/*
Theme Name: Diver Child - 相続LP
Theme URI: https://souzoku.nakajima-gyosei.jp
Description: 中島進行政書士事務所 相続専門ランディングページ用 Diver子テーマ
Author: Nakajima Gyosei Office
Author URI: https://souzoku.nakajima-gyosei.jp
Template: diver
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: diver-child-souzoku
*/

/* ==========================================================================
   Design System — CSS Custom Properties
   ========================================================================== */

:root {
  /* --- Colors --- */
  --color-primary: #1B5E3B;
  --color-primary-light: #2E7D52;
  --color-primary-dark: #134429;
  --color-primary-bg: rgba(27, 94, 59, 0.06);

  --color-secondary: #C9A84C;
  --color-secondary-light: #D4BA6A;
  --color-secondary-dark: #A88B36;

  --color-accent-red: #D4534B;

  --color-bg: #FAFAF7;
  --color-bg-alt: #F0EDE6;
  --color-bg-dark: #1A1A2E;
  --color-bg-card: #FFFFFF;

  --color-text: #2D2D2D;
  --color-text-secondary: #6B6B6B;
  --color-text-light: #999999;
  --color-text-on-dark: #F0EDE6;
  --color-text-on-primary: #FFFFFF;

  --color-border: #E0DDD6;
  --color-border-light: #EEEAE3;

  /* --- Typography --- */
  --font-serif: 'Noto Serif JP', 'Yu Mincho', 'YuMincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  --font-accent: 'Inter', var(--font-sans);

  --fs-hero: clamp(2rem, 5vw, 3.5rem);
  --fs-h1: clamp(1.75rem, 4vw, 2.75rem);
  --fs-h2: clamp(1.5rem, 3.5vw, 2.25rem);
  --fs-h3: clamp(1.25rem, 3vw, 1.75rem);
  --fs-h4: clamp(1.1rem, 2.5vw, 1.375rem);
  --fs-body: clamp(0.938rem, 2vw, 1.063rem);
  --fs-small: clamp(0.813rem, 1.5vw, 0.875rem);
  --fs-caption: 0.75rem;

  --lh-heading: 1.4;
  --lh-body: 1.85;
  --ls-heading: 0.04em;

  /* --- Spacing --- */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-section: clamp(4rem, 8vw, 7rem);

  /* --- Layout --- */
  --max-width: 1100px;
  --max-width-narrow: 800px;
  --container-padding: clamp(1rem, 4vw, 2rem);

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 24px rgba(201, 168, 76, 0.25);

  /* --- Radius --- */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* --- Transitions --- */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* LP ページ全体ラッパー */
.lp-page {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

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

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

/* スクロールバーカスタマイズ */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}