layout primitives
   ========================================================= */
.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1rem;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 1000;

  height: var(--header-h);
  width: 100%;

  backdrop-filter: blur(6px) saturate(140%);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.header-grid{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1rem;
  height: 100%;
}

.nav{
  display: grid;
  grid-template-columns: minmax(0,1fr) auto minmax(0,1fr);
  align-items: center;
  height: 100%;
}

.nav-left-section{
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-self: start;
}

.nav .pages,
.nav .socials{
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav .header-title{
  justify-self: center;
}

.nav .header-title a{
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .02em;
  color: var(--text);
  transition: color var(--t-fast) ease;
}

.nav .header-title a:hover{
  color: var(--accent-highlight);
}

.nav .socials{
  justify-self: end;
}

.nav-link{
  font-size: .875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--t-fast) ease;
}

.nav-link:hover{
  color: var(--text);
}

.nav-link.is-active{
  color: var(--accent-highlight);
}

/* mobile nav toggle */
.nav-toggle{
  display: none;
  appearance: none;
  background: transparent;
  border: none;
  padding: .5rem;
  cursor: pointer;
}

.nav-toggle span{
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  transition:
    transform var(--t-fast) ease,
    opacity var(--t-fast) ease;
}

/* mobile menu panel */
.mobile-menu{
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;

  background: var(--bg);
  padding: 2rem 1rem;

  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition:
    opacity var(--t-base) ease,
    transform var(--t-base) ease;
}

.mobile-menu.is-active{
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-menu .nav-link{
  display: block;
  padding: .75rem 0;
  font-size: 1.125rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.nav-left,
.nav-center,
.nav-right{
  display: flex;
  align-items: center;
}

.nav-center{
  justify-self: center;
}

.nav-left{
  justify-self: start;
}

.nav-right{
  justify-self: end;
}


/* =========================================================
   7) images
   ========================================================= */
img{
  display: block;
  max-width: 100%;
  height: auto;
}


/* =========================================================
   8) buttons
   ========================================================= */
.button{
  appearance: none;
  cursor: pointer;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: .75rem 1.25rem;
  border-radius: 999px;

  font: inherit;
  font-weight: 600;
  letter-spacing: .02em;

  color: #fff;
  background: #111;
  border: 1px solid rgba(255,255,255,.3);

  box-shadow: var(--shadow-soft);

  transition:
    transform var(--t-fast) ease,
    box-shadow var(--t-fast) ease,
    border-color var(--t-base) ease;
}

.button:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.6);
}

.button:active{
  transform: translateY(1px);
}

.button:focus-visible{
  outline: none;
  box-shadow:
    0 0 0 3px rgba(255,45,241,.5),
    var(--shadow-soft);
}

.button:disabled{
  opacity: .6;
  cursor: not-allowed;
  transform: none;
}


/* =========================================================
   9) footer
   ========================================================= */
.footer{
  margin-top: auto;
  padding: .75rem 1rem;

  display: flex;
  justify-content: center;
  gap: 1rem;

  font-size: .75rem;
  color: var(--muted);

  border-top: 1px solid rgba(255,255,255,.12);
}


/* =========================================================
   10) grid system
   ========================================================= */
.grid{
  display: grid;
  gap: 1rem;
}

.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.grid-auto-fit{
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-fill{
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* flex utilities */
.flex{ display: flex; }
.flex-col{ flex-direction: column; }
.flex-wrap{ flex-wrap: wrap; }
.flex-center{
  display: flex;
  align-items: center;
  justify-content: center;
}

.items-start{ align-items: flex-start; }
.items-center{ align-items: center; }
.items-end{ align-items: flex-end; }

.justify-start{ justify-content: flex-start; }
.justify-center{ justify-content: center; }
.justify-end{ justify-content: flex-end; }
.justify-between{ justify-content: space-between; }

.gap-0{ gap: 0; }
.gap-xs{ gap: .25rem; }
.gap-sm{ gap: .5rem; }
.gap-md{ gap: 1rem; }
.gap-lg{ gap: 2rem; }
.gap-xl{ gap: 4rem; }


/* =========================================================
   11) section + container variants
   ========================================================= */
.section{
  padding: 4rem 0;
}

.section-sm{
  padding: 2rem 0;
}

.section-lg{
  padding: 6rem 0;
}

.container-sm{
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container-lg{
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container-full{
  width: 100%;
  padding: 0 1rem;
}


/* =========================================================
   12) card component
   ========================================================= */
.card{
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition:
    border-color var(--t-base) ease,
    transform var(--t-fast) ease;
}

.card:hover{
  border-color: rgba(255,255,255,.2);
}

.card-interactive:hover{
  transform: translateY(-2px);
  border-color: var(--accent-primary);
}

.card-header{
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.card-body{
  flex: 1;
}

.card-footer{
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,.1);
}


/* =========================================================
   13) form elements
   ========================================================= */
.form-group{
  margin-bottom: 1.25rem;
}

.form-label{
  display: block;
  margin-bottom: .5rem;
  font-weight: 600;
  font-size: .875rem;
  color: var(--text);
}

.form-input,
.form-textarea,
.form-select{
  width: 100%;
  padding: .75rem 1rem;

  font: inherit;
  font-size: 1rem;
  color: var(--text);

  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-sm);

  transition:
    border-color var(--t-base) ease,
    box-shadow var(--t-base) ease;
}

.form-input::placeholder,
.form-textarea::placeholder{
  color: var(--muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus{
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0,141,218,.25);
}

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

.form-select{
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* checkbox + radio */
.form-check{
  display: flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
}

.form-check-input{
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;

  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 4px;

  cursor: pointer;
  transition:
    background var(--t-fast) ease,
    border-color var(--t-fast) ease;
}

.form-check-input[type="radio"]{
  border-radius: 50%;
}

.form-check-input:checked{
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.form-check-input:focus-visible{
  outline: none;
  box-shadow: 0 0 0 3px rgba(0,141,218,.25);
}

/* validation states */
.form-input.is-valid,
.form-textarea.is-valid{
  border-color: #22c55e;
}

.form-input.is-invalid,
.form-textarea.is-invalid{
  border-color: #ef4444;
}

.form-hint{
  margin-top: .375rem;
  font-size: .8125rem;
  color: var(--muted);
}

.form-error{
  margin-top: .375rem;
  font-size: .8125rem;
  color: #ef4444;
}


/* =========================================================
   14) button variants
   ========================================================= */
.button-primary{
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.button-primary:hover{
  background: #007acc;
  border-color: #007acc;
}

.button-secondary{
  background: transparent;
  border-color: rgba(255,255,255,.3);
}

.button-secondary:hover{
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.5);
}

.button-ghost{
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.button-ghost:hover{
  background: rgba(255,255,255,.1);
  border-color: transparent;
}

.button-sm{
  padding: .5rem 1rem;
  font-size: .875rem;
}

.button-lg{
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.button-block{
  display: flex;
  width: 100%;
}


/* =========================================================
   15) badge / tag
   ========================================================= */
.badge{
  display: inline-flex;
  align-items: center;
  padding: .25rem .625rem;
  font-size: .75rem;
  font-weight: 600;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  color: var(--text);
}

.badge-primary{
  background: var(--accent-primary);
}

.badge-secondary{
  background: var(--accent-secondary);
  color: #000;
}


/* =========================================================
   16) divider
   ========================================================= */
.divider{
  height: 1px;
  background: rgba(255,255,255,.12);
  margin: 2rem 0;
  border: none;
}

.divider-lg{
  margin: 4rem 0;
}


/* =========================================================
   17) spacing utilities
   ========================================================= */
/* margin */
.m-0{ margin: 0; }
.m-auto{ margin: auto; }
.mx-auto{ margin-left: auto; margin-right: auto; }
.my-auto{ margin-top: auto; margin-bottom: auto; }

.mt-0{ margin-top: 0; }
.mt-xs{ margin-top: .25rem; }
.mt-sm{ margin-top: .5rem; }
.mt-md{ margin-top: 1rem; }
.mt-lg{ margin-top: 2rem; }
.mt-xl{ margin-top: 4rem; }

.mb-0{ margin-bottom: 0; }
.mb-xs{ margin-bottom: .25rem; }
.mb-sm{ margin-bottom: .5rem; }
.mb-md{ margin-bottom: 1rem; }
.mb-lg{ margin-bottom: 2rem; }
.mb-xl{ margin-bottom: 4rem; }

.ml-auto{ margin-left: auto; }
.mr-auto{ margin-right: auto; }

/* padding */
.p-0{ padding: 0; }
.p-xs{ padding: .25rem; }
.p-sm{ padding: .5rem; }
.p-md{ padding: 1rem; }
.p-lg{ padding: 2rem; }
.p-xl{ padding: 4rem; }

.py-xs{ padding-top: .25rem; padding-bottom: .25rem; }
.py-sm{ padding-top: .5rem; padding-bottom: .5rem; }
.py-md{ padding-top: 1rem; padding-bottom: 1rem; }
.py-lg{ padding-top: 2rem; padding-bottom: 2rem; }
.py-xl{ padding-top: 4rem; padding-bottom: 4rem; }

.px-xs{ padding-left: .25rem; padding-right: .25rem; }
.px-sm{ padding-left: .5rem; padding-right: .5rem; }
.px-md{ padding-left: 1rem; padding-right: 1rem; }
.px-lg{ padding-left: 2rem; padding-right: 2rem; }
.px-xl{ padding-left: 4rem; padding-right: 4rem; }


/* =========================================================
   18) text utilities
   ========================================================= */
.text-left{ text-align: left; }
.text-center{ text-align: center; }
.text-right{ text-align: right; }

.text-xs{ font-size: .75rem; }
.text-sm{ font-size: .875rem; }
.text-base{ font-size: 1rem; }
.text-lg{ font-size: 1.125rem; }
.text-xl{ font-size: 1.25rem; }
.text-2xl{ font-size: 1.5rem; }
.text-3xl{ font-size: 2rem; }
.text-4xl{ font-size: 2.5rem; }
.text-5xl{ font-size: 3rem; }

.font-light{ font-weight: 300; }
.font-normal{ font-weight: 400; }
.font-medium{ font-weight: 500; }
.font-semibold{ font-weight: 600; }
.font-bold{ font-weight: 700; }

.text-muted{ color: var(--muted); }
.text-primary{ color: var(--accent-primary); }
.text-secondary{ color: var(--accent-secondary); }
.text-highlight{ color: var(--accent-highlight); }

.leading-none{ line-height: 1; }
.leading-tight{ line-height: 1.25; }
.leading-normal{ line-height: 1.5; }
.leading-relaxed{ line-height: 1.75; }

.truncate{
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.uppercase{ text-transform: uppercase; }
.lowercase{ text-transform: lowercase; }
.capitalize{ text-transform: capitalize; }


/* =========================================================
   19) display utilities
   ========================================================= */
.hidden{ display: none; }
.block{ display: block; }
.inline{ display: inline; }
.inline-block{ display: inline-block; }

.relative{ position: relative; }
.absolute{ position: absolute; }
.fixed{ position: fixed; }
.sticky{ position: sticky; }

.inset-0{
  top: 0; right: 0; bottom: 0; left: 0;
}

.w-full{ width: 100%; }
.h-full{ height: 100%; }
.min-h-screen{ min-height: 100vh; }

.overflow-hidden{ overflow: hidden; }
.overflow-auto{ overflow: auto; }

.rounded{ border-radius: var(--radius-sm); }
.rounded-lg{ border-radius: var(--radius-lg); }
.rounded-full{ border-radius: 9999px; }
.rounded-none{ border-radius: 0; }

.shadow{ box-shadow: var(--shadow-soft); }
.shadow-none{ box-shadow: none; }

.opacity-0{ opacity: 0; }
.opacity-50{ opacity: .5; }
.opacity-75{ opacity: .75; }
.opacity-100{ opacity: 1; }

.pointer-events-none{ pointer-events: none; }
.pointer-events-auto{ pointer-events: auto; }

.cursor-pointer{ cursor: pointer; }
.cursor-not-allowed{ cursor: not-allowed; }


/* =========================================================
   20) list reset + styles
   ========================================================= */
.list-none{
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-disc{
  list-style: disc;
  padding-left: 1.5rem;
}

.list-decimal{
  list-style: decimal;
  padding-left: 1.5rem;
}


/* =========================================================
   21) overlay / backdrop
   ========================================================= */
.overlay{
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base) ease;
}

.overlay.is-active{
  opacity: 1;
  pointer-events: auto;
}


/* =========================================================
   22) modal structure
   ========================================================= */
.modal{
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(.95);
  z-index: 1001;

  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;

  background: var(--bg);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-lg);

  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--t-base) ease,
    transform var(--t-base) ease;
}

.modal.is-active{
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.modal-header{
  padding: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.modal-body{
  padding: 1.5rem;
}

.modal-footer{
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
}


/* =========================================================
   23) responsive breakpoints
   ========================================================= */
@media (max-width: 1200px){
  .container{
    max-width: 960px;
  }
}

@media (max-width: 992px){
  .grid-4{
    grid-template-columns: repeat(2, 1fr);
  }

  .hide-lg{ display: none; }
}

@media (max-width: 768px){
  .container{
    max-width: 100%;
  }

  .grid-2,
  .grid-3,
  .grid-4{
    grid-template-columns: 1fr;
  }

  .section{
    padding: 3rem 0;
  }

  .section-lg{
    padding: 4rem 0;
  }

  /* mobile nav */
  .nav .pages{
    display: none;
  }

  .nav-toggle{
    display: block;
  }

  .mobile-menu{
    display: block;
  }

  .hide-md{ display: none; }
  .show-md{ display: block; }

  .text-center-md{ text-align: center; }
  .flex-col-md{ flex-direction: column; }
}

@media (max-width: 576px){
  .hide-sm{ display: none; }
  .show-sm{ display: block; }

  .p-lg{ padding: 1.5rem; }
  .p-xl{ padding: 2rem; }

  .text-4xl{ font-size: 2rem; }
  .text-5xl{ font-size: 2.5rem; }
}


/* =========================================================
   24) print styles
   ========================================================= */
@media print{
  *{
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
  }

  .site-header,
  .footer,
  #page-transition,
  .skip-link,
  .button{
    display: none !important;
  }

  a{
    text-decoration: underline;
  }

  .container{
    max-width: 100%;
  }
}


/* =========================================================
   end of base.css
   ========================================================= */