CollectFlow/src/app/globals.css

@import "tailwindcss";

/* ═══════════════════════════════════════════
   CollectFlow — Apple-inspired Design System
   ═══════════════════════════════════════════ */

/* ── Dark Mode (default) ── */
:root {
  /* Apple macOS dark exact values */
  --bg-base: #000000;
  --bg-surface: #111111;
  --bg-elevated: #1c1c1e;
  --bg-overlay: rgba(28, 28, 30, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);

  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-muted: #86868b;

  --accent: #2dd4bf;
  /* emerald-ish, Apple-tuned */
  --accent-bg: rgba(45, 212, 191, 0.10);
  --accent-border: rgba(45, 212, 191, 0.20);

  /* Semantic UI accents */
  --accent-success: #10b981;
  --accent-success-bg: rgba(16, 185, 129, 0.10);
  --accent-warning: #f59e0b;
  --accent-warning-bg: rgba(245, 158, 11, 0.10);
  --accent-error: #f43f5e;
  --accent-error-bg: rgba(244, 63, 94, 0.10);

  /* Primary Action / Brand */
  --brand-solid: #10b981;
  --brand-hover: #059669;
  --action-secondary-bg: #2c2c2e;
  --action-secondary-text: #f5f5f7;
  --action-secondary-border: rgba(255, 255, 255, 0.1);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.6), 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.7), 0 1px 4px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.8), 0 2px 8px rgba(0, 0, 0, 0.6);
}

/* ── Light Mode ── */
.light {
  --bg-base: #f5f5f7;
  /* Apple light gray */
  --bg-surface: #ffffff;
  --bg-elevated: #f0f0f5;
  --bg-overlay: rgba(255, 255, 255, 0.82);
  --border: rgba(0, 0, 0, 0.07);
  --border-strong: rgba(0, 0, 0, 0.12);

  --text-primary: #1d1d1f;
  /* Apple dark */
  --text-secondary: #515154;
  --text-muted: #86868b;

  --accent: #0d9488;
  /* deeper teal in light */
  --accent-bg: rgba(13, 148, 136, 0.08);
  --accent-border: rgba(13, 148, 136, 0.18);

  /* Semantic UI accents (Light Mode Adjustments) */
  --accent-success: #059669;
  --accent-success-bg: rgba(5, 150, 105, 0.08);
  --accent-warning: #d97706;
  --accent-warning-bg: rgba(217, 119, 6, 0.08);
  --accent-error: #e11d48;
  --accent-error-bg: rgba(225, 29, 72, 0.08);

  /* Primary Action / Brand (Light) */
  --brand-solid: #0d9488;
  --brand-hover: #0f766e;
  --action-secondary-bg: #ffffff;
  --action-secondary-text: #1d1d1f;
  --action-secondary-border: rgba(0, 0, 0, 0.1);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10), 0 1px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
}

@layer base {
  html {
    color-scheme: dark;
    /* Force no system scroll jump */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  html.light {
    color-scheme: light;
  }

  body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans, -apple-system, "Inter", system-ui, sans-serif);
    font-size: 14px;
    line-height: 1.5;
    transition: background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1),
      color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* Apple-style focus ring */
  *:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
  }
}

/* ── Typography ── */
.text-primary {
  color: var(--text-primary);
}

.text-secondary {
  color: var(--text-secondary);
}

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

/* ── Surfaces & containers ── */
.surface { background: var(--bg-surface); }
.elevated { background: var(--bg-elevated); }

.apple-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.apple-card-header {
  padding: 16px 20px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.apple-card-content {
  padding: 20px;
}

/* ── Glass panels (sidebar, header) ── */
.glass {
  background: var(--bg-overlay);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

/* ── Apple border ── */
.border-apple {
  border: 1px solid var(--border);
}

.border-apple-strong {
  border: 1px solid var(--border-strong);
}

/* ── Tabular numbers & Mono ── */
.tabular-nums {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.015em;
}

.font-mono-nums {
  font-family: var(--font-sans, system-ui, sans-serif);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.015em;
}

/* ── Refined scrollbar ── */
.overflow-auto::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

.overflow-auto::-webkit-scrollbar-track {
  background: transparent;
}

.overflow-auto::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 99px;
}

.overflow-auto::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

.light .overflow-auto::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.18);
}

/* ── Heatmap cells ── */
.heatmap-zero {
  background: var(--bg-elevated);
  color: var(--text-muted);
}

.heatmap-low {
  background: rgba(45, 212, 191, 0.08);
  color: rgba(45, 212, 191, 0.70);
}

.heatmap-mid {
  background: rgba(45, 212, 191, 0.15);
  color: rgba(45, 212, 191, 0.90);
}

.heatmap-high {
  background: rgba(45, 212, 191, 0.25);
  color: #2dd4bf;
}

.light .heatmap-low {
  background: rgba(13, 148, 136, 0.08);
  color: #0f766e;
}

.light .heatmap-mid {
  background: rgba(13, 148, 136, 0.14);
  color: #0d9488;
}

.light .heatmap-high {
  background: rgba(13, 148, 136, 0.22);
  color: #0f766e;
}

/* ── Apple-style input ── */
.apple-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  transition: border-color 0.15s, box-shadow 0.15s;
}

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

.apple-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* ── Apple-style button ── */
.apple-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  border: none;
}

.apple-btn-primary:hover {
  opacity: 0.88;
}

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

.apple-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.apple-btn-secondary:hover {
  background: var(--bg-overlay);
}

/* ── Segment control (theme toggle) ── */
.segment-control {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 9px;
}

.segment-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 7px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}

.segment-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}