/* ===================================
   3D COACHING - Professional Website
   Modern, Secure, and Scalable Design
   =================================== */

/* === CSS Variables & Design System === */
:root {
    /* Primary Colors — Bleu marine & Doré */
    --color-primary: #C9A84C;
    --color-primary-dark: #A8893A;
    --color-primary-light: #E8C97A;
    --color-secondary: #0D1B3E;
    --color-accent: #C9A84C;

    /* Neutral Colors */
    --color-dark: #0D1B3E;
    --color-dark-light: #1A2F5A;
    --color-gray: #6B7280;
    --color-light-gray: #E5E7EB;
    --color-white: #FFFFFF;
    --color-bg: #F4F6FA;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #C9A84C 0%, #E8C97A 100%);
    --gradient-secondary: linear-gradient(135deg, #0D1B3E 0%, #1A2F5A 100%);
    --gradient-accent: linear-gradient(135deg, #C9A84C 0%, #E8C97A 100%);
    --gradient-hero: linear-gradient(135deg, #0D1B3E 0%, #1A2F5A 60%, #243B6E 100%);

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;

    /* Font Sizes */
    --fs-h1: 3.5rem;
    --fs-h2: 2.5rem;
    --fs-h3: 1.75rem;
    --fs-h4: 1.25rem;
    --fs-body: 1rem;
    --fs-small: 0.875rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Z-index */
    --z-header: 1000;
    --z-modal: 2000;
}

/* === Base Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    font-size: var(--fs-body);
    color: var(--color-dark);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === Typography === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
}

h4 {
    font-size: var(--fs-h4);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Section === */
.section {
    padding: var(--spacing-xl) 0;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__title {
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__subtitle {
    font-size: var(--fs-h4);
    color: var(--color-gray);
    font-weight: 400;
}

/* === Header & Navigation === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(13, 27, 62, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-header);
    transition: var(--transition-normal);
}

.header.scroll-header {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav__logo-img {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

.nav__logo h2 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
}

.nav__list {
    display: flex;
    gap: var(--spacing-md);
}

.nav__link {
    font-weight: 500;
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 80%;
}

.nav__link:hover {
    color: var(--color-primary);
}

.nav__toggle,
.nav__close {
    display: none;
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #060E1F;
    position: relative;
    overflow: hidden;
    padding-top: 4.5rem;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}



.hero__container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero__content {
    color: var(--color-white);
}

.hero__title-main {
    display: block;
    font-size: var(--fs-h1);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease;
}

.hero__subtitle {
    display: block;
    font-size: var(--fs-h3);
    font-weight: 300;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero__description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero__image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__shape {
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: float 6s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__logo {
    width: 80%;
    height: 80%;
    object-fit: contain;
    border-radius: 50%;
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-family: var(--font-primary);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: var(--fs-body);
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-submit {
    width: 100%;
    margin-top: var(--spacing-sm);
}

/* === About Section === */
.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.about__text h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.about__text p {
    color: var(--color-dark-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about__values {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.value-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.value-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.value-card__icon i {
    display: block;
}

.value-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.value-card p {
    color: var(--color-gray);
    margin: 0;
}

/* === Services Section === */
.services {
    background: var(--color-white);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.service-card__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.service-card__icon i {
    display: block;
}

.service-card__title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.service-card__description {
    line-height: 1.7;
}

.service-card__catchphrase {
    color: var(--color-dark);
    font-weight: 600;
    font-style: italic;
    margin-bottom: var(--spacing-xs);
    display: block;
}

.service-card__list {
    list-style: none;
    padding-left: 0;
}

.service-card__list li {
    color: var(--color-gray);
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-card__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* === Contact Section === */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.contact__info h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.contact__info p {
    color: var(--color-dark-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact__item {
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
}

.contact__icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.contact__icon i {
    display: block;
}

.contact__item h4 {
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.contact__item p {
    color: var(--color-gray);
    margin: 0;
}

/* === Form Styles === */
.contact__form {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-dark);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    font-size: var(--fs-body);
    transition: var(--transition-fast);
    background: var(--color-bg);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
}

.form__input.error {
    border-color: #EF4444;
}

.form__error {
    display: block;
    color: #EF4444;
    font-size: var(--fs-small);
    margin-top: var(--spacing-xs);
}

.form__message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 500;
    display: none;
}

.form__message.success {
    background: #D1FAE5;
    color: #065F46;
    display: block;
}

.form__message.error {
    background: #FEE2E2;
    color: #991B1B;
    display: block;
}

/* === Footer === */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer__title {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.footer__subtitle {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer__description {
    color: var(--color-light-gray);
    line-height: 1.7;
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer__links a {
    color: var(--color-light-gray);
    transition: var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-primary-light);
    padding-left: var(--spacing-xs);
}

.footer__links li {
    color: var(--color-light-gray);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-dark-light);
    color: var(--color-light-gray);
}

.footer__bottom p {
    margin-bottom: var(--spacing-xs);
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* === Responsive Design === */
@media screen and (max-width: 968px) {
    :root {
        --fs-h1: 2.5rem;
        --fs-h2: 2rem;
        --fs-h3: 1.5rem;
    }

    .hero__container,
    .about__content,
    .contact__content {
        grid-template-columns: 1fr;
    }

    .hero__shape {
        width: 300px;
        height: 300px;
    }

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

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--color-dark);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-lg) var(--spacing-md);
        transition: var(--transition-normal);
    }

    .nav__menu.show-menu {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-md);
        font-size: 2rem;
        cursor: pointer;
        color: var(--color-white);
    }

    .nav__toggle {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
        cursor: pointer;
    }

    .nav__toggle span {
        width: 25px;
        height: 3px;
        background: var(--color-white);
        border-radius: 2px;
        transition: var(--transition-fast);
    }

    .hero__buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}

@media screen and (max-width: 480px) {
    :root {
        --fs-h1: 2rem;
        --fs-h2: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero__shape {
        width: 250px;
        height: 250px;
    }
}