.tool-header{text-align:center;margin-bottom:40px}.header-badge{display:flex;justify-content:center;gap:12px;margin-bottom:24px;flex-wrap:wrap}.badge{background:linear-gradient(135deg, #10b981, #059669);color:white;padding:6px 18px;border-radius:40px;font-size:0.75rem;font-weight:500;box-shadow:0 2px 8px rgba(0,0,0,0.1)}.tool-header h1{font-size:2.2rem;font-weight:800;background:linear-gradient(135deg, #1e293b, #10b981);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:12px}.tool-header p{color:var(--gray-500);font-size:1rem}.core-stats{display:flex;justify-content:center;gap:24px;margin-bottom:32px;flex-wrap:wrap}.core-stat{background:white;border-radius:60px;padding:16px 28px;display:flex;align-items:center;gap:16px;box-shadow:0 4px 15px rgba(0,0,0,0.05);border:1px solid var(--gray-200)}.core-stat-icon{width:48px;height:48px;background:linear-gradient(135deg, #d1fae5, #a7f3d0);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#10b981;font-size:1.3rem}.core-stat-info{text-align:left}.core-stat-value{display:block;font-size:1.5rem;font-weight:700;color:var(--gray-800)}.core-stat-label{font-size:0.7rem;color:var(--gray-500)}.mode-tabs{display:flex;gap:16px;margin-bottom:32px;justify-content:center}.mode-tab{background:transparent;border:none;padding:16px 32px;cursor:pointer;transition:all 0.3s;border-radius:24px;text-align:center;min-width:200px}.mode-tab i{font-size:1.3rem;color:var(--gray-400);margin-bottom:8px;display:block}.mode-tab span{display:block;font-weight:600;color:var(--gray-600);margin-bottom:4px}.mode-tab small{font-size:0.65rem;color:var(--gray-400)}.mode-tab.active{background:linear-gradient(135deg, #10b981, #059669);box-shadow:0 8px 25px rgba(16,185,129,0.3)}.mode-tab.active i,.mode-tab.active span,.mode-tab.active small{color:white}.upload-card{background:linear-gradient(135deg, #fff, #f8fafc);border-radius:32px;padding:24px;border:1px solid var(--gray-200);margin-bottom:24px}.upload-area{border:2px dashed var(--gray-300);border-radius:24px;padding:60px 20px;text-align:center;cursor:pointer;transition:all 0.3s}.upload-area:hover{border-color:#10b981;background:var(--gray-50)}.upload-icon i{font-size:64px;color:var(--gray-400);margin-bottom:16px}.upload-text{font-size:1rem;color:var(--gray-600);margin-bottom:8px}.upload-hint{font-size:0.7rem;color:var(--gray-400);margin-bottom:20px}.upload-btn{margin-top:16px}.file-info-card{background:linear-gradient(135deg, #f0fdf4, #dcfce7);border-radius:24px;padding:20px;margin-bottom:24px;border:1px solid #bbf7d0}.file-info-header{display:flex;align-items:center;gap:8px;margin-bottom:16px;font-weight:600;color:#166534}.file-info-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:16px}.info-item{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.info-label{font-size:0.75rem;color:#166534;font-weight:500;width:70px}.info-value{font-size:0.8rem;color:#064e3b;word-break:break-all}.hex-preview-card{background:#1a1a2e;border-radius:24px;overflow:hidden;margin-top:24px}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;background:#2d2d44;border-bottom:1px solid rgba(255,255,255,0.1)}.preview-title{display:flex;align-items:center;gap:12px;color:white;font-weight:500}.preview-badge{background:#10b981;padding:2px 8px;border-radius:20px;font-size:0.7rem}.preview-actions{display:flex;gap:8px}.action-btn-sm{background:rgba(255,255,255,0.1);border:none;padding:6px 12px;border-radius:20px;color:#e0e0e0;font-size:0.7rem;cursor:pointer;transition:all 0.2s}.action-btn-sm:hover{background:#10b981;color:white}.hex-content{padding:20px;font-family:'Fira Code',monospace;font-size:12px;line-height:1.8;color:#a0a0c0;max-height:400px;overflow-y:auto}.hex-line{display:flex;gap:16px;margin-bottom:4px}.hex-offset{color:#10b981;width:60px}.hex-bytes{flex:1;word-break:break-all}.hex-ascii{color:#60a5fa}.preview-footer{padding:12px 20px;background:#2d2d44;border-top:1px solid rgba(255,255,255,0.1);display:flex;justify-content:space-between;font-size:0.7rem;color:#a0a0c0}.endian-btn{background:transparent;border:1px solid #10b981;color:#10b981;padding:2px 8px;border-radius:20px;cursor:pointer}.hex-input-card{background:linear-gradient(135deg, #fff, #f8fafc);border-radius:28px;padding:24px;border:1px solid var(--gray-200)}.input-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--gray-200)}.input-header i{color:#10b981;margin-right:8px}.input-actions{display:flex;gap:8px}.hex-textarea{width:100%;min-height:200px;padding:16px;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6;border:1px solid var(--gray-300);border-radius:20px;resize:vertical}.hex-textarea:focus{outline:none;border-color:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,0.1)}.input-footer{display:flex;gap:20px;margin-top:12px;font-size:0.7rem;color:var(--gray-500);flex-wrap:wrap}.validity-badge{padding:2px 10px;border-radius:20px}.validity-badge.valid{background:#d1fae5;color:#065f46}.validity-badge.invalid{background:#fee2e2;color:#991b1b}.convert-actions{text-align:center;margin:24px 0}.convert-btn{background:linear-gradient(135deg, #10b981, #059669);padding:14px 40px;font-size:1rem;border-radius:60px}.convert-result-card{background:linear-gradient(135deg, #f0fdf4, #dcfce7);border-radius:24px;padding:24px;text-align:center;border:1px solid #bbf7d0}.result-header{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:20px;color:#166534;font-weight:600}.result-info{display:flex;justify-content:center;gap:32px;margin-bottom:20px;flex-wrap:wrap}.result-row{display:flex;gap:8px}.btn-success{background:#10b981;color:white;border:none;padding:12px 32px;border-radius:60px;cursor:pointer;font-size:1rem;transition:all 0.3s}.btn-success:hover{background:#059669;transform:translateY(-2px)}.info-section{margin-top:32px}.info-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:16px;padding:16px;background:var(--gray-50);border-radius:20px}.info-item{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--gray-600)}.info-item i{color:#10b981}.info-note{margin-top:16px;padding:12px 16px;background:#fef3c7;border-radius:16px;font-size:0.75rem;color:#92400e}@media (max-width:900px){.mode-tab{min-width:auto;padding:12px 20px}.file-info-grid{grid-template-columns:1fr}.info-grid{grid-template-columns:repeat(2, 1fr)}}@media (max-width:480px){.core-stats{gap:12px}.core-stat{padding:12px 20px}.info-grid{grid-template-columns:1fr}.upload-area{padding:40px 16px}}