@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

/* ============================================================
   SPLASH SCREEN (Critical Path)
   ============================================================ */
.splash-screen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: #1A1A1A; /* matches --enba-dark */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s;
}

.splash-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
    width: 280px;
}

.splash-logo {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 5px;
    margin-bottom: 30px;
    animation: splashPulse 2s infinite ease-in-out;
}

.splash-logo .enba {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    color: #E35205; /* matches --enba-orange */
    font-size: 32px;
    letter-spacing: -1px;
}

.splash-logo .recycling {
    font-family: 'Manrope', sans-serif;
    font-weight: 400;
    color: #ffffff;
    font-size: 24px;
}

.loader-wrapper {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 15px;
}

.loader-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, #E35205, transparent);
    background-size: 200% 100%;
    animation: loaderMove 1.5s infinite linear;
}

.splash-status {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

@keyframes splashPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.02); opacity: 0.9; }
}

@keyframes loaderMove {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

:root {
    /* === Design Token Palette (Enba Official: Orange & Industrial Dark) === */
    --primary:              #1A1A1A;
    --primary-container:    #262626;
    --secondary:            #E35205; /* Official Enba Orange */
    --secondary-container:  #FFF2EB;
    --on-secondary:         #ffffff;
    --on-secondary-container: #4D1B00;

    --surface:              #F7F7F7; /* Minimalist Background */
    --surface-dim:          #EAEAEA;
    --surface-container-lowest: #ffffff;
    --surface-container-low:    #F2F2F2;
    --surface-container:        #EBEBEB;
    --surface-container-high:   #E0E0E0;
    --surface-variant:      rgba(26, 26, 26, 0.70);
    --on-surface:           #1A1A1A;
    --on-surface-variant:   #4A4A4A;
    --outline-variant:      rgba(26, 26, 26, 0.10);

    /* Enba Official Variables */
    --enba-orange:      #E35205;
    --enba-orange-dark: #C24604;
    --enba-dark:        #1A1A1A;
    --enba-dark-light:  #333333;

    /* Aliases for backward compatibility during brand refresh */
    --color-primary:    var(--enba-dark);
    --color-accent:     var(--enba-orange);

    /* Semantic */
    --error:            #C0392B;
    --error-container:  #FDECEA;
    --warning:          #FFB800;
    --info:             #2980B9;
    --capex-purple:     #6C5CE7;

    /* elevation */
    --shadow-ambient:   0px 24px 48px -12px rgba(0, 0, 0, 0.05);
    --shadow-card:      0 8px 24px rgba(0, 0, 0, 0.04);
    --shadow-elevated:  0 12px 40px rgba(0, 0, 0, 0.08);
}

/* ============================================================
   BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--surface);
    color: var(--on-surface);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ============================================================
   SIDEBAR — Glassmorphism
   ============================================================ */
.sidebar {
    width: 340px;
    background: linear-gradient(160deg, rgba(46, 21, 5, 0.96) 0%, rgba(22, 10, 0, 0.98) 100%);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    color: #fff;
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
    z-index: 10;
    box-shadow: var(--shadow-elevated);
}

.sidebar {
    position: relative;
    transition: width 0.3s ease;
}

.sidebar-hidden {
    width: 48px !important;
    padding: 28px 0;
    overflow: hidden;
}

.sidebar-content {
    min-width: 300px;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sidebar-hidden .sidebar-content {
    opacity: 0;
    pointer-events: none;
}

.sidebar-toggle {
    position: absolute;
    top: 16px;
    right: 12px;
    width: 28px;
    height: 28px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    color: rgba(255,255,255,0.6);
    font-size: 11px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    transition: all 0.2s;
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: rgba(227, 82, 5, 0.2);
    color: var(--enba-orange);
    border-color: var(--enba-orange);
}

.sidebar-hidden .sidebar-toggle {
    right: 50%;
    transform: translateX(50%);
}

.sidebar h2 {
    font-family: 'Manrope', sans-serif;
    color: rgba(255,255,255,0.55);
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    padding-bottom: 10px;
    margin-top: 28px;
    border-bottom: none;
    /* Tonal boundary — no stroke */
}

/* IPK Kartları */
.card {
    padding: 18px;
    margin: 10px 0;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(227, 82, 5, 0.12);
    border-radius: 1.25rem;
    cursor: grab;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    left: 0; top: 16px; bottom: 16px;
    width: 3px;
    background: var(--enba-orange);
    border-radius: 0 3px 3px 0;
    opacity: 0;
    transition: opacity 0.25s;
}

.card:hover::before { opacity: 1; }
.card:active { cursor: grabbing; transform: scale(0.98); }
.card:hover {
    transform: translateY(-3px);
    background: rgba(255,255,255,0.08);
    border-color: rgba(227, 82, 5, 0.4);
    box-shadow: var(--shadow-elevated);
}

.card-title {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    font-size: 13px;
    color: var(--enba-orange);
    margin-bottom: 8px;
    padding-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-info {
    font-size: 11px;
    color: rgba(255,255,255,0.45);
    margin-bottom: 8px;
}

/* ============================================================
   ANA İÇERİK ALANI
   ============================================================ */
.factory {
    flex: 1;
    padding: 40px 48px;
    background-color: var(--surface);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Logo */
.factory-header {
    text-align: center;
    margin: 0 0 20px 0;
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 10px;
}

.factory-header .enba {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    color: var(--enba-orange); /* Vibrant Orange */
    font-size: 44px;
    letter-spacing: -1.5px;
    line-height: 1;
    text-shadow: 0 2px 10px rgba(227,82,5,0.2);
}

.factory-header .recycling {
    font-family: 'Manrope', sans-serif;
    font-weight: 600; /* Increased from 300 for legibility */
    color: var(--enba-dark); /* Industrial Dark */
    font-size: 34px;
    letter-spacing: 0.5px;
    line-height: 1;
}

.factory-subheader {
    text-align: center;
    color: var(--on-surface-variant);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 32px;
    font-weight: 600;
}

/* ============================================================
   DASHBOARD (TKKÖ Matris)
   ============================================================ */
.dashboard {
    background: linear-gradient(135deg, var(--enba-orange) 0%, var(--enba-orange-dark) 100%);
    color: white;
    padding: 28px;
    border-radius: 1.5rem;
    margin-bottom: 32px;
    box-shadow: var(--shadow-elevated);
}

.dashboard h3 {
    font-family: 'Manrope', sans-serif;
    margin-top: 0;
    color: #fff;
    text-transform: uppercase;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 1.5px;
}

.line-item {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 6px;
    padding-bottom: 6px;
    /* Ghost border — no solid lines */
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* Matris Tablo */
.matrix-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    color: #E2E8F0;
    min-width: 600px;
}

.matrix-table th,
.matrix-table td {
    padding: 11px 14px;
    text-align: right;
    /* Ghost border only */
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.matrix-table th:first-child,
.matrix-table td:first-child { text-align: left; }

.matrix-table th {
    border-bottom: 2px solid rgba(255,255,255,0.4);
    padding-bottom: 14px;
    color: rgba(255,255,255,0.6);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 1px;
}

.matrix-table .row-header {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    background: rgba(255,255,255,0.03);
    text-align: left;
    padding: 13px 10px;
    font-size: 12px;
    border-bottom: none;
    letter-spacing: 0.5px;
}

.matrix-table .group-row:hover {
    background-color: rgba(255, 255, 255, 0.15) !important;
}

.matrix-table .total-col {
    font-weight: 700;
    background: rgba(255, 255, 255, 0.1);
}

.matrix-table .grand-total {
    border-top: 1px solid rgba(255,255,255,0.12);
    font-weight: 700;
    font-size: 14px;
}

/* ============================================================
   PAGE CONTAINER (İPK Düzenleme Sayfası)
   ============================================================ */
.page-container {
    padding: 48px;
    background-color: var(--surface);
    height: 100vh;
    overflow-y: auto;
}

/* Sekmeler */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 32px;
    background: var(--surface-container-low);
    padding: 4px;
    border-radius: 0.75rem;
    width: fit-content;
}

.tab-btn {
    padding: 10px 24px;
    background: transparent;
    border: none;
    border-radius: 0.5rem;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: var(--on-surface-variant);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

.tab-btn:hover { color: var(--on-surface); }

.tab-btn.active {
    background: var(--surface-container-lowest);
    color: var(--enba-orange);
    box-shadow: var(--shadow-card);
}

/* ============================================================
   FORM SECTIONS
   ============================================================ */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 20px;
}

.form-section {
    background: var(--surface-container-lowest);
    padding: 24px;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-card);
}

.params-zone {
    background: var(--surface-container-lowest);
    padding: 28px;
    border-radius: 1.5rem;
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
}

.params-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.param-box {
    background: var(--surface-container-low);
    padding: 12px 15px;
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease;
}

.param-box:focus-within {
    box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.25);
}

.param-box label {
    font-size: 10px;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.param-box input {
    padding: 8px;
    border: none;
    border-radius: 0.5rem;
    background: var(--surface-container-lowest);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 14px;
    color: var(--on-surface);
    outline: none;
    box-shadow: 0 1px 3px rgba(21,34,46,0.06);
}

.param-box input:focus {
    box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.3);
}

/* Kütle Dengesi */
.mass-balance-zone {
    background: var(--surface-container-lowest);
    padding: 28px;
    border-radius: 1.5rem;
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
}

.mass-balance-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 20px;
}

.mass-box {
    background: var(--surface-container-low);
    padding: 20px;
    border-radius: 0.75rem;
}

.mass-box h4 {
    margin: 0 0 15px 0;
    font-family: 'Manrope', sans-serif;
    color: var(--on-surface);
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--outline-variant);
}

.sub-product-row {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
    font-size: 13px;
}

.sub-product-row input {
    padding: 8px;
    border: none;
    border-radius: 0.5rem;
    background: var(--surface-container-lowest);
    outline: none;
    box-shadow: 0 1px 3px rgba(21,34,46,0.06);
}

.summary-box {
    background: linear-gradient(135deg, var(--enba-orange) 0%, var(--enba-orange-dark) 100%);
    color: white;
    padding: 20px;
    border-radius: 0.75rem;
    font-size: 13px;
    box-shadow: var(--shadow-card);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    /* Ghost border */
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

/* Giderler */
.giderler-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.input-row {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
}

.input-row label {
    font-size: 10px;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.input-row input {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 0.5rem;
    text-align: right;
    background: var(--surface-container-low);
    font-family: 'Inter', sans-serif;
    color: var(--on-surface);
    outline: none;
    transition: box-shadow 0.2s;
    box-shadow: 0 1px 3px rgba(21,34,46,0.04);
}

.input-row input:focus {
    box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.3);
}

.input-row input:disabled {
    background: var(--surface-container);
    color: var(--on-surface-variant);
    cursor: not-allowed;
    font-weight: 600;
}

/* Personel */
.personnel-zone {
    background: var(--surface-container-lowest);
    padding: 28px;
    border-radius: 1.5rem;
    margin-top: 24px;
    box-shadow: var(--shadow-card);
}

.personnel-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    font-size: 13px;
    background: var(--surface-container-lowest);
    border-radius: 0.75rem;
    overflow: hidden;
}

.personnel-table th,
.personnel-table td {
    padding: 12px 16px;
    text-align: left;
    /* Alternating rows, no dividers */
}

.personnel-table th {
    background: var(--primary-container);
    color: rgba(255,255,255,0.7);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-size: 11px;
    font-weight: 500;
}

.personnel-table tr:nth-child(odd) td  { background: var(--surface-container-lowest); }
.personnel-table tr:nth-child(even) td { background: var(--surface-container-low); }

.personnel-form {
    display: flex;
    gap: 14px;
    margin-top: 20px;
    align-items: flex-end;
    flex-wrap: wrap;
    background: var(--surface-container-low);
    padding: 16px;
    border-radius: 0.75rem;
}

.personnel-form .form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 90px;
}

.personnel-form label {
    font-size: 10px;
    margin-bottom: 5px;
    color: var(--on-surface-variant);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.personnel-form input {
    padding: 10px;
    border: none;
    border-radius: 0.5rem;
    background: var(--surface-container-lowest);
    font-family: 'Inter', sans-serif;
    outline: none;
    box-shadow: 0 1px 3px rgba(21,34,46,0.06);
}

/* CAPEX */
.capex-zone {
    background: var(--surface-container-lowest);
    padding: 28px;
    border-radius: 1.5rem;
    margin-top: 24px;
    box-shadow: var(--shadow-card);
}

.capex-box {
    background: var(--surface-container-low);
    padding: 20px;
    border-radius: 0.75rem;
    margin-bottom: 16px;
}

.capex-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-bottom: 15px;
}

.capex-table th,
.capex-table td {
    padding: 12px 16px;
    text-align: left;
}

.capex-table th {
    background: var(--capex-purple);
    color: white;
    text-transform: uppercase;
    font-weight: 500;
    font-size: 11px;
    letter-spacing: 0.8px;
}

.capex-table tr:nth-child(odd) td  { background: var(--surface-container-lowest); }
.capex-table tr:nth-child(even) td { background: var(--surface-container-low); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 1.5rem;   /* xl — oversized, modern */
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 13px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--secondary);
    color: var(--on-secondary);
    width: 100%;
    padding: 12px 24px;
    font-size: 14px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 16px rgba(211,84,0,0.25);
}

.btn-primary:hover {
    background: var(--enba-orange-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(211,84,0,0.35);
}

.btn-success {
    background: var(--secondary);
    color: var(--on-secondary);
    text-transform: uppercase;
}

.btn-success:hover { background: var(--enba-orange-dark); }

.btn-danger {
    background: var(--error);
    color: white;
    text-transform: uppercase;
}

.btn-warning {
    background: var(--warning);
    color: white;
    text-transform: uppercase;
}

.btn-info {
    background: var(--info);
    color: white;
    text-transform: uppercase;
}

.btn-purple {
    background: var(--capex-purple);
    color: white;
    text-transform: uppercase;
}

.btn-secondary {
    background: var(--surface-container-high);
    color: var(--on-surface);
    text-transform: uppercase;
    border: none;
}

.btn-secondary:hover {
    background: var(--surface-dim);
}

/* ============================================================
   AKTİF KARTLAR (Fabrika Alanı)
   ============================================================ */
.active-cards {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.active-card {
    padding: 22px;
    background: var(--surface-container-lowest);
    border-top: 3px solid var(--enba-orange);
    border-radius: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 240px;
    box-shadow: var(--shadow-card);
    transition: transform 0.2s, box-shadow 0.2s;
}

.active-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-elevated);
}

.remove-btn {
    background: var(--surface-container-low);
    color: var(--on-surface-variant);
    border: none;
    border-radius: 0.75rem;
    padding: 10px 18px;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    margin-top: 10px;
    width: 100%;
    transition: all 0.2s;
}

.remove-btn:hover {
    background: var(--error-container);
    color: var(--error);
}

/* ============================================================
   RESET BUTTON
   ============================================================ */
.reset-btn-container {
    margin-top: auto;
    padding-top: 20px;
}

.btn-reset {
    background: transparent;
    color: rgba(255,255,255,0.3);
    border: 1px solid rgba(255,255,255,0.15);
    width: 100%;
    padding: 12px;
    text-transform: uppercase;
    font-size: 11px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-reset:hover {
    background: rgba(192, 57, 43, 0.12);
    color: #ff6b6b;
    border-color: rgba(192, 57, 43, 0.4);
}

/* ============================================================
   KAPASİTE ALERTS
   ============================================================ */
.capacity-alert {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: 0.75rem;
    font-size: 14px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.capacity-success {
    background: #f0fce6;
    color: var(--secondary);
}

.capacity-error {
    background: var(--error-container);
    color: var(--error);
}

/* ============================================================
   MOBİL OVERLAY
   ============================================================ */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 40;
    backdrop-filter: blur(2px);
}

/* ============================================================
   MOBİL — ≤768px
   ============================================================ */
@media (max-width: 768px) {

    /* Layout */
    .container {
        flex-direction: column;
        height: auto;
        min-height: 100dvh;
        overflow: visible;
    }

    /* Sidebar — full-screen drawer from bottom */
    .sidebar {
        position: fixed;
        bottom: 0; left: 0; right: 0;
        width: 100% !important;
        height: 85dvh;
        max-height: 85dvh;
        border-radius: 1.5rem 1.5rem 0 0;
        padding: 16px 20px 100px;
        z-index: 50;
        transform: translateY(100%);
        transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
        overflow-y: auto;
        box-shadow: 0 -8px 40px rgba(0,0,0,0.35);
    }

    .sidebar.sidebar-open-mobile {
        transform: translateY(0);
    }

    /* Drawer handle */
    .sidebar::before {
        content: '';
        display: block;
        width: 40px;
        height: 4px;
        background: rgba(255,255,255,0.25);
        border-radius: 2px;
        margin: 0 auto 20px;
    }

    .sidebar-hidden {
        width: 100% !important;
        padding: 16px 20px 100px;
        overflow-y: auto;
    }

    .sidebar-toggle {
        display: none;
    }

    .sidebar-content {
        min-width: unset;
        opacity: 1 !important;
        pointer-events: auto !important;
    }

    /* Overlay */
    .sidebar-overlay {
        display: block;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s;
    }

    .sidebar-overlay.visible {
        opacity: 1;
        pointer-events: auto;
    }

    /* Sabit alt nav çubuğu */
    .mobile-bottom-nav {
        position: fixed;
        bottom: 0; left: 0; right: 0;
        height: 64px;
        background: linear-gradient(160deg, rgba(21,34,46,0.98) 0%, rgba(0,11,22,1) 100%);
        display: flex;
        align-items: center;
        justify-content: space-around;
        z-index: 60;
        box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
        padding: 0 16px;
    }

    .mobile-nav-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;
        background: none;
        border: none;
        color: rgba(255,255,255,0.55);
        font-family: 'Inter', sans-serif;
        font-size: 10px;
        font-weight: 600;
        letter-spacing: 0.5px;
        cursor: pointer;
        padding: 8px 16px;
        border-radius: 0.75rem;
        transition: all 0.2s;
        min-width: 64px;
    }

    .mobile-nav-btn .nav-icon { font-size: 20px; line-height: 1; }
    .mobile-nav-btn.active,
    .mobile-nav-btn:active { color: var(--enba-orange); }

    /* İPK sayacı rozeti */
    .mobile-nav-badge {
        position: absolute;
        top: -4px; right: -4px;
        background: var(--enba-orange);
        color: #fff;
        font-size: 10px;
        font-weight: 700;
        min-width: 18px;
        height: 18px;
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0 4px;
    }

    /* Factory */
    .factory {
        padding: 20px 16px 80px;
        overflow-y: auto;
        min-height: 100dvh;
    }

    .factory-header .enba   { font-size: 32px; }
    .factory-header .recycling { font-size: 26px; }
    .factory-subheader { font-size: 9px; letter-spacing: 1.5px; margin-bottom: 20px; }

    /* Dashboard */
    .dashboard { padding: 18px; border-radius: 1rem; margin-bottom: 20px; }
    .dashboard h3 { font-size: 12px; }

    /* Tablolar — yatay kaydırma */
    .matrix-table { font-size: 11px; min-width: 480px; }
    .matrix-table th, .matrix-table td { padding: 8px 10px; }

    /* Page container (İPK formu) */
    .page-container { padding: 20px 16px 80px; height: auto; min-height: 100dvh; }

    /* Sekmeler — tam genişlik */
    .tabs { width: 100%; overflow-x: auto; }
    .tab-btn { padding: 10px 16px; font-size: 11px; white-space: nowrap; }

    /* Form grid'leri — tek kolon */
    .form-grid          { grid-template-columns: 1fr; gap: 16px; }
    .mass-balance-grid  { grid-template-columns: 1fr; gap: 16px; }
    .params-grid        { grid-template-columns: 1fr 1fr; gap: 10px; }
    .giderler-grid      { grid-template-columns: 1fr; }

    /* Zone padding */
    .params-zone, .mass-balance-zone, .personnel-zone, .capex-zone {
        padding: 18px 16px;
        border-radius: 1rem;
        margin-bottom: 16px;
    }

    /* Aktif kartlar — tam genişlik */
    .active-cards { flex-direction: column; gap: 12px; }
    .active-card  { min-width: unset; width: 100%; }

    /* Personel tablosu — kaydırmalı */
    .personnel-table { font-size: 11px; min-width: 500px; }
    .personnel-table th, .personnel-table td { padding: 8px 10px; }

    /* Personel formu — 2li ızgara */
    .personnel-form { gap: 10px; }
    .personnel-form .form-group { min-width: calc(50% - 5px); }

    /* CAPEX kutusu */
    .capex-box { padding: 14px; }
    .capex-table { font-size: 11px; min-width: 400px; }

    /* Butonlar — daha büyük dokunma alanı */
    .btn { min-height: 44px; }
    .btn-primary { padding: 14px; }

    /* Sub-product row */
    .sub-product-row { flex-wrap: wrap; }

    /* Reset butonu */
    .reset-btn-container { padding-bottom: 16px; }
}

/* Çok küçük ekranlar ≤380px */
@media (max-width: 380px) {
    .params-grid { grid-template-columns: 1fr; }
    .factory { padding: 16px 12px 80px; }
    .page-container { padding: 16px 12px 80px; }
    .factory-header .enba    { font-size: 28px; }
    .factory-header .recycling { font-size: 22px; }
}

/* ============================================================
   LANDING PAGE & TOPNAV REFINEMENTS
   ============================================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.main-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 20px;
}

.chart-wrap {
    display: flex;
    align-items: center;
    gap: 30px;
}

.landing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

@media (max-width: 768px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .main-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .chart-wrap {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

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

    .landing-header .btn-group {
        width: 100%;
        display: flex;
        gap: 10px;
    }

    /* Nav bar refinements */
    .topnav-recycling {
        display: none !important; /* Hide 'recycling' word to save space */
    }

    .nav-user-info-text {
        display: none !important; /* Hide name/role text in top bar */
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   NEW RESPONSIVE NAVIGATION CLASSES
   ============================================================ */
.nav-desktop-links {
    display: flex !important;
}

.nav-mobile-toggle {
    display: none !important;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    padding: 20px 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--outline-variant);
}

.step-indicators {
    display: flex;
    justify-content: space-between;
    padding: 24px;
    background: var(--surface-container-lowest);
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
    margin-bottom: 24px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 768px) {
    .nav-desktop-links {
        display: none !important;
    }

    .nav-mobile-toggle {
        display: flex !important;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 0;
    }

    .page-header h2, .page-header h1 {
        font-size: 20px !important;
    }

    .page-header .btn-group {
        width: 100%;
        display: flex;
        gap: 10px;
    }

    .page-header .btn-group .btn {
        flex: 1;
    }

    .step-indicators {
        padding: 12px;
        gap: 8px;
    }

    .step-indicators .step-label {
        display: none;
    }
}

/* Masaüstü — mobil nav gizle */
@media (min-width: 769px) {
    .mobile-bottom-nav { display: none; }
    .sidebar-overlay   { display: none !important; }
}

/* ============================================================
   AUTH & LOGIN PAGE
   ============================================================ */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #000b16 0%, #15222E 100%);
    position: relative;
    overflow: hidden;
    padding: 20px;
}

.login-screen::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(243,156,18,0.08) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
}

.login-card {
    width: 100%;
    max-width: 440px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 2.5rem;
    padding: 50px 40px;
    box-shadow: 0 40px 100px rgba(0,0,0,0.6);
    position: relative;
    z-index: 10;
    animation: authFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes authFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-logo {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 40px;
}

.login-logo .enba {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    color: #fff;
    font-size: 38px;
    letter-spacing: -1px;
    text-shadow: 0 4px 15px rgba(255,255,255,0.3);
}

.login-logo .recycling {
    font-family: 'Manrope', sans-serif;
    font-weight: 600; /* Increased for legibility */
    color: #FFB380; /* Contrast Fix */
    font-size: 30px;
    letter-spacing: 0px;
    text-shadow: 0 4px 15px rgba(227,82,5,0.4);
}

.login-welcome {
    text-align: center;
    margin-bottom: 40px;
}

.login-welcome h1 {
    font-family: 'Manrope', sans-serif;
    font-weight: 800;
    font-size: 24px;
    color: #fff;
    margin: 0 0 10px;
}

.login-welcome p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin: 0;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.auth-input-group {
    position: relative;
}

.auth-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
    margin-left: 4px;
}

.auth-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 16px 20px;
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    outline: none;
    transition: all 0.25s;
}

.auth-input:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--enba-orange);
    box-shadow: 0 0 0 4px rgba(243, 156, 18, 0.15);
}

.auth-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.remember-me input {
    accent-color: var(--enba-orange);
    width: 16px;
    height: 16px;
}

.login-btn {
    background: var(--enba-orange);
    color: #fff;
    border: none;
    border-radius: 1rem;
    padding: 18px;
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: 15px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 20px;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(243, 156, 18, 0.2);
}

.login-btn:hover {
    background: var(--enba-orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(227, 82, 5, 0.35);
}

.login-btn:active {
    transform: translateY(0);
}

/* Auth Error */
.auth-error {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: #ff8a80;
    padding: 12px 16px;
    border-radius: 0.75rem;
    font-size: 13px;
    margin-bottom: 24px;
    text-align: center;
    animation: shake 0.4s ease-in-out;
}

.error-technical-code {
    display: block;
    font-size: 10px;
    opacity: 0.7;
    font-family: monospace;
    margin-top: 4px;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.unauthorized-overlay {
    position: fixed;
    inset: 0;
    background: var(--primary);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #fff;
}

/* ============================================================
   PRODUCTION LINE ANIMATIONS
   ============================================================ */
@keyframes pulse-bottleneck {
    0% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7); transform: scale(1); }
    50% { transform: scale(1.03); }
    70% { box-shadow: 0 0 0 30px rgba(231, 76, 60, 0); }
    100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0); transform: scale(1); }
}

@keyframes flow-line {
    from { background-position: 0 0; }
    to { background-position: 40px 0; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes lineItemFadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-arrow {
    0% { transform: translateX(0); opacity: 0.3; }
    50% { transform: translateX(5px); opacity: 0.8; }
    100% { transform: translateX(0); opacity: 0.3; }
}

}

/* Phosphor Icons: Global UI Icon System */
i.ph {
    font-size: 1.25em; /* Scale the icon naturally with text */
    vertical-align: middle;
    transition: color 0.15s ease, transform 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

i.ph-bold, i.ph-fill {
    font-weight: 800;
}

/* Nav Item Specific Transitions */
.nav-desktop-links button i.ph,
.nav-dd-wrap button i.ph {
    font-size: 1.4em;
    margin-right: 4px;
}

button:hover > i.ph {
    color: var(--enba-orange);
    transform: scale(1.1);
}