/* ============================================
   NAIJAPLANET DESIGN SYSTEM
   Where Nigeria Connects
   Custom design tokens - NOT a template
   ============================================ */

/* ---------- ROOT VARIABLES: LIGHT MODE ---------- */
:root {
  /* Brand Colors - Nigerian identity, subtle not stereotypical */
  --np-primary: #0B7A4B;              /* Deep Nigerian green - modern, not flag-green */
  --np-primary-dark: #085F3B;
  --np-primary-light: #1FA972;
  --np-primary-soft: #E6F5EE;

  --np-accent: #FF6B2C;               /* Warm Nigerian orange - energy */
  --np-accent-dark: #E5551A;
  --np-accent-soft: #FFF0E6;

  --np-secondary: #1A2E4C;            /* Deep planet blue */
  --np-secondary-light: #2A4470;

  --np-gold: #F5B800;                 /* Nigerian gold accent */
  --np-gold-soft: #FFF7DC;

  /* Neutral Palette */
  --np-bg: #FAFBFC;                   /* Page background */
  --np-surface: #FFFFFF;              /* Cards, panels */
  --np-surface-alt: #F4F6F8;          /* Alternate surface */
  --np-surface-hover: #EEF1F4;

  --np-border: #E4E8EC;
  --np-border-strong: #CDD3DA;
  --np-divider: #F0F2F5;

  /* Text */
  --np-text: #0F1A2A;                 /* Primary text */
  --np-text-secondary: #4A5568;
  --np-text-muted: #7A8494;
  --np-text-inverse: #FFFFFF;

  /* Semantic */
  --np-success: #16A34A;
  --np-warning: #F59E0B;
  --np-error: #DC2626;
  --np-info: #0EA5E9;

  /* Reaction Colors */
  --np-love: #EF4444;
  --np-fire: #FF6B2C;
  --np-laugh: #FBBF24;
  --np-wow: #A78BFA;
  --np-sad: #60A5FA;
  --np-angry: #F87171;

  /* Elevation / Shadows */
  --np-shadow-xs: 0 1px 2px rgba(15, 26, 42, 0.04);
  --np-shadow-sm: 0 2px 6px rgba(15, 26, 42, 0.06);
  --np-shadow-md: 0 8px 20px rgba(15, 26, 42, 0.08);
  --np-shadow-lg: 0 16px 40px rgba(15, 26, 42, 0.12);
  --np-shadow-xl: 0 24px 60px rgba(15, 26, 42, 0.16);
  --np-shadow-brand: 0 8px 24px rgba(11, 122, 75, 0.25);
  --np-shadow-accent: 0 8px 24px rgba(255, 107, 44, 0.25);

  /* Radius */
  --np-radius-xs: 4px;
  --np-radius-sm: 8px;
  --np-radius-md: 12px;
  --np-radius-lg: 16px;
  --np-radius-xl: 20px;
  --np-radius-2xl: 28px;
  --np-radius-full: 999px;

  /* Spacing scale */
  --np-space-1: 4px;
  --np-space-2: 8px;
  --np-space-3: 12px;
  --np-space-4: 16px;
  --np-space-5: 20px;
  --np-space-6: 24px;
  --np-space-8: 32px;
  --np-space-10: 40px;
  --np-space-12: 48px;
  --np-space-16: 64px;
  --np-space-20: 80px;
  --np-space-24: 96px;

  /* Typography */
  --np-font-sans: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
  --np-font-display: 'Sora', 'Inter', 'Segoe UI', -apple-system, sans-serif;
  --np-font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;

  --np-text-xs: 0.75rem;      /* 12px */
  --np-text-sm: 0.875rem;     /* 14px */
  --np-text-base: 1rem;       /* 16px */
  --np-text-lg: 1.125rem;     /* 18px */
  --np-text-xl: 1.25rem;      /* 20px */
  --np-text-2xl: 1.5rem;      /* 24px */
  --np-text-3xl: 1.875rem;    /* 30px */
  --np-text-4xl: 2.25rem;     /* 36px */
  --np-text-5xl: 3rem;        /* 48px */
  --np-text-6xl: 3.75rem;     /* 60px */
  --np-text-7xl: 4.5rem;      /* 72px */

  --np-leading-tight: 1.15;
  --np-leading-snug: 1.35;
  --np-leading-normal: 1.55;
  --np-leading-relaxed: 1.75;

  --np-weight-regular: 400;
  --np-weight-medium: 500;
  --np-weight-semibold: 600;
  --np-weight-bold: 700;
  --np-weight-extrabold: 800;
  --np-weight-black: 900;

  /* Motion */
  --np-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --np-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --np-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --np-dur-fast: 150ms;
  --np-dur-base: 250ms;
  --np-dur-slow: 400ms;
  --np-dur-slower: 600ms;

  /* Layout */
  --np-container: 1200px;
  --np-container-wide: 1400px;
  --np-container-narrow: 900px;

  --np-header-h: 64px;
  --np-mobile-nav-h: 64px;

  /* Z-index scale */
  --np-z-base: 1;
  --np-z-dropdown: 100;
  --np-z-sticky: 200;
  --np-z-header: 300;
  --np-z-overlay: 800;
  --np-z-modal: 900;
  --np-z-toast: 1000;
  --np-z-max: 9999;

  /* Brand gradients */
  --np-gradient-brand: linear-gradient(135deg, #0B7A4B 0%, #1FA972 100%);
  --np-gradient-warm: linear-gradient(135deg, #FF6B2C 0%, #F5B800 100%);
  --np-gradient-cool: linear-gradient(135deg, #1A2E4C 0%, #2A4470 100%);
  --np-gradient-hero: linear-gradient(135deg, #0B7A4B 0%, #1A2E4C 60%, #FF6B2C 130%);
}

/* ---------- DARK MODE OVERRIDES ---------- */
[data-theme="dark"] {
  --np-bg: #0A0F16;
  --np-surface: #121821;
  --np-surface-alt: #1A2230;
  --np-surface-hover: #222C3C;

  --np-border: #2A3546;
  --np-border-strong: #3A4759;
  --np-divider: #1F2937;

  --np-text: #F5F7FA;
  --np-text-secondary: #B4BECC;
  --np-text-muted: #7A8494;

  --np-primary-soft: rgba(31, 169, 114, 0.12);
  --np-accent-soft: rgba(255, 107, 44, 0.12);
  --np-gold-soft: rgba(245, 184, 0, 0.12);

  --np-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.30);
  --np-shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.35);
  --np-shadow-md: 0 8px 20px rgba(0, 0, 0, 0.45);
  --np-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
  --np-shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.65);
}

/* ---------- BASE RESET ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--np-font-sans);
  font-size: var(--np-text-base);
  line-height: var(--np-leading-normal);
  color: var(--np-text);
  background: var(--np-bg);
  transition: background-color var(--np-dur-base) var(--np-ease-out),
              color var(--np-dur-base) var(--np-ease-out);
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

a {
  color: var(--np-primary);
  text-decoration: none;
  transition: color var(--np-dur-fast) var(--np-ease-out);
}

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

input, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--np-font-display);
  font-weight: var(--np-weight-bold);
  line-height: var(--np-leading-tight);
  letter-spacing: -0.015em;
  color: var(--np-text);
}

p {
  margin: 0;
}

/* ---------- CONTAINER ---------- */
.np-container {
  width: 100%;
  max-width: var(--np-container);
  margin-inline: auto;
  padding-inline: var(--np-space-5);
}

.np-container-wide {
  max-width: var(--np-container-wide);
}

.np-container-narrow {
  max-width: var(--np-container-narrow);
}

@media (min-width: 768px) {
  .np-container,
  .np-container-wide,
  .np-container-narrow {
    padding-inline: var(--np-space-8);
  }
}

/* ---------- BUTTONS ---------- */
.np-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--np-space-2);
  padding: 12px 20px;
  font-family: var(--np-font-sans);
  font-size: var(--np-text-sm);
  font-weight: var(--np-weight-semibold);
  line-height: 1;
  border-radius: var(--np-radius-full);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--np-dur-fast) var(--np-ease-out),
              background-color var(--np-dur-fast) var(--np-ease-out),
              box-shadow var(--np-dur-fast) var(--np-ease-out),
              border-color var(--np-dur-fast) var(--np-ease-out),
              color var(--np-dur-fast) var(--np-ease-out);
  white-space: nowrap;
  user-select: none;
}

.np-btn:focus-visible {
  outline: 2px solid var(--np-primary);
  outline-offset: 2px;
}

.np-btn:active {
  transform: scale(0.97);
}

.np-btn-primary {
  background: var(--np-primary);
  color: var(--np-text-inverse);
  box-shadow: var(--np-shadow-brand);
}

.np-btn-primary:hover {
  background: var(--np-primary-dark);
  box-shadow: var(--np-shadow-lg);
}

.np-btn-accent {
  background: var(--np-accent);
  color: var(--np-text-inverse);
  box-shadow: var(--np-shadow-accent);
}

.np-btn-accent:hover {
  background: var(--np-accent-dark);
}

.np-btn-secondary {
  background: var(--np-surface);
  color: var(--np-text);
  border-color: var(--np-border-strong);
}

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

.np-btn-ghost {
  background: transparent;
  color: var(--np-text);
}

.np-btn-ghost:hover {
  background: var(--np-surface-hover);
}

.np-btn-lg {
  padding: 16px 28px;
  font-size: var(--np-text-base);
}

.np-btn-sm {
  padding: 8px 14px;
  font-size: var(--np-text-xs);
}

.np-btn-block {
  width: 100%;
}

.np-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ---------- FORMS ---------- */
.np-input,
.np-textarea,
.np-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--np-font-sans);
  font-size: var(--np-text-base);
  color: var(--np-text);
  background: var(--np-surface);
  border: 1.5px solid var(--np-border);
  border-radius: var(--np-radius-md);
  transition: border-color var(--np-dur-fast) var(--np-ease-out),
              box-shadow var(--np-dur-fast) var(--np-ease-out);
}

.np-input:focus,
.np-textarea:focus,
.np-select:focus {
  outline: none;
  border-color: var(--np-primary);
  box-shadow: 0 0 0 3px var(--np-primary-soft);
}

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

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

.np-label {
  display: block;
  font-size: var(--np-text-sm);
  font-weight: var(--np-weight-semibold);
  color: var(--np-text);
  margin-bottom: var(--np-space-2);
}

.np-field {
  margin-bottom: var(--np-space-4);
}

.np-field-help {
  font-size: var(--np-text-xs);
  color: var(--np-text-muted);
  margin-top: var(--np-space-1);
}

.np-field-error {
  font-size: var(--np-text-xs);
  color: var(--np-error);
  margin-top: var(--np-space-1);
}

/* ---------- CARDS ---------- */
.np-card {
  background: var(--np-surface);
  border: 1px solid var(--np-border);
  border-radius: var(--np-radius-lg);
  overflow: hidden;
  transition: box-shadow var(--np-dur-base) var(--np-ease-out),
              transform var(--np-dur-base) var(--np-ease-out);
}

.np-card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--np-shadow-lg);
}

.np-card-body {
  padding: var(--np-space-5);
}

/* ---------- BADGES / CHIPS ---------- */
.np-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--np-space-1);
  padding: 4px 10px;
  font-size: var(--np-text-xs);
  font-weight: var(--np-weight-semibold);
  color: var(--np-text-secondary);
  background: var(--np-surface-alt);
  border-radius: var(--np-radius-full);
}

.np-chip-primary {
  color: var(--np-primary-dark);
  background: var(--np-primary-soft);
}

.np-chip-accent {
  color: var(--np-accent-dark);
  background: var(--np-accent-soft);
}

.np-chip-gold {
  color: #7A5A00;
  background: var(--np-gold-soft);
}

/* ---------- AVATAR ---------- */
.np-avatar {
  display: inline-block;
  border-radius: var(--np-radius-full);
  object-fit: cover;
  background: var(--np-surface-alt);
  border: 2px solid var(--np-surface);
}

.np-avatar-sm { width: 32px; height: 32px; }
.np-avatar-md { width: 44px; height: 44px; }
.np-avatar-lg { width: 64px; height: 64px; }
.np-avatar-xl { width: 96px; height: 96px; }

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

.np-flex { display: flex; }
.np-flex-col { display: flex; flex-direction: column; }
.np-items-center { align-items: center; }
.np-justify-center { justify-content: center; }
.np-justify-between { justify-content: space-between; }
.np-gap-1 { gap: var(--np-space-1); }
.np-gap-2 { gap: var(--np-space-2); }
.np-gap-3 { gap: var(--np-space-3); }
.np-gap-4 { gap: var(--np-space-4); }
.np-gap-6 { gap: var(--np-space-6); }

.np-text-center { text-align: center; }
.np-text-muted { color: var(--np-text-muted); }
.np-text-secondary { color: var(--np-text-secondary); }

.np-hidden { display: none !important; }

@media (max-width: 767px) {
  .np-hidden-mobile { display: none !important; }
}

@media (min-width: 768px) {
  .np-hidden-desktop { display: none !important; }
}

/* ---------- SKELETON LOADER ---------- */
.np-skeleton {
  background: linear-gradient(
    90deg,
    var(--np-surface-alt) 0%,
    var(--np-surface-hover) 50%,
    var(--np-surface-alt) 100%
  );
  background-size: 200% 100%;
  animation: np-shimmer 1.4s ease-in-out infinite;
  border-radius: var(--np-radius-sm);
}

@keyframes np-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- TOAST ---------- */
.np-toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: var(--np-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--np-space-2);
  pointer-events: none;
  max-width: 380px;
}

.np-toast {
  display: flex;
  align-items: center;
  gap: var(--np-space-3);
  padding: 14px 18px;
  background: var(--np-surface);
  color: var(--np-text);
  border-radius: var(--np-radius-md);
  border: 1px solid var(--np-border);
  box-shadow: var(--np-shadow-lg);
  font-size: var(--np-text-sm);
  font-weight: var(--np-weight-medium);
  pointer-events: auto;
  animation: np-toast-in var(--np-dur-slow) var(--np-ease-spring);
}

.np-toast-success { border-left: 4px solid var(--np-success); }
.np-toast-error { border-left: 4px solid var(--np-error); }
.np-toast-info { border-left: 4px solid var(--np-info); }
.np-toast-warning { border-left: 4px solid var(--np-warning); }

@keyframes np-toast-in {
  from {
    opacity: 0;
    transform: translateX(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@media (max-width: 767px) {
  .np-toast-container {
    top: auto;
    bottom: calc(var(--np-mobile-nav-h) + 16px);
    left: 16px;
    right: 16px;
    max-width: none;
  }
}

/* ---------- REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--np-border-strong);
  border-radius: var(--np-radius-full);
  border: 2px solid var(--np-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--np-text-muted);
}

/* ---------- SELECTION ---------- */
::selection {
  background: var(--np-primary);
  color: var(--np-text-inverse);
}