/* ============================================
   Professional Financial Data Application
   Design System & Styles
   ============================================ */

/* CSS Variables - Design System */
:root {
    /* Primary Colors */
    --primary-blue: #1e3a8a;
    --primary-blue-light: #3b82f6;
    --primary-blue-dark: #1e40af;
    
    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    min-height: 100vh;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue-dark);
}

/* Layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    gap: var(--spacing-md);
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: white;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
    white-space: nowrap;
}

header .logo-icon {
    font-size: 2rem;
}

.header-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: nowrap;
    white-space: nowrap;
}

.header-nav a {
    color: white;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.header-nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.header-nav form {
    display: inline;
    margin: 0;
}

.header-nav button[type="submit"] {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    font-family: var(--font-sans);
    font-size: 1rem;
}

.header-nav button[type="submit"]:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hamburger Menu Button */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-menu span {
    width: 2rem;
    height: 0.25rem;
    background: white;
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

.hamburger-menu.active span:first-child {
    transform: rotate(45deg);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* Main Content */
main {
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - 200px);
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    border-bottom: 2px solid var(--gray-200);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-header h2 {
    margin: 0;
    color: var(--primary-blue);
    font-size: 1.5rem;
}

.card-body {
    padding: 0;
}

.card-body h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--primary-blue);
    font-size: 1.25rem;
}

.card-body h3:first-child {
    margin-top: 0;
}

.card-body ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.card-body ul li {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

/* Search Container */
.search-container {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.search-container h2 {
    margin-bottom: var(--spacing-xl);
    color: #000000;
    border-bottom: 3px solid var(--primary-blue-light);
    padding-bottom: var(--spacing-md);
    font-size: 2rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Forms */
.search-form {
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: #000000;
    font-size: 0.95rem;
}

.form-group label .calendar-icon {
    margin-right: var(--spacing-sm);
    font-size: 1.2em;
    cursor: pointer;
    display: inline-block;
    transition: transform var(--transition-fast);
}

.form-group label .calendar-icon:hover {
    transform: scale(1.15);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: all var(--transition-base);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-control:hover {
    border-color: var(--gray-400);
}

/* ChatGPT-style Strategy Description */
.strategy-description {
    font-family: var(--font-sans);
    line-height: 1.6;
    resize: vertical;
    min-height: 150px;
    padding: 1rem 1.25rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: white;
    transition: all var(--transition-base);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.strategy-description:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1), 0 4px 6px rgba(0, 0, 0, 0.1);
    background: #fafbfc;
}

.strategy-description::placeholder {
    color: var(--gray-400);
    font-style: italic;
    line-height: 1.8;
}

.strategy-description:hover {
    border-color: var(--gray-400);
}

/* Strategy Summary Table */
.strategy-summary-table {
    width: 100%;
    border-collapse: collapse;
}

.strategy-summary-table .summary-row {
    border-bottom: 1px solid var(--gray-200);
    transition: background-color var(--transition-fast);
}

.strategy-summary-table .summary-row:hover {
    background-color: var(--gray-50);
}

.strategy-summary-table .summary-key {
    padding: 0.875rem 1rem;
    font-weight: 600;
    color: var(--gray-700);
    width: 35%;
    vertical-align: middle;
}

.strategy-summary-table .summary-value {
    padding: 0.875rem 1rem;
    color: var(--gray-900);
    width: 55%;
    vertical-align: middle;
}

.strategy-summary-table .summary-value .value-display {
    display: inline-block;
}

.strategy-summary-table .summary-value .value-edit {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--primary-blue);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
}

.strategy-summary-table .summary-actions {
    padding: 0.875rem 1rem;
    width: 10%;
    text-align: right;
    vertical-align: middle;
}

.strategy-summary-table .edit-btn {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.strategy-summary-table .edit-btn:hover {
    background: var(--gray-100);
    color: var(--primary-blue);
}

/* Date Picker Styles */
.date-picker {
    position: relative;
    cursor: pointer;
}

.date-picker::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 1;
    padding: 0.25rem;
    transition: opacity var(--transition-fast);
}

.date-picker::-webkit-calendar-picker-indicator:hover {
    opacity: 0.8;
}

/* Make the entire date input clickable */
.date-picker {
    cursor: pointer;
}

input[type="date"]::-webkit-inner-spin-button,
input[type="date"]::-webkit-clear-button {
    display: none;
    -webkit-appearance: none;
}


/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    text-decoration: none;
    font-family: var(--font-sans);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-blue-dark) 0%, var(--primary-blue) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

/* Messages */
.text-danger {
    color: var(--danger);
    font-size: 0.9rem;
    display: block;
    margin-top: var(--spacing-xs);
    font-weight: 500;
}

.form-text {
    font-size: 0.85rem;
    color: #000000;
    margin-top: var(--spacing-xs);
    display: block;
}

.error-message {
    background: var(--danger-light);
    border: 2px solid var(--danger);
    color: var(--danger);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.info-message {
    background: var(--info-light);
    border: 2px solid var(--info);
    color: var(--primary-blue-dark);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.warning-message {
    background: #fef3c7;
    border: 2px solid var(--warning);
    color: #92400e;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

/* Results Container */
.results-container {
    margin-top: var(--spacing-2xl);
}

.results-container h3 {
    margin-bottom: var(--spacing-lg);
    color: #000000;
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Data Table */
.results-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.results-table thead {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: white;
}

.results-table th,
.results-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.results-table th {
    font-weight: 600;
    user-select: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.results-table th.sortable {
    cursor: pointer;
    position: relative;
    transition: background-color var(--transition-fast);
}

.results-table th.sortable:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.results-table th .sort-indicator {
    font-size: 0.8em;
    margin-left: var(--spacing-sm);
    display: inline-block;
    opacity: 0.7;
}

.results-table th.sortable .sort-indicator {
    opacity: 1;
}

.results-table tbody tr {
    transition: background-color var(--transition-fast);
}

.results-table tbody tr:hover {
    background-color: var(--gray-50);
}

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

.results-table td.gain {
    color: var(--success);
    font-weight: 600;
}

.results-table td.loss {
    color: var(--danger);
    font-weight: 600;
}

.results-table td .no-change {
    color: var(--gray-400);
    font-weight: normal;
}

/* Loading States */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Footer */
footer {
    background: linear-gradient(135deg, #e8f0f8 0%, #d6e4f0 100%);
    color: #000000;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: #000000;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: #000000;
}

.footer-section a {
    color: #000000;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid var(--gray-400);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: #000000;
    font-size: 0.9rem;
}

.disclaimer-text {
    font-size: 0.85rem;
    line-height: 1.6;
    color: #000000;
    margin-top: var(--spacing-md);
}

.disclaimer-text strong {
    color: #dc2626; /* Red for IMPORTANT */
    font-weight: 700;
}

/* Responsive Design */
@media (max-width: 1024px) and (min-width: 769px) {
    header h1 span:last-child {
        display: none; /* Hide tagline on medium screens to save space */
    }
    
    .header-nav {
        gap: var(--spacing-sm);
    }
    
    .header-nav a,
    .header-nav button {
        font-size: 0.9rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    header h1 {
        font-size: 1.25rem;
    }
    
    header h1 span:last-child {
        display: none; /* Hide tagline on mobile */
    }
    
    .header-content {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        flex-wrap: nowrap;
    }
    
    /* Show hamburger menu on mobile */
    .hamburger-menu {
        display: flex;
    }
    
    /* Hide regular nav by default on mobile */
    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
        flex-direction: column;
        align-items: flex-start;
        padding: 4rem var(--spacing-lg) var(--spacing-lg);
        gap: var(--spacing-md);
        transition: right 0.3s ease-in-out;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.3);
        z-index: 1000;
        overflow-y: auto;
    }
    
    /* Show menu when open */
    .header-nav.mobile-menu-open {
        right: 0;
    }
    
    .header-nav a {
        font-size: 1rem;
        padding: var(--spacing-md);
        width: 100%;
        border-radius: var(--radius-md);
        white-space: normal;
        display: block;
    }
    
    .header-nav a:hover {
        background-color: rgba(255, 255, 255, 0.15);
    }
    
    .header-nav button {
        font-size: 1rem;
        padding: var(--spacing-md);
        width: 100%;
        text-align: left;
        white-space: normal;
        border-radius: var(--radius-md);
    }
    
    .header-nav button:hover {
        background-color: rgba(255, 255, 255, 0.15);
    }
    
    .header-nav span {
        font-size: 0.9rem;
        padding: var(--spacing-md);
        white-space: normal;
        display: block;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        margin-bottom: var(--spacing-sm);
    }
    
    .header-nav form {
        width: 100%;
        display: block;
    }
    
    
    .search-container {
        padding: var(--spacing-lg);
    }
    
    .search-container h2 {
        font-size: 1.5rem;
    }
    
    .results-table {
        font-size: 0.85rem;
        display: block;
        overflow-x: auto;
    }
    
    .results-table th,
    .results-table td {
        padding: var(--spacing-sm);
        white-space: nowrap;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    header h1 {
        font-size: 1.1rem;
    }
    
    .header-nav {
        gap: 0.2rem;
        row-gap: 0.4rem;
    }
    
    .header-nav a {
        font-size: 0.7rem;
        padding: 0.3rem 0.4rem;
    }
    
    .header-nav button {
        font-size: 0.7rem;
        padding: 0.3rem 0.4rem;
    }
    
    .header-nav span {
        font-size: 0.65rem;
        padding: 0.3rem 0.2rem;
    }
    
    /* Hide "Hello, [Name]" on very small screens to save space */
    .header-nav .user-greeting {
        display: none;
    }
    
    .btn {
        width: 100%;
        padding: 1rem;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 700px;
    box-shadow: var(--shadow-xl);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header h2 {
    margin: 0;
    color: white;
}

.modal-body {
    padding: var(--spacing-xl);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Print Styles */
@media print {
    header, footer, .btn, .search-form {
        display: none;
    }
    
    .results-table {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
}

/* Column Filter Styles */
.column-filter {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border: 1px solid #ddd;
    border-radius: 0.25rem;
    background-color: white;
    transition: border-color 0.2s;
    font-family: var(--font-sans);
}

.column-filter:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.1);
}

.column-filter::placeholder {
    color: #999;
    font-size: 0.7rem;
}

/* Filterable column header styling */
th.filterable {
    position: relative;
}