/* k2k — Stylesheet
   Coloré et minimaliste
   Palette: coral, teal, sun, lavender sur fond clair
*/

:root {
    --coral: #FF6B6B;
    --teal: #4ECDC4;
    --sun: #FFD93D;
    --lavender: #A78BFA;
    --dark: #2D3436;
    --light: #FAFAFA;
    --gray: #636E72;
    --white: #FFFFFF;
    --max-width: 1100px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.7;
    font-size: 17px;
}

/* Header & Nav */
header {
    background: var(--white);
    border-bottom: 2px solid #EEE;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--dark);
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--coral);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark);
}

/* Hero */
.hero {
    text-align: center;
    padding: 5rem 1.5rem 4rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 2rem;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: var(--coral);
    color: var(--white);
    padding: 0.9rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

/* Cards (Accueil) */
.intro {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.card {
    padding: 2rem;
    border-radius: 16px;
    color: var(--white);
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.card p {
    font-size: 1rem;
    opacity: 0.95;
}

.card-coral { background: var(--coral); }
.card-teal { background: var(--teal); }
.card-sun { background: var(--sun); color: var(--dark); }
.card-sun p { opacity: 0.85; }

/* Location band */
.location {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--white);
    border-top: 1px solid #EEE;
    border-bottom: 1px solid #EEE;
}

.location p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--gray);
    font-size: 1.05rem;
}

.location strong {
    color: var(--dark);
}

/* Page headers */
.page-header {
    text-align: center;
    padding: 4rem 1.5rem 2rem;
    max-width: 700px;
    margin: 0 auto;
}

.page-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.15rem;
    color: var(--gray);
}

/* Approach steps */
.approach-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem 3rem;
}

.step {
    padding: 2rem;
    border-radius: 16px;
    color: var(--white);
    position: relative;
}

.step-num {
    display: inline-block;
    font-size: 2.5rem;
    font-weight: 800;
    opacity: 0.3;
    position: absolute;
    top: 0.8rem;
    right: 1.2rem;
}

.step h2 {
    font-size: 1.25rem;
    margin-bottom: 0.7rem;
}

.step p {
    font-size: 0.98rem;
    opacity: 0.95;
}

.step-coral { background: var(--coral); }
.step-teal { background: var(--teal); }
.step-sun { background: var(--sun); color: var(--dark); }
.step-sun p { opacity: 0.85; }
.step-lavender { background: var(--lavender); }

/* Approach extra */
.approach-extra {
    max-width: 700px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    text-align: center;
}

.approach-extra h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.approach-extra p {
    color: var(--gray);
}

/* Examples */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem 2rem;
}

.example {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    border-left: 5px solid;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.example-coral { border-left-color: var(--coral); }
.example-teal { border-left-color: var(--teal); }
.example-sun { border-left-color: var(--sun); }
.example-lavender { border-left-color: var(--lavender); }

.example-icon {
    font-size: 2.5rem;
    margin-bottom: 0.8rem;
}

.example h2 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.example p {
    color: var(--gray);
    margin-bottom: 0.8rem;
}

.example-detail {
    font-size: 0.92rem;
    font-style: italic;
    color: var(--gray);
    padding-top: 0.5rem;
    border-top: 1px solid #EEE;
}

.examples-note {
    text-align: center;
    max-width: 650px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.examples-note h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.examples-note p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

/* Contact */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 1.5rem 4rem;
}

.contact-info h2 {
    font-size: 1.2rem;
    margin: 1.5rem 0 0.5rem;
    color: var(--dark);
}

.contact-info h2:first-child {
    margin-top: 0;
}

.contact-info p {
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.form-group {
    margin-bottom: 1.3rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #EEE;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

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

.contact-form button {
    width: 100%;
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--light);
    text-align: center;
    padding: 2rem 1.5rem;
}

footer p {
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

footer a {
    color: var(--teal);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem 1.5rem;
        gap: 1rem;
        border-bottom: 2px solid #EEE;
    }

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

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

    .hero-sub {
        font-size: 1.05rem;
    }

    .contact-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}