/* 
 * Crypto Profit Calculator - Main Stylesheet
 * Mobile-first responsive design
 */

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

.cpc-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #ffffff;
    color: #111827;
    line-height: 1.6;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    padding: 0.75rem;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

.cpc-container h1,
.cpc-container h2,
.cpc-container h3 {
    font-weight: 600;
    line-height: 1.3;
}

.cpc-container h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    margin-bottom: 0.5rem;
}

.cpc-container h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 1.5rem;
}

.cpc-container h3 {
    font-size: clamp(1.1rem, 3vw, 1.25rem);
    margin-bottom: 1rem;
}

.cpc-container p {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    margin-bottom: 1rem;
}

/* ==========================================================================
   TITLE SECTION
   ========================================================================== */

.cpc-title-section {
    background-color: #2CEC00;
    color: #ffffff;
    text-align: center;
    padding: 2rem 1rem;
    border-radius: 0.75rem;
    margin-bottom: 2rem;
    width: 100%;
}

.cpc-title-section p {
    font-size: clamp(1rem, 3vw, 1.25rem);
    opacity: 0.9;
    margin-bottom: 0;
}

/* ==========================================================================
   CARD LAYOUTS
   ========================================================================== */

.cpc-card {
    background-color: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    width: 100%;
}

/* ==========================================================================
   FORM STYLES
   ========================================================================== */

.cpc-form-group {
    margin-bottom: 1.25rem;
    width: 100%;
}

.cpc-form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #374151;
}

.cpc-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    background-color: #ffffff;
    color: #111827;
    transition: border-color 0.2s, box-shadow 0.2s;
    min-height: 44px; /* Touch-friendly */
}

.cpc-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.cpc-input:invalid {
    border-color: #ef4444;
}

/* Form Grid Layout */
.cpc-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   BUTTON STYLES
   ========================================================================== */

.cpc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 44px; /* Touch-friendly */
    min-width: 44px; /* Touch-friendly */
    width: 100%;
    margin-bottom: 0.75rem;
}

.cpc-btn-primary {
    background-color: #22c55e;
    color: white;
}

.cpc-btn-primary:hover,
.cpc-btn-primary:focus {
    background-color: #16a34a;
    transform: translateY(-1px);
}

.cpc-btn-secondary {
    background-color: #2563eb;
    color: white;
}

.cpc-btn-secondary:hover,
.cpc-btn-secondary:focus {
    background-color: #1d4ed8;
    transform: translateY(-1px);
}

.cpc-button-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* ==========================================================================
   ADVANCED OPTIONS
   ========================================================================== */

.cpc-toggle-advanced {
    background: none;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 0.875rem 1rem;
    font-size: 0.875rem;
    color: #374151;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 1rem;
    transition: all 0.2s;
}

.cpc-toggle-advanced:hover {
    background-color: #f3f4f6;
}

.cpc-toggle-advanced[aria-expanded="true"] .cpc-toggle-icon {
    transform: rotate(180deg);
}

.cpc-toggle-icon {
    transition: transform 0.2s;
}

.cpc-advanced-options {
    animation: fadeIn 0.3s ease;
}

.cpc-advanced-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-top: 1rem;
}

/* ==========================================================================
   LOADING INDICATOR
   ========================================================================== */

.cpc-loading {
    text-align: center;
    padding: 2rem;
    margin: 1.5rem 0;
}

.cpc-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e5e7eb;
    border-top-color: #22c55e;
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

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

/* ==========================================================================
   RESULTS SECTION
   ========================================================================== */

.cpc-results-section {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ==========================================================================
   SUMMARY CARDS
   ========================================================================== */

.cpc-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.cpc-summary-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
}

.cpc-summary-card h3 {
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.cpc-result-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111827;
}

/* ==========================================================================
   PROGRESS BAR
   ========================================================================== */

.cpc-progress-section {
    margin-bottom: 2rem;
}

.cpc-progress-bar {
    height: 1.5rem;
    background-color: #e5e7eb;
    border-radius: 0.75rem;
    overflow: hidden;
    display: flex;
    margin-bottom: 0.5rem;
}

.cpc-progress-segment {
    height: 100%;
    transition: width 0.5s ease;
}

.cpc-progress-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: #6b7280;
}

/* ==========================================================================
   CHARTS
   ========================================================================== */

.cpc-charts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.cpc-chart-container {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1rem;
}

.cpc-chart-container canvas {
    width: 100% !important;
    height: 300px !important;
}

/* ==========================================================================
   DETAILED BREAKDOWN
   ========================================================================== */

.cpc-details-section {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.cpc-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.cpc-detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.cpc-detail-item span:first-child {
    font-size: 0.875rem;
    color: #6b7280;
}

.cpc-detail-item span:last-child {
    font-weight: 600;
    color: #111827;
}

/* ==========================================================================
   TIMELINE TABLE
   ========================================================================== */

.cpc-timeline-section {
    margin-bottom: 2rem;
}

.cpc-table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.cpc-timeline-table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.cpc-timeline-table th {
    background-color: #f9fafb;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: #374151;
    border-bottom: 2px solid #e5e7eb;
}

.cpc-timeline-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.cpc-timeline-table tr:hover {
    background-color: #f9fafb;
}

/* ==========================================================================
   ACTION BUTTONS
   ========================================================================== */

.cpc-action-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

/* ==========================================================================
   ERROR HANDLING
   ========================================================================== */

.cpc-error-message {
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 0.25rem;
    min-height: 1rem;
}

.cpc-error-container {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    display: none;
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .cpc-container {
        background: white;
        padding: 0;
    }
    
    .cpc-btn,
    .cpc-toggle-advanced,
    .cpc-action-buttons {
        display: none !important;
    }
    
    .cpc-card,
    .cpc-summary-card,
    .cpc-chart-container,
    .cpc-details-section {
        border: 1px solid #000;
        break-inside: avoid;
    }
    
    .cpc-timeline-table {
        min-width: auto;
    }
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */

/* Small Mobile: ≤ 360px */
@media (max-width: 360px) {
    .cpc-container {
        padding: 0.5rem;
    }
    
    .cpc-card {
        padding: 1rem;
    }
    
    .cpc-summary-grid {
        grid-template-columns: 1fr;
    }
    
    .cpc-details-grid {
        grid-template-columns: 1fr;
    }
    
    .cpc-action-buttons {
        grid-template-columns: 1fr;
    }
}

/* Mobile: ≤ 480px */
@media (min-width: 361px) and (max-width: 480px) {
    .cpc-summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet: 481px - 768px */
@media (min-width: 481px) {
    .cpc-container {
        padding: 1rem;
        max-width: 768px;
        margin: 0 auto;
    }
    
    .cpc-button-group {
        flex-direction: row;
    }
    
    .cpc-btn {
        width: auto;
        margin-bottom: 0;
    }
    
    .cpc-advanced-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop: > 768px */
@media (min-width: 769px) {
    .cpc-container {
        max-width: 1024px;
        padding: 2rem;
    }
    
    .cpc-form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cpc-summary-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .cpc-charts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cpc-details-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cpc-action-buttons {
        grid-template-columns: repeat(2, auto);
        justify-content: flex-start;
        gap: 1rem;
    }
}

/* Large Desktop: > 1200px */
@media (min-width: 1200px) {
    .cpc-container {
        max-width: 1200px;
    }
    
    .cpc-details-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

.cpc-input:focus-visible,
.cpc-btn:focus-visible,
.cpc-toggle-advanced:focus-visible {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .cpc-results-section,
    .cpc-advanced-options,
    .cpc-progress-segment,
    .cpc-loading-spinner,
    .cpc-toggle-icon {
        animation: none !important;
        transition: none !important;
    }
}

/* Screen reader only */
.cpc-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}