/* ============================================================
   Reset & Variables
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --red:        #C41230;
    --red-dark:   #9B0E26;
    --black:      #1A1A1A;
    --white:      #FFFFFF;
    --gray-bg:    #F4F5F7;
    --gray-mid:   #DEDEDE;
    --gray-text:  #777777;
    --text:       #222222;
    --green:      #278046;
    --green-dark: #1A5C33;
    --orange:     #C97A00;
    --blue:       #1A6FA8;
    --radius:     4px;
    --shadow:     0 2px 10px rgba(0,0,0,0.09);
    --font:       'Segoe UI', Arial, Helvetica, sans-serif;
}

body {
    font-family: var(--font);
    background:  var(--gray-bg);
    color:       var(--text);
    font-size:   14px;
    line-height: 1.5;
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
    background:  var(--black);
    padding:     0 28px;
    display:     flex;
    align-items: center;
    justify-content: space-between;
    height:      56px;
    box-shadow:  0 2px 6px rgba(0,0,0,0.35);
    position:    sticky;
    top:         0;
    z-index:     100;
}

.navbar-brand {
    display:     flex;
    align-items: center;
    gap:         12px;
    color:       var(--white);
    font-size:   16px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.nav-logo-mark {
    width:  26px;
    height: 26px;
    background: var(--red);
    clip-path: polygon(0 0, 100% 0, 100% 65%, 50% 100%, 0 65%);
    flex-shrink: 0;
}

.navbar-links {
    display: flex;
    gap:     4px;
}

.navbar-links a {
    color:       rgba(255,255,255,0.72);
    text-decoration: none;
    padding:     8px 14px;
    border-radius: var(--radius);
    font-size:   13px;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition:  color 0.15s, background 0.15s;
}

.navbar-links a:hover { color: var(--white); background: rgba(255,255,255,0.1); }
.navbar-links a.active { color: var(--white); background: var(--red); }

/* ============================================================
   Container & Card
   ============================================================ */
.container {
    max-width: 1140px;
    margin:    28px auto;
    padding:   0 24px;
    display:   flex;
    flex-direction: column;
    gap:       28px;
}

.card {
    background:    var(--white);
    border-radius: var(--radius);
    box-shadow:    var(--shadow);
    overflow:      hidden;
}

/* ============================================================
   Section Headers
   ============================================================ */
.section-header {
    padding:     13px 22px;
    background:  var(--black);
}

.section-header h2 {
    font-size:   13px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color:       var(--white);
    padding-left: 12px;
}

.receive-header h2 { border-left: 4px solid var(--green); }
.deploy-header  h2 { border-left: 4px solid var(--red);   }
.report-header  h2 { border-left: 4px solid var(--blue);  }

/* ============================================================
   Alerts
   ============================================================ */
.alert {
    padding:  10px 18px;
    margin:   14px 22px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
}
.alert-success { background: #EBF7EF; color: #1D5F34; border: 1px solid #9AD5B0; }
.alert-error   { background: #FDECEA; color: #8B0E22; border: 1px solid #F0A8A8; }
.alert-warning { background: #FEF8E7; color: #7A4A00; border: 1px solid #F0D47A; }

/* ============================================================
   Inventory Row Grid
   ============================================================ */
.row-headers {
    display: grid;
    padding: 7px 22px;
    font-size:   11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color:    var(--gray-text);
    background: #F9F9F9;
    border-bottom: 1px solid var(--gray-mid);
    gap: 8px;
}

.row-headers.receive-col { grid-template-columns: 150px 160px 1fr 190px 60px; }
.row-headers.deploy-col  { grid-template-columns: 140px 150px 1fr 170px 170px 60px; }

.inv-row {
    display: grid;
    gap: 8px;
    align-items: center;
    padding: 8px 22px;
    border-bottom: 1px solid #F2F2F2;
}
.inv-row:last-child { border-bottom: none; }

.inv-row.receive-col { grid-template-columns: 150px 160px 1fr 190px 60px; }
.inv-row.deploy-col  { grid-template-columns: 140px 150px 1fr 170px 170px 60px; }

/* ============================================================
   Inputs & Selects
   ============================================================ */
.inv-row select,
.inv-row input[type="text"] {
    width:   100%;
    padding: 6px 9px;
    border:  1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-size:   13px;
    font-family: var(--font);
    background:  var(--white);
    color:       var(--text);
    transition:  border-color 0.15s;
}

.inv-row select:focus,
.inv-row input[type="text"]:focus {
    outline:      none;
    border-color: var(--red);
    box-shadow:   0 0 0 2px rgba(196,18,48,0.12);
}

/* Serial cell: input + status side by side */
.serial-cell {
    display:     flex;
    align-items: center;
    gap:         7px;
    min-width:   0;
}
.serial-cell input[type="text"] {
    flex:      1;
    min-width: 0;
    width:     auto;
}

.serial-status {
    font-size:   11px;
    font-weight: 700;
    white-space: nowrap;
    min-width:   70px;
    flex-shrink: 0;
}
.serial-status.found     { color: var(--green);  }
.serial-status.not-found { color: var(--red);    }
.serial-status.warning   { color: var(--orange); }
.serial-status.info      { color: var(--blue);   }
.serial-status.checking  { color: var(--gray-text); }

/* ============================================================
   Row Action Buttons
   ============================================================ */
.row-actions {
    display:        flex;
    gap:            5px;
    justify-content: flex-end;
    align-items:    center;
}

.btn-icon {
    width:  26px;
    height: 26px;
    border: none;
    border-radius: var(--radius);
    cursor:  pointer;
    font-size: 17px;
    line-height: 1;
    display:       flex;
    align-items:   center;
    justify-content: center;
    transition:    background 0.15s;
    flex-shrink:   0;
}
.btn-add-row    { background: var(--green); color: var(--white); }
.btn-add-row:hover { background: var(--green-dark); }
.btn-remove-row { background: #E4E4E4; color: #555; }
.btn-remove-row:hover { background: #CACACA; }

/* ============================================================
   Form Footer
   ============================================================ */
.form-footer {
    padding:      14px 22px;
    border-top:   1px solid var(--gray-mid);
    background:   #FAFAFA;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    padding:    8px 24px;
    border:     none;
    border-radius: var(--radius);
    font-size:  13px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor:     pointer;
    transition: background 0.15s, opacity 0.15s;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary       { background: var(--red);   color: var(--white); }
.btn-primary:hover:not(:disabled) { background: var(--red-dark); }

.btn-success       { background: var(--green); color: var(--white); }
.btn-success:hover:not(:disabled) { background: var(--green-dark); }

.btn-outline {
    background: var(--white);
    color:      var(--black);
    border:     1px solid var(--gray-mid);
}
.btn-outline:hover:not(:disabled) { background: var(--gray-bg); border-color: #ADADAD; }

.btn-full { width: 100%; padding: 10px; }

/* ============================================================
   Login Page
   ============================================================ */
.login-page {
    background:  var(--black);
    min-height:  100vh;
    display:     flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background:    var(--white);
    border-radius: 6px;
    padding:       40px 38px;
    width:         100%;
    max-width:     380px;
    box-shadow:    0 10px 40px rgba(0,0,0,0.45);
}

.login-logo {
    display:     flex;
    align-items: center;
    gap:         12px;
    font-size:   17px;
    font-weight: 800;
    color:       var(--black);
    margin-bottom: 4px;
}

.login-logo-mark {
    width:  30px;
    height: 30px;
    background: var(--red);
    clip-path: polygon(0 0, 100% 0, 100% 65%, 50% 100%, 0 65%);
    flex-shrink: 0;
}

.login-subtitle {
    font-size:   13px;
    color:       var(--gray-text);
    margin-bottom: 26px;
    padding-left: 42px;
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display:  block;
    font-size:   11px;
    font-weight: 700;
    color:       var(--gray-text);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-group input {
    width:   100%;
    padding: 9px 12px;
    border:  1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-size:   14px;
    font-family: var(--font);
    transition:  border-color 0.15s;
}
.form-group input:focus {
    outline:      none;
    border-color: var(--red);
    box-shadow:   0 0 0 2px rgba(196,18,48,0.12);
}

/* ============================================================
   Calendar Picker Popup
   ============================================================ */
.cal-popup {
    position:      absolute;
    z-index:       999;
    background:    var(--white);
    border:        1px solid var(--gray-mid);
    border-radius: var(--radius);
    box-shadow:    0 4px 20px rgba(0,0,0,0.18);
    width:         252px;
    user-select:   none;
}

.cal-header {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    background:      var(--black);
    color:           var(--white);
    padding:         8px 12px;
    border-radius:   var(--radius) var(--radius) 0 0;
}

.cal-title {
    font-size:   13px;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.cal-nav {
    background:  none;
    border:      none;
    color:       var(--white);
    cursor:      pointer;
    font-size:   22px;
    line-height: 1;
    padding:     0 4px;
    opacity:     0.75;
}
.cal-nav:hover { opacity: 1; }

.cal-grid { padding: 8px; }

.cal-dow {
    display:               grid;
    grid-template-columns: repeat(7, 1fr);
    text-align:     center;
    font-size:      10px;
    font-weight:    700;
    color:          var(--gray-text);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom:  4px;
}

.cal-days {
    display:               grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.cal-day {
    text-align:    center;
    padding:       6px 2px;
    font-size:     12px;
    font-family:   var(--font);
    color:         var(--text);
    border:        none;
    border-radius: var(--radius);
    background:    none;
    cursor:        pointer;
}

.cal-day:hover:not(.cal-day-other) { background: var(--gray-bg); }

.cal-day-other {
    color:          var(--gray-mid);
    cursor:         default;
    pointer-events: none;
}

.cal-day-today { color: var(--red); font-weight: 700; }

.cal-day-selected {
    background:  var(--red) !important;
    color:       var(--white) !important;
    font-weight: 700;
}

/* ============================================================
   Report Controls
   ============================================================ */
.report-controls {
    padding:       16px 22px;
    border-bottom: 1px solid var(--gray-mid);
    display:       flex;
    flex-direction: column;
    gap:           12px;
}

.quick-buttons {
    display:   flex;
    gap:       8px;
    flex-wrap: wrap;
}

.date-range {
    display:     flex;
    align-items: center;
    gap:         10px;
    flex-wrap:   wrap;
}

.date-range label {
    font-size:   11px;
    font-weight: 700;
    color:       var(--gray-text);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.date-range input[type="date"] {
    padding:  6px 10px;
    border:   1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-family: var(--font);
    font-size:   13px;
    color:       var(--text);
    width:        150px;
}
.date-range input[type="date"]:focus {
    outline:      none;
    border-color: var(--red);
    box-shadow:   0 0 0 2px rgba(196,18,48,0.12);
}
.date-range .date-error {
    font-size:   12px;
    color:       var(--red);
    font-weight: 600;
    width:       100%;
}

/* ============================================================
   Report Output
   ============================================================ */
.report-block {
    padding:       24px 22px 0;
}
.report-block:last-child { padding-bottom: 28px; }

.report-block-title {
    font-size:   12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color:       var(--black);
    padding-bottom: 8px;
    border-bottom:  2px solid var(--gray-mid);
    margin-bottom:  12px;
}
.deployed-title { border-bottom-color: var(--red);   }
.received-title { border-bottom-color: var(--green); }

.report-period {
    font-size:   13px;
    color:       var(--gray-text);
    margin-bottom: 12px;
}

.report-table {
    width:           100%;
    border-collapse: collapse;
    font-size:       13px;
    margin-bottom:   20px;
}

.report-table th {
    background:  var(--black);
    color:       var(--white);
    padding:     8px 12px;
    text-align:  left;
    font-size:   11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.report-table td {
    padding:       7px 12px;
    border-bottom: 1px solid #EBEBEB;
    color:         var(--text);
}

.report-table tbody tr:hover { background: #F9F9F9; }

.report-table tfoot td {
    padding:    8px 12px;
    border-top: 2px solid var(--gray-mid);
    background: var(--gray-bg);
}

.no-data {
    color:      var(--gray-text);
    font-size:  13px;
    padding:    18px 0;
    text-align: center;
}

.loading-msg {
    text-align: center;
    color:      var(--gray-text);
    padding:    28px;
    font-size:  13px;
}