/* ===================================
   Game Common - 統一テーマ
   各ゲームの styles.css の後に読み込み、
   ダークテーマをライトテーマに上書きする
   =================================== */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

/* ===================================
   Body Override
   =================================== */

body {
    font-family: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===================================
   Game Container - navbar分の余白
   =================================== */

.game-container {
    padding-top: 80px;
}

/* ===================================
   Game Header - Light Theme
   =================================== */

.game-header {
    background: white;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    backdrop-filter: none;
}

.game-header h1 {
    color: var(--gray-800);
    text-shadow: none;
    font-size: 1.5rem;
}

/* ===================================
   Buttons - Light Theme
   =================================== */

.btn {
    box-shadow: var(--shadow-sm);
    font-family: inherit;
}

.btn:hover {
    box-shadow: var(--shadow);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.btn-danger {
    background: #ef4444;
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-gold {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.btn-gold:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-success {
    background: #10b981;
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-large {
    padding: 14px 32px;
    font-size: 1.1rem;
}

.btn-small {
    padding: 6px 14px;
    font-size: 0.85rem;
}

/* ===================================
   Home Link
   =================================== */

.home-link {
    color: var(--gray-600);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
}

.home-link:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

/* ===================================
   Game Info / Stats
   =================================== */

.game-info-panel {
    background: white;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    color: var(--gray-800);
}

.game-status {
    color: var(--gray-600);
}

.current-turn {
    color: var(--gray-800);
}

.game-mode {
    color: var(--gray-500);
}

.move-count {
    color: var(--gray-500);
}

.player-name {
    color: var(--gray-800);
}

.player-rank {
    color: var(--gray-500);
}

.info-label {
    color: var(--gray-500);
}

.info-value {
    color: var(--gray-800);
}

.moves-counter, .timer {
    background: var(--gray-100);
    color: var(--gray-700);
}

.label {
    color: var(--gray-500);
}

/* ===================================
   Mode Dropdown - Light Theme
   =================================== */

.mode-dropdown-content {
    background: white;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
}

.dropdown-title {
    color: var(--gray-500);
}

.dropdown-item {
    color: var(--gray-700);
}

.dropdown-item:hover {
    background: var(--primary-bg);
    color: var(--primary);
}

.dropdown-item.active {
    background: var(--primary-bg);
    color: var(--primary);
}

/* ===================================
   Modal - Light Theme
   =================================== */

.modal {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: white;
    color: var(--gray-800);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
}

.modal-content h2 {
    color: var(--gray-800);
}

.modal-content p {
    color: var(--gray-600);
}

.modal-content label {
    color: var(--gray-600);
}

.modal-content input[type="text"] {
    background: white;
    color: var(--gray-800);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-family: inherit;
}

.modal-content input[type="text"]::placeholder {
    color: var(--gray-400);
}

.modal-content input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Ranking */
.ranking-content {
    color: var(--gray-800);
}

.ranking-list {
    color: var(--gray-700);
}

.ranking-tabs .ranking-tab,
.ranking-type-tabs .type-tab-btn,
.ranking-tabs .tab-btn {
    background: var(--gray-100);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.ranking-tabs .ranking-tab.active,
.ranking-type-tabs .type-tab-btn.active,
.ranking-tabs .tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Result content */
.result-content {
    color: var(--gray-800);
}

/* Online status bars */
.online-status,
.battle-status,
.online-info {
    background: white;
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
    box-shadow: var(--shadow-sm);
}

.vs-label {
    color: var(--gray-400);
}

/* Controls help */
.controls-help {
    color: var(--gray-500);
}

.mobile-controls-help {
    color: var(--gray-500);
}

/* ===================================
   Score/Result items
   =================================== */

.result-score .score-value {
    color: var(--gray-800);
}

.result-score .score-separator {
    color: var(--gray-400);
}

.result-details {
    color: var(--gray-600);
}

.result-info .result-label {
    color: var(--gray-500);
}

.result-info .result-value {
    color: var(--gray-800);
}

/* Matching animation */
.matching-animation p {
    color: var(--gray-600);
}

.waiting-info {
    color: var(--gray-500);
}

/* Spinner */
.spinner,
.thinking-spinner {
    border-color: var(--gray-200);
    border-top-color: var(--primary);
}

/* ===================================
   Promote/Promotion content
   =================================== */

.promote-content,
.promotion-content {
    color: var(--gray-800);
}

.promotion-btn {
    background: white;
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
}

.promotion-btn:hover {
    background: var(--primary-bg);
    border-color: var(--primary);
}

/* Mode options (radio buttons) */
.mode-option {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    color: var(--gray-700);
}

.mode-option:hover {
    background: var(--primary-bg);
    border-color: var(--primary);
}

.mode-option:has(input[type="radio"]:checked) {
    background: var(--primary-bg);
    border-color: var(--primary);
    color: var(--primary);
}

.battle-description,
.online-description {
    color: var(--gray-600);
}

/* ===================================
   Freecell card slots - Light Theme
   =================================== */

.free-cell,
.home-cell {
    background: rgba(0, 0, 0, 0.06);
    border: 2px dashed var(--gray-300);
}

.free-cell:hover,
.home-cell:hover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.free-cell.highlight,
.home-cell.highlight {
    border-color: #f59e0b;
    box-shadow: 0 0 12px rgba(245, 158, 11, 0.3);
}

.home-cell[data-suit="hearts"],
.home-cell[data-suit="diamonds"] {
    color: rgba(220, 38, 38, 0.35);
}

.home-cell[data-suit="clubs"],
.home-cell[data-suit="spades"] {
    color: rgba(15, 23, 42, 0.2);
}

/* ===================================
   Ranking interior - Light Theme
   =================================== */

.ranking-item {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
}

.ranking-item:hover {
    background: var(--gray-100);
}

.ranking-item.gold {
    background: linear-gradient(135deg, rgba(245,158,11,0.1) 0%, rgba(245,158,11,0.05) 100%);
    border: 2px solid rgba(245, 158, 11, 0.4);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.1);
}

.ranking-item.silver {
    background: linear-gradient(135deg, rgba(148,163,184,0.15) 0%, rgba(148,163,184,0.07) 100%);
    border: 2px solid rgba(148, 163, 184, 0.4);
    box-shadow: 0 2px 8px rgba(148, 163, 184, 0.1);
}

.ranking-item.bronze {
    background: linear-gradient(135deg, rgba(180,100,45,0.1) 0%, rgba(180,100,45,0.05) 100%);
    border: 2px solid rgba(180, 100, 45, 0.4);
    box-shadow: 0 2px 8px rgba(180, 100, 45, 0.1);
}

.ranking-name { color: var(--gray-700); }
.ranking-score { color: var(--primary); font-weight: 600; }
.ranking-max-tile { color: var(--gray-500); }
.ranking-date { color: var(--gray-400); }

.ranking-rank.gold { color: #d97706; text-shadow: none; }
.ranking-rank.silver { color: var(--gray-500); text-shadow: none; }
.ranking-rank.bronze { color: #92400e; text-shadow: none; }

.no-ranking { color: var(--gray-400); }
.loading { color: var(--gray-500); }

/* ===================================
   Ranking input section - Light Theme
   =================================== */

.ranking-input {
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}

.ranking-input label { color: var(--gray-600); }

.ranking-input input[type="text"],
.ranking-input input:not([type]) {
    background: white;
    color: var(--gray-800);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    width: 100%;
}

.ranking-input input::placeholder { color: var(--gray-400); }

.ranking-input input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* result-value (2048 result score) */
.result-value { color: var(--gray-800); }
.result-label { color: var(--gray-500); }

/* ===================================
   Navigation (共通ナビバー)
   =================================== */

.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 3000;
    transition: box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    padding: 0 24px;
}

.nav-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.3px;
    flex-shrink: 0;
}

.nav-logo:hover { opacity: 0.8; }

.nav-menu {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-menu > li > a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--gray-600);
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 0;
    position: relative;
    transition: color 0.2s;
}

.nav-menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--primary);
    transition: width 0.2s;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--primary);
}

.nav-menu > li > a:hover::after,
.nav-menu > li > a.active::after {
    width: 100%;
}

/* ドロップダウン（ナビバー） */
.nav-dropdown { position: relative; }

.nav-dropdown-toggle .fa-chevron-down {
    font-size: 0.58rem;
    transition: transform 0.2s;
}

.nav-dropdown:hover .nav-dropdown-toggle .fa-chevron-down {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: 200px;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
    z-index: 3500;
    list-style: none;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    font-size: 0.87rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: 8px;
    transition: all 0.15s;
    white-space: nowrap;
}

.nav-dropdown-menu li a::after { display: none !important; }

.nav-dropdown-menu li a:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.nav-dropdown-menu li a.active {
    color: var(--primary);
    background: #eff6ff;
    font-weight: 600;
}

/* ハンバーガー */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--gray-700);
    transition: all 0.3s;
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
    .nav-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        top: 60px; left: 0; right: 0;
        background: white;
        flex-direction: column;
        align-items: center;
        gap: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: all 0.3s;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        max-height: 500px;
        padding: 12px 0;
    }

    .nav-menu > li { width: 100%; text-align: center; }
    .nav-menu > li > a { justify-content: center; padding: 12px 24px; width: 100%; }

    .nav-dropdown-menu {
        position: static;
        opacity: 1; visibility: visible;
        transform: none;
        box-shadow: none; border: none;
        border-top: 1px solid var(--gray-100);
        border-radius: 0;
        background: var(--gray-50);
        padding: 4px 0;
        min-width: unset;
    }

    .nav-dropdown:hover .nav-dropdown-menu { transform: none; }
    .nav-dropdown-menu li a { justify-content: center; }

    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    .game-header {
        padding: 12px 16px;
    }

    .game-header h1 {
        font-size: 1.2rem;
    }
}