body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(120deg, #e3eaf2 0%, #f4f6f8 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}
.dynamic-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 320px;
    z-index: 0;
    pointer-events: none;
    opacity: 0.95;
    overflow: visible;
}
.dynamic-bg-svg {
    width: 100vw;
    height: 320px;
    display: block;
}
.art-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 320px;
    z-index: 1;
    pointer-events: none;
    opacity: 0.95;
    overflow: visible;
}
.animated-bg {
    width: 100vw;
    height: 320px;
    display: block;
}
.float-shape {
    position: absolute;
    z-index: 1;
    border-radius: 50%;
    opacity: 0.18;
    filter: blur(2px);
    animation: floatShape 7s ease-in-out infinite alternate;
}
.shape1 {
    width: 80px; height: 80px;
    background: linear-gradient(135deg, #1976d2 60%, #388e3c 100%);
    top: 60px; left: 8vw;
    animation-delay: 0s;
}
.shape2 {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, #b71c1c 60%, #1976d2 100%);
    top: 120px; right: 10vw;
    animation-delay: 2s;
}
.shape3 {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, #388e3c 60%, #b71c1c 100%);
    top: 30px; right: 30vw;
    animation-delay: 1s;
}
@keyframes floatShape {
    0% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-18px) scale(1.08); }
    100% { transform: translateY(0) scale(1); }
}
.subtitle {
    text-align: center;
    font-size: 1.15rem;
    color: #388e3c;
    margin-bottom: 18px;
    font-weight: 500;
    letter-spacing: 0.5px;
    background: linear-gradient(90deg, #1976d2 30%, #388e3c 70%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeIn 1.2s;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
.container {
    max-width: 700px;
    margin: 60px auto 40px auto;
    background: rgba(255,255,255,0.85);
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(25, 118, 210, 0.13), 0 1.5px 8px rgba(55,55,55,0.06);
    padding: 40px 32px 32px 32px;
    position: relative;
    z-index: 2;
    backdrop-filter: blur(4px);
}
.logo-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 10px;
}
.logo-icon {
    background: linear-gradient(135deg, #1976d2 60%, #388e3c 100%);
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.10);
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}
h1 {
    text-align: center;
    color: #2d3a4b;
    margin-bottom: 18px;
    font-size: 2.1rem;
    letter-spacing: 1px;
    font-weight: 700;
    background: linear-gradient(90deg, #1976d2 30%, #388e3c 70%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.controls {
    display: flex;
    justify-content: space-between;
    margin-bottom: 18px;
    gap: 10px;
}
#searchInput {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid #cfd8dc;
    border-radius: 6px;
    font-size: 1rem;
    background: rgba(255,255,255,0.7);
    transition: border 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 4px rgba(25, 118, 210, 0.04);
}
#searchInput:focus {
    border: 1.5px solid #1976d2;
    outline: none;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.10);
}
#exportBtn {
    background: linear-gradient(90deg, #1976d2 60%, #388e3c 100%);
    color: #fff;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(25, 118, 210, 0.08);
    transition: background 0.2s, box-shadow 0.2s;
}
#exportBtn:hover, #exportBtn:focus {
    background: linear-gradient(90deg, #125ea2 60%, #256029 100%);
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.15);
}
#itemForm {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    flex-wrap: wrap;
    background: rgba(25, 118, 210, 0.04);
    border-radius: 8px;
    padding: 12px 8px 8px 8px;
    box-shadow: 0 1px 4px rgba(25, 118, 210, 0.04);
}
#itemForm input[type="text"],
#itemForm input[type="number"] {
    padding: 10px 12px;
    border: 1.5px solid #cfd8dc;
    border-radius: 6px;
    font-size: 1rem;
    flex: 1 1 120px;
    background: rgba(255,255,255,0.8);
    transition: border 0.2s, box-shadow 0.2s;
}
#itemForm input:focus {
    border: 1.5px solid #1976d2;
    outline: none;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.10);
}
#addUpdateBtn, #cancelEditBtn {
    background: linear-gradient(90deg, #388e3c 60%, #1976d2 100%);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(56, 142, 60, 0.08);
    transition: background 0.2s, box-shadow 0.2s;
}
#addUpdateBtn:hover, #addUpdateBtn:focus {
    background: linear-gradient(90deg, #256029 60%, #125ea2 100%);
    box-shadow: 0 2px 8px rgba(56, 142, 60, 0.15);
}
#cancelEditBtn {
    background: linear-gradient(90deg, #b71c1c 60%, #1976d2 100%);
    margin-left: 0;
}
#cancelEditBtn:hover, #cancelEditBtn:focus {
    background: linear-gradient(90deg, #7f1313 60%, #125ea2 100%);
}
table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(250,251,252,0.95);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(25, 118, 210, 0.10), 0 1.5px 8px rgba(55,55,55,0.04);
    border: 1.5px solid #e3eaf2;
}
th, td {
    padding: 12px 10px;
    text-align: left;
    font-size: 1rem;
}
th {
    background: linear-gradient(90deg, #e3eaf2 60%, #f4f6f8 100%);
    cursor: pointer;
    user-select: none;
    font-weight: 600;
    letter-spacing: 0.5px;
}
tbody tr:nth-child(even) {
    background: #f4f6f8;
}
tbody tr:hover {
    background: #e3eaf2;
    transition: background 0.2s;
}
.actions-btn {
    background: linear-gradient(90deg, #1976d2 60%, #388e3c 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 6px 14px;
    margin-right: 4px;
    cursor: pointer;
    font-size: 0.98rem;
    font-weight: 500;
    box-shadow: 0 1px 4px rgba(25, 118, 210, 0.08);
    transition: background 0.2s, box-shadow 0.2s;
}
.actions-btn.edit {
    background: linear-gradient(90deg, #388e3c 60%, #1976d2 100%);
}
.actions-btn.delete {
    background: linear-gradient(90deg, #b71c1c 60%, #1976d2 100%);
}
.actions-btn.edit:hover, .actions-btn.edit:focus {
    background: linear-gradient(90deg, #256029 60%, #125ea2 100%);
}
.actions-btn.delete:hover, .actions-btn.delete:focus {
    background: linear-gradient(90deg, #7f1313 60%, #125ea2 100%);
}
::-webkit-scrollbar {
    width: 8px;
    background: #e3eaf2;
}
::-webkit-scrollbar-thumb {
    background: #cfd8dc;
    border-radius: 4px;
}
.footer-gradient {
    margin-top: 32px;
    padding: 16px 0 0 0;
    text-align: center;
    font-size: 1rem;
    color: #fff;
    background: linear-gradient(90deg, #1976d2 30%, #388e3c 70%);
    border-radius: 0 0 18px 18px;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.08);
    opacity: 0.92;
    letter-spacing: 1px;
}
.accent-bar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: 10px;
    background: linear-gradient(180deg, #1976d2 0%, #388e3c 100%);
    box-shadow: 2px 0 12px 0 rgba(25, 118, 210, 0.10);
    z-index: 10;
    border-radius: 0 8px 8px 0;
    opacity: 0.85;
    animation: accentBarGlow 3s ease-in-out infinite alternate;
}
@keyframes accentBarGlow {
    0% { box-shadow: 2px 0 12px 0 rgba(25, 118, 210, 0.10); }
    100% { box-shadow: 2px 0 32px 0 rgba(56, 142, 60, 0.18); }
}
.th-icon {
    font-size: 1.2em;
    margin-right: 6px;
    vertical-align: middle;
    filter: drop-shadow(0 1px 2px #1976d2aa);
}
.fab {
    position: fixed;
    right: 32px;
    bottom: 40px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1976d2 60%, #388e3c 100%);
    color: #fff;
    font-size: 2.2rem;
    font-weight: 700;
    border: none;
    box-shadow: 0 4px 24px rgba(25, 118, 210, 0.18), 0 0 0 0 #1976d2;
    animation: fabGlow 2.2s infinite alternate;
    cursor: pointer;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
    outline: none;
}
.fab:hover, .fab:focus {
    background: linear-gradient(135deg, #125ea2 60%, #256029 100%);
    box-shadow: 0 8px 32px rgba(25, 118, 210, 0.25);
    transform: scale(1.08);
}
.toast {
    position: fixed;
    left: 50%;
    bottom: 100px;
    transform: translateX(-50%);
    min-width: 220px;
    max-width: 90vw;
    background: linear-gradient(90deg, #1976d2 60%, #388e3c 100%);
    color: #fff;
    font-size: 1.05rem;
    padding: 14px 28px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(25, 118, 210, 0.18);
    opacity: 0;
    pointer-events: none;
    z-index: 200;
    text-align: center;
    letter-spacing: 0.5px;
    transition: opacity 0.4s, bottom 0.4s;
}
.toast.show {
    opacity: 1;
    pointer-events: auto;
    bottom: 120px;
}
.qty-btn {
    background: linear-gradient(135deg, #1976d2 60%, #388e3c 100%);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 6px;
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(25, 118, 210, 0.10);
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
}
.qty-btn:hover, .qty-btn:focus {
    background: linear-gradient(135deg, #125ea2 60%, #256029 100%);
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.18);
    transform: scale(1.12);
}
.qty-value {
    display: inline-block;
    min-width: 32px;
    text-align: center;
    font-size: 1.08rem;
    font-weight: 600;
    color: #1976d2;
    background: rgba(25, 118, 210, 0.06);
    border-radius: 6px;
    padding: 3px 8px;
    margin: 0 2px;
}
.animated-border {
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 32px rgba(25, 118, 210, 0.13), 0 1.5px 8px rgba(55,55,55,0.06);
    border: 4px solid transparent;
    border-radius: 22px;
    background-clip: padding-box, border-box;
    background-origin: padding-box, border-box;
    background-image: linear-gradient(120deg, #fff 0%, #fff 100%),
        linear-gradient(120deg, #1976d2, #388e3c, #b71c1c, #1976d2);
    background-size: 100% 100%, 300% 300%;
    background-position: 0 0, 0 0;
    animation: borderAnim 6s linear infinite;
}
@keyframes borderAnim {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 0 0, 100% 100%; }
}
.confetti-svg {
    position: fixed;
    left: 0; top: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    display: block;
}
@keyframes fabGlow {
    0% { box-shadow: 0 4px 24px rgba(25, 118, 210, 0.18), 0 0 0 0 #1976d2; }
    100% { box-shadow: 0 8px 32px rgba(25, 118, 210, 0.25), 0 0 16px 8px #388e3c44; }
}
@media (max-width: 900px) {
    .dynamic-bg, .dynamic-bg-svg {
        height: 200px;
        min-height: 120px;
    }
    .float-shape {
        display: none;
    }
    .container {
        max-width: 98vw;
        padding: 18px 4vw 18px 4vw;
    }
    .fab {
        right: 12px;
        bottom: 18px;
    }
    .animated-border {
        border-width: 2.5px;
        border-radius: 16px;
    }
}
@media (max-width: 600px) {
    .dynamic-bg, .dynamic-bg-svg {
        height: 120px;
        min-height: 80px;
    }
    .footer-gradient {
        font-size: 0.95rem;
        padding: 10px 0 0 0;
    }
    .container {
        padding: 10px 0 12px 0;
        margin: 24px 0 10px 0;
    }
    .logo-row {
        flex-direction: column;
        gap: 8px;
    }
    #itemForm {
        flex-direction: column;
        gap: 8px;
        padding: 8px 2px 4px 2px;
    }
    .controls {
        flex-direction: column;
        gap: 8px;
    }
    th, td {
        padding: 7px 4px;
        font-size: 0.97rem;
    }
    table {
        font-size: 0.97rem;
    }
    .fab {
        right: 8px;
        bottom: 8px;
        width: 44px;
        height: 44px;
        font-size: 1.5rem;
    }
    .accent-bar {
        width: 6px;
    }
    .toast {
        font-size: 0.98rem;
        padding: 10px 10vw;
    }
    .animated-border {
        border-width: 1.5px;
        border-radius: 10px;
    }
}
@media (max-width: 400px) {
    .container {
        padding: 2px 0 2px 0;
    }
    h1 {
        font-size: 1.2rem;
    }
}