/* ============================================================
   GLOBAL DESIGN SYSTEM — Apple-inspired minimal aesthetic
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors */
  --bg:              #f5f5f7;
  --surface:         #ffffff;
  --surface-hover:   #fbfbfd;
  --surface-alt:     #f0f0f2;
  --border:          rgba(0, 0, 0, 0.06);
  --border-strong:   rgba(0, 0, 0, 0.12);

  --text:            #1d1d1f;
  --text-secondary:  #86868b;
  --text-tertiary:   #aeaeb2;

  --accent:          #0071e3;
  --accent-hover:    #0077ed;
  --accent-light:    rgba(0, 113, 227, 0.08);

  --success:         #34c759;
  --success-light:   rgba(52, 199, 89, 0.1);
  --warning:         #ff9f0a;
  --warning-light:   rgba(255, 159, 10, 0.1);
  --danger:          #ff3b30;
  --danger-light:    rgba(255, 59, 48, 0.1);

  /* Brand colors */
  --brand-adobe:     #ff0000;
  --brand-netflix:   #e50914;
  --brand-windows:   #00a4ef;
  --brand-office:    #d83b01;
  --brand-claude:    #d4a27f;

  /* Typography */
  --font:            'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:       'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;

  --text-xs:         0.75rem;    /* 12px */
  --text-sm:         0.8125rem;  /* 13px */
  --text-base:       0.9375rem;  /* 15px */
  --text-md:         1rem;       /* 16px */
  --text-lg:         1.125rem;   /* 18px */
  --text-xl:         1.375rem;   /* 22px */
  --text-2xl:        1.75rem;    /* 28px */
  --text-3xl:        2.25rem;    /* 36px */
  --text-4xl:        3rem;       /* 48px */

  --weight-light:    300;
  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  --leading-tight:   1.2;
  --leading-snug:    1.3;
  --leading-normal:  1.5;
  --tracking-tight:  -0.022em;
  --tracking-normal: -0.01em;

  /* Spacing */
  --space-1:  0.25rem;   /* 4px */
  --space-2:  0.5rem;    /* 8px */
  --space-3:  0.75rem;   /* 12px */
  --space-4:  1rem;      /* 16px */
  --space-5:  1.25rem;   /* 20px */
  --space-6:  1.5rem;    /* 24px */
  --space-8:  2rem;      /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */

  /* Radii */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:   0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
  --shadow-xl:   0 16px 48px rgba(0,0,0,0.1), 0 8px 16px rgba(0,0,0,0.06);

  /* Transitions */
  --ease:        cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:   150ms;
  --duration-normal: 250ms;
  --duration-slow:   400ms;

  /* Layout */
  --max-width:  1200px;
  --sidebar-w:  260px;
  --header-h:   64px;
}


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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-normal);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

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

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

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

ul, ol { list-style: none; }

table {
  width: 100%;
  border-collapse: collapse;
}


/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.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;
}


/* --- Button Components --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  line-height: 1;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--text-tertiary);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
}
.btn-ghost:hover {
  background: var(--accent-light);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background: #e0342a;
  transform: scale(1.02);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
}


/* --- Card Component --- */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease);
}

.card-hover:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--border-strong);
}


/* --- Badge Component --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  line-height: 1.4;
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent);
}
.badge-success {
  background: var(--success-light);
  color: #1a8d3a;
}
.badge-warning {
  background: var(--warning-light);
  color: #b36d00;
}
.badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}
.badge-neutral {
  background: var(--surface-alt);
  color: var(--text-secondary);
}


/* --- Form Inputs --- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.input-group label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text);
}

.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease);
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

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

select.input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2386868b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

textarea.input {
  resize: vertical;
  min-height: 100px;
}


/* --- Modal / Overlay --- */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease);
}

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

.modal {
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 90%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-8);
  transform: scale(0.95) translateY(10px);
  transition: transform var(--duration-normal) var(--ease-spring);
}

.overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal-header h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--surface-alt);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease);
  font-size: 18px;
  color: var(--text-secondary);
}
.modal-close:hover {
  background: var(--border-strong);
}


/* --- Table Styles --- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

.table {
  font-size: var(--text-sm);
}

.table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: var(--weight-semibold);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background: var(--surface-hover);
}


/* --- Toast Notification --- */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 280px;
  animation: toastIn var(--duration-normal) var(--ease-spring);
}

.toast.toast-out {
  animation: toastOut var(--duration-fast) var(--ease) forwards;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
}


/* --- Glassmorphism Utility --- */
.glass {
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.4);
}


/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.animate-fade-in    { animation: fadeIn var(--duration-normal) var(--ease); }
.animate-slide-up   { animation: slideUp var(--duration-slow) var(--ease); }
.animate-scale-in   { animation: scaleIn var(--duration-normal) var(--ease-spring); }


/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }


/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--text-secondary);
}

.empty-state svg {
  margin: 0 auto var(--space-4);
  opacity: 0.4;
}

.empty-state h3 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--text);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: var(--text-sm);
  max-width: 360px;
  margin: 0 auto;
}