:root {
    --teal: #00a99d;
    --dark-teal: #007f78;
    --light-teal: #e7f8f6;
    --black: #111111;
    --dark: #1a1a1a;
    --grey: #666666;
    --light-grey: #f4f6f6;
    --border: #dddddd;
    --white: #ffffff;
    --danger: #c0392b;
    --success: #16803c;
    --shadow: 0 8px 25px rgba(0,0,0,0.08);
}

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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: var(--light-grey);
    color: var(--black);
    line-height: 1.6;
}

a {
    color: var(--teal);
}

.container {
    width: 88%;
    max-width: 1250px;
    margin: auto;
}

/* NAVIGATION */

.navbar {
    background: var(--black);
    color: var(--white);
    min-height: 72px;
    padding: 0 6%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    color: white;
    text-decoration: none;
    font-size: 24px;
    font-weight: bold;
}

.logo span {
    color: var(--teal);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 5px;
    list-style: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 5px;
    transition: 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--teal);
}

.nav-button {
    background: var(--teal);
}

.menu-toggle {
    display: none;
    background: none;
    border: 0;
    color: white;
    font-size: 28px;
    cursor: pointer;
}

/* HERO */

.hero {
    background: var(--black);
    color: white;
    padding: 110px 0;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 58px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--teal);
}

.hero p {
    color: #ddd;
    font-size: 19px;
    max-width: 700px;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* GENERAL */

.page-section {
    padding: 65px 0;
}

.page-title {
    text-align: center;
    margin-bottom: 45px;
}

.page-title h1 {
    font-size: 40px;
    margin-bottom: 10px;
}

.page-title p {
    color: var(--grey);
    max-width: 700px;
    margin: auto;
}

.text-teal {
    color: var(--teal);
}

.small-heading {
    color: var(--teal);
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 2px;
}

/* BUTTONS */

.btn {
    display: inline-block;
    padding: 12px 22px;
    border: 0;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    font-size: 15px;
    transition: 0.2s;
}

.btn-primary {
    background: var(--teal);
    color: white;
}

.btn-primary:hover {
    background: var(--dark-teal);
}

.btn-dark {
    background: var(--black);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--teal);
    color: var(--teal);
}

.btn-outline:hover {
    background: var(--teal);
    color: white;
}

.btn-full {
    width: 100%;
}

/* CARDS */

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--teal);
}

.card h3 {
    margin-bottom: 12px;
}

.card p {
    color: var(--grey);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light-teal);
    color: var(--teal);
    font-size: 22px;
    font-weight: bold;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* DARK SECTION */

.section-dark {
    background: var(--black);
    color: white;
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.two-column p {
    color: #ccc;
}

.feature-list {
    display: grid;
    gap: 12px;
}

.feature-list div {
    background: #1d1d1d;
    border: 1px solid #333;
    padding: 18px;
    display: flex;
    gap: 20px;
    align-items: center;
    border-radius: 5px;
}

.feature-list strong {
    color: var(--teal);
}

/* FORMS */

.form-container {
    width: 100%;
    max-width: 620px;
    margin: 20px auto;
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.form-heading {
    margin-bottom: 30px;
}

.form-heading h1 {
    margin: 5px 0 10px;
}

.form-heading p,
.muted {
    color: var(--grey);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 7px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px;
    border: 1px solid var(--border);
    border-radius: 5px;
    background: white;
    font-size: 15px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--teal);
}

.form-footer {
    margin-top: 25px;
    text-align: center;
    color: var(--grey);
}

#loginMessage,
#registerMessage {
    margin-top: 15px;
}

/* CALCULATORS */

.calculator-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 50px;
}

.calculator-card {
    background: white;
    padding: 35px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.result-box {
    background: var(--light-teal);
    border-left: 5px solid var(--teal);
    padding: 25px;
    border-radius: 5px;
}

.result-box h3 {
    color: var(--dark-teal);
    margin-bottom: 12px;
}

.error-message {
    background: #fdecea;
    color: var(--danger);
    padding: 13px;
    border-radius: 5px;
}

.success-message {
    background: #e9f7ef;
    color: var(--success);
    padding: 13px;
    border-radius: 5px;
}

/* DASHBOARD */

.dashboard-header {
    margin-bottom: 35px;
}

.dashboard-header h1 {
    font-size: 36px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.stat-card h4 {
    color: var(--grey);
    margin-bottom: 8px;
}

.stat-card .value {
    color: var(--teal);
    font-size: 28px;
    font-weight: bold;
}

.dashboard-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 25px;
}

.dashboard-panel {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.quick-links {
    display: grid;
    gap: 12px;
}

.quick-link {
    display: flex;
    flex-direction: column;
    padding: 18px;
    background: var(--light-teal);
    border-radius: 5px;
    text-decoration: none;
    color: var(--black);
}

.quick-link strong {
    color: var(--dark-teal);
}

.quick-link span {
    color: var(--grey);
    font-size: 14px;
}

/* INVESTMENTS */

.plan-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.plan-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.plan-card.featured {
    border: 2px solid var(--teal);
}

.plan-return {
    color: var(--teal);
    font-size: 25px;
    font-weight: bold;
}

.plan-card ul {
    list-style: none;
    margin-top: 20px;
}

.plan-card li {
    padding: 9px 0;
    border-bottom: 1px solid #eee;
}

/* TABLES */

.table-container {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: var(--black);
    color: white;
}

.data-table tr:hover {
    background: var(--light-teal);
}

/* BADGES */

.badge {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.badge-teal {
    background: var(--light-teal);
    color: var(--dark-teal);
}

.badge-success {
    background: #e9f7ef;
    color: var(--success);
}

/* PROFILE */

.profile-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* FOOTER */

footer {
    background: var(--black);
    color: white;
    padding: 40px 0;
    margin-top: 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
}

.footer-grid h3 {
    margin-bottom: 15px;
}

.footer-grid p,
.footer-grid li {
    color: #aaa;
}

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

.footer-grid li {
    margin-bottom: 8px;
}

.footer-grid a {
    color: #aaa;
    text-decoration: none;
}

.footer-grid a:hover {
    color: var(--teal);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    margin-top: 30px;
    text-align: center;
    color: #888;
}

/* RESPONSIVE */

@media (max-width: 1000px) {

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--black);
        flex-direction: column;
        padding: 20px;
    }

    .nav-links.show {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .card-grid,
    .plan-grid {
        grid-template-columns: 1fr 1fr;
    }

    .dashboard-grid {
        grid-template-columns: 1fr 1fr;
    }

    .dashboard-content,
    .calculator-layout {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 650px) {

    .container {
        width: 92%;
    }

    .hero {
        padding: 75px 0;
    }

    .hero h1 {
        font-size: 40px;
    }

    .card-grid,
    .plan-grid,
    .dashboard-grid,
    .two-column {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 25px;
    }

    .page-title h1 {
        font-size: 30px;
    }
}