/* ==============================================================================
   Seminar Accounting Dashboard -早瀬ユウカの管理室- Custom CSS Styling Sheet
   Upgraded UI: Highly-Chic, Solid Matte Dark & Sleek Smartphone UI Layout
   Inspired by: shadcn/ui & Minimalist SaaS Aesthetics (Reference Images)
   ============================================================================== */

/* Base Design System Matte Dark Tokens */
:root {
  --bg-primary: #09090b; /* Stark matte black-zinc */
  --bg-secondary: #0c0c0e;
  --bg-sidebar: #09090b;
  --card-matte: #18181b; /* Solid dark charcoal zinc card */
  --card-matte-hover: #202024;
  --border-matte: #27272a; /* Thin solid zinc outline */
  --border-focus: #38d5ff;
  --control-bg: #09090b;
  --control-bg-hover: #111114;
  --control-text: #f4f4f5;
  --control-placeholder: #71717a;
  --control-border: #27272a;
  --radius: 2px; /* Minimal modern 2px rounded corners */

  --accent-cyan: #38d5ff;
  --accent-cyan-hover: #67e8f9;
  --accent-cyan-dim: rgba(56, 213, 255, 0.14);
  --accent-cyan-faint: rgba(56, 213, 255, 0.07);
  --accent-pink: #fb7185;
  --accent-pink-dim: rgba(251, 113, 133, 0.14);
  --accent-lavender: #7dd3fc;
  --accent-yellow: #facc15;
  --accent-yellow-dim: rgba(250, 204, 21, 0.14);

  --color-white: #fafafa;
  --color-zinc-light: #f4f4f5;
  --color-zinc-muted: #9494a0;
  --color-green: #22c55e; /* Matte success green */
  --color-red: #ef4444; /* Matte danger red */

  --text-primary: #fafafa;
  --text-secondary: #b8b8c2;

  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family-sans: "Inter", sans-serif;
  --font-family-mono: "JetBrains Mono", monospace;
}

/* Base Styles & Resets */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family-sans);
  min-height: 100vh;
  /* biome-ignore lint/suspicious/noDuplicateProperties: dvh fallback for older browsers */
  min-height: 100dvh;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* ==============================================================================
   GOOGLE MATERIAL SYMBOLS FORMATTING (Ultra-Sleek shadcn Outline Style)
   ============================================================================== */
.material-symbols-outlined {
  font-variation-settings:
    "FILL" 0,
    "wght" 300, /* Lightweight outlines matching shadcn aesthetic */
    "GRAD" 0,
    "opsz" 24;
  vertical-align: middle;
  line-height: 1;
}

/* Sidebar navigation adjustments */
.menu-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-icon-symbol {
  font-size: 1.25rem;
}

/* Header buttons & icons formatting */
.icon-button-left {
  margin-right: 8px;
  font-size: 1.15rem;
}

.icon-small {
  font-size: 1.15rem;
}

.icon-display-large {
  font-size: 2.8rem;
  color: var(--color-white);
}

.dropzone-icon-symbol {
  font-size: 2.5rem;
  color: var(--color-zinc-muted);
  margin-bottom: 8px;
}

.modal-icon-symbol {
  font-size: 2.5rem;
  color: var(--color-white);
  margin-bottom: 8px;
}

.trend-icon-symbol {
  font-size: 0.8rem;
  vertical-align: middle;
}

.source-icon {
  font-size: 0.85rem;
  vertical-align: middle;
  margin-right: 4px;
}

.list-card-icon {
  font-size: 1.5rem;
  color: var(--color-zinc-muted);
}

.meta-icon {
  font-size: 0.9rem;
  vertical-align: middle;
  margin-right: 4px;
  color: var(--color-zinc-muted);
}

.header-icon-symbol {
  font-size: 1.35rem;
  vertical-align: middle;
  margin-right: 8px;
  color: var(--color-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

a {
  text-decoration: none;
  color: inherit;
}

button,
input,
select,
textarea {
  font-family: inherit;
  color: inherit;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]),
select,
textarea {
  width: 100%;
  min-height: 40px;
  padding: 10px 14px;
  background-color: var(--control-bg);
  border: 1px solid var(--control-border);
  border-radius: var(--radius);
  outline: none;
  color: var(--control-text);
  font-size: 0.9rem;
  line-height: 1.4;
  transition: var(--transition-smooth);
}

textarea {
  resize: vertical;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]):hover,
select:hover,
textarea:hover {
  background-color: var(--control-bg-hover);
}

input:not([type="checkbox"]):not([type="radio"]):not([type="file"]):focus,
select:focus,
textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-cyan-dim);
}

input::placeholder,
textarea::placeholder {
  color: var(--control-placeholder);
  opacity: 1;
}

input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.hidden {
  display: none;
}

/* Custom Minimalist Scrollbar */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: #27272a;
  border-radius: var(--radius);
}
::-webkit-scrollbar-thumb:hover {
  background: #3f3f46;
}

/* Common Card Utility */
.card {
  background-color: var(--card-matte);
  border: 1px solid var(--border-matte);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition-smooth);
  min-width: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.hover-lift:hover {
  background-color: var(--card-matte-hover);
  border-color: var(--border-focus);
}

/* Tab Views management */
.tab-view {
  display: none;
  animation: tab-fade-in 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.tab-view.active {
  display: block;
}