/* ==========================================
   共通スタイル - Monster Hunter Wilds 護石管理システム
   ========================================== */

/* ==========================================
   CSS Custom Properties (Variables)
   ========================================== */
:root {
    /* Monster Hunter Wilds Theme Colors */
    --color-primary: #d4692a;
    --color-primary-dark: #a34d1f;
    --color-secondary: #6c757d;
    --color-secondary-dark: #495057;
    --color-danger: #c0392b;
    --color-danger-dark: #a02822;
    --color-success: #27ae60;
    --color-info: #3498db;

    /* MH Wilds specific colors */
    --mhw-orange: #d4692a;
    --mhw-orange-dark: #a34d1f;
    --mhw-brown-dark: #1a1614;
    --mhw-brown: #2d2620;
    --mhw-brown-light: #3d3530;
    --mhw-gold: #d4a752;
    --mhw-text: #e8e4df;
    --mhw-text-muted: #b8b4af;

    /* Colors - Neutral palette (adapted for dark theme) */
    --color-white: #e8e4df;
    --color-gray-50: #3d3530;
    --color-gray-100: #2d2620;
    --color-gray-200: #3d3530;
    --color-gray-300: #4d4540;
    --color-gray-400: #b8b4af;
    --color-gray-500: #c8c4bf;
    --color-gray-600: #d8d4cf;
    --color-gray-700: #e8e4df;

    /* Colors - Background variations */
    --color-bg-success: rgba(39, 174, 96, 0.1);
    --color-bg-error: rgba(192, 57, 43, 0.1);
    --color-bg-info: rgba(52, 152, 219, 0.1);

    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-2xl: 40px;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --line-height-base: 1.5;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.8;

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;

    /* Z-index scale */
    --z-base: 1;
    --z-dropdown: 10;
    --z-modal: 100;
    --z-tooltip: 200;
}

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

html {
    /* Improve text rendering */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    background: linear-gradient(135deg, var(--mhw-brown-dark) 0%, var(--mhw-brown) 100%);
    min-height: 100vh;
    color: var(--mhw-text);
}

/* ==========================================
   Layout Components
   ========================================== */

/* Container */
.container {
    background: rgba(29, 26, 20, 0.85);
    border: 2px solid var(--mhw-orange);
    box-shadow: 0 8px 32px rgba(212, 105, 42, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    animation: fadeIn var(--transition-slow);
}

/* ページ別コンテナ幅 */
.container--narrow {
    max-width: 500px;
}

.container--wide {
    max-width: 1000px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   Typography
   ========================================== */
h1 {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    text-align: center;
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-xl);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
    text-align: center;
    font-weight: 600;
}

.subtitle {
    text-align: center;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
    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 (BEM Methodology)
   ========================================== */

/* Base button styles */
.btn,
button {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-base), opacity var(--transition-base);
    margin-top: var(--spacing-sm);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: inherit;
    line-height: var(--line-height-base);
}

/* Primary button variant */
.btn--primary,
button:not([class*="btn--"]) {
    background: linear-gradient(135deg, var(--mhw-orange) 0%, var(--mhw-orange-dark) 100%);
    color: var(--mhw-text);
    border: 2px solid var(--mhw-gold);
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 12px rgba(212, 105, 42, 0.4);
}

.btn--primary:hover:not(:disabled),
button:hover:not(:disabled):not([class*="btn--"]) {
    background: linear-gradient(135deg, var(--mhw-orange-dark) 0%, var(--mhw-orange) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(212, 105, 42, 0.6);
}

/* Secondary button variant */
.btn--secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-white);
}

.btn--secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Danger button variant */
.btn--danger {
    background: linear-gradient(135deg, var(--color-danger) 0%, var(--color-danger-dark) 100%);
    color: var(--color-white);
}

.btn--danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Disabled state */
.btn:disabled,
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Focus styles for accessibility */
.btn:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================
   Message Components (BEM Methodology)
   ========================================== */

/* Base message styles */
.message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    display: none;
    text-align: center;
    line-height: var(--line-height-relaxed);
    white-space: pre-line;
}

.message.show {
    display: block;
    animation: slideDown var(--transition-base);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Error message variant */
.message--error,
.error-message {
    color: var(--color-danger);
    background: var(--color-bg-error);
    border-left: 4px solid var(--color-danger);
}

.error-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    display: none;
    text-align: center;
    line-height: var(--line-height-relaxed);
}

.error-message.show {
    display: block;
    animation: slideDown var(--transition-base);
}

/* Success message variant */
.message--success,
.success-message {
    color: var(--color-success);
    background: var(--color-bg-success);
    border-left: 4px solid var(--color-success);
}

.success-message {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    display: none;
    text-align: center;
    line-height: var(--line-height-relaxed);
}

.success-message.show {
    display: block;
    animation: slideDown var(--transition-base);
}

/* Info message variant */
.message--info,
.info-message {
    color: var(--color-info);
    background: var(--color-bg-info);
    border-left: 4px solid var(--color-info);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    text-align: center;
    line-height: var(--line-height-relaxed);
}

/* ==========================================
   Loading Spinner Component
   ========================================== */
.spinner {
    border: 3px solid var(--color-gray-100);
    border-top: 3px solid var(--color-primary);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-lg) auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* ==========================================
   User Info Component (BEM Methodology)
   ========================================== */
.user-info {
    background: var(--color-gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    display: none;
}

.user-info.show {
    display: block;
}

.user-info__email,
.user-email {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    word-break: break-word;
}

.user-info__status,
.user-status {
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 600px) {
    .container {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    h1 {
        font-size: var(--font-size-xl);
    }

    h2 {
        font-size: var(--font-size-lg);
    }

    .btn,
    button {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        box-shadow: none;
        max-width: 100%;
    }

    .btn,
    button {
        display: none;
    }
}

/* ==========================================
   Reduced Motion Support (Accessibility)
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================
   High Contrast Mode Support (Accessibility)
   ========================================== */
@media (prefers-contrast: high) {
    .btn,
    button {
        border: 2px solid currentColor;
    }

    .message {
        border: 2px solid currentColor;
    }
}