/* ============================================================
   Font
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

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

:root {
    --red:        #C72226;
    --red-dark:   #A51B1E;
    --black:      #1E1E1E;
    --white:      #FFFFFF;
    --gray-bg:    #EBEBEB;
    --gray-mid:   #D8D8D8;
    --gray-text:  #6B6B6B;
    --text:       #1E1E1E;
    --green:      #278046;
    --green-dark: #1A5C33;
    --orange:     #C97A00;
    --blue:       #1A6FA8;
    --radius:     6px;
    --shadow:     0 1px 6px rgba(0,0,0,0.09), 0 2px 12px rgba(0,0,0,0.06);
    --font:       'Inter', '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(--white);
    padding:     0 28px;
    display:     flex;
    align-items: center;
    justify-content: space-between;
    height:      56px;
    box-shadow:  0 1px 0 var(--gray-mid), 0 2px 8px rgba(0,0,0,0.06);
    position:    sticky;
    top:         0;
    z-index:     100;
}

.navbar-brand {
    display:     flex;
    align-items: center;
    gap:         10px;
    text-decoration: none;
}

.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-brand span,
.navbar-brand-text {
    font-size:   15px;
    font-weight: 800;
    color:       var(--black);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.navbar-links { display: flex; align-items: center; gap: 2px; }

.navbar-links a {
    color:       var(--gray-text);
    text-decoration: none;
    padding:     8px 14px;
    border-radius: var(--radius);
    font-size:   13px;
    font-weight: 500;
    transition:  color 0.15s, background 0.15s;
}
.navbar-links a:hover  { color: var(--black); background: var(--gray-bg); }
.navbar-links a.active { color: var(--black); font-weight: 700; background: var(--gray-bg); }
.navbar-links a.nav-logout { color: var(--gray-text); }
.navbar-links a.nav-logout:hover { color: var(--red); background: #FDECEA; }

/* Hamburger button (hidden on desktop) */
.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--radius);
}
.nav-hamburger span {
    display: block;
    height: 2px;
    background: var(--black);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
    transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav-drawer {
    display: none;
    position: fixed;
    top: 56px;
    right: 0;
    bottom: 0;
    width: 220px;
    background: var(--white);
    box-shadow: -4px 0 20px rgba(0,0,0,0.12);
    z-index: 200;
    transform: translateX(100%);
    transition: transform 0.22s ease;
    overflow-y: auto;
}
.nav-drawer.open { transform: translateX(0); }
.nav-drawer-inner {
    display: flex;
    flex-direction: column;
    padding: 12px 0;
}
.nav-drawer-inner a {
    color: var(--gray-text);
    text-decoration: none;
    padding: 13px 24px;
    font-size: 15px;
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: background 0.12s, color 0.12s;
}
.nav-drawer-inner a:hover  { background: var(--gray-bg); color: var(--black); }
.nav-drawer-inner a.active { color: var(--black); font-weight: 700; border-left-color: var(--red); background: var(--gray-bg); }
.nav-drawer-logout { color: var(--gray-text) !important; margin-top: 8px; border-top: 1px solid var(--gray-mid); padding-top: 16px !important; }
.nav-drawer-logout:hover { color: var(--red) !important; background: #FDECEA !important; }

/* Overlay behind drawer */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 150;
    background: rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.22s;
}
.nav-overlay.open { opacity: 1; }

/* ============================================================
   Container & Card
   ============================================================ */
.container {
    max-width: 1200px;
    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:       12px 22px;
    background:    var(--white);
    border-bottom: 1px solid var(--gray-mid);
    display: flex; align-items: center; justify-content: space-between;
}

.section-header h2 {
    font-size:   13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color:       var(--black);
    padding-left: 12px;
}

.receive-header   h2 { border-left: 3px solid var(--green);  }
.deploy-header    h2 { border-left: 3px solid var(--red);    }
.report-header    h2 { border-left: 3px solid var(--blue);   }
.terminals-header h2 { border-left: 3px solid var(--orange); }
.billing-header   h2 { border-left: 3px solid var(--red);    }
.admin-header     h2 { border-left: 3px solid var(--blue);   }
.pricing-header   h2 { border-left: 3px solid var(--green);  }

/* ============================================================
   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 1fr 60px; }
.row-headers.deploy-col  { grid-template-columns: 140px 150px 210px 1fr 1fr 50px; }

.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 1fr 60px; }
.inv-row.deploy-col  { grid-template-columns: 140px 150px 210px 1fr 1fr 50px; }

/* ============================================================
   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 {
    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; }
.btn-remove-li       { background: #E4E4E4; color: #555; width: 24px; height: 24px; font-size: 15px; }
.btn-remove-li: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-danger       { background: #dc2626; color: var(--white); border: 1px solid transparent; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }

.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-sm { padding: 5px 12px; font-size: 12px; }

.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; }

.password-wrap { position: relative; }
.password-wrap input { padding-right: 40px; }
.btn-show-pw {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; padding: 0;
    color: var(--gray-text); line-height: 0;
}
.btn-show-pw:hover { color: var(--text); }

.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,
.form-group select {
    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,
.form-group select: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:       1200;
    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(--red);
    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-disabled { color: var(--gray-mid); cursor: not-allowed; opacity: 0.4; 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="text"] {
    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="text"]: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: #F2F2F2; color: var(--black);
    padding: 8px 12px; text-align: left;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.06em;
    border-bottom: 2px solid var(--gray-mid);
}
.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; }

.text-muted { color: var(--gray-text); font-style: italic; font-size: 12px; }

/* ============================================================
   Terminal Search Panel
   ============================================================ */
.terminal-search {
    padding: 16px 22px; border-bottom: 1px solid var(--gray-mid); background: #FAFAFA;
}

.search-row { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; }

.search-field { display: flex; flex-direction: column; gap: 4px; }

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

.search-field select,
.search-field input[type="text"] {
    padding: 7px 10px; border: 1px solid var(--gray-mid);
    border-radius: var(--radius); font-size: 13px;
    font-family: var(--font); color: var(--text); background: var(--white);
}
.search-field select:focus,
.search-field input[type="text"]:focus {
    outline: none; border-color: var(--red);
    box-shadow: 0 0 0 2px rgba(196,18,48,0.12);
}

#t-make, #t-model { width: 160px; }
#t-serial         { width: 220px; }
.search-field-grow { flex: 1; }
.search-field-grow input { width: 100%; }

.search-actions { display: flex; gap: 8px; align-items: flex-end; }

.t-result-count {
    padding: 10px 22px; font-size: 12px; color: var(--gray-text);
    border-bottom: 1px solid var(--gray-mid);
}

.t-table { min-width: 640px; }

.sortable-th { cursor: pointer; user-select: none; white-space: nowrap; }
.sortable-th:hover { color: var(--green); }
.sortable-th.sort-active { color: var(--green); }
.sort-icon { font-style: normal; }

/* ============================================================
   Status & Event Badges
   ============================================================ */
.status-badge,
.event-badge {
    display:        inline-block;
    padding:        2px 10px;
    border-radius:  12px;
    font-size:      11px;
    font-weight:    700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space:    nowrap;
}

.badge-in-stock  { background: #EBF7EF; color: #1D5F34; }
.badge-deployed  { background: #FDECEA; color: #8B0E22; }
.event-received  { background: #EBF7EF; color: #1D5F34; }
.event-deployed  { background: #FDECEA; color: #8B0E22; }

/* Billing status badges */
.badge-draft     { background: #F0F0F0; color: #555555; }
.badge-sent      { background: #E8F0FF; color: #1A5CB3; }
.badge-partial   { background: #FEF8E7; color: #7A4A00; }
.badge-paid-full { background: #EBF7EF; color: #1D5F34; }

.serial-link { color: var(--blue); text-decoration: none; font-weight: 600; }
.serial-link:hover { color: var(--red); text-decoration: underline; }

/* ============================================================
   History Modal (terminals.php + billing.php shared)
   ============================================================ */
.modal-overlay {
    position:   fixed;
    inset:      0;
    background: rgba(0,0,0,0.55);
    z-index:    1000;
    display:    flex;
    align-items: flex-start;
    justify-content: center;
    padding:    40px 16px;
    overflow-y: auto;
}

.modal-box {
    background:    var(--white);
    border-radius: 6px;
    width:         100%;
    max-width:     880px;
    box-shadow:    0 12px 48px rgba(0,0,0,0.3);
    flex-shrink:   0;
}

.modal-box-wide   { max-width: 720px; }
.modal-box-xl     { max-width: 980px; }
.modal-box-narrow { max-width: 480px; }

.modal-header {
    background:     var(--white);
    color:          var(--black);
    padding:        14px 20px;
    display:        flex;
    align-items:    flex-start;
    justify-content: space-between;
    border-radius:  6px 6px 0 0;
    border-bottom:  1px solid var(--gray-mid);
    gap:            12px;
}

.modal-title    { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; color: var(--black); }

.modal-subtitle {
    font-size: 12px; color: var(--gray-text);
    margin-top: 4px; display: flex; align-items: center;
    gap: 6px; flex-wrap: wrap;
}
.modal-subtitle .status-badge { font-size: 10px; }

.modal-close {
    background: none; border: none; color: var(--gray-text);
    font-size: 28px; line-height: 1; cursor: pointer;
    opacity: 0.7; padding: 0; flex-shrink: 0;
}
.modal-close:hover { opacity: 1; color: var(--black); }

.modal-body { padding: 20px; overflow-x: auto; }

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-mid);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    background: #FAFAFA;
    border-radius: 0 0 6px 6px;
}

.history-table    { margin-bottom: 0; min-width: 480px; }
.history-received td { background: #F7FDF8; }
.history-deployed td { background: #FDF7F7; }

/* ============================================================
   Return-frequency dots (Report page)
   ============================================================ */
.return-dot {
    display: inline-block; width: 9px; height: 9px;
    border-radius: 50%; margin-left: 6px;
    vertical-align: middle; flex-shrink: 0;
}
.yellow-dot { background: #E6A817; }
.red-dot    { background: var(--red); }

/* ============================================================
   Terminal Search Panel
   ============================================================ */

/* ============================================================
   Pricing Page
   ============================================================ */
.pricing-toolbar {
    padding: 14px 22px;
    border-bottom: 1px solid var(--gray-mid);
    background: #FAFAFA;
}

.pricing-updated { color: var(--gray-text); font-size: 12px; }

.archived-heading {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--gray-text);
    padding: 22px 22px 10px;
    border-top: 1px solid var(--gray-mid);
    margin: 16px 0 0;
}
.archived-row td { color: var(--gray-text); }

.price-input {
    width: 110px;
    padding: 5px 8px;
    border: 1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-size: 13px;
    font-family: var(--font);
    text-align: right;
}
.price-input:focus { outline: none; border-color: var(--red); box-shadow: 0 0 0 2px rgba(196,18,48,0.12); }

/* ============================================================
   Billing Page
   ============================================================ */
.billing-filters {
    padding:       14px 22px;
    border-bottom: 1px solid var(--gray-mid);
    display:       flex;
    align-items:   flex-end;
    gap:           16px;
    flex-wrap:     wrap;
    background:    #FAFAFA;
}

.filter-field {
    display:        flex;
    flex-direction: column;
    gap:            4px;
}

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

.filter-field select,
.filter-field input[type="text"] {
    padding: 7px 10px; border: 1px solid var(--gray-mid);
    border-radius: var(--radius); font-size: 13px;
    font-family: var(--font); color: var(--text); background: var(--white);
}
.filter-field select:focus,
.filter-field input[type="text"]:focus {
    outline: none; border-color: var(--red);
    box-shadow: 0 0 0 2px rgba(196,18,48,0.12);
}
.filter-grow { flex: 1; min-width: 200px; }
.filter-grow input { width: 100%; }

.perpage-toggle { display: flex; gap: 4px; }

.btn-perpage {
    padding: 6px 14px; border: 1px solid var(--gray-mid);
    border-radius: var(--radius); background: var(--white);
    font-size: 13px; font-weight: 600; cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn-perpage.active { background: var(--black); color: var(--white); border-color: var(--black); }
.btn-perpage:hover:not(.active) { background: var(--gray-bg); }

.billing-table { min-width: 900px; }

.billing-actions { white-space: nowrap; }
.billing-actions .btn { margin-right: 4px; }

.balance-zero { color: var(--green); font-weight: 700; }

.billing-pagination {
    padding: 14px 22px;
    border-top: 1px solid var(--gray-mid);
    display: flex;
    align-items: center;
    gap: 14px;
    justify-content: center;
}
.pg-info { font-size: 13px; color: var(--gray-text); }

/* ============================================================
   Edit Billing Record Form
   ============================================================ */
.billing-form-row {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.billing-form-group {
    margin-bottom: 16px;
}
.billing-form-group-grow { flex: 1; min-width: 200px; margin-bottom: 0; }

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

.billing-form-group input[type="text"],
.billing-form-group select,
.billing-form-group textarea {
    width: 100%;
    padding: 7px 10px;
    border: 1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-size: 13px; font-family: var(--font);
    color: var(--text); background: var(--white);
    transition: border-color 0.15s;
}
.billing-form-group input[type="text"]:focus,
.billing-form-group select:focus,
.billing-form-group textarea:focus {
    outline: none; border-color: var(--red);
    box-shadow: 0 0 0 2px rgba(196,18,48,0.12);
}
.billing-form-group textarea { resize: vertical; min-height: 56px; }

.method-options { display: flex; gap: 20px; flex-wrap: wrap; padding-top: 2px; }

.radio-label {
    display: flex; align-items: center; gap: 7px;
    font-size: 13px; cursor: pointer;
}
.radio-label input[type="radio"] { width: 16px; height: 16px; accent-color: var(--red); cursor: pointer; }

/* Line items */
.li-header-row {
    display: grid;
    grid-template-columns: 1fr 120px 90px 30px;
    gap: 8px;
    padding: 4px 0 6px;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--gray-text);
    border-bottom: 1px solid var(--gray-mid);
    margin-bottom: 6px;
}

.li-row {
    display: grid;
    grid-template-columns: 1fr 120px 90px 30px;
    gap: 8px;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid #F5F5F5;
}

.li-row input[type="text"] {
    padding: 5px 8px;
    border: 1px solid var(--gray-mid);
    border-radius: var(--radius);
    font-size: 13px; font-family: var(--font);
    width: 100%;
}
.li-row input[type="text"]:focus {
    outline: none; border-color: var(--red);
    box-shadow: 0 0 0 2px rgba(196,18,48,0.12);
}
.li-row .li-amount { text-align: right; }

.li-tax-label {
    display: flex; align-items: center; gap: 5px;
    font-size: 12px; cursor: pointer; white-space: nowrap;
}
.li-tax { width: 15px; height: 15px; accent-color: var(--red); cursor: pointer; }

#add-line-item-btn { margin-top: 10px; }

/* Billing totals */
.billing-totals {
    background: #FAFAFA;
    border: 1px solid var(--gray-mid);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
}

.totals-row {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
}

.totals-row span        { color: var(--gray-text); min-width: 100px; text-align: right; }
.totals-row .totals-value { min-width: 80px; text-align: right; font-size: 14px; color: var(--dark); }
.totals-row .balance-zero { color: var(--green); font-weight: 700; }

.totals-grand-total { border-top: 1px solid var(--gray-mid); padding-top: 8px; margin-top: 2px; }
.totals-grand-total span        { color: var(--dark); font-weight: 700; font-size: 15px; }
.totals-grand-total .totals-value { font-weight: 700; font-size: 15px; }

.totals-divider { border-top: 1px solid var(--gray-mid); padding-top: 8px; margin-top: 2px; }

.ph-balance-badge {
    display: inline-block;
    margin-top: 6px;
    font-size: 15px;
    font-weight: 700;
    color: var(--red);
}
.ph-balance-badge.ph-balance-paid { color: var(--green); }

/* ============================================================
   Autocomplete
   ============================================================ */
.autocomplete-wrap { position: relative; }

.autocomplete-dropdown {
    position:   absolute;
    top:        100%;
    left:       0;
    right:      0;
    background: var(--white);
    border:     1px solid var(--gray-mid);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    z-index:    1100;
    max-height: 200px;
    overflow-y: auto;
}

.autocomplete-item {
    padding:    8px 12px;
    cursor:     pointer;
    font-size:  13px;
    display:    flex;
    align-items: center;
    justify-content: space-between;
}
.autocomplete-item:hover { background: var(--gray-bg); }

.autocomplete-meta {
    font-size:  11px;
    color:      var(--gray-text);
    background: #EFEFEF;
    padding:    2px 7px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
}

/* ============================================================
   Contacts Page
   ============================================================ */
.contacts-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
}
.contact-search-input {
    flex: 1;
    max-width: 320px;
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    font-family: inherit;
    background: var(--bg);
    color: var(--text);
}
.contact-search-input:focus { outline: none; border-color: var(--accent); }
.contact-notes-preview {
    color: var(--text-muted);
    font-size: 12px;
    max-width: 280px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.contact-actions { display: flex; gap: 6px; }
.char-count { font-size: 11px; color: var(--text-muted); font-weight: 400; float: right; }
.text-center { text-align: center; }

/* ============================================================
   Barcode Scanner
   ============================================================ */
.btn-scan {
    width: 30px; height: 30px;
    border: none; border-radius: var(--radius);
    background: var(--blue); color: var(--white);
    cursor: pointer; display: flex; align-items: center;
    justify-content: center; flex-shrink: 0;
    transition: background 0.15s; padding: 0;
}
.btn-scan:hover { background: #155d8e; }
.btn-scan svg   { pointer-events: none; }

.scan-body { padding: 0; overflow: hidden; border-radius: 0 0 6px 6px; }

/* html5-qrcode container */
#scan-reader { width: 100%; background: #000; }
#scan-reader video { width: 100% !important; }
#scan-reader img[alt="Info icon"] { display: none !important; }

.scan-status-bar {
    padding: 10px 16px;
    font-size: 13px; color: var(--gray-text);
    text-align: center; background: var(--white);
    border-top: 1px solid var(--gray-mid);
    min-height: 40px; display: flex; align-items: center; justify-content: center;
}
.scan-status-bar.scan-found { color: var(--green); font-weight: 700; }
.scan-status-bar.scan-error { color: var(--red); }

/* ============================================================
   Bill To Modal Toolbar
   ============================================================ */
.bt-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0 12px;
    flex-wrap: wrap;
}
.bt-toggles { display: flex; gap: 6px; flex-wrap: wrap; }
.bt-status-toggle { padding: 4px 10px; font-size: 12px; }
.bt-toggle-active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

/* ============================================================
   Responsive — Tablet (< 1100px)
   ============================================================ */
@media (max-width: 1100px) {
    .row-headers.receive-col { grid-template-columns: 120px 130px 1fr 1fr 44px; }
    .row-headers.deploy-col  { grid-template-columns: 120px 130px 180px 1fr 1fr 44px; }
    .inv-row.receive-col     { grid-template-columns: 120px 130px 1fr 1fr 44px; }
    .inv-row.deploy-col      { grid-template-columns: 120px 130px 180px 1fr 1fr 44px; }
}

/* ============================================================
   Responsive — Mobile (< 768px)
   ============================================================ */
@media (max-width: 768px) {

    /* Navbar */
    .navbar              { padding: 0 16px; }
    .navbar-links        { display: none; }
    .nav-hamburger       { display: flex; }
    .nav-drawer          { display: block; }
    .nav-overlay         { display: block; }

    /* Container */
    .container { margin: 12px auto; padding: 0 10px; gap: 14px; }

    /* Hide column headers */
    .row-headers { display: none; }

    /* Inventory rows: single-column card */
    .inv-row.receive-col,
    .inv-row.deploy-col {
        grid-template-columns: 1fr;
        padding: 14px 16px; gap: 10px;
        border-bottom: 2px solid var(--gray-mid);
    }

    /* Field labels via ::before */
    .make-cell::before,
    .model-cell::before,
    .serial-cell::before,
    .notes-cell::before,
    .location-cell::before {
        display: block; font-size: 10px; font-weight: 700;
        text-transform: uppercase; letter-spacing: 0.06em;
        color: var(--gray-text); margin-bottom: 3px;
    }
    .make-cell::before     { content: 'Make'; }
    .model-cell::before    { content: 'Model'; }
    .serial-cell::before   { content: 'Serial Number'; }
    .notes-cell::before    { content: 'Notes'; }
    .location-cell::before { content: 'Location'; }

    .serial-cell               { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
    .serial-cell input[type="text"],
    .serial-cell select        { flex: 1; min-width: 0; }
    .serial-status             { width: 100%; margin-top: 2px; }

    .inv-row select,
    .inv-row input[type="text"] { width: 100%; font-size: 15px; padding: 8px 10px; }

    /* Actions */
    .row-actions { justify-content: flex-start; gap: 10px; }
    .btn-icon    { width: 38px; height: 38px; font-size: 20px; }

    /* Submit buttons */
    .form-footer      { padding: 12px 16px; }
    .form-footer .btn { width: 100%; padding: 13px; font-size: 15px; }

    /* Report controls */
    .report-controls    { padding: 14px 16px; gap: 14px; }
    .quick-buttons      { flex-direction: column; }
    .quick-buttons .btn { width: 100%; text-align: center; padding: 11px; }
    .date-range         { flex-direction: column; align-items: stretch; gap: 8px; }
    .date-range label   { font-size: 12px; }
    .date-range input[type="text"] { width: 100%; font-size: 15px; padding: 8px 10px; }
    .date-error         { font-size: 13px; }
    #btn-generate       { width: 100%; padding: 12px; }

    /* Report output */
    .report-block { overflow-x: auto; padding: 16px 16px 0; -webkit-overflow-scrolling: touch; }
    .report-table { font-size: 11px; min-width: 480px; }
    .report-table th,
    .report-table td { padding: 6px 8px; }

    /* Calendar popup */
    .cal-popup { width: calc(100vw - 24px); max-width: 320px; }

    /* Section header */
    .section-header    { padding: 11px 16px; }
    .section-header h2 { font-size: 12px; }

    /* Login */
    .login-container { margin: 20px 16px; padding: 28px 20px; }
    .login-logo      { font-size: 15px; }

    /* Billing filters */
    .billing-filters { flex-direction: column; align-items: stretch; }
    .filter-grow     { min-width: unset; }

    /* Billing table */
    .billing-table { min-width: 700px; }

    /* Modal */
    .modal-overlay { padding: 16px 8px; }
    .modal-body    { padding: 14px; }
    .modal-footer  { padding: 12px 14px; flex-direction: column-reverse; }
    .modal-footer .btn { width: 100%; justify-content: center; }

    /* Line items on mobile */
    .li-header-row,
    .li-row { grid-template-columns: 1fr 90px 80px 28px; gap: 6px; }

    /* Billing form */
    .billing-form-row { flex-direction: column; gap: 0; }
    .billing-form-group-grow { min-width: unset; }
    .billing-totals { align-items: stretch; }
    .totals-row span   { min-width: 80px; }
    .totals-row strong { min-width: 60px; }

    /* Contacts */
    .contacts-toolbar { flex-direction: column; align-items: stretch; }
    .contact-search-input { max-width: unset; }
    .contact-notes-preview { max-width: 140px; }
}