:root {
    --kds-bg: #0f172a;           /* Deep navy */
    --kds-surface: #1e293b;      /* Slate card */
    --kds-header: #020617;       /* Black header */
    --kds-text: #f8fafc;         /* White text */
    --kds-muted: #94a3b8;        /* Muted slate */
    --kds-primary: #10b981;      /* Emerald (ready/active) */
    --kds-warning: #f59e0b;      /* Amber (pantry/older) */
    --kds-danger: #ef4444;       /* Red (critical time) */
    --kds-border: rgba(255, 255, 255, 0.1);
}

.kds-body {
    background: var(--kds-bg);
    color: var(--kds-text);
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Manrope', sans-serif;
    overflow: hidden;
}

/* Header */
.kds-header {
    height: 72px;
    background: var(--kds-header);
    border-bottom: 2px solid var(--kds-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    flex-shrink: 0;
}

.kds-header-left { display: flex; align-items: center; gap: 16px; }
.kds-logo { 
    width: 46px; height: 46px; background: var(--kds-primary); border-radius: 12px; 
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}
.kds-logo .material-symbols-outlined { font-size: 26px; color: #fff; }

.kds-title { font-size: 19px; font-weight: 900; letter-spacing: -0.01em; margin: 0; color: #fff; }
.kds-info { font-size: 13px; font-weight: 700; color: var(--kds-muted); margin-top: 2px; }

/* Filter Bar */
.kds-filter-bar {
    height: 54px;
    background: rgba(0, 0, 0, 0.25);
    border-bottom: 1px solid var(--kds-border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}
.kds-filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--kds-muted);
}
.kds-filter-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--kds-border);
    border-radius: 8px;
    padding: 6px 10px;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    font-family: inherit;
    outline: none;
    transition: all 0.2s;
}
.kds-filter-input:focus { border-color: var(--kds-primary); background: rgba(255, 255, 255, 0.08); }
.kds-filter-input option { background: var(--kds-surface); color: #fff; }

.kds-header-right { display: flex; align-items: center; gap: 12px; }

.kds-status-pill {
    padding: 8px 16px; border-radius: 99px; font-size: 11px; font-weight: 900; letter-spacing: 0.08em;
    display: flex; align-items: center; gap: 8px; background: rgba(0, 0, 0, 0.4); border: 1px solid var(--kds-border);
}
.kds-status-pill.online { color: var(--kds-primary); }
.kds-status-pill.offline { color: var(--kds-danger); }

.kds-status-pill .kds-pulse { 
    width: 8px; height: 8px; border-radius: 50%; background: currentColor; 
    position: relative;
}
.online .kds-pulse::after {
    content: ''; position: absolute; inset: -4px; border-radius: 50%; 
    border: 2px solid currentColor; animation: kds-pulse 1.5s infinite;
}

@keyframes kds-pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(2.5); opacity: 0; }
}

.kds-header-btn {
    width: 44px; height: 44px; background: transparent; border: 1px solid var(--kds-border);
    border-radius: 12px; color: var(--kds-muted); cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center;
}
.kds-header-btn:hover { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.3); }

.spinning .material-symbols-outlined {
    animation: kds-spin 1s infinite linear;
}

@keyframes kds-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Main Grid */
.kds-main {
    flex: 1;
    padding: 24px;
    overflow-x: auto;
    overflow-y: hidden;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    scrollbar-width: thin;
    scrollbar-color: var(--kds-border) transparent;
}

.kds-main::-webkit-scrollbar { height: 8px; }
.kds-main::-webkit-scrollbar-thumb { background: var(--kds-border); border-radius: 10px; }

/* Order Card */
.kds-order-card {
    width: 340px;
    max-height: 100%;
    background: var(--kds-surface);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--kds-border);
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
    overflow: hidden;
}

.kds-order-header {
    padding: 18px 20px;
    border-bottom: 2px solid var(--kds-border);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kds-order-folio { font-size: 20px; font-weight: 900; color: #fff; letter-spacing: -0.02em; }
.kds-order-meta { font-size: 13px; font-weight: 700; color: var(--kds-muted); margin-top: 3px; }

.kds-order-timer {
    font-size: 22px; font-weight: 800; color: var(--kds-primary); font-variant-numeric: tabular-nums;
    background: rgba(16, 185, 129, 0.1); padding: 4px 10px; border-radius: 8px;
}

.kds-order-timer.warn { color: var(--kds-warning); background: rgba(245, 158, 11, 0.1); }
.kds-order-timer.danger { color: var(--kds-danger); background: rgba(239, 68, 68, 0.1); animation: heartbeat 1s infinite; }

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

.kds-order-body {
    flex: 1;
    padding: 0;
    overflow-y: auto;
    scrollbar-width: none;
}
.kds-order-body::-webkit-scrollbar { display: none; }

/* Course Grouping */
.course-group {
    border-bottom: 2px solid var(--kds-border);
    margin-bottom: 4px;
}
.course-header {
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 20px;
    font-size: 11px;
    font-weight: 900;
    color: var(--kds-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    justify-content: space-between;
}

/* Waiter Badge */
.waiter-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--kds-primary);
    margin-top: 4px;
}

.kds-order-item {
    padding: 14px 20px;
    border-bottom: 1px solid var(--kds-border);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: all 0.2s;
    cursor: pointer;
}

.item-check {
    width: 24px;
    height: 24px;
    border: 2px solid var(--kds-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
}
.item-check .material-symbols-outlined { font-size: 18px; opacity: 0; }

.kds-order-item.ready .item-check {
    background: var(--kds-primary);
    border-color: var(--kds-primary);
}
.kds-order-item.ready .item-check .material-symbols-outlined { opacity: 1; color: #fff; }


.kds-order-item:hover { background: rgba(255, 255, 255, 0.03); }
.kds-order-item.ready { opacity: 0.35; }
.kds-order-item.ready .item-qty-name { text-decoration: line-through; }

.item-main { display: flex; justify-content: space-between; align-items: flex-start; }
.item-qty-name { font-size: 16px; font-weight: 800; color: #fff; line-height: 1.3; }
.item-qty { color: var(--kds-primary); font-weight: 900; margin-right: 10px; font-size: 1.1em; }

.item-notes { 
    font-size: 11px; font-weight: 800; color: #fff; background: var(--kds-danger);
    display: inline-block; padding: 2px 6px; border-radius: 4px; margin-top: 6px;
    text-transform: uppercase;
}

.item-modifiers {
    margin-top: 6px; display: flex; flex-direction: column; gap: 3px;
}
.mod-item { 
    font-size: 13px; font-weight: 600; color: var(--kds-muted); 
    display: flex; align-items: center; gap: 8px;
}
.mod-item::before { content: '↳'; font-size: 16px; opacity: 0.5; color: var(--kds-primary); }

.kds-order-footer { padding: 16px; background: rgba(0, 0, 0, 0.2); }

.btn-finish-order {
    width: 100%; height: 64px; background: var(--kds-primary); color: #fff;
    border: none; border-radius: 16px; font-size: 17px; font-weight: 900;
    text-transform: uppercase; letter-spacing: 0.06em; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 10px;
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.25);
}
.btn-finish-order:active { transform: scale(0.96); filter: brightness(1.2); }
.btn-finish-order:disabled {
    background: #334155;
    color: #64748b;
    box-shadow: none;
    cursor: not-allowed;
    opacity: 0.8;
}
.btn-finish-order:disabled .material-symbols-outlined { color: #475569; }

/* Empty state */
.kds-empty-state {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--kds-muted); gap: 16px;
}
.kds-empty-state .material-symbols-outlined { font-size: 100px; opacity: 0.1; }
.kds-empty-state p { font-size: 28px; font-weight: 900; margin: 0; color: #fff; }
.kds-empty-state span { font-size: 15px; opacity: 0.6; }

/* Loader */
.kds-loader {
    position: fixed; inset: 0; background: var(--kds-bg); z-index: 5000;
    display: flex; align-items: center; justify-content: center; transition: opacity 0.5s;
}
.spinner {
    width: 60px; height: 60px; border: 6px solid var(--kds-border); border-top-color: var(--kds-primary);
    border-radius: 50%; animation: spin 1s infinite linear;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Modals */
.kds-modal-overlay {
    position: fixed; inset: 0; background: rgba(2, 6, 23, 0.9); backdrop-filter: blur(12px);
    z-index: 10000; display: flex; align-items: center; justify-content: center;
}
.kds-modal {
    width: 90%; max-width: 540px; background: var(--kds-surface); border-radius: 30px;
    padding: 40px; border: 1px solid var(--kds-border); box-shadow: 0 30px 100px rgba(0, 0, 0, 0.8);
}
.kds-modal-header h2 { font-size: 24px; font-weight: 900; margin-bottom: 8px; color: #fff; }
.kds-modal-header p { font-size: 15px; color: var(--kds-muted); margin-bottom: 32px; }

.kds-center-list { display: grid; gap: 14px; }
.kds-center-btn {
    padding: 22px 26px; background: rgba(255, 255, 255, 0.04); border: 1.5px solid var(--kds-border);
    border-radius: 20px; color: #fff; font-size: 18px; font-weight: 800; text-align: left;
    display: flex; justify-content: space-between; align-items: center; cursor: pointer;
    transition: all 0.2s;
}
.kds-center-btn:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--kds-primary); transform: translateY(-3px); }
.kds-center-btn span { font-size: 12px; font-weight: 800; background: rgba(0, 0, 0, 0.3); padding: 4px 10px; border-radius: 6px; color: var(--kds-muted); }
.kds-center-btn:hover span { color: var(--kds-primary); }

.kds-center-btn:hover span { color: var(--kds-primary); }

/* PIN Login & Numpad - POS Style */
.kds-login-card {
    background: var(--kds-surface);
    width: 100%;
    max-width: 420px;
    padding: 40px;
    border-radius: 32px;
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--kds-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.kds-login-header h2 { font-size: 26px; font-weight: 900; margin: 15px 0 8px; color: #fff; }
.kds-login-header p { font-size: 15px; color: var(--kds-muted); margin-bottom: 30px; line-height: 1.4; }

.kds-login-icon {
    width: 64px; height: 64px; background: rgba(16, 185, 129, 0.1); border-radius: 20px;
    display: flex; align-items: center; justify-content: center; color: var(--kds-primary);
}
.kds-login-icon .material-symbols-outlined { font-size: 32px; }

.kds-pin-display-wrapper { margin-bottom: 35px; width: 100%; }
.kds-pin-dots { display: flex; justify-content: center; gap: 15px; }
.kds-pin-dots span {
    width: 14px; height: 14px; border: 2.5px solid var(--kds-border); border-radius: 50%;
    transition: all 0.2s;
}
.kds-pin-dots span.filled {
    background: var(--kds-primary);
    border-color: var(--kds-primary);
    box-shadow: 0 0 15px var(--kds-primary);
}

.kds-numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
}
.num-btn {
    height: 72px; background: rgba(255, 255, 255, 0.03); border: 1px solid var(--kds-border);
    border-radius: 18px; color: #fff; font-size: 24px; font-weight: 800;
    transition: all 0.1s;
}
.num-btn:active { background: rgba(255, 255, 255, 0.08); transform: scale(0.96); }
.num-btn.clear-btn { color: var(--kds-danger); font-size: 18px; }
.num-btn.del-btn { color: var(--kds-warning); }

.kds-login-error {
    margin-top: 25px; min-height: 20px; color: var(--kds-danger);
    font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px;
}

/* Sidebar History */
.kds-sidebar {
    position: fixed;
    top: 0;
    right: -420px;
    width: 400px;
    height: 100%;
    background: #111;
    box-shadow: -10px 0 40px rgba(0,0,0,0.8);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--kds-border);
}

.kds-sidebar.open {
    right: 0;
}

.kds-sidebar-header {
    padding: 24px;
    background: #000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--kds-border);
}

.kds-sidebar-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.5px;
}

.kds-sidebar-close {
    background: none;
    border: none;
    color: var(--kds-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: background 0.2s;
}

.kds-sidebar-close:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
}

.kds-sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* History Cards */
.kds-history-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--kds-border);
    border-radius: 18px;
    padding: 20px;
    transition: transform 0.2s;
}

.kds-history-card:hover { transform: translateX(-5px); background: rgba(255,255,255,0.05); }

.kds-history-card header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.kds-history-card .folio {
    font-weight: 900;
    font-size: 15px;
    color: #fff;
}

.kds-history-card .time {
    font-size: 11px;
    font-weight: 700;
    color: var(--kds-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kds-history-card .items-list {
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 13.5px;
    color: rgba(255,255,255,0.7);
    line-height: 1.5;
}

.kds-history-card .table-info {
    font-size: 12px;
    font-weight: 800;
    color: var(--kds-success);
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}