:root {
    --bg-color: #0a0c0f;
    --card-bg: rgba(255, 255, 255, 0.02);
    --card-bg-hover: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #e8e8e8;
    --text-dim: #707070;
    --acc-gold: #ffc800;
    --gold-glow: rgba(255, 200, 0, 0.35);
    --acc-green: #00ff88;
    --acc-blue: #00c8ff;
    --acc-red: #ff4466;
    --font-main: 'Inter', system-ui, sans-serif;
    --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --radius: 14px;
}

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

body {
    background: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
}

/* Header */
header {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 12, 15, 0.9);
    backdrop-filter: blur(15px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-mobile-menu {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 5px;
}

/* Badges de Migración */
.migrado-badge {
    position: absolute;
    bottom: -6px;
    right: 40px;
    font-size: 0.55rem;
    background: var(--acc-gold);
    color: #000;
    padding: 1px 4px;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
    pointer-events: none;
    opacity: 0.8;
}

.btn-split-row {
    background: transparent;
    border: none;
    color: var(--acc-gold);
    cursor: pointer;
    padding: 5px;
    display: flex;
    align-items: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
}

.logo span {
    color: var(--acc-gold);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-pill {
    background: var(--card-bg);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    border: 1px solid var(--border-color);
}

.stat-pill strong {
    color: var(--acc-gold);
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    border: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-gold {
    background: var(--acc-gold);
    color: #000;
}

.btn-gold:hover {
    transform: scale(1.03);
    box-shadow: 0 0 20px var(--gold-glow);
}

.btn-emerald {
    background: #10b981;
    color: #fff;
    justify-content: center;
}

.btn-emerald:hover {
    background: #059669;
    transform: scale(1.03);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.btn-telegram {
    background: #0088cc;
    color: #fff;
    justify-content: center;
}

.btn-telegram:hover {
    background: #0077b3;
    transform: scale(1.03);
    box-shadow: 0 0 20px rgba(0, 136, 204, 0.4);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

/* Main Layout */
main {
    display: flex;
    height: calc(100vh - 70px);
}

/* Sidebar Navigation */
.nav-sidebar {
    width: 220px;
    background: rgba(0, 0, 0, 0.3);
    border-right: 1px solid var(--border-color);
    padding: 25px 15px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-dim);
    transition: var(--transition);
}

.nav-item:hover {
    background: var(--card-bg);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--card-bg-hover);
    color: var(--acc-gold);
    border: 1px solid var(--border-color);
}

.nav-item svg {
    width: 18px;
    height: 18px;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    gap: 15px;
}

.filters-container {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px;
    scrollbar-width: none;
    /* Firefox */
}

.filters-container::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 300;
}

.page-header h1 strong {
    font-weight: 700;
}

/* Grid de Tanques */
.tk-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.tk-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 22px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.tk-card:hover {
    transform: translateY(-4px);
    background: var(--card-bg-hover);
    box-shadow: 0 15px 40px -15px rgba(0, 0, 0, 0.5);
}

.tk-card.alert {
    border-color: var(--acc-gold);
    animation: pulse-gold 2.5s infinite;
}

@keyframes pulse-gold {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 200, 0, 0.15);
    }

    50% {
        box-shadow: 0 0 25px 0 rgba(255, 200, 0, 0.1);
    }
}

.tk-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.tk-id {
    font-size: 1.4rem;
    font-weight: 700;
}

.tk-badge {
    padding: 4px 10px;
    border-radius: 5px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-salmuera {
    background: rgba(0, 200, 255, 0.1);
    color: var(--acc-blue);
    border: 1px solid var(--acc-blue);
}

.badge-lavado {
    background: rgba(0, 255, 136, 0.1);
    color: var(--acc-green);
    border: 1px solid var(--acc-green);
}

.badge-quemado {
    background: rgba(255, 100, 50, 0.1);
    color: #ff8844;
    border: 1px solid #ff8844;
}

.badge-ingreso {
    background: rgba(150, 150, 150, 0.1);
    color: #aaaaaa;
    border: 1px solid #888888;
}

.tk-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 18px;
}

.label {
    font-size: 0.65rem;
    color: var(--text-dim);
    text-transform: uppercase;
    display: block;
}

.value {
    font-size: 0.9rem;
    font-weight: 500;
}

.tk-params-bar {
    display: flex;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.25);
    padding: 14px;
    border-radius: 10px;
}

.param {
    text-align: center;
}

.param-value {
    font-size: 1rem;
    font-weight: 700;
    display: block;
}

.param-value.alert-val {
    color: var(--acc-gold);
    text-shadow: 0 0 8px var(--gold-glow);
}

.param-label {
    font-size: 0.6rem;
    color: var(--text-dim);
    text-transform: uppercase;
}

.tk-alert-msg {
    margin-top: 12px;
    text-align: center;
    color: var(--acc-gold);
    font-size: 0.7rem;
    font-weight: 700;
}

/* Sidebar Panel (Derecho) */
.panel {
    position: fixed;
    top: 0;
    right: -550px;
    width: 520px;
    height: 100vh;
    background: rgba(10, 12, 15, 0.97);
    backdrop-filter: blur(30px);
    border-left: 1px solid var(--border-color);
    z-index: 500;
    padding: 30px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.panel.open {
    right: 0;
    box-shadow: -15px 0 50px rgba(0, 0, 0, 0.6);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-weight: 300;
    font-size: 1.3rem;
}

.panel-header h2 strong {
    font-weight: 700;
    color: var(--acc-gold);
}

.btn-close-panel {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.form-section {
    margin-bottom: 25px;
}

.form-section-title {
    font-size: 0.7rem;
    color: var(--acc-gold);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px dashed var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--acc-gold);
    background: rgba(255, 255, 255, 0.06);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.calibre-row,
.personal-row,
.maquina-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    align-items: flex-end;
    animation: fadeIn 0.3s ease;
}

.calibre-row .form-group,
.personal-row .form-group,
.maquina-row .form-group {
    margin-bottom: 0;
    flex: 1;
}

.btn-remove-row {
    background: rgba(255, 68, 102, 0.1);
    color: var(--acc-red);
    border: 1px solid rgba(255, 68, 102, 0.2);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-remove-row:hover {
    background: var(--acc-red);
    color: #fff;
}

.btn-icon-save {
    background: rgba(74, 222, 128, 0.1);
    color: #4ade80;
    border: 1px solid rgba(74, 222, 128, 0.2);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.btn-icon-save:hover {
    background: #4ade80;
    color: #fff;
}

.form-group select option {
    background: #1a1c20;
    color: #e8e8e8;
    padding: 12px;
}

.form-group select option:hover,
.form-group select option:focus {
    background: #2a2c30;
}

.form-group select option:disabled {
    color: #707070;
}

.panel-actions {
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-remove-row,
.btn-split-row {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.2);
    color: #ef4444;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-split-row {
    background: rgba(var(--acc-gold-rgb), 0.1);
    border: 1px solid rgba(var(--acc-gold-rgb), 0.2);
    color: var(--acc-gold);
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    padding: 4px 6px;
    height: 24px;
    display: flex;
    align-items: center;
    border-radius: 4px;
    opacity: 0.5;
}

.btn-split-row:hover {
    opacity: 1;
    background: var(--acc-gold);
    color: #000;
}

.btn-danger {
    background: rgba(255, 60, 60, 0.15);
    border: 1px solid var(--acc-red);
    color: var(--acc-red);
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger:hover {
    background: var(--acc-red);
    color: #fff;
}

/* Control History */
.history-list {
    max-height: 200px;
    overflow-y: auto;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 10px;
}

.history-item {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.history-item:last-child {
    border-bottom: none;
}

.history-date {
    color: var(--acc-gold);
    font-weight: 600;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 40px;
    color: var(--text-dim);
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    font-weight: 400;
    color: var(--text-main);
}

.empty-state p {
    font-size: 0.9rem;
    opacity: 0.7;
}

footer {
    padding: 20px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-dim);
    border-top: 1px solid var(--border-color);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

/* Tablets y Laptops Pequeñas */
@media (max-width: 1024px) {
    .nav-sidebar {
        width: 80px;
        padding: 25px 10px;
    }

    .nav-item span {
        display: none;
    }

    .nav-item {
        justify-content: center;
        padding: 15px;
    }

    .panel {
        width: 100%;
        right: -100%;
    }
}

/* Móviles */
@media (max-width: 768px) {
    header {
        padding: 0 15px;
    }

    .header-actions .stat-pill {
        display: none;
    }

    .btn-mobile-menu {
        display: block;
    }

    .nav-sidebar {
        position: fixed;
        left: -220px;
        top: 70px;
        height: calc(100vh - 70px);
        width: 220px;
        z-index: 200;
        background: #0a0c0f;
        transition: var(--transition);
        padding-top: 10px;
    }

    .nav-sidebar.open {
        left: 0;
    }

    .nav-item span {
        display: block;
    }

    .nav-item {
        justify-content: flex-start;
    }

    .sidebar-overlay {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 150;
        display: none;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .content-area {
        padding: 20px 15px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .page-header .btn {
        width: 100%;
        justify-content: center;
    }

    .tk-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .panel {
        padding: 20px;
    }
}