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

:root {
    --bg-color: #1c1c1c; /* Dark Background */
    --accent-color: #00FF7F; /* Neon Green Accent */
    --text-color: #ffffff;
    --secondary-bg: #333333;
}

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

a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent-color);
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text-color);
}

/* HEADER AND NAVIGATION */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: var(--secondary-bg);
    border-bottom: 2px solid var(--accent-color);
}

.logo {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--accent-color);
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    padding: 5px 10px;
}

.cta-btn {
    background-color: var(--accent-color);
    color: var(--bg-color) !important;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: 700;
    transition: background-color 0.3s;
}

.cta-btn:hover {
    background-color: #00cc66; /* Slightly darker green */
    color: var(--bg-color) !important;
}

/* HERO SECTION */
.hero-section {
    background: url('https://via.placeholder.com/1400x600?text=High+Energy+Fitness+Image') no-repeat center center/cover;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5); /* Dark overlay */
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: 3.5em;
    margin-bottom: 10px;
}

.hero-content p {
    font-size: 1.2em;
    margin-bottom: 25px;
}

.main-cta {
    background-color: var(--accent-color);
    color: var(--bg-color);
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1.1em;
    font-weight: 700;
    text-transform: uppercase;
    transition: transform 0.3s;
    display: inline-block;
}

.main-cta:hover {
    transform: scale(1.05);
}

/* WORKOUTS SECTION */
.workouts-section {
    padding: 80px 5%;
    text-align: center;
}

.workouts-section h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
}

.card-container {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    flex-wrap: wrap;
}

.workout-card {
    background-color: var(--secondary-bg);
    padding: 20px;
    border-radius: 10px;
    width: 30%; /* 3 cards in a row */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s;
}

.workout-card:hover {
    transform: translateY(-10px);
    border: 1px solid var(--accent-color);
}

.workout-card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 15px;
}

.workout-card h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

.card-btn {
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 15px;
    font-weight: 700;
}

/* LOGIN CONTAINER */
.login-container {
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-form-box {
    background-color: var(--secondary-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 255, 127, 0.2); /* Neon shadow */
    width: 350px;
    text-align: center;
}

.login-form-box h2 {
    color: var(--accent-color);
    margin-bottom: 25px;
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 300;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 5px;
    background-color: #444;
    color: var(--text-color);
}

.login-form-box .main-cta {
    width: 100%;
    margin-top: 10px;
}

.signup-link {
    margin-top: 20px;
    font-size: 0.9em;
}

/* FOOTER */
.footer {
    background-color: #0d0d0d;
    text-align: center;
    padding: 20px 5%;
    font-size: 0.9em;
    border-top: 1px solid #444;
}

.social-links a {
    margin: 0 10px;
}

/* RESPONSIVE DESIGN (FOR MOBILE PHONES) */
@media (max-width: 768px) {
    /* keep header horizontal and allow nav to scroll if it overflows */
    .header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 12px 3%;
        gap: 10px;
    }

    .logo {
        font-size: 1.5em;
        margin-bottom: 0;
        flex-shrink: 0;
    }

    nav {
        flex: 1 1 auto;
    }

    nav ul {
        display: flex;
        flex-direction: row;     /* force horizontal */
        align-items: center;
        gap: 10px;
        justify-content: flex-end;
        flex-wrap: nowrap;       /* prevent vertical wrap */
        overflow-x: auto;        /* allow horizontal scroll on very small devices */
        -webkit-overflow-scrolling: touch;
        padding: 6px 0;
    }

    nav ul li {
        margin-left: 0;
        white-space: nowrap;
    }

    .hero-content h1 {
        font-size: 2em;
    }

    .hero-content p {
        font-size: 1em;
    }

    .hero-section {
        height: 50vh;
    }

    .workouts-section {
        padding: 40px 3%;
    }

    .workouts-section h2 {
        font-size: 1.8em;
        margin-bottom: 30px;
    }

    .card-container {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .workout-card {
        width: 90%;
        max-width: 350px;
    }

    .login-form-box {
        width: 85%;
        max-width: 300px;
        padding: 25px;
    }

    .login-container {
        height: auto;
        padding: 30px 10px;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: row;
        padding: 10px 2%;
        gap: 8px;
        align-items: center;
    }

    .logo {
        font-size: 1.2em;
        flex-shrink: 0;
    }

    nav ul {
        display: flex;
        flex-direction: row;
        gap: 8px;
        flex-wrap: nowrap;
        justify-content: flex-end;
        overflow-x: auto;
        padding: 4px 0;
    }

    nav ul li {
        margin: 0 6px;
        white-space: nowrap;
    }

    nav ul li a {
        font-size: 0.85em;
        padding: 4px 8px;
    }

    .cta-btn {
        padding: 6px 10px;
        font-size: 0.85em;
    }

    .hero-section {
        height: 40vh;
    }

    .hero-content h1 {
        font-size: 1.5em;
        margin-bottom: 10px;
    }

    .hero-content p {
        font-size: 0.9em;
        margin-bottom: 15px;
    }

    .main-cta {
        padding: 10px 20px;
        font-size: 0.95em;
    }

    .workouts-section {
        padding: 30px 2%;
    }

    .workouts-section h2 {
        font-size: 1.5em;
        margin-bottom: 20px;
    }

    .workout-card {
        width: 100%;
        max-width: 280px;
    }

    .workout-card img {
        height: 150px;
    }

    .workout-card h3 {
        font-size: 1em;
        margin: 10px 0 8px;
    }

    .workout-card p {
        font-size: 0.85em;
    }

    .card-btn {
        padding: 8px 15px;
        font-size: 0.9em;
    }

    .login-form-box {
        width: 95%;
        padding: 20px;
    }

    .login-form-box h2 {
        font-size: 1.5em;
        margin-bottom: 15px;
    }

    .input-group input {
        padding: 8px;
        font-size: 0.9em;
    }

    .footer {
        padding: 15px 5%;
        font-size: 0.85em;
    }

    .social-links a {
        margin: 0 5px;
    }
}