/* =============== CALCULATIONS PAGE =============== */
.calculations-content {
    padding: 2.5rem; 
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    margin-top: 2rem;
    box-shadow: var(--glass-shadow);
}

.formula-section, .step-by-step-section, .orbital-data-section, .interactive-calculator, .example-section, .accuracy-note {
    text-align: center;
    margin-bottom: 4.5rem;
}

.formula-section h2, .step-by-step-section h2, .orbital-data-section h2, .interactive-calculator h2, .example-section h2, .accuracy-note h2 {
    font-size: 2.2rem;
    color: var(--accent-cyan);
    margin-bottom: 2rem;
    font-weight: 700;
}

.formula-display {
    display: flex;
    align-content: center;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.formula-box {
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: inline-block;
    justify-content: center;
}

.formula-box h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
    font-weight: 600;
}

.fraction {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.numerator {
    padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--glass-border);
    margin-bottom: 0.8rem;
    color: var(--accent-purple);
}

.denominator {
    padding-top: 0.5rem;
}

.formula-explanation {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.step-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    transition: var(--transition);
}

.step-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.step-number {
    min-width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.4rem;
    color: #fff;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(79, 172, 254, 0.3);
}

.step-content {
    text-align: left;
    width: 100%;
    min-width: 0;
}

.step-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: var(--accent-blue);
}

.step-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

.code-snippet-wrapper {
    background: rgba(0, 0, 0, 0.4);
    padding: 1rem;
    border-radius: 12px;
    overflow-x: auto;
    border: 1px solid var(--glass-border);
}

.code-snippet-wrapper code {
    font-family: 'Fira Code', Consolas, monospace;
    font-size: 0.9rem;
    color: var(--accent-cyan);
    white-space: nowrap;
}

/* ==========================================
   ORBITAL DATA
   ========================================== */
.data-table-container {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.orbital-table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
}

.orbital-table th,
.orbital-table td {
    padding: 1.2rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-main);
}

.orbital-table th {
    background: rgba(255, 255, 255, 0.05);
    font-weight: 600;
    color: var(--accent-blue);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.orbital-table tr:last-child td {
    border-bottom: none;
}

.orbital-table tbody tr {
    transition: var(--transition);
}

.orbital-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* ==========================================
   INTERACTIVE CALCULATOR
   ========================================== */
.calculator-container {
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-width: 800px;
    margin: 0 auto;
}

.calculator-input {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    align-items: flex-end;
    justify-content: center;
}

.calculator-input-group {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-width: 200px;
    text-align: left;
}

.calculator-input label {
    font-size: 1rem;
    margin-bottom: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.calculator-input input[type="number"] {
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.2);
    color: white;
    font-size: 1.1rem;
    transition: var(--transition);
    width: 100%;
}

.calculator-input input[type="number"]:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.calc-btn {
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 200px;
    box-shadow: 0 8px 20px rgba(79, 172, 254, 0.3);
}

.calc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(79, 172, 254, 0.4);
    filter: brightness(1.1);
}

.calculator-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
}

/* ==========================================
   PLANET RESULT
   ========================================== */
.planet-result {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem 1rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.planet-result:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.planet-result h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--accent-blue);
}

.planet-result .planet-age {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.5rem;
}

.planet-result .planet-details {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================
   EXAMPLES & NOTES
   ========================================== */
.example-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.example-problem,
.example-solution {
    padding: 2rem;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
}

.example-problem h3,
.example-solution h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

.example-problem p,
.example-solution p,
.example-solution ul {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-main);
}

.example-solution ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.example-solution ul li {
    margin-bottom: 0.5rem;
}

.accuracy-note-content {
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.accuracy-note-content p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.accuracy-note-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 992px) {
    .example-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .calculations-content {
        padding: 1.5rem;
    }

    .step-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .formula-section h2, .step-by-step-section h2, .orbital-data-section h2, .interactive-calculator h2, .example-section h2, .accuracy-note h2 {
        font-size: 1.8rem;
    }

    .data-table-container {
        border-radius: 12px;
    }

    .orbital-table thead {
        display: none;
    }

    .orbital-table tr {
        display: block;
        border-bottom: 1px solid var(--glass-border);
        padding: 1rem;
    }
    
    .orbital-table tr:last-child {
        border-bottom: none;
    }

    .orbital-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: right;
        padding: 0.8rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .orbital-table td:last-child {
        border-bottom: none;
    }

    .orbital-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--accent-blue);
        text-align: left;
        margin-right: 1rem;
    }

    .calculator-input {
        flex-direction: column;
        align-items: stretch;
    }
    
    .calc-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .formula-box, .example-container, .accuracy-note-content, .calculator-container {
        padding: 1.5rem;
    }
    
    .fraction {
        font-size: 1.2rem;
    }
}