:root {
    /* Light Mode - 선명한 대비 적용 */
    --bg-color: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #475569;
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.1);
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.05);
    --card-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --input-bg: #ffffff;
    --input-text: #0f172a;
    --input-border: #cbd5e1;
    --modal-bg: #ffffff;
    --nav-text: #64748b;
    --item-bg: #f1f5f9;
}

[data-theme="dark"] {
    /* Dark Mode - 기존 감성 유지 */
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --card-bg: #1e293b;
    --card-border: rgba(255, 255, 255, 0.05);
    --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --input-bg: #1e293b;
    --input-text: #ffffff;
    --input-border: rgba(255, 255, 255, 0.1);
    --modal-bg: #1e293b;
    --nav-text: #94a3b8;
    --item-bg: rgba(30, 41, 59, 0.5);
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: background-color 0.3s, color 0.3s;
}

.glass {
    background: var(--glass-bg) !important;
    border-color: var(--glass-border) !important;
    backdrop-filter: blur(15px);
}

.card-theme {
    background-color: var(--card-bg) !important;
    border: 1px solid var(--card-border) !important;
    box-shadow: var(--card-shadow) !important;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.item-theme {
    background-color: var(--item-bg) !important;
    border: 1px solid var(--card-border) !important;
    transition: background-color 0.3s;
}

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

input, select, textarea {
    background-color: var(--input-bg) !important;
    color: var(--input-text) !important;
    border: 1px solid var(--input-border) !important;
}

.modal-card {
    background: var(--modal-bg) !important;
    color: var(--text-main) !important;
    box-shadow: var(--card-shadow) !important;
}

nav button {
    color: var(--nav-text);
}

nav button.tab-active {
    color: #fb923c;
}

/* 다크모드에서 흰색 글씨 강제되는 부분 수정 */
[data-theme="light"] .text-white:not(.fire-gradient *) {
    color: var(--text-main) !important;
}

/* 그라데이션 및 강조색 유지 */
.fire-gradient {
    background: linear-gradient(135deg, #fb923c 0%, #f43f5e 100%);
}
.fire-gradient .text-white, button.fire-gradient {
    color: #ffffff !important;
}

/* 불꽃 레벨별 전용 클래스 - 시인성 강화 */
.flame-core { border-radius: 50% 0 50% 50%; transform: rotate(-45deg); animation: flicker 0.15s infinite alternate; }
@keyframes flicker { from { transform: rotate(-45deg) scale(1); opacity: 0.9; } to { transform: rotate(-45deg) scale(1.05); opacity: 1; } }

.flame-lv1 { width: 1.5rem; height: 1.5rem; background: linear-gradient(to top, #ea580c, #fb923c); box-shadow: 0 0 15px rgba(234,88,12,0.6); }
.flame-lv2 { width: 2.5rem; height: 2.5rem; background: linear-gradient(to top, #f97316, #f87171); box-shadow: 0 0 25px rgba(249,115,22,0.7); }
.flame-lv3 { width: 3.5rem; height: 3.5rem; background: linear-gradient(to top, #dc2626, #fb7185); box-shadow: 0 0 35px rgba(220,38,38,0.8); }
.flame-lv4 { width: 4.5rem; height: 4.5rem; background: linear-gradient(to top, #1d4ed8, #0ea5e9, #22d3ee); box-shadow: 0 0 50px rgba(14, 165, 233, 0.8) !important; }
.flame-lv5 { width: 5.5rem; height: 5.5rem; background: linear-gradient(to top, #d97706, #fbbf24, #fef3c7); box-shadow: 0 0 60px rgba(251,191,36,1) !important; }