/* =========================================
   Common Tool Layout Styles — Pitch Detectors
   Brand Identity: Neon Wave Emerald, Amber Gold, Studio Obsidian
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

:root {
    --dark-blue: #0b111e;
    --mid-blue: #162032;
    --navy-surface: #101726;
    --teal: #00e599;
    /* Signature Neon Emerald Wave */
    --teal-hover: #00fca8;
    --teal-dark: #00b377;
    --teal-glow: rgba(0, 229, 153, 0.28);
    --accent: #f59e0b;
    /* Signature Amber / Gold Focal Ring */
    --accent-hover: #d97706;
    --accent-light: #fef3c7;
    --cyan: #00e5c9;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --gradient-accent: linear-gradient(135deg, #00e599 0%, #00b875 100%);
    --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
    overflow-x: hidden;
    background: var(--light-bg);
    color: var(--text-dark);
}

h1,
h2,
h3,
h4,
h5,
h6,
.h1,
.h2,
.h3,
.h4,
.h5,
.h6 {
    font-family: 'Outfit', sans-serif !important;
    letter-spacing: -0.02em;
}

@media (min-width: 1200px) {

    .h3,
    h3 {
        font-size: 16px !important;
        font-weight: 700 !important;
        color: var(--text-dark) !important;
    }

    .h4,
    h4 {
        font-size: 14px !important;
        font-weight: 700 !important;
        color: var(--text-dark) !important;
    }
}

/* ===== Sidebar Styles ===== */
.tools-sidebar {
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
    padding: 22px;
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.sidebar-search .input-group-text {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 10px 0 0 10px;
    color: var(--teal-dark);
}

.sidebar-search .form-control {
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 10px 10px 0;
    padding: 12px 15px;
    font-size: 14px;
}

.sidebar-search .form-control:focus {
    border-color: var(--teal);
    box-shadow: none;
}

.sidebar-category {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.sidebar-category:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.sidebar-category h5 {
    font-family: 'Outfit', sans-serif !important;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: color 0.25s;
}

.sidebar-category h5:hover {
    color: var(--teal-dark);
}

.sidebar-category h5 i {
    color: var(--teal-dark);
    margin-right: 8px;
}

.sidebar-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-links li {
    margin-bottom: 4px;
}

.sidebar-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    color: #334155;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.sidebar-links a:hover {
    background: #f1f5f9;
    color: var(--teal-dark);
    transform: translateX(4px);
}

.sidebar-links a.active {
    background: rgba(0, 229, 153, 0.12);
    color: #047857;
    font-weight: 700;
    border-left: 3px solid var(--teal);
}

.sidebar-links a i {
    font-size: 15px;
    width: 20px;
    text-align: center;
    color: var(--teal-dark);
}

/* ===== Tool Container ===== */
.tool-container {
    margin: 10px auto;
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 25px rgba(15, 23, 42, 0.06);
    padding: 40px;
    border-top: 4px solid var(--teal);
}

/* ===== Category Header ===== */
.category-header {
    text-align: center;
    padding: 30px 0;
}

.category-header h1 {
    font-family: 'Outfit', sans-serif !important;
    color: var(--text-dark);
    font-weight: 800;
    font-size: 34px;
    letter-spacing: -0.03em;
    margin-bottom: 15px;
}

.category-header p {
    color: var(--text-muted);
    font-size: 17px;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== Tool Title ===== */
.tool-title {
    text-align: center;
    margin-bottom: 30px;
}

.tool-title h1 {
    font-family: 'Outfit', sans-serif !important;
    font-weight: 800;
    color: var(--text-dark);
    font-size: 28px !important;
    letter-spacing: -0.02em;
}

.tool-title p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 16px;
}

/* ===== Tools Grid ===== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tool-card {
    background: #ffffff;
    border-radius: 14px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(15, 23, 42, 0.05);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--teal);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 28px rgba(0, 229, 153, 0.12);
    border-color: rgba(0, 229, 153, 0.45);
    border-left: 4px solid var(--teal);
    color: inherit;
}

.tool-card .tool-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    box-shadow: 0 6px 14px rgba(0, 229, 153, 0.3);
}

.tool-card .tool-icon i {
    font-size: 22px;
    color: #070b12;
}

.tool-card h3 {
    font-family: 'Outfit', sans-serif !important;
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.tool-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin: 0;
    line-height: 1.55;
}

/* ===== Form Elements ===== */
label {
    color: #1e293b;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
}

.form-control,
.form-select {
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--text-dark);
    font-family: 'Plus Jakarta Sans', sans-serif;
    transition: all 0.25s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 0.25rem rgba(0, 229, 153, 0.25);
    outline: none;
}

.form-control-lg {
    font-size: 17px;
    padding: 14px 14px;
}

/* ===== Quick Buttons ===== */
.speed-buttons,
.quick-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.speed-btn,
.quick-btn {
    background: #0f172a;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 9px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Outfit', sans-serif;
    font-size: 13.5px;
    font-weight: 600;
}

.speed-btn:hover,
.quick-btn:hover {
    background: var(--teal);
    color: #070b12;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 229, 153, 0.35);
}

/* ===== Primary Buttons ===== */
.btn-primary {
    background: var(--gradient-accent);
    color: #070b12 !important;
    border: none;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    border-radius: 10px;
    transition: all 0.25s ease;
    padding: 12px 24px;
    box-shadow: 0 4px 14px rgba(0, 229, 153, 0.3);
}

.btn-primary:hover {
    background: var(--gradient-gold);
    color: #070b12 !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
}

.btn-lg {
    padding: 14px 30px;
    font-size: 16px;
}

/* ===== Results Box ===== */
.result-box {
    margin-top: 30px;
    background: linear-gradient(135deg, #070b12 0%, #111a2e 100%);
    border: 1px solid rgba(0, 229, 153, 0.3);
    border-radius: 14px;
    padding: 30px;
    text-align: center;
    color: #ffffff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    position: relative;
    overflow: hidden;
}

.result-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
}

.result-box h3 {
    color: #94a3b8;
    font-family: 'Outfit', sans-serif !important;
    font-weight: 700;
    margin-bottom: 8px;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-box .result-value {
    font-family: 'Outfit', sans-serif;
    font-size: 52px;
    font-weight: 800;
    color: var(--teal);
    margin: 12px 0;
    letter-spacing: -0.03em;
    text-shadow: 0 0 25px rgba(0, 229, 153, 0.45);
}

/* ===== Tool Section ===== */
.tool-section {
    padding: 15px 0;
}

.tool-section h2 {
    font-family: 'Outfit', sans-serif !important;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

/* ===== Utility Classes ===== */
.text-teal {
    color: var(--teal-dark) !important;
}

.text-mid {
    color: #1e293b !important;
}

.text-dark-blue {
    color: var(--text-dark) !important;
}

.bg-accent {
    background-color: rgba(245, 158, 11, 0.15) !important;
    color: #b45309 !important;
}

/* ===== Accordion Styles ===== */
.accordion-item {
    border-color: var(--border-color);
}

.accordion-button {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--text-dark);
}

.accordion-button:not(.collapsed) {
    background: rgba(0, 229, 153, 0.1);
    color: #047857;
    font-weight: 700;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(0, 229, 153, 0.25);
    border-color: var(--teal);
}

/* ===== Display Styles (Tuner, Meter, etc.) ===== */
.tool-display {
    background: linear-gradient(135deg, #070b12 0%, #101726 100%);
    border: 1px solid rgba(0, 229, 153, 0.25);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: #ffffff;
    margin: 20px 0;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.tool-display .main-value {
    font-family: 'Outfit', sans-serif;
    font-size: 72px;
    font-weight: 800;
    line-height: 1;
    color: var(--teal);
    text-shadow: 0 0 30px rgba(0, 229, 153, 0.5);
    letter-spacing: -0.03em;
}

.tool-display .sub-value {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    color: var(--accent);
    margin-top: 10px;
    font-weight: 600;
}

/* ===== Start/Stop Button ===== */
.action-btn {
    background: var(--gradient-accent);
    color: #070b12;
    border: none;
    padding: 15px 42px;
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 800;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 6px 20px rgba(0, 229, 153, 0.35);
}

.action-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 25px rgba(0, 229, 153, 0.5);
    color: #070b12;
}

.action-btn.active {
    background: #ef4444;
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

/* ===== Meter Styles ===== */
.meter-container {
    margin: 30px auto;
    max-width: 420px;
}

.meter-bar {
    height: 22px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.meter-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 32px;
    background: var(--accent);
    border-radius: 4px;
    box-shadow: 0 0 14px rgba(245, 158, 11, 0.9);
    transition: left 0.1s ease;
}

.meter-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 12px;
    color: #94a3b8;
}

/* ===== Reference Items ===== */
.reference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.reference-item {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
}

.reference-item:hover {
    border-color: var(--teal);
    background: rgba(0, 229, 153, 0.08);
    transform: translateY(-2px);
}

.reference-item .value {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

.reference-item .label {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
    .tools-sidebar {
        position: relative;
        top: 0;
        max-height: none;
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .tool-container {
        margin: 1px;
        padding: 16px;
    }

    .p-4 {
        padding: 12px !important;
    }

    .tool-title h1 {
        font-size: 22px !important;
    }

    .tool-display .main-value {
        font-size: 48px;
    }

    .result-box .result-value {
        font-size: 36px;
    }

    .category-header h1 {
        font-size: 26px;
    }

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

@media (max-width: 576px) {
    .quick-buttons {
        justify-content: center;
    }

    .quick-btn {
        padding: 8px 12px;
        font-size: 13px;
    }
}

/* ===== Search Results Highlight ===== */
.search-highlight {
    background: rgba(0, 229, 153, 0.25);
    color: #047857;
    border-radius: 3px;
    padding: 0 4px;
    font-weight: 700;
}

.no-results {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
}

.hidden {
    display: none !important;
}

/* ===== Mobile Sidebar Toggle ===== */
@media (max-width: 991px) {
    .tools-sidebar {
        display: none;
    }

    .tools-sidebar.mobile-open {
        display: block !important;
        background: #ffffff;
        padding: 15px;
        border-radius: 12px;
        box-shadow: 0 6px 20px rgba(15, 23, 42, 0.12);
    }
}

.sidebar-toggle {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    border-radius: 10px;
    background: var(--gradient-accent);
    color: #070b12;
    border: none;
    margin-bottom: 15px;
    box-shadow: 0 4px 12px rgba(0, 229, 153, 0.3);
}

.sidebar-toggle:hover {
    background: var(--gradient-gold);
    color: #070b12;
}

/* =========================================
   Universal High-Contrast Typography System
   ========================================= */

/* Bulletproof text-muted: Crisp on light, never dark on dark */
.text-muted {
    color: #475569 !important; /* Crisp slate-600 with 7.3:1 contrast on white */
}

/* Dark containers must NEVER have dark or muted unreadable text */
.bg-dark,
[class*="bg-dark"],
.result-box,
.dark-box {
    color: #f8fafc;
}

.bg-dark .text-muted,
[class*="bg-dark"] .text-muted,
.result-box .text-muted,
.dark-box .text-muted {
    color: #cbd5e1 !important; /* High-contrast slate-300 with 11:1 contrast on dark */
}

.bg-dark .text-dark,
[class*="bg-dark"] .text-dark,
.result-box .text-dark,
.dark-box .text-dark {
    color: #f8fafc !important; /* Pure light text, never black on dark */
}

.bg-dark .form-label,
[class*="bg-dark"] .form-label,
.bg-dark .form-check-label,
[class*="bg-dark"] .form-check-label {
    color: #f8fafc !important;
}

/* Result Box Typography */
.result-box {
    color: #ffffff !important;
}

.result-box h1,
.result-box h2,
.result-box h3,
.result-box h4,
.result-box .h1,
.result-box .h2,
.result-box .h3,
.result-box .h4 {
    color: #ffffff !important;
}

.result-box p,
.result-box span:not(.text-teal):not(.text-success):not(.text-danger):not(.badge) {
    color: #e2e8f0 !important;
}

/* Result Highlight (Mint green card) Typography */
.result-highlight {
    background: #f0fdf4 !important;
    border: 2px solid #00e599 !important;
    border-radius: 12px;
    padding: 22px;
    text-align: center;
    color: #0f172a !important;
}

.result-highlight .result-label,
.result-highlight .text-muted,
.result-highlight .small.text-muted {
    color: #065f46 !important; /* Deep emerald - crisp 8.5:1 contrast on mint */
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.result-highlight .text-dark {
    color: #0f172a !important;
    font-size: 1.05rem;
    font-weight: 700;
}

.result-highlight .result-verification,
.result-highlight .small.text-muted.mt-1 {
    color: #1e293b !important;
    font-size: 0.92rem;
    font-weight: 500;
}

/* Educational Article Lead Typography */
.tool-container .lead,
.tool-container .lead strong,
article .lead,
article .lead strong {
    color: #0f172a !important; /* Crisp slate-900, highly readable */
    font-weight: 500;
    line-height: 1.7;
}

/* Sidebar Typography */
.tools-sidebar .h5,
.tools-sidebar h5,
.sidebar-category p.h5,
.sidebar-category h5 {
    color: #0f172a !important;
    font-weight: 700;
}

.sidebar-links a {
    color: #334155 !important;
    font-weight: 500;
}

.sidebar-links a:hover,
.sidebar-links a.active {
    color: #00b377 !important;
    font-weight: 700;
}