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

:root {
    --primary-color: #ff6b35;
    --secondary-color: #004e89;
    --dark-bg: #0a0e27;
    --dark-card: #151b3d;
    --dark-text: #e0e0e0;
    --light-text: #ffffff;
    --accent: #00d4ff;
    --success: #4caf50;
    --warning: #ff9800;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1f3a 100%);
    color: var(--dark-text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--light-text);
}

.logo-img {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    transition: all 0.3s;
}

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--light-text);
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--dark-text);
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--primary-color), #ff8c5a);
    color: var(--light-text);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    margin: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
    border: 2px solid var(--primary-color);
    cursor: pointer;
    font-size: 1rem;
    margin: 0.5rem;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--light-text);
}

/* Features Section */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--light-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--dark-card);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Calculator Section */
.calculator-section,
.progress-section {
    padding: 80px 0;
    background: rgba(21, 27, 61, 0.5);
}

.calculator-section h2,
.progress-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--light-text);
}

.calculator-box,
.progress-box {
    background: var(--dark-card);
    padding: 2rem;
    border-radius: 10px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.calc-form,
.progress-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--primary-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px;
    background: var(--dark-bg);
    border: 1px solid rgba(255, 107, 53, 0.3);
    border-radius: 5px;
    color: var(--light-text);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(255, 107, 53, 0.3);
}

.calc-result {
    background: var(--dark-bg);
    padding: 2rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 2px solid var(--primary-color);
}

.calc-result h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.calc-result .calorie-value {
    font-size: 3rem;
    color: var(--accent);
    font-weight: bold;
    margin: 1rem 0;
}

.calc-result .calorie-info {
    color: var(--dark-text);
    line-height: 1.8;
}

/* Progress Section */
.progress-chart {
    background: var(--dark-bg);
    padding: 2rem;
    border-radius: 10px;
    border: 2px solid var(--primary-color);
}

#progressCanvas {
    width: 100%;
    height: 300px;
}

/* Page Header */
.page-header {
    padding: 80px 0 40px;
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
}

.page-header h1 {
    font-size: 3rem;
    color: var(--light-text);
    margin-bottom: 1rem;
}

/* Programs */
.programs {
    padding: 60px 0;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.program-card {
    background: var(--dark-card);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.program-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.program-content {
    padding: 1.5rem;
}

.program-level {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 1rem;
}

.program-features {
    list-style: none;
    margin-top: 1rem;
}

.program-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
}

.program-features li:before {
    content: "✓ ";
    color: var(--success);
    font-weight: bold;
}

/* Nutrition */
.nutrition-content {
    padding: 60px 0;
}

.nutrition-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.nutrition-card {
    background: var(--dark-card);
    border-radius: 10px;
    overflow: hidden;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
    transition: all 0.4s ease;
    position: relative;
}

.nutrition-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(0, 212, 255, 0.1));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.nutrition-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(255, 107, 53, 0.4);
    border-color: var(--primary-color);
}

.nutrition-card:hover::before {
    opacity: 1;
}

.nutrition-card:hover .nutrition-image {
    transform: scale(1.1);
}

.nutrition-card > * {
    position: relative;
    z-index: 1;
}

.nutrition-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.nutrition-content-text {
    padding: 2rem;
}

.nutrition-content-text ul {
    margin-top: 1rem;
    padding-left: 1.5rem;
}

.nutrition-content-text li {
    margin: 0.5rem 0;
}

.nutrition-tips {
    background: var(--dark-card);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.tip-item {
    padding: 1.5rem;
    background: var(--dark-bg);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.tip-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(255, 107, 53, 0.3);
    background: var(--dark-card);
}

/* Videos */
.videos {
    padding: 60px 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.video-card {
    background: var(--dark-card);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.exercise-image-container {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.exercise-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.video-card:hover .exercise-image-container img {
    transform: scale(1.1);
}

.video-info {
    padding: 1.5rem;
}

.video-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

.video-info p {
    color: var(--dark-text);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.exercise-details {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 107, 53, 0.2);
}

.exercise-detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-size: 0.9rem;
}

.exercise-detail-item::before {
    content: "•";
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* FAQ */
.faq {
    padding: 60px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--dark-card);
    border-radius: 10px;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(255, 107, 53, 0.1);
}

.faq-question h3 {
    color: var(--light-text);
    font-size: 1.1rem;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--dark-text);
    line-height: 1.8;
}

/* Contact */
.contact {
    padding: 60px 0;
}

.contact-info {
    max-width: 900px;
    margin: 0 auto;
}

.contact-info h2 {
    color: var(--light-text);
    margin-bottom: 2rem;
    text-align: center;
}

.contact-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-item {
    padding: 1.5rem;
    background: var(--dark-card);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(255, 107, 53, 0.3);
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Privacy */
.privacy-content {
    padding: 60px 0;
}

.privacy-text {
    background: var(--dark-card);
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.privacy-text h2 {
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.privacy-text h3 {
    color: var(--accent);
    margin: 1.5rem 0 1rem;
}

.privacy-text ul {
    margin: 1rem 0;
    padding-left: 2rem;
}

.privacy-text li {
    margin: 0.5rem 0;
}

.privacy-form-section {
    background: var(--dark-card);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.privacy-form-section h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.privacy-form {
    margin-top: 2rem;
}

.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin: 1rem 0;
}

.form-group-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.form-group-checkbox label {
    color: var(--dark-text);
    font-size: 0.9rem;
    line-height: 1.5;
    cursor: pointer;
}

/* About Page */
.about-content {
    padding: 60px 0;
}

.about-section {
    background: var(--dark-card);
    padding: 2.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.about-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.about-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.value-item {
    padding: 1.5rem;
    background: var(--dark-bg);
    border-radius: 8px;
    border-left: 4px solid var(--accent);
    transition: all 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
}

.value-item h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.why-list {
    list-style: none;
    padding-left: 0;
    margin-top: 1.5rem;
}

.why-list li {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: var(--dark-bg);
    border-radius: 5px;
    border-left: 3px solid var(--primary-color);
    transition: all 0.3s ease;
}

.why-list li:hover {
    transform: translateX(10px);
    background: var(--dark-card);
}

.why-list li::before {
    content: "→ ";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Footer */
footer {
    background: var(--dark-bg);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(255, 107, 53, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin: 0.5rem 0;
}

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

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 107, 53, 0.1);
    color: var(--dark-text);
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 2rem;
        transition: left 0.3s;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    }

    .nav-menu.active {
        left: 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .calculator-box,
    .progress-box {
        grid-template-columns: 1fr;
    }

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

    .nutrition-image {
        height: 200px;
    }

    .contact-items-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .btn-primary,
    .btn-secondary {
        margin: 0.25rem;
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .calc-form,
    .progress-form {
        gap: 1.5rem;
    }

    .calculator-box,
    .progress-box {
        padding: 1.5rem;
        gap: 1.5rem;
    }

    .about-section {
        padding: 1.5rem;
    }

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