/* --- Global Styles & Light Mode (Default) --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #2a6fdb;
    --secondary-color: #1e90ff;
    --bg-color: #f4f8fc;
    --card-bg-color: #ffffff;
    --text-color: #343a40;
    --label-color: #495057;
    --border-color: #e9ecef;
    --success-color: #20c997;
    --light-gray: #f8f9fa;
    --hero-bg-color: #0d2447;
}

/* --- Dark Mode Variables --- */
body.dark-mode {
    --primary-color: #589bff;
    --secondary-color: #3a9cff;
    --bg-color: #121212;
    --card-bg-color: #1e1e1e;
    --text-color: #e0e0e0;
    --label-color: #a8b3cf;
    --border-color: #333;
    --light-gray: #2c2c2c;
    --hero-bg-color: #000000;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

main { flex: 1; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1rem; }
.card { background: var(--card-bg-color); padding: 2.5rem; border-radius: 16px; box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05); border: 1px solid var(--border-color); transition: background-color 0.3s, border-color 0.3s; }

/* --- Header & Navigation --- */
.site-header { background-color: var(--card-bg-color); box-shadow: 0 2px 10px rgba(0,0,0,0.05); padding: 1rem 0; position: sticky; top: 0; z-index: 1000; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo a { font-size: 1.5rem; font-weight: 700; color: var(--primary-color); text-decoration: none; }
.main-nav ul { list-style: none; display: flex; gap: 2rem; align-items: center; }
.main-nav a { text-decoration: none; color: var(--label-color); font-weight: 500; padding: 0.5rem 0; position: relative; transition: color 0.3s ease; }
.main-nav a:hover { color: var(--primary-color); }
.main-nav a.active { color: var(--primary-color); font-weight: 600; }
.main-nav a.active::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 100%; height: 3px; background-color: var(--primary-color); border-radius: 2px; }
.main-nav a.nav-disabled { color: #a0a0a0; cursor: not-allowed; }
.main-nav a.nav-disabled:hover { color: #a0a0a0; }
body.dark-mode .main-nav a.nav-disabled { color: #555; }
.main-nav a.nav-disabled::after { display: none; }
.header-actions { display: flex; align-items: center; gap: 1rem; }

/* --- Theme Switcher --- */
.theme-switcher { display: flex; align-items: center; }
.theme-toggle-checkbox { display: none; }
.theme-toggle-label {
    background-color: var(--light-gray);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px;
    position: relative;
    width: 50px;
    height: 26px;
}
.theme-toggle-label .fa-moon { color: #f1c40f; }
.theme-toggle-label .fa-sun { color: #f39c12; }
.theme-toggle-label::after {
    content: '';
    background-color: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
}
.theme-toggle-checkbox:checked + .theme-toggle-label::after { transform: translateX(24px); }
body.dark-mode .theme-toggle-label { background-color: #444; }
body.dark-mode .theme-toggle-label::after { background-color: #333; }

/* --- Mobile Menu --- */
.mobile-menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-color); }

/* --- Hero Section --- */
.hero-section { background: var(--hero-bg-color); color: white; text-align: center; padding: 6rem 1rem; }
.hero-section h1 { font-size: 3rem; margin-bottom: 1rem; line-height: 1.2; }
.hero-section p { font-size: 1.2rem; max-width: 700px; margin: 0 auto 2.5rem auto; opacity: 0.9; }

/* --- General Content & Cards --- */
.btn { padding: 0.8rem 2rem; border-radius: 8px; text-decoration: none; font-weight: 600; transition: transform 0.2s ease, box-shadow 0.2s ease; }
.btn-primary { background: var(--secondary-color); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(30, 144, 255, 0.2); }
.btn-secondary { background: var(--light-gray); color: var(--primary-color); border: 1px solid var(--border-color); }
.btn-secondary:hover { background-color: var(--border-color); }
.btn-secondary.disabled { background-color: #e9ecef; color: #6c757d; cursor: not-allowed; }
body.dark-mode .btn-secondary.disabled { background-color: #333; color: #777; }
.tools-section { padding: 5rem 0; }
.tools-section h2, .why-us-section h2, .static-page h1 { text-align: center; font-size: 2.5rem; color: var(--primary-color); margin-bottom: 1rem; }
.section-subtitle { text-align: center; color: var(--label-color); margin-bottom: 4rem; font-size: 1.1rem; }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.tool-card { background: var(--card-bg-color); border-radius: 16px; padding: 2rem; text-align: center; box-shadow: none; border: 1px solid var(--border-color); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.tool-card:hover { transform: translateY(-5px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.tool-icon { font-size: 1.8rem; color: white; margin: 0 auto 1.5rem auto; width: 60px; height: 60px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(45deg, var(--secondary-color), var(--primary-color)); }
.tool-card h3 { font-size: 1.3rem; margin-bottom: 1rem; color: var(--primary-color); }
.tool-card p { margin-bottom: 2rem; }
.tool-card.upcoming .tool-icon, .tool-card.upcoming h3 { opacity: 0.5; }
.why-us-section { background-color: var(--light-gray); padding: 5rem 1rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; text-align: center; }
.feature-item i { font-size: 2.5rem; margin-bottom: 1.5rem; }
.feature-item .fa-bullseye { color: #fd7e14; } .feature-item .fa-face-smile { color: #20c997; } .feature-item .fa-lock { color: #6f42c1; }
.feature-item h3 { font-size: 1.3rem; color: var(--primary-color); margin-bottom: 0.75rem; }
.site-footer { background-color: var(--hero-bg-color); color: white; text-align: center; padding: 2.5rem 0; margin-top: auto; }
.footer-links { margin-bottom: 1rem; } .footer-links a { color: white; text-decoration: none; margin: 0 0.75rem; opacity: 0.8; transition: opacity 0.3s; }
.footer-links a:hover { opacity: 1; }
.static-page { background: var(--card-bg-color); padding: 3rem; border-radius: 16px; max-width: 800px; margin: 2rem auto; }
.static-page h1 { text-align: left; margin-bottom: 2rem; }
.static-page h2 { font-size: 1.8rem; color: var(--primary-color); margin-top: 2.5rem; margin-bottom: 1rem; border-bottom: 2px solid var(--border-color); padding-bottom: 0.5rem; }
.contact-email a { color: var(--secondary-color); }

/* --- Tool Page & Form Styles (UPDATED) --- */
.tool-page-main { padding-top: 2rem; }
.main-container { display: flex; flex-direction: column; gap: 2rem; } /* Default is column for mobile */
.calculator-column, .content-column { display: flex; flex-direction: column; gap: 2rem; }
.card header h1 { margin: 0 0 0.5rem 0; }
.card header p { margin-bottom: 2rem; }
.form-group { margin-bottom: 2rem; }
.slider-label { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; }
#investment-display, #rate-display { color: var(--secondary-color); font-weight: 700; text-align: right; }
.slider-group { margin-top: 1rem; }

/* Styles for the input container */
.input-wrapper {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden; /* Ensures children conform to border-radius */
    transition: border-color 0.3s;
}
.input-wrapper:focus-within {
    border-color: var(--primary-color);
}
.input-wrapper .icon {
    padding: 0 12px;
    background-color: var(--light-gray);
    align-self: stretch;
    display: flex;
    align-items: center;
    border-right: 1px solid var(--border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

/* Styles for the number input */
.input-wrapper input[type="number"] {
    flex: 1; /* Allows the input to take up all available space */
    border: none;
    outline: none;
    padding: 10px 12px;
    width: 100%; /* Important for flex child */
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    background-color: var(--card-bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}
.input-wrapper input[type="number"]::-webkit-outer-spin-button,
.input-wrapper input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.input-wrapper input[type="number"] { -moz-appearance: textfield; }

/* Styles for stepper buttons */
.stepper-buttons { display: flex; }
.stepper-buttons button {
    border: none;
    background: var(--card-bg-color);
    border-left: 1px solid var(--border-color);
    padding: 8px 12px;
    cursor: pointer;
    color: var(--label-color);
    transition: background-color 0.3s;
}
.stepper-buttons button:hover { background-color: var(--light-gray); }

/* Styles for form actions and results */
.form-actions { margin-top: 2rem; display: flex; gap: 1rem; }
.btn-submit { flex: 1; }
.btn-reset { background: var(--light-gray); color: var(--label-color); border: 1px solid var(--border-color); }
.btn-reset:hover { background-color: var(--border-color); }
.results-card h2, .info-section h2 { margin-bottom: 2rem; font-size: 1.5rem; color: var(--primary-color); }
.results-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.result-item { background: var(--light-gray); border-radius: 12px; padding: 1.25rem; border-left: 5px solid var(--success-color); }
.value-block { display: flex; justify-content: space-between; align-items: center; }
.result-item .value { font-size: 1.5rem; font-weight: 600; color: var(--text-color); }
.copy-btn { background: #e2e6ea; color: var(--label-color); border: none; border-radius: 6px; width: 32px; height: 32px; cursor: pointer; }
body.dark-mode .copy-btn { background: #333; color: var(--label-color); }
.info-section li { margin-bottom: 0.75rem; list-style: none; }
.info-section .icon { color: var(--secondary-color); margin-right: 0.75rem; }
.formula-box { background: var(--light-gray); padding: 1.5rem; border-radius: 8px; text-align: center; }
.faq-item { margin-bottom: 0.5rem; }
.faq-item summary { cursor: pointer; padding: 1rem; border-radius: 8px; font-weight: 600; }
.faq-item summary:hover { background-color: var(--light-gray); }
.faq-item div { padding: 1rem; border-top: 1px solid var(--border-color); }
#notification-container { position: fixed; bottom: 20px; right: 20px; z-index: 1001; }
.toast { background-color: #2c2c2c; color: white; padding: 12px 20px; border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.2); animation: slideIn 0.5s forwards, fadeOut 0.5s 2.5s forwards; }
@keyframes slideIn { to { opacity: 1; transform: translateX(0); } }
@keyframes fadeOut { to { opacity: 0; transform: translateX(100%); } }
.radio-group{display:flex;gap:1rem;flex-wrap:wrap}.radio-label input[type=radio]{display:none}.radio-custom{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;border:1px solid var(--border-color);border-radius:8px;transition:background-color .3s,border-color .3s,color .3s;font-weight:500}.radio-label input[type=radio]:checked+.radio-custom{background-color:var(--secondary-color);color:#fff;border-color:var(--primary-color)}.radio-label:hover .radio-custom{border-color:var(--primary-color)}.info-note{font-size:.8rem;color:var(--label-color);background-color:var(--light-gray);padding:.75rem;border-radius:6px;margin-top:1rem}.info-note i{margin-right:.25rem}.checkbox-label{display:flex;align-items:center;gap:.5rem;cursor:pointer;font-weight:500}.checkbox-label input[type=checkbox]{width:1.1em;height:1.1em;cursor:pointer}.custom-select{width:100%;padding:.85rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;font-family:'Poppins',sans-serif;font-weight:600;background-color:var(--light-gray);color:var(--label-color);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=UTF8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23343a40' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right 1rem center;background-size:1em;cursor:pointer}
body.dark-mode .custom-select { background-image: url("data:image/svg+xml;charset=UTF8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e0e0e0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e"); }

/* --- Responsive Styles (UPDATED) --- */
@media (min-width: 992px) {
    /* On larger screens, use a two-column flex layout */
    .main-container {
        flex-direction: row;
        align-items: flex-start;
        gap: 2.5rem;
    }
    /* Make both columns take up equal space */
    .calculator-column,
    .content-column {
        flex: 1;
    }
    .calculator-column {
        position: sticky; /* Keeps the calculator in view while scrolling */
        top: 2rem;
    }
}

/* No change needed for 991px, it will correctly use the default column layout */

@media (max-width: 768px) {
    .hero-section h1 { font-size: 2.2rem; }
    .header-actions { position: relative; z-index: 1001; }
    .mobile-menu-toggle { display: block; }
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--card-bg-color);
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    .main-nav.active { display: block; }
    .main-nav ul { flex-direction: column; padding: 1rem 0; gap: 0; }
    .main-nav li { width: 100%; text-align: center; }
    .main-nav a { display: block; padding: 1rem; width: 100%; }
    .main-nav a.active::after { display: none; }
    .main-nav a:hover, .main-nav a.active { background-color: var(--light-gray); }
}