/* ====================================================== */
/* VARIABLES                                              */
/* ====================================================== */
:root {
  /* COLORS */
  --color-background: #11131a;
  --color-surface: #181b25;
  --color-text: #f5f7fa;
  --color-primary: #6741d9;
  --color-primary-hover: #8163ee;
  --color-success: #2ecc72;
  --color-warning: #ffba08;
  --color-danger: #ff5e57;
  --color-neutral-100: #f5f7fa;
  --color-neutral-200: #e3e6eb;
  --color-neutral-300: #bfc4cf;
  --color-neutral-400: #8187a3;
  --color-neutral-500: #495172;
  --color-neutral-600: #373d53;
  --color-neutral-700: #232637;

  /* TYPOGRAPHY */
  --font-family-sans: 'Inter', 'Segoe UI', Arial, sans-serif;
  --font-family-heading: 'Montserrat', 'Segoe UI', Arial, sans-serif;
  --font-size-xs: 0.8125rem;   /* 13px */
  --font-size-sm: 0.9375rem;   /* 15px */
  --font-size-md: 1rem;        /* 16px */
  --font-size-lg: 1.25rem;     /* 20px */
  --font-size-xl: 1.5rem;      /* 24px */
  --font-size-2xl: 2rem;       /* 32px */
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* SPACING (0-96px) */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* RADIUS, SHADOW, TRANSITION */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-xs: 0 1px 2px 0 rgba(16, 18, 27, 0.04);
  --shadow-sm: 0 2px 6px 0 rgba(16, 18, 27, 0.08);
  --shadow-md: 0 6px 24px 0 rgba(16, 18, 27, 0.12);
  --transition-fast: 0.15s cubic-bezier(.4,0,.2,1);
  --transition: 0.25s cubic-bezier(.4,0,.2,1);
}

/* ====================================================== */
/* RESET / NORMALIZE                                      */
/* ====================================================== */
html {
  box-sizing: border-box;
  scroll-behavior: smooth;
  height: 100%;
}
*, *::before, *::after {
  box-sizing: inherit;
}
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
input, button, textarea, select {
  font: inherit;
}
button {
  background: none;
  border: none;
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}

/* Remove default outline but retain focus-visible accessibility */
:focus {
  outline: none;
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  transition: outline-color var(--transition-fast);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

/* ====================================================== */
/* BASE STYLES                                            */
/* ====================================================== */
body {
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-text);
}
h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
}
h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}
h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}
h4 {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-2);
}
h5, h6 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-4);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: underline;
  transition: color var(--transition-fast);
}
a:hover, a:focus-visible {
  color: var(--color-primary-hover);
}
a:active {
  color: var(--color-primary);
}

/* ====================================================== */
/* UTILITIES                                              */
/* ====================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

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

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.grid {
  display: grid;
  gap: var(--space-4);
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Spacing helpers (example usage: .mb-4 for margin-bottom) */
.mb-0 { margin-bottom: var(--space-0) !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-5 { margin-bottom: var(--space-5) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }

.mt-0 { margin-top: var(--space-0) !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-5 { margin-top: var(--space-5) !important; }
.mt-6 { margin-top: var(--space-6) !important; }

/* ====================================================== */
/* COMPONENTS                                             */
/* ====================================================== */
.button, button, [type="button"], [type="submit"], [type="reset"] {
  display: inline-block;
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: var(--color-neutral-100);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-md);
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  box-shadow: var(--shadow-xs);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.button:hover, button:hover, [type="button"]:hover, [type="submit"]:hover, [type="reset"]:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.button:disabled, button:disabled, [type="button"]:disabled, [type="submit"]:disabled, [type="reset"]:disabled {
  background: var(--color-neutral-500);
  color: var(--color-neutral-300);
  cursor: not-allowed;
  opacity: 0.7;
  box-shadow: var(--shadow-xs);
}
.button:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

input, select, textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-neutral-600);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--font-size-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus-visible, select:focus-visible, textarea:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-hover);
  outline: none;
}
input[disabled], select[disabled], textarea[disabled] {
  background: var(--color-neutral-600);
  color: var(--color-neutral-300);
  cursor: not-allowed;
  opacity: 0.6;
}

.card {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
  transition: box-shadow var(--transition);
}
.card:hover {
  box-shadow: 0 12px 32px 0 rgba(103,65,217,0.18), var(--shadow-md);
}

/* ====================================================== */
/* Header & Footer styles                                 */
/* ====================================================== */
.site-header {
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 1px 12px rgba(16,18,27,.13);
}
.header-nav {
  height: 72px;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-size: var(--font-size-xl);
  font-family: var(--font-family-heading);
  font-weight: 700;
}

.site-logo a {
  text-decoration: none;
}
.logo-text {
  color: var(--color-primary);
  letter-spacing: 0.5px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--font-size-md);
  transition: none;
}
.nav-list li a {
  padding: 4px 0;
  font-weight: 500;
  color: var(--color-neutral-100);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
      text-decoration: none;
}
.nav-list li a:hover, .nav-list li a:focus-visible {
  color: var(--color-primary-hover);
  border-bottom: 2px solid var(--color-primary);
}
.menu-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin-left: var(--space-3);
  cursor: pointer;
}
.menu-icon {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  position: relative;
  transition: background var(--transition-fast);
}
.menu-icon::before, .menu-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  transition: transform var(--transition-fast);
}
.menu-icon::before { top: -8px; }
.menu-icon::after { top: 8px; }
.menu-toggle[aria-expanded="true"] .menu-icon {
  background: transparent;
}
.menu-toggle[aria-expanded="true"] .menu-icon::before {
  transform: translateY(8px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-icon::after {
  transform: translateY(-8px) rotate(-45deg);
}
@media (max-width: 1024px) {
  .nav-list {
    display: none;
    position: absolute;
    top:72px;
    right:0;
    background: var(--color-surface);
    flex-direction: column;
    gap: var(--space-6);
    width: 100vw;
    max-width: 420px;
    padding: var(--space-8) var(--space-6);
    box-shadow: var(--shadow-md);
    z-index: 40;
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
    text-align: left;
  }
  .nav-list.open {
    display: flex;
  }
  .menu-toggle {
    display: flex;
  }
}

.site-footer {
  background: var(--color-surface);
  padding: var(--space-12) 0 var(--space-16) 0;
  position: relative;
}
.footer-content { gap: var(--space-6); }
.footer-brand {
  font-size: var(--font-size-lg);
  font-family: var(--font-family-heading);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
}
.footer-nav, .footer-legal {
  gap: var(--space-5);
  flex-wrap: wrap;
}
.footer-nav li a, .footer-legal li a {
  color: var(--color-neutral-100);
  font-size: var(--font-size-md);
  transition: color var(--transition-fast);
}
.footer-nav li a:hover, .footer-nav li a:focus-visible,
.footer-legal li a:hover, .footer-legal li a:focus-visible {
  color: var(--color-primary);
}
.footer-copy {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-300);
}
.footer-bottom {
  margin-top: var(--space-6);
  align-items: center;
}
@media (max-width: 600px) {
  .footer-top, .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
}

/* Cookie Consent Banner */
.cookie-consent {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  width: 100%;
  background: var(--color-neutral-700);
  color: var(--color-neutral-100);
  z-index: 120;
  padding: var(--space-5) 0;
  box-shadow: 0 -2px 12px rgba(16,18,27,0.13);
  display: none;
}
.cookie-consent.visible {
  display: flex;
  align-items: center;
  justify-content: center;
}
.cookie-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-4);
  max-width: 90vw;
}
.cookie-actions {
  display: flex;
  gap: var(--space-4);
}
@media (max-width: 500px) {
  .cookie-content {
    gap: var(--space-3);
    font-size: var(--font-size-sm);
  }
  .cookie-actions {
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }
  .cookie-actions button {
    width: 100%;
  }
}

/* ====================================================== */
/* END OF BASE CSS                                        */
/* ====================================================== */