:root {
    --primary-color: #007BFF;
    --primary-hover-color: #0056b3;
    --background-color: #f8f9fa;
    --card-background-color: #ffffff;
    --text-color: #333;
    --light-text-color: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 4px 8px rgba(0,0,0,0.1);
    --border-radius: 8px;
    --gold-color: #B8860B; /* Dark Golden Rod */
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--card-background-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.title-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(145deg, #ffd700, #b8860b);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
    overflow: hidden;
}

header h1::after, .subtitle::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: shimmer 2.5s infinite linear;
    transform: translateX(-100%);
}

.subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    margin-top: 0;
    background: linear-gradient(145deg, #ffd700, #b8860b);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
    overflow: hidden;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    gap: 2.5rem;
    margin-top: 1rem;
}

nav a {
    text-decoration: none;
    color: var(--light-text-color);
    font-weight: 600;
    padding: 0.5rem 0;
    transition: color 0.3s ease, border-color 0.3s ease;
    border-bottom: 2px solid transparent;
}

nav a:hover, nav a.active {
    color: var(--gold-color);
    border-bottom-color: var(--gold-color);
}

.login-btn {
    background-color: var(--gold-color);
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    border-bottom: none;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, background-color 0.3s ease;
}
.login-btn:hover {
    background-color: #DAA520;
    color: white;
    border-bottom: none;
    transform: scale(1.1);
}

.login-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2.5s infinite linear;
    transform: translateX(-100%);
}

.logout-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#inactivity-timer {
    font-size: 0.9rem;
    color: var(--light-text-color);
    font-weight: 600;
    min-width: 150px; /* Prevent layout shift */
}


.tradingview-widget-container {
    margin-bottom: 1.5rem;
}

.content-section {
    padding: 4rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.intro {
    text-align: center;
    padding-top: 0;
}

.intro .disclaimer {
    font-size: 0.95rem;
    color: #721c24;
    background-color: #fff5f5;
    border: 3px solid #f5c2c7;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
    font-style: normal;
}

/* Alternating background colors for content sections */
main > .content-section:nth-of-type(even) {
    background-color: var(--card-background-color);
}
/* Override for odd-numbered sections that are also styled as text-cards */
main > .content-section:nth-of-type(odd).text-card {
    background-color: var(--background-color);
    box-shadow: none;
}

.stock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.stock-card, .text-card {
    background-color: var(--card-background-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

.stock-card {
    display: flex;
    flex-direction: column;
    /* align-items: center; */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.text-card h2 {
    font-size: 1.8rem;
    color: var(--gold-color);
    margin-bottom: 1rem;
    text-align: center;
}

.stock-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
}

.purchase-banner {
    position: absolute;
    top: 0;
    left: 0;
    background-color: #DAA520;
    color: white;
    padding: 0.3rem 0.8rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-top-left-radius: var(--border-radius);
    border-bottom-right-radius: 12px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.stock-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.stock-card-content.blurred {
    filter: blur(5px);
    pointer-events: none;
    user-select: none;
    transition: filter 0.5s ease;
}


.stock-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(145deg, #D4AF37, #C09526);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
    overflow: hidden;
    align-self: center;
    margin-top: 2rem;
    z-index: 1;
}

.stock-card h2::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: shimmer 2.5s infinite linear;
    transform: translateX(-100%);
}

.tradingview-chart-container {
    width: 100%;
    height: 300px;
    margin-bottom: 1.5rem;
    position: relative;
}

.button-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    position: relative;
}

.fetch-button, .fair-value-button {
    background-color: #DAA520;
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: background-color 0.3s, transform 0.2s, width 0.4s ease-in-out;
    width: 70%;
    position: relative;
    overflow: hidden;
}

.fair-value-button {
    margin-top: 0.75rem;
}


.fetch-button:hover:not(:disabled), .fetch-button:focus:not(:disabled),
.fair-value-button:hover:not(:disabled), .fair-value-button:focus:not(:disabled) {
    background-color: #B8860B;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.25);
    width: 80%;
}

.fetch-button:hover:not(:disabled)::after, .fetch-button:focus:not(:disabled)::after,
.fair-value-button:hover:not(:disabled)::after, .fair-value-button:focus:not(:disabled)::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2.5s infinite linear;
    transform: translateX(-100%);
}

.fetch-button:disabled, .fair-value-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    pointer-events: none; /* Important for wrapper tooltip */
}

.data-container, .fair-value-container {
    width: 100%;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.8;
    text-align: left;
}

.data-container:not(:empty), .fair-value-container:not(:empty) {
    min-height: 100px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: #fdfdfd;
}

.data-container h4, .fair-value-container h4 {
    color: var(--gold-color);
    margin-top: 1.25rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid #e0cda8;
    font-weight: 600;
    font-size: 1rem;
}

.data-container h4:first-of-type, .fair-value-container h4:first-of-type {
    margin-top: 0;
}

.data-container p, .fair-value-container p {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.3rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.data-container p:last-of-type, .fair-value-container p:last-of-type {
    border-bottom: none;
}

.data-container p.summary, .fair-value-container p.summary, 
.fair-value-container p.assumptions, .fair-value-container p.assessment {
    display: block;
    border-bottom: none;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.data-container p span, .fair-value-container p span {
    color: var(--light-text-color);
}

.data-container p strong, .fair-value-container p strong {
    color: var(--text-color);
    font-weight: 600;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--gold-color);
    animation: spin 1s ease infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.error-message {
    color: #721c24;
    background-color: #f8d7da;
    padding: 0.8rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid #f5c6cb;
}

/* --- Tooltip Styles --- */
[data-tooltip] {
    position: relative;
    cursor: help;
}
[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background-color: #333;
    color: #fff;
    padding: 0.5rem 0.8rem;
    border-radius: 5px;
    font-size: 0.85rem;
    white-space: pre-wrap;
    width: 300px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    pointer-events: none;
    z-index: 1000;
}
[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}


/* --- Auth Tooltip (for disabled buttons) --- */
[data-tooltip-auth] {
    position: relative;
    cursor: not-allowed;
}
[data-tooltip-auth]::after {
    content: attr(data-tooltip-auth);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 5px;
    background-color: var(--gold-color);
    color: #fff;
    padding: 0.5rem 0.8rem;
    border-radius: 5px;
    font-size: 0.9rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    pointer-events: none;
    z-index: 1001;
}
[data-tooltip-auth]:hover::after {
    opacity: 1;
    visibility: visible;
}


/* --- Login Modal Styles --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.login-modal {
    background-color: var(--card-background-color);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 400px;
    position: relative;
}

.close-modal-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--light-text-color);
}

.login-modal h2 {
    text-align: center;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.login-modal p {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--light-text-color);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}

.modal-login-btn {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--gold-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.modal-login-btn:hover {
    background-color: #DAA520;
}


/* --- Fair Value Specific Styles --- */
.fair-value-container .model-section {
    padding: 1rem;
    margin-top: 1rem;
    border: 1px solid #f0f0f0;
    border-radius: var(--border-radius);
}

.fair-value-container h5 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gold-color);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #f0f0f0;
}

.fair-value-container p.assumptions {
    font-style: italic;
    color: #555;
    font-size: 0.85rem;
}
.fair-value-container p.assumptions strong {
    font-style: normal;
}

.fair-value-container .final-assessment {
    margin-top: 1.5rem;
    padding: 1rem;
    border: 2px solid var(--gold-color);
    border-radius: var(--border-radius);
    background-color: #fffaf0;
}
.fair-value-container .final-assessment h5 {
    border: none;
    padding: 0;
    margin-bottom: 0.5rem;
}
.fair-value-container .final-assessment p {
    border: none;
    padding: 0;
    display: block;
}


footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    background-color: var(--card-background-color);
    border-top: 1px solid var(--border-color);
    color: var(--light-text-color);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    header {
        padding: 1.5rem 1rem;
    }
    header h1 {
        font-size: 2rem;
    }
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    .content-section {
        padding: 2rem 1rem;
    }
    .stock-grid {
        grid-template-columns: 1fr;
    }
}