/*
 * SumZA Calculator Styles
 * South Africa's Free Calculator Portal
 * Version: 1.0.0
 */

/* ============================================
   VARIABLES
   ============================================ */
:root {
    --sumza-primary: #0057B8;
    --sumza-primary-dark: #003D80;
    --sumza-primary-light: #E6F0FF;
    --sumza-secondary: #0099CC;
    --sumza-accent: #00C896;
    --sumza-accent-dark: #009B74;
    --sumza-bg: #F7F9FC;
    --sumza-surface: #FFFFFF;
    --sumza-surface-alt: #F0F4F8;
    --sumza-text: #1A1A1A;
    --sumza-text-secondary: #5A6B7B;
    --sumza-text-muted: #8A9BAB;
    --sumza-success: #16A34A;
    --sumza-success-light: #F0FFF4;
    --sumza-warning: #F59E0B;
    --sumza-error: #DC2626;
    --sumza-input-bg: #FFFFFF;
    --sumza-input-border: #D1D5DB;
    --sumza-input-focus: #0057B8;
    --sumza-result-bg: #F0FFF4;
    --sumza-result-border: #00C896;
    --sumza-radius: 8px;
    --sumza-radius-lg: 12px;
    --sumza-shadow: 0 1px 3px rgba(0,0,0,0.1);
    --sumza-shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
    --sumza-shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
    --sumza-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --sumza-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --sumza-transition: all 0.2s ease;
}

/* ============================================
   CALCULATOR CONTAINER
   ============================================ */
.sumza-calculator {
    max-width: 680px;
    margin: 2rem auto;
    padding: 0;
    font-family: var(--sumza-font);
    color: var(--sumza-text);
}

.sumza-calc-header {
    margin-bottom: 1.5rem;
}

.sumza-calc-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sumza-primary);
    margin: 0 0 0.5rem;
    line-height: 1.3;
}

.sumza-calc-subtitle {
    font-size: 1rem;
    color: var(--sumza-text-secondary);
    margin: 0;
}

/* ============================================
   FORM STYLES
   ============================================ */
.sumza-calc-form {
    background: var(--sumza-surface);
    border-radius: var(--sumza-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--sumza-shadow);
    border: 1px solid #E5E7EB;
}

.sumza-field-group {
    margin-bottom: 1.25rem;
}

.sumza-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--sumza-text);
    margin-bottom: 0.5rem;
}

.sumza-tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.2rem;
    height: 1.2rem;
    border-radius: 50%;
    background: var(--sumza-primary-light);
    color: var(--sumza-primary);
    font-size: 0.7rem;
    cursor: help;
    font-weight: 600;
}

.sumza-tooltip:hover {
    background: var(--sumza-primary);
    color: #fff;
}

.sumza-input-wrapper {
    display: flex;
    align-items: center;
    border: 2px solid var(--sumza-input-border);
    border-radius: var(--sumza-radius);
    overflow: hidden;
    transition: var(--sumza-transition);
    background: var(--sumza-input-bg);
}

.sumza-input-wrapper:focus-within {
    border-color: var(--sumza-input-focus);
    box-shadow: 0 0 0 3px rgba(0, 87, 184, 0.15);
}

.sumza-input-prefix,
.sumza-input-suffix {
    padding: 0.75rem;
    background: var(--sumza-surface-alt);
    color: var(--sumza-text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    border: none;
}

.sumza-input-prefix {
    border-right: 2px solid var(--sumza-input-border);
}

.sumza-input-suffix {
    border-left: 2px solid var(--sumza-input-border);
}

.sumza-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    outline: none;
    font-size: 1rem;
    font-family: var(--sumza-font-mono);
    color: var(--sumza-text);
    background: transparent;
    min-width: 0;
}

.sumza-input::placeholder {
    color: var(--sumza-text-muted);
    font-family: var(--sumza-font);
}

.sumza-input:focus {
    outline: none;
}

/* Number input - hide spinners */
.sumza-input::-webkit-inner-spin-button,
.sumza-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.sumza-input[type=number] {
    -moz-appearance: textfield;
}

.sumza-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--sumza-input-border);
    border-radius: var(--sumza-radius);
    font-size: 0.95rem;
    font-family: var(--sumza-font);
    color: var(--sumza-text);
    background: var(--sumza-input-bg);
    cursor: pointer;
    transition: var(--sumza-transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A6B7B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.sumza-select:focus {
    border-color: var(--sumza-input-focus);
    box-shadow: 0 0 0 3px rgba(0, 87, 184, 0.15);
    outline: none;
}

/* ============================================
   BUTTONS
   ============================================ */
.sumza-calculate-btn {
    display: block;
    width: 100%;
    padding: 1rem;
    background: var(--sumza-primary);
    color: #fff;
    border: none;
    border-radius: var(--sumza-radius);
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--sumza-font);
    cursor: pointer;
    transition: var(--sumza-transition);
    margin-top: 1.5rem;
    letter-spacing: 0.02em;
}

.sumza-calculate-btn:hover {
    background: var(--sumza-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--sumza-shadow-hover);
}

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

.sumza-reset-btn {
    display: block;
    width: 100%;
    padding: 0.75rem;
    background: transparent;
    color: var(--sumza-text-secondary);
    border: 2px solid var(--sumza-input-border);
    border-radius: var(--sumza-radius);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--sumza-font);
    cursor: pointer;
    transition: var(--sumza-transition);
    margin-top: 0.75rem;
}

.sumza-reset-btn:hover {
    border-color: var(--sumza-text-secondary);
    color: var(--sumza-text);
}

/* ============================================
   RESULTS
   ============================================ */
.sumza-results {
    margin-top: 1.5rem;
    background: var(--sumza-result-bg);
    border: 2px solid var(--sumza-result-border);
    border-radius: var(--sumza-radius-lg);
    padding: 1.5rem;
    animation: sumzaFadeIn 0.3s ease-in-out;
}

@keyframes sumzaFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.sumza-results-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sumza-accent-dark);
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sumza-results-title::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--sumza-accent);
    color: #fff;
    font-size: 0.8rem;
}

.sumza-results-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sumza-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 200, 150, 0.2);
}

.sumza-result-item:last-child {
    border-bottom: none;
}

.sumza-result-label {
    font-size: 0.95rem;
    color: var(--sumza-text-secondary);
}

.sumza-result-value {
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--sumza-font-mono);
    color: var(--sumza-text);
}

.sumza-result-item.highlight .sumza-result-value {
    font-size: 1.25rem;
    color: var(--sumza-primary);
    font-weight: 700;
}

.sumza-result-item.highlight {
    background: rgba(0, 87, 184, 0.05);
    padding: 0.75rem;
    border-radius: var(--sumza-radius);
    margin-top: 0.5rem;
    border-bottom: none;
}

.sumza-results-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 200, 150, 0.3);
}

.sumza-share-btn,
.sumza-print-btn {
    flex: 1;
    padding: 0.6rem;
    border: 2px solid var(--sumza-input-border);
    border-radius: var(--sumza-radius);
    background: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--sumza-font);
    cursor: pointer;
    transition: var(--sumza-transition);
    color: var(--sumza-text-secondary);
}

.sumza-share-btn:hover,
.sumza-print-btn:hover {
    border-color: var(--sumza-primary);
    color: var(--sumza-primary);
}

/* ============================================
   DISCLAIMER
   ============================================ */
.sumza-disclaimer {
    font-size: 0.8rem;
    color: var(--sumza-text-muted);
    text-align: center;
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--sumza-surface-alt);
    border-radius: var(--sumza-radius);
    line-height: 1.5;
}

/* ============================================
   AD SLOTS
   ============================================ */
.sumza-ad-slot {
    text-align: center;
    margin: 1.5rem auto;
    min-height: 90px;
}

.sumza-ad-slot.sumza-ad-header {
    min-height: 90px;
}

.sumza-ad-slot.sumza-ad-sidebar {
    min-height: 600px;
}

.sumza-ad-slot.sumza-ad-mobile-sticky {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: #fff;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    min-height: 50px;
    padding: 5px 0;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .sumza-calculator {
        margin: 1rem;
    }
    
    .sumza-calc-form {
        padding: 1rem;
    }
    
    .sumza-calc-title {
        font-size: 1.25rem;
    }
    
    .sumza-input {
        font-size: 16px; /* Prevents iOS zoom */
    }
    
    .sumza-calculate-btn {
        position: sticky;
        bottom: 60px;
        z-index: 10;
        box-shadow: var(--sumza-shadow-lg);
    }
    
    .sumza-results-actions {
        flex-direction: column;
    }
    
    .sumza-ad-slot.sumza-ad-sidebar {
        display: none;
    }
    
    .sumza-ad-slot.sumza-ad-mobile-sticky {
        display: block;
    }
}

@media (min-width: 769px) {
    .sumza-ad-slot.sumza-ad-mobile-sticky {
        display: none;
    }
}

/* ============================================
   DARK MODE (prefers-color-scheme)
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --sumza-bg: #0F172A;
        --sumza-surface: #1E293B;
        --sumza-surface-alt: #334155;
        --sumza-text: #F1F5F9;
        --sumza-text-secondary: #94A3B8;
        --sumza-text-muted: #64748B;
        --sumza-input-bg: #1E293B;
        --sumza-input-border: #475569;
        --sumza-result-bg: #0A2540;
        --sumza-result-border: #00C896;
        --sumza-success-light: #0A2540;
    }
    
    .sumza-calculate-btn {
        background: var(--sumza-secondary);
    }
    
    .sumza-calculate-btn:hover {
        background: var(--sumza-primary);
    }
    
    .sumza-disclaimer {
        background: var(--sumza-surface-alt);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .sumza-calculate-btn,
    .sumza-reset-btn,
    .sumza-results-actions,
    .sumza-ad-slot {
        display: none !important;
    }
    
    .sumza-calculator {
        max-width: 100%;
        margin: 0;
    }
    
    .sumza-results {
        display: block !important;
        break-inside: avoid;
    }
}