/* PREMIUM CALCULATOR STYLES v20 - FULL COMPLETE */
:root {
    --calc-primary: #13961f;
    --calc-dark: #0e7017;
    --calc-gold: #efc71a;
    --calc-bg: #ffffff;
    --calc-gray: #f9fbf9;
    --calc-text: #333333;
    --calc-border: #e0e0e0;
}

/* --- Container --- */
.calc-wrapper {
    background: #ffffff !important;
    border: 1px solid var(--calc-border) !important;
    border-top: 5px solid var(--calc-primary) !important;
    border-radius: 12px !important;
    padding: 35px 40px !important;
    box-shadow: 0 15px 40px rgba(0,0,0,0.08) !important;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif !important;
    width: 100% !important;
    max-width: 850px !important;
    margin: 0 auto 40px auto !important;
    box-sizing: border-box !important;
}

/* --- Grid --- */
.calc-row {
    display: flex !important;
    flex-wrap: wrap !important;
    gap: 25px !important;
    margin-bottom: 25px !important;
    align-items: flex-start !important;
}
.calc-col-6 { width: calc(50% - 12.5px) !important; flex: 0 0 calc(50% - 12.5px) !important; }
.calc-col-12 { width: 100% !important; flex: 0 0 100% !important; }

/* --- Inputs --- */
.calc-group { display: flex !important; flex-direction: column !important; gap: 8px !important; width: 100% !important; }
.calc-label {
    font-weight: 700 !important; font-size: 14px !important; color: #444 !important;
    text-transform: uppercase !important; letter-spacing: 0.5px !important; display: block !important;
}
.calc-input, .calc-select {
    width: 100% !important; height: 50px !important; background: #fff !important;
    border: 2px solid #e0e0e0 !important; border-radius: 8px !important; padding: 0 15px !important;
    font-size: 16px !important; color: #333 !important; transition: all 0.2s ease !important;
    box-sizing: border-box !important;
}
.calc-input:focus, .calc-select:focus {
    border-color: var(--calc-primary) !important; box-shadow: 0 0 0 4px rgba(19, 150, 31, 0.1) !important; outline: none !important;
}

/* --- Buttons --- */
.calc-btn-row { margin-top: 20px !important; display: flex !important; gap: 15px !important; }
.calc-btn {
    flex: 1 !important; height: 55px !important; background: linear-gradient(135deg, var(--calc-primary), var(--calc-dark)) !important;
    color: #fff !important; border: none !important; border-radius: 50px !important;
    font-size: 16px !important; font-weight: 800 !important; text-transform: uppercase !important;
    cursor: pointer !important; box-shadow: 0 5px 15px rgba(19, 150, 31, 0.3) !important; transition: transform 0.2s !important;
}
.calc-btn:hover { transform: translateY(-2px) !important; color: var(--calc-gold) !important; }
.calc-btn-clear { flex: 0 0 120px !important; background: #f0f0f0 !important; color: #666 !important; box-shadow: none !important; }

/* --- Results --- */
.calc-result-box {
    margin-top: 35px !important; background: var(--calc-gray) !important;
    border: 1px solid #e0e0e0 !important; border-left: 5px solid var(--calc-primary) !important;
    border-radius: 10px !important; padding: 30px !important; display: none; animation: fadeIn 0.4s ease;
}
@keyframes fadeIn { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }
.result-header { font-size: 13px !important; font-weight: 700 !important; color: #888 !important; text-transform: uppercase !important; margin-bottom: 5px !important; }
.result-value { font-size: 38px !important; font-weight: 900 !important; color: var(--calc-primary) !important; line-height: 1.1 !important; }
.result-sub { font-size: 15px !important; color: #666 !important; margin-top: 5px !important; }
.chart-container { width: 100% !important; height: 300px !important; margin-top: 20px !important; position: relative !important; }

/* --- Toggles --- */
.calc-toggles { display: flex !important; gap: 25px !important; margin-bottom: 30px !important; border-bottom: 1px solid #eee !important; padding-bottom: 15px !important; }
.calc-radio-label { font-weight: 600 !important; color: #555 !important; cursor: pointer !important; display: flex !important; align-items: center !important; gap: 8px !important; }
.calc-radio-label input { width: 18px !important; height: 18px !important; accent-color: var(--calc-primary) !important; }

/* --- SCIENTIFIC & BASIC CALCULATOR KEYS --- */
.sci-calc-grid, .basic-calc-grid {
    display: grid !important; grid-template-columns: repeat(4, 1fr) !important; gap: 10px !important; margin-top: 15px !important;
}
.sci-btn {
    height: 50px !important; border: 1px solid #e0e0e0 !important; background: #f9f9f9 !important;
    border-radius: 8px !important; font-size: 18px !important; font-weight: 600 !important; color: #333 !important;
    cursor: pointer !important; transition: 0.2s !important;
}
.sci-btn:hover { background: #eee !important; }
.sci-btn.op { background: var(--calc-primary) !important; color: white !important; border: none !important; }
.sci-btn.op:hover { opacity: 0.9 !important; }
.sci-btn.equal { grid-column: span 4 !important; background: var(--calc-gold) !important; color: #000 !important; border: none !important; }
.sci-display {
    width: 100% !important; height: 60px !important; font-size: 24px !important; text-align: right !important;
    padding: 10px !important; background: #222 !important; color: #0f0 !important;
    font-family: 'Courier New', monospace !important; border-radius: 8px !important; margin-bottom: 10px !important; border: none !important;
}

@media (max-width: 700px) { .calc-wrapper { padding: 25px !important; } .calc-col-6 { width: 100% !important; flex: 0 0 100% !important; } }