:root{
  --color-bg-primary:#12141A;
  --color-bg-secondary:#1D222C;
  --color-surface-elevated:#2A313D;
  --color-text-primary:#F5F7FA;
  --color-text-secondary:#BEC7D3;
  --color-text-inverse:#12141A;
  --color-accent-primary:#4C7DFF;
  --color-accent-secondary:#8A5CFF;
  --color-accent-tertiary:#00C2A8;
  --color-border-subtle:#384150;

  --font-heading:DM Serif Display, Georgia, Times, serif;
  --font-body:Inter, Roboto, Arial, sans-serif;

  --fs-1:clamp(2.25rem,4vw,3.5rem);
  --fs-2:clamp(1.75rem,3vw,2.5rem);
  --fs-3:clamp(1.4rem,2.2vw,1.75rem);
  --fs-4:1.25rem;
  --fs-5:1rem;
  --fs-6:0.875rem;

  --space-1:0.25rem;
  --space-2:0.5rem;
  --space-3:1rem;
  --space-4:2rem;
  --space-5:3rem;
  --space-6:5rem;

  --container-max:1200px;
  --container-pad:clamp(1.5rem,4vw,2rem);

  --radius-sm:8px;
  --radius-md:16px;

  --shadow-soft:0 1px 2px rgba(0,0,0,0.25);

  --transition-fast:160ms ease;
  --transition-base:260ms ease;
}

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

html{
  font-size:16px;
  -webkit-text-size-adjust:100%;
}

body{
  min-height:100vh;
  background:var(--color-bg-primary);
  color:var(--color-text-primary);
  font-family:var(--font-body);
  line-height:1.65;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

img,
picture,
video,
canvas,
svg{
  display:block;
  max-width:100%;
}

img{
  height:auto;
}

button,
input,
select,
textarea{
  font:inherit;
  color:inherit;
  background:none;
  border:none;
}

button{
  cursor:pointer;
}

a{
  color:inherit;
  text-decoration:none;
  transition:color var(--transition-fast), opacity var(--transition-fast);
}

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

:focus-visible{
  outline:2px solid var(--color-accent-primary);
  outline-offset:2px;
}

ul{list-style:none !important;}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-heading);
  font-weight:500;
  letter-spacing:0.02em;
  line-height:1.2;
  margin-block-end:var(--space-3);
}

h1{font-size:var(--fs-1);}
h2{font-size:var(--fs-2);}
h3{font-size:var(--fs-3);}
h4{font-size:var(--fs-4);}
h5{font-size:var(--fs-5);}
h6{font-size:var(--fs-6);}

p{
  font-size:var(--fs-5);
  color:var(--color-text-secondary);
  margin-block-end:var(--space-3);
}

small{
  font-size:var(--fs-6);
  color:var(--color-text-secondary);
}

blockquote{
  font-style:italic;
  margin-block-end:var(--space-4);
  padding-left:var(--space-3);
  border-left:2px solid var(--color-accent-secondary);
  color:var(--color-text-primary);
}

ol,ul{
  margin-block-end:var(--space-3);
}

hr{
  border:none;
  border-top:1px solid var(--color-border-subtle);
  margin-block:var(--space-4);
}

.container{
  width:100%;
  max-width:var(--container-max);
  margin-inline:auto;
  padding-inline:var(--container-pad);
}

.section{
  padding-block:var(--space-5);
}

.surface{
  background:var(--color-bg-secondary);
}

.surface-elevated{
  background:var(--color-surface-elevated);
  box-shadow:var(--shadow-soft);
}

.card{
  background:var(--color-bg-secondary);
  border:1px solid var(--color-border-subtle);
  border-radius:var(--radius-sm);
  padding:var(--space-4);
}

.card > :last-child{
  margin-bottom:0;
}

.stack{
  display:flex;
  flex-direction:column;
  gap:var(--space-3);
  min-width:0;
}

.row{
  display:flex;
  flex-wrap:wrap;
  gap:var(--space-3);
  min-width:0;
}

.inline{
  display:flex;
  align-items:center;
  gap:var(--space-2);
  min-width:0;
}

.center{
  display:flex;
  align-items:center;
  justify-content:center;
}

.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0.5em;
  padding:0.65em 1.2em;
  border-radius:var(--radius-sm);
  background:var(--color-accent-primary);
  color:#fff !important;
  font-weight:500;
  transition:transform var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
}

.button:hover{
  background:var(--color-accent-secondary);
  transform:translateY(-1px);
}

.button:active{
  transform:translateY(0);
}

.input,
textarea,
select{
  width:100%;
  background:var(--color-bg-secondary);
  border:1px solid var(--color-border-subtle);
  border-radius:var(--radius-sm);
  padding:0.6em 0.75em;
}

.input:focus,
textarea:focus,
select:focus{
  border-color:var(--color-accent-primary);
}

.label{
  font-size:var(--fs-6);
  color:var(--color-text-secondary);
}

.badge{
  display:inline-block;
  font-size:0.7rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--color-accent-secondary);
}

.media-rounded{
  border-radius:var(--radius-md);
  overflow:hidden;
}

.divider{
  height:1px;
  background:var(--color-border-subtle);
  width:100%;
}

.progress-bar{
  position:fixed;
  top:0;
  left:0;
  height:3px;
  background:var(--color-accent-primary);
  width:0%;
  z-index:9999;
}

.nav-toggle{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.no-overflow{
  overflow-x:hidden;
}

@media (max-width:768px){
  .section{
    padding-block:var(--space-4);
  }
}