/* ═══════════════════════════════════════════════════════════════════════════
   PINLYF DESIGN SYSTEM v2.0
   Premium SaaS ERP Platform Design Tokens & Utilities
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Theme Variables ───────────────────────────────────────────────────── */
:root {
  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', var(--font-body);

  /* Dark Theme (Default) */
  --bg-body: #050816;
  --bg-surface: #0a0e27;
  --bg-card: rgba(15, 20, 50, 0.6);
  --bg-card-hover: rgba(20, 28, 65, 0.8);
  --bg-elevated: rgba(20, 25, 55, 0.9);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Brand Colors */
  --brand-green: #00d47e;
  --brand-green-hover: #00f590;
  --brand-green-soft: rgba(0, 212, 126, 0.08);
  --brand-green-glow: rgba(0, 212, 126, 0.25);

  --brand-blue: #3b82f6;
  --brand-blue-hover: #60a5fa;
  --brand-blue-soft: rgba(59, 130, 246, 0.08);

  --brand-purple: #8b5cf6;
  --brand-purple-hover: #a78bfa;
  --brand-purple-soft: rgba(139, 92, 246, 0.08);

  --brand-cyan: #06b6d4;
  --brand-cyan-soft: rgba(6, 182, 212, 0.08);

  --brand-amber: #f59e0b;
  --brand-amber-soft: rgba(245, 158, 11, 0.08);

  --brand-rose: #f43f5e;
  --brand-rose-soft: rgba(244, 63, 94, 0.08);

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.08);
  --border-default: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.2);
  --border-brand: rgba(0, 212, 126, 0.3);

  /* Glass */
  --glass-bg: rgba(15, 20, 50, 0.5);
  --glass-bg-strong: rgba(15, 20, 50, 0.8);
  --glass-border: rgba(148, 163, 184, 0.1);
  --glass-blur: blur(20px) saturate(180%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
  --shadow-glow-green: 0 0 40px rgba(0, 212, 126, 0.15);
  --shadow-glow-blue: 0 0 40px rgba(59, 130, 246, 0.15);

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #00d47e 0%, #3b82f6 100%);
  --gradient-hero: linear-gradient(135deg, #00d47e 0%, #06b6d4 50%, #3b82f6 100%);
  --gradient-dark: linear-gradient(180deg, #050816 0%, #0a0e27 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 212, 126, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
  --gradient-text: linear-gradient(135deg, #00d47e, #3b82f6);

  /* Z-index layers */
  --z-base: 1;
  --z-sticky: 100;
  --z-dropdown: 200;
  --z-modal: 300;
  --z-toast: 400;
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-in-out);
}

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
}

ul, ol {
  list-style: none;
}


/* ── Layout ────────────────────────────────────────────────────────────── */
.ds-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.ds-container-narrow {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.ds-container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.ds-section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.ds-section-sm {
  padding: var(--space-3xl) 0;
}

.ds-section-lg {
  padding: 160px 0;
}


/* ── Typography ────────────────────────────────────────────────────────── */
.ds-h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.ds-h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.ds-h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: 600;
}

.ds-h4 {
  font-size: 1.125rem;
  font-weight: 600;
}

.ds-body {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.ds-body-lg {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

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

.ds-overline {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-green);
}

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


/* ── Buttons ───────────────────────────────────────────────────────────── */
.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
}

.ds-btn-primary {
  background: var(--brand-green);
  color: var(--text-inverse);
  border-color: var(--brand-green);
}

.ds-btn-primary:hover {
  background: var(--brand-green-hover);
  border-color: var(--brand-green-hover);
  box-shadow: var(--shadow-glow-green);
  transform: translateY(-2px);
}

.ds-btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.ds-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

.ds-btn-ghost {
  background: transparent;
  color: var(--brand-green);
  border-color: transparent;
  padding: 8px 16px;
}

.ds-btn-ghost:hover {
  background: var(--brand-green-soft);
}

.ds-btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

.ds-btn-sm {
  padding: 8px 18px;
  font-size: 0.8125rem;
}

.ds-btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}


/* ── Cards ─────────────────────────────────────────────────────────────── */
.ds-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration-normal) var(--ease-out);
}

.ds-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-default);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.ds-card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.ds-card-glow {
  position: relative;
  overflow: hidden;
}

.ds-card-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.ds-card-glow:hover::before {
  opacity: 1;
}


/* ── Badges ────────────────────────────────────────────────────────────── */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.ds-badge-green {
  background: var(--brand-green-soft);
  color: var(--brand-green);
  border: 1px solid rgba(0, 212, 126, 0.2);
}

.ds-badge-blue {
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.ds-badge-purple {
  background: var(--brand-purple-soft);
  color: var(--brand-purple);
  border: 1px solid rgba(139, 92, 246, 0.2);
}


/* ── Icon Containers ───────────────────────────────────────────────────── */
.ds-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.ds-icon-box-green {
  background: var(--brand-green-soft);
  color: var(--brand-green);
  border: 1px solid rgba(0, 212, 126, 0.15);
}

.ds-icon-box-blue {
  background: var(--brand-blue-soft);
  color: var(--brand-blue);
  border: 1px solid rgba(59, 130, 246, 0.15);
}

.ds-icon-box-purple {
  background: var(--brand-purple-soft);
  color: var(--brand-purple);
  border: 1px solid rgba(139, 92, 246, 0.15);
}

.ds-icon-box-cyan {
  background: var(--brand-cyan-soft);
  color: var(--brand-cyan);
  border: 1px solid rgba(6, 182, 212, 0.15);
}

.ds-icon-box-amber {
  background: var(--brand-amber-soft);
  color: var(--brand-amber);
  border: 1px solid rgba(245, 158, 11, 0.15);
}

.ds-icon-box-rose {
  background: var(--brand-rose-soft);
  color: var(--brand-rose);
  border: 1px solid rgba(244, 63, 94, 0.15);
}


/* ── Section Headers ───────────────────────────────────────────────────── */
.ds-section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.ds-section-header .ds-overline {
  margin-bottom: var(--space-md);
  display: block;
}

.ds-section-header .ds-h2 {
  margin-bottom: var(--space-md);
}

.ds-section-header .ds-body-lg {
  max-width: 580px;
  margin: 0 auto;
}


/* ── Grid Utilities ────────────────────────────────────────────────────── */
.ds-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.ds-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.ds-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.ds-flex {
  display: flex;
}

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

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

.ds-flex-col {
  display: flex;
  flex-direction: column;
}

.ds-gap-sm { gap: var(--space-sm); }
.ds-gap-md { gap: var(--space-md); }
.ds-gap-lg { gap: var(--space-lg); }
.ds-gap-xl { gap: var(--space-xl); }
.ds-gap-2xl { gap: var(--space-2xl); }


/* ── Form Elements ─────────────────────────────────────────────────────── */
.ds-input {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: rgba(15, 20, 50, 0.6);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.ds-input:focus {
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px var(--brand-green-soft);
}

.ds-input::placeholder {
  color: var(--text-muted);
}

.ds-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: rgba(15, 20, 50, 0.6);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  outline: none;
  appearance: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-in-out);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.ds-select:focus {
  border-color: var(--brand-green);
  box-shadow: 0 0 0 3px var(--brand-green-soft);
}

.ds-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.ds-form-group {
  margin-bottom: var(--space-md);
}


/* ── Dividers ──────────────────────────────────────────────────────────── */
.ds-divider {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--space-2xl) 0;
}

.ds-divider-gradient {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
  margin: var(--space-2xl) 0;
}


/* ── Keyframe Animations ───────────────────────────────────────────────── */
@keyframes ds-fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ds-fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes ds-fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes ds-fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes ds-scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes ds-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes ds-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes ds-glow-pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 126, 0.1); }
  50% { box-shadow: 0 0 40px rgba(0, 212, 126, 0.25); }
}

@keyframes ds-gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes ds-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes ds-counter-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

@keyframes ds-slide-in-bottom {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes ds-mesh-move {
  0% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
  100% { transform: translate(0, 0) rotate(360deg); }
}


/* ── Animation Utilities ───────────────────────────────────────────────── */
.ds-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.ds-animate.ds-visible {
  opacity: 1;
  transform: translateY(0);
}

.ds-animate-delay-1 { transition-delay: 100ms; }
.ds-animate-delay-2 { transition-delay: 200ms; }
.ds-animate-delay-3 { transition-delay: 300ms; }
.ds-animate-delay-4 { transition-delay: 400ms; }
.ds-animate-delay-5 { transition-delay: 500ms; }
.ds-animate-delay-6 { transition-delay: 600ms; }
.ds-animate-delay-7 { transition-delay: 700ms; }
.ds-animate-delay-8 { transition-delay: 800ms; }

.ds-float { animation: ds-float 6s ease-in-out infinite; }


/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .ds-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .ds-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .ds-container {
    padding: 0 var(--space-md);
  }
  .ds-section {
    padding: var(--space-3xl) 0;
  }
  .ds-section-lg {
    padding: var(--space-4xl) 0;
  }
  .ds-grid-2,
  .ds-grid-3,
  .ds-grid-4 {
    grid-template-columns: 1fr;
  }
  .ds-h1 {
    font-size: clamp(2rem, 8vw, 2.75rem);
  }
  .ds-h2 {
    font-size: clamp(1.5rem, 6vw, 2.25rem);
  }
  .ds-section-header {
    margin-bottom: var(--space-2xl);
  }
}

@media (max-width: 480px) {
  .ds-btn-lg {
    padding: 14px 28px;
    font-size: 0.9375rem;
  }
}


/* ── Accessibility ─────────────────────────────────────────────────────── */
.ds-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;
}

:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 2px;
}

@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;
  }
  .ds-animate {
    opacity: 1;
    transform: none;
  }
}