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

:root {
    --primary-bg: #f3f2ef; /* LinkedIn Light Gray */
    --sidebar-bg: #ffffff;
    --card-bg: #ffffff;

    --text-primary: rgba(0, 0, 0, 0.9);
    --text-secondary: rgba(0, 0, 0, 0.6);
    --text-on-dark: #ffffff;

    --accent-blue: #0a66c2; /* LinkedIn Blue */
    --accent-blue-light: #eef3f8;
    --accent-blue-dark: #004182;

    --accent-forest: #004182; 
    --accent-forest-light: #eef3f8;

    --accent-emerald: #057642; /* LinkedIn Green for success */
    --accent-emerald-light: #eef3f8;

    --accent-rose: #cc1016;
    --accent-rose-light: #f9eaea;

    --accent-amber: #915907;
    --accent-amber-light: #fdf5e8;

    --border-color: #dce6f1;

    --shadow-sm: 0 0 0 1px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);

    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.2s ease-out;
    
    --sidebar-width: 280px;
}

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

body {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    font-size: 14px;
}

/* ── Layout ── */
#app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* ── Sidebar ── */
#sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    transition: var(--transition-normal);
}

.sidebar-header {
    padding: 24px;
    background: var(--accent-blue); /* LinkedIn Blue Header */
    margin-bottom: 8px;
}

.sidebar-header h2 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.sidebar-header p {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.8);
    font-weight: 400;
}

.nav-links {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

#sidebar .nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    border-left: 4px solid transparent;
}

#sidebar .nav-links a:hover {
    background: var(--accent-blue-light);
    color: var(--accent-blue);
}

#sidebar .nav-links a.active {
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
    font-weight: 700;
}

.nav-links a i {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    opacity: 0.7;
}

}

.nav-links a:hover i { opacity: 1; }

.nav-links a.active {
    background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 100%);
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 2px 10px rgba(59,130,246,0.4);
}

.nav-links a.active i { opacity: 1; }

/* ── Main Content ── */
#main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 58px;
    box-shadow: var(--shadow-sm);
    z-index: 5;
}

.header-title h1 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.4px;
}

.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    font-size: 0.82rem;
    font-weight: 700;
    font-family: 'Plus Jakarta Sans', sans-serif;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    gap: 6px;
    letter-spacing: 0.2px;
}

.btn i {
    width: 14px;
    height: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    box-shadow: 0 2px 8px rgba(37,99,235,0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #6d28d9);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(37,99,235,0.4);
}

.btn-secondary {
    background-color: white;
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
    font-weight: 600;
}

.btn-secondary:hover {
    background-color: var(--primary-bg);
    border-color: #9ca3af;
}

/* ── Content Area ── */
#content-area {
    flex: 1;
    padding: 22px 26px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* ── Module Layout ── */
.module-container {
    max-width: 1200px;
    margin: 0 auto;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

/* ── Tabs ── */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
    gap: 2px;
}

.tab-btn {
    background: transparent;
    border: none;
    padding: 9px 18px;
    font-size: 0.82rem;
    font-weight: 700;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
    border-radius: 8px 8px 0 0;
    letter-spacing: 0.2px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(37,99,235,0.04);
}

.tab-btn.active {
    color: var(--accent-blue);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2.5px;
    background: linear-gradient(90deg, #2563eb, #7c3aed);
    border-radius: 2px;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

/* ── Cards ── */
.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 20px 22px;
    margin-bottom: 18px;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 0.98rem;
    font-weight: 800;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    letter-spacing: -0.2px;
}

.card-title i {
    color: var(--accent-blue);
}

/* ── Forms ── */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.form-control {
    width: 100%;
    padding: 8px 11px;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    background: #fafafa;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    color: var(--text-primary);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
    background: #fff;
}

/* ── Grids ── */
.grid-2 { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 18px; 
}
.grid-3 { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
    gap: 18px; 
}

@media (max-width: 1024px) {
    #app-container {
        flex-direction: column;
    }
    #sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .sidebar-header {
        padding: 20px;
    }
    .nav-links {
        display: flex;
        overflow-x: auto;
        padding: 10px;
        white-space: nowrap;
    }
    .nav-links li {
        margin-bottom: 0;
        margin-right: 10px;
    }
    #sidebar .nav-links a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    #main-content {
        height: auto;
        overflow: visible;
    }
    #content-area {
        padding: 15px;
    }
}

@media (max-width: 640px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    .header-title h1 {
        font-size: 1rem;
    }
    .btn {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

/* ── Tables ── */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 14px;
    font-size: 0.84rem;
}

th, td {
    padding: 10px 13px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: linear-gradient(180deg, #f8fafc, #f1f5f9);
    font-weight: 700;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-secondary);
}

tr:hover {
    background-color: #fafafa;
}

/* ── Charts ── */
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}

/* ── Resource Cards ── */
.resource-card {
    background: var(--card-bg);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.resource-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: #cbd5e1;
}

.resource-card h3 {
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: 7px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
}

.resource-card p {
    font-size: 0.79rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 9px;
}

.resource-card a {
    font-size: 0.78rem;
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.resource-card a:hover { text-decoration: underline; }

/* ── Modals ── */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(17,24,39,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    backdrop-filter: blur(3px);
}
.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal-content {
    background: var(--card-bg);
    border-radius: 16px;
    width: 90%;
    max-width: 560px;
    padding: 26px;
    box-shadow: var(--shadow-lg);
    transform: translateY(14px);
    transition: transform var(--transition-fast);
    border: 1px solid var(--border-color);
}
.modal-overlay.active .modal-content { transform: translateY(0); }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}
.modal-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--accent-forest);
    display: flex;
    align-items: center;
    gap: 8px;
}
.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
    border-radius: 6px;
    transition: background-color var(--transition-fast);
}
.modal-close:hover { background-color: var(--primary-bg); }

.step-content {
    background: #f8fafc;
    padding: 14px 16px;
    border-radius: 10px;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.9;
    border: 1px solid var(--border-color);
}

.cell-interactive {
    cursor: pointer;
    transition: background-color var(--transition-fast);
    position: relative;
}
.cell-interactive:hover { background-color: var(--accent-forest-light) !important; }
.cell-interactive::after {
    content: "?";
    position: absolute;
    top: 2px; right: 4px;
    font-size: 0.62rem;
    color: var(--accent-forest);
    opacity: 0.65;
}

/* ── Validation ── */
.input-correct   { border-color: var(--accent-green) !important; background-color: var(--accent-green-light) !important; }
.input-incorrect { border-color: var(--accent-red)   !important; background-color: var(--accent-red-light)   !important; }

/* ── Integration page styles ── */
.stage-stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 28px;
    flex-wrap: wrap;
    row-gap: 10px;
}

/* ── Buttons & Dropdowns ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 8px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    min-width: 180px;
    overflow: hidden;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.dropdown-menu a:hover {
    background: var(--primary-bg);
    color: var(--accent-blue);
}

.dropdown-menu a i {
    width: 16px;
    height: 16px;
}

/* ── Print Styles for PDF ── */
@media print {
    #sidebar, .header-actions, .tabs, .concept-box, .btn, .dropdown {
        display: none !important;
    }
    #app-container {
        display: block !important;
    }
    #main-content {
        padding: 0 !important;
        margin: 0 !important;
    }
    .card {
        box-shadow: none !important;
        border: 1px solid #eee !important;
        page-break-inside: avoid;
    }
    body {
        background: #fff !important;
    }
}

.stage-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    flex-shrink: 0;
}
.stage-step:hover { border-color: var(--accent-blue); box-shadow: var(--shadow-sm); }
.stage-step.active-step { border-color: var(--accent-blue); background: var(--accent-blue-light); }
.stage-step.completed-step { border-color: var(--accent-green); background: var(--accent-green-light); }
.stage-step-num {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--border-color);
    color: var(--text-secondary);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 0.75rem; flex-shrink: 0;
}
.stage-step.active-step    .stage-step-num { background: linear-gradient(135deg, #2563eb, #7c3aed); color: white; }
.stage-step.completed-step .stage-step-num { background: var(--accent-green); color: white; }
.stage-step-label { font-size: 0.78rem; font-weight: 700; color: var(--text-secondary); }
.stage-step.active-step    .stage-step-label { color: var(--accent-blue); }
.stage-step.completed-step .stage-step-label { color: var(--accent-green); }
.stage-connector { width: 28px; height: 2px; background: var(--border-color); flex-shrink: 0; }
.stage-panel { display: none; animation: fadeIn var(--transition-normal); }
.stage-panel.active { display: block; }
.stage-card {
    border-left: 5px solid var(--accent-blue);
    border-radius: 12px;
    background: var(--card-bg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 18px;
}
.handoff-card {
    background: linear-gradient(135deg, #eff6ff, #f0fdf4);
    border: 1.5px dashed var(--accent-blue);
    border-radius: 10px;
    padding: 16px 20px;
    margin: 14px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.handoff-arrow { font-size: 1.4rem; color: var(--accent-blue); flex-shrink: 0; margin-top: 2px; }
.result-highlight {
    background: linear-gradient(135deg, var(--accent-blue-light), #f0fdf4);
    border-radius: 10px;
    padding: 12px 18px;
    border: 1px solid rgba(37,99,235,0.2);
    margin-top: 14px;
}
.result-highlight .key-metric { font-size: 1.7rem; font-weight: 800; color: var(--accent-blue); line-height: 1.2; }
.result-highlight .key-label  { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }
.concept-box {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-left: 4px solid var(--accent-amber);
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 18px;
    font-size: 0.85rem;
    color: #78350f;
    line-height: 1.6;
    font-weight: 500;
}
.stage-nav-btns {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--border-color);
}