:root {
    --bg: #05070f;
    --bg-secondary: #0a1121;
    --bg-tertiary: #0f1a36;
    --panel: rgba(12, 21, 44, 0.88);
    --panel-solid: #0d1730;
    --panel-border: rgba(98, 146, 255, 0.28);
    --text-main: #e9f4ff;
    --text-soft: #9fb7d8;
    --accent-cyan: #39f7ff;
    --accent-violet: #7b6bff;
    --accent-green: #20f9b8;
    --accent-red: #ff4f7a;
    --field-bg: #091227;
    --field-border: rgba(124, 161, 255, 0.3);
    --table-head: #111c38;
    --table-row-hover: rgba(72, 107, 191, 0.2);
    --focus-ring: rgba(57, 247, 255, 0.22);
    --nav-bg-a: rgba(8, 13, 29, 0.98);
    --nav-bg-b: rgba(6, 10, 23, 0.98);
    --neon-shadow: 0 0 18px rgba(57, 247, 255, 0.26), 0 0 28px rgba(123, 107, 255, 0.22);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    background:
        radial-gradient(circle at 18% 12%, rgba(57, 247, 255, 0.14), transparent 42%),
        radial-gradient(circle at 84% 2%, rgba(123, 107, 255, 0.2), transparent 38%),
        linear-gradient(145deg, var(--bg) 0%, var(--bg-secondary) 46%, var(--bg-tertiary) 100%);
}

a {
    color: inherit;
}

.mobile-topbar {
    display: none;
}

.nav-backdrop {
    display: none;
}

nav {
    width: 280px;
    background: linear-gradient(180deg, var(--nav-bg-a) 0%, var(--nav-bg-b) 100%);
    padding: 22px 0;
    box-shadow: 8px 0 35px rgba(0, 0, 0, 0.45);
    border-right: 1px solid rgba(88, 128, 230, 0.22);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 120;
    display: flex;
    flex-direction: column;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 12px 14px;
    padding: 10px 10px 18px;
    border-bottom: 1px solid rgba(125, 154, 224, 0.2);
    position: relative;
}

.logo::before {
    content: "";
    position: absolute;
    inset: 10px 18px 18px;
    background: radial-gradient(circle, rgba(57, 247, 255, 0.18), transparent 72%);
    filter: blur(12px);
    pointer-events: none;
}

.brand-logo {
    width: 160px;
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 14px;
    opacity: 0.9;
    mix-blend-mode: normal;
    background: transparent;
    filter: saturate(1.25) contrast(1.08) drop-shadow(0 0 10px rgba(57, 247, 255, 0.34)) drop-shadow(0 0 20px rgba(123, 107, 255, 0.24));
    position: relative;
    z-index: 1;
}

nav a {
    display: block;
    color: #d0e2ff;
    text-decoration: none;
    padding: 14px 18px;
    margin: 7px 10px;
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: 0.2px;
    border: 1px solid transparent;
    transition: all 0.25s ease;
}

nav a:hover {
    color: #f6fdff;
    border-color: rgba(95, 149, 255, 0.36);
    background: linear-gradient(120deg, rgba(57, 247, 255, 0.14), rgba(123, 107, 255, 0.16));
    transform: translateX(3px);
    box-shadow: var(--neon-shadow);
}

nav a.active {
    color: #ffffff;
    border-color: rgba(95, 149, 255, 0.45);
    background: linear-gradient(120deg, rgba(57, 247, 255, 0.2), rgba(123, 107, 255, 0.26));
    box-shadow: var(--neon-shadow);
}

#appContainer {
    margin-left: 280px;
    padding: 34px;
    transition: margin-left 0.3s ease;
    width: calc(100% - 280px);
}

section {
    background: var(--panel);
    backdrop-filter: blur(8px);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--panel-border);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
    margin-bottom: 26px;
    width: 100%;
}

.site-footer {
    margin-top: 4px;
    margin-bottom: 8px;
    padding: 14px 16px;
    text-align: center;
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    background: rgba(10, 20, 40, 0.7);
    color: var(--text-soft);
    font-size: 13px;
    letter-spacing: 0.4px;
}

.site-footer p {
    margin: 0;
}

h2,
h3 {
    color: var(--text-main);
    font-weight: 700;
}

h2 {
    margin-bottom: 24px;
    font-size: 24px;
    border-bottom: 1px solid rgba(133, 165, 240, 0.24);
    padding-bottom: 14px;
}

h3 {
    margin-bottom: 20px;
    font-size: 24px;
}

.status {
    background: linear-gradient(135deg, #1f2f56 0%, #16243f 100%);
    color: #ffffff;
    text-align: center;
    border-radius: 14px;
    border: 1px solid rgba(98, 146, 255, 0.34);
    padding: 28px;
    margin-bottom: 28px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
    transition: background 0.25s ease, box-shadow 0.25s ease;
}

.status.status-not-checked {
    background: linear-gradient(135deg, #203357 0%, #15243f 100%);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
}

.status.status-checked-in {
    background: linear-gradient(135deg, #0f5a5c 0%, #0f3f50 100%);
    box-shadow: 0 12px 24px rgba(32, 249, 184, 0.22);
}

.status.status-checked-out {
    background: linear-gradient(135deg, #334372 0%, #1f2d56 100%);
    box-shadow: 0 12px 24px rgba(123, 107, 255, 0.24);
}

.status h2 {
    color: #dff5ff;
    border: none;
    margin-bottom: 8px;
    padding-bottom: 0;
    opacity: 0.95;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

.status p {
    font-size: 31px;
    font-weight: 800;
    letter-spacing: 0.3px;
}

.inputgroup {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 26px;
}

.inputgroup label {
    width: 100%;
    font-weight: 600;
    color: var(--text-soft);
    margin-bottom: -10px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.inputgroup input {
    flex: 1;
    min-width: 250px;
    padding: 14px 16px;
    border: 1px solid var(--field-border);
    border-radius: 12px;
    font-size: 15px;
    transition: all 0.2s ease;
    outline: none;
    background: var(--field-bg);
    color: var(--text-main);
}

.inputgroup input::placeholder {
    color: #7f95b7;
}

.inputgroup input:focus {
    border-color: rgba(57, 247, 255, 0.65);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.button-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.button-group button {
    flex: 1;
    min-width: 170px;
    padding: 16px;
    font-size: 15px;
    font-weight: 700;
    border: 1px solid rgba(160, 193, 255, 0.26);
    border-radius: 12px;
    cursor: pointer;
    color: #f5fcff;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
}

.button-group button:hover {
    transform: translateY(-2px);
    filter: brightness(1.04);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.36), var(--neon-shadow);
}

#checkInBtn {
    background: linear-gradient(135deg, #0f7a65, #0d4d52);
}

#checkOutBtn {
    background: linear-gradient(135deg, #8c2b47, #582137);
}

#locationBtn {
    background: linear-gradient(135deg, #2a5f9a, #2b3678);
}

.previous-history {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 22px;
}

.monthfilter {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.monthfilter label {
    color: var(--text-soft);
    font-size: 13px;
    letter-spacing: 0.8px;
}

.monthfilter input {
    padding: 11px 12px;
    border: 1px solid var(--field-border);
    border-radius: 10px;
    background: var(--field-bg);
    color: var(--text-main);
}

.previousbtn {
    display: flex;
    gap: 12px;
}

.previousbtn button {
    padding: 12px 20px;
    border: 1px solid rgba(150, 182, 255, 0.28);
    border-radius: 10px;
    font-weight: 600;
    color: #f5fcff;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    font-size: 14px;
}

#clear-record {
    background: linear-gradient(135deg, #85273f, #5a2134);
}

#export-csv {
    background: linear-gradient(135deg, #0f6f58, #0c4a4b);
}

.previousbtn button:hover {
    transform: translateY(-1px);
    box-shadow: var(--neon-shadow);
}

.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: 14px;
    border: 1px solid var(--field-border);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.28);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--panel-solid);
}

thead {
    background: var(--table-head);
    color: #e5f3ff;
}

th {
    padding: 16px 22px;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.7px;
    font-weight: 700;
}

td {
    padding: 14px 22px;
    text-align: left;
    border-bottom: 1px solid rgba(117, 149, 224, 0.2);
    color: #d5e5fb;
}

tbody tr:hover {
    background-color: var(--table-row-hover);
}

.btn-edit {
    background-color: #806126;
    color: #fff8eb;
}

.btn-delete {
    background-color: #8b2744;
    color: #ffffff;
}

.btn-edit,
.btn-delete {
    padding: 8px 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    margin-right: 6px;
    transition: opacity 0.2s;
}

.btn-edit:hover,
.btn-delete:hover {
    opacity: 0.85;
}

.menu-toggle {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    border: 1px solid rgba(100, 145, 255, 0.42);
    background: linear-gradient(145deg, rgba(10, 24, 48, 0.9), rgba(6, 14, 29, 0.95));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    box-shadow: var(--neon-shadow);
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #d8f8ff;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.open span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

body.nav-lock {
    overflow: hidden;
}

@media (max-width: 1200px) {
    nav {
        width: 230px;
    }

    #appContainer {
        margin-left: 230px;
        width: calc(100% - 230px);
        padding: 26px;
    }

    .brand-logo {
        width: 132px;
    }
}

@media (max-width: 900px) {
    .mobile-topbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 64px;
        display: flex;
        align-items: center;
        padding: 0 14px;
        z-index: 170;
        background: linear-gradient(180deg, rgba(5, 10, 24, 0.95), rgba(5, 10, 24, 0.7));
        backdrop-filter: blur(8px);
        border-bottom: 1px solid rgba(110, 153, 255, 0.26);
    }

    .nav-backdrop {
        position: fixed;
        inset: 0;
        display: block;
        background: rgba(3, 6, 15, 0.68);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s ease;
        z-index: 130;
    }

    .nav-backdrop.show {
        opacity: 1;
        pointer-events: auto;
    }

    nav {
        width: min(320px, 86vw);
        transform: translateX(-104%);
        transition: transform 0.24s ease;
        z-index: 160;
        border-right: 1px solid rgba(110, 153, 255, 0.34);
    }

    nav.nav-open {
        transform: translateX(0);
    }

    nav a {
        margin: 8px 12px;
    }

    #appContainer {
        margin-left: 0;
        width: 100%;
        padding: 84px 14px 20px;
    }

    section {
        padding: 22px 16px;
    }

    .button-group button,
    .inputgroup input {
        width: 100%;
    }

    .previous-history {
        flex-direction: column;
        align-items: stretch;
    }

    .previousbtn {
        flex-direction: column;
    }
}

@media (max-width: 560px) {
    h2,
    h3 {
        font-size: 20px;
    }

    .status p {
        font-size: 25px;
    }

    th,
    td {
        padding: 12px 12px;
    }
}