.date-tool-wrapper { --p-bg: #ffffff; --p-border: #e2e8f0; --p-primary: #f43f5e; --p-text: #0f172a; width: 100%; max-width: 900px; margin: 0 auto; background: var(--p-bg); border-radius: 24px; padding: 32px; border: 1px solid var(--p-border); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); transition: 0.3s; }
.date-header { font-size: 1.5rem; font-weight: 600; color: var(--p-text); margin-bottom: 8px; display: flex; align-items: center; gap: 12px; }
.date-badge { background: #ffe4e6; color: #e11d48; padding: 4px 12px; border-radius: 30px; font-size: 0.8rem; font-weight: 500; }
.date-subtitle { color: #64748b; font-size: 0.95rem; padding-bottom: 16px; border-bottom: 1px solid var(--p-border); margin-bottom: 24px; }

.date-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.date-tab-btn { padding: 10px 20px; border-radius: 12px; font-weight: 600; font-size: 0.95rem; cursor: pointer; border: 1px solid #cbd5e1; background: var(--p-bg); color: #64748b; transition: 0.2s; }
.date-tab-btn:hover { border-color: var(--p-primary); color: var(--p-primary); }
.date-tab-btn.active { background: var(--p-primary); color: white; border-color: var(--p-primary); box-shadow: 0 4px 12px rgba(244, 63, 94, 0.2); }

.date-panel { display: none; background: #f8fafc; padding: 24px; border-radius: 16px; border: 1px solid var(--p-border); transition: 0.3s; }
.date-panel.active { display: block; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

.date-control-group { margin-bottom: 20px; }
.date-control-group label { display: block; font-weight: 600; margin-bottom: 8px; color: var(--p-text); font-size: 0.95rem; }
.date-input { width: 100%; padding: 12px 16px; background: #ffffff; border: 1px solid #cbd5e1; color: var(--p-text); border-radius: 8px; outline: none; font-size: 1.1rem; font-family: monospace; transition: 0.2s; cursor: text; }
.date-input:focus { border-color: var(--p-primary); box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.1); }
input[type="date"]::-webkit-calendar-picker-indicator { cursor: pointer; opacity: 0.6; transition: 0.2s; }
input[type="date"]::-webkit-calendar-picker-indicator:hover { opacity: 1; }

.date-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media(max-width: 768px) { 
    .date-grid { grid-template-columns: 1fr; } 
    .date-tool-wrapper { padding: 20px; border-radius: 16px; }
}

.result-box { margin-top: 24px; padding: 20px; background: #ffffff; border-radius: 12px; border: 2px dashed var(--p-border); text-align: center; }
.result-value { font-size: 2.5rem; font-weight: 700; color: var(--p-primary); margin: 8px 0; font-family: monospace; }
.result-desc { color: #64748b; font-size: 0.95rem; display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.result-desc span { background: #f1f5f9; padding: 4px 10px; border-radius: 6px; }

[data-theme="dark"] .date-tool-wrapper { background: #1e293b !important; border-color: #334155 !important; }
[data-theme="dark"] .date-tab-btn { background: #0f172a; border-color: #475569; color: #cbd5e1; }
[data-theme="dark"] .date-tab-btn.active { background: var(--p-primary); color: white; border-color: var(--p-primary); }
[data-theme="dark"] .date-panel { background: #0f172a !important; border-color: #475569 !important; }
[data-theme="dark"] .date-input { background: #1e293b !important; border-color: #475569 !important; color: #f8fafc; }
[data-theme="dark"] input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(1); }
[data-theme="dark"] .result-box { background: #1e293b; border-color: #475569; }
[data-theme="dark"] .result-desc span { background: #0f172a; color: #cbd5e1; border: 1px solid #334155; }