/* Import des polices */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- Keyframes Améliorés --- */
@keyframes fadeInSlideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { transform: scale(1); filter: drop-shadow(0 0 6px var(--glow-color)); }
  50% { transform: scale(1.08); filter: drop-shadow(0 0 20px var(--glow-color)); }
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--accent-glow-soft); }
  50% { border-color: var(--accent-glow); }
}

@keyframes floatingIcon {
  0%, 100% { transform: translateY(0) rotate(0); }
  25% { transform: translateY(-5px) rotate(-2deg); }
  75% { transform: translateY(5px) rotate(2deg); }
}

@keyframes buttonPulse {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 0 6px var(--button-glow); }
}

@keyframes shimmer {
  0% { transform: translateX(-150%); }
  100% { transform: translateX(150%); }
}

/* --- Variables CSS (Nuances de Bleu Premium) --- */
:root {
    /* Couleurs primaires */
    --bg-gradient-start: #040F16;  /* Bleu noir profond */
    --bg-gradient-mid: #0B2545;   /* Bleu royal profond */
    --bg-gradient-end: #13315C;   /* Bleu royal foncé */
    
    /* Accents et conteneur */
    --container-bg: rgba(12, 30, 54, 0.85);
    --container-border: rgba(42, 84, 134, 0.3);
    --container-glow: rgba(46, 196, 255, 0.08);
    
    /* Texte */
    --text-primary: #F7FAFF; /* Blanc bleuté éclatant */
    --text-secondary: #B8C5D6; /* Bleu gris clair */
    
    /* Accents */
    --accent-gradient-start: #00E5FF; /* Cyan électrique */
    --accent-gradient-end: #2979FF;  /* Bleu royal vif */
    --accent-glow: rgba(0, 229, 255, 0.8);
    --accent-glow-soft: rgba(0, 229, 255, 0.3);
    
    /* Éléments interactifs */
    --input-bg: rgba(9, 21, 38, 0.9);
    --input-border: rgba(65, 128, 195, 0.4);
    --input-focus-border: var(--accent-gradient-start);
    --input-focus-glow: rgba(0, 229, 255, 0.2);
    --button-text: #041E42;
    --button-glow: rgba(0, 229, 255, 0.25);
    
    /* Footer */
    --footer-text: #8BA1BD;
}

/* --- Styles Globaux --- */
body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 15px 20px; /* Padding réduit pour moins de hauteur */
    background: linear-gradient(200deg, var(--bg-gradient-start), var(--bg-gradient-mid), var(--bg-gradient-end));
    background-size: 200% 200%;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
    animation: gradientFlow 20s ease infinite;
    overflow-x: hidden;
}

/* --- Conteneur Principal --- */
.container {
    background: var(--container-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 28px 35px; /* Padding réduit */
    border-radius: 16px;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.5), 0 0 20px var(--container-glow), inset 0 0 1px rgba(255, 255, 255, 0.2);
    border: 1px solid var(--container-border);
    max-width: 520px;
    width: 100%;
    text-align: center;
    margin: 10px 0; /* Marge réduite */
    position: relative;
    overflow: hidden;
    animation: fadeInSlideUp 0.7s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    z-index: 1;
    display: flex;
    flex-direction: column;
}

/* Effet de brillance sur le bord */
.container::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid transparent;
    border-radius: 16px;
    animation: borderGlow 3s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

/* Effet de brillance traversant */
.container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 30%;
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 255, 255, 0.08),
        transparent
    );
    transform: skewX(-15deg);
    animation: shimmer 8s infinite;
    z-index: 0;
}

/* --- Icône d'Entête --- */
.header-icon {
    margin-bottom: 10px; /* Réduit */
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.1s both;
    position: relative;
    z-index: 1;
}

.header-icon i {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--accent-gradient-start), var(--accent-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding: 8px; /* Réduit */
    border-radius: 50%;
    display: inline-block;
    position: relative;
    --glow-color: var(--accent-glow);
    animation: pulseGlow 4s infinite ease-in-out, floatingIcon 6s ease-in-out infinite;
}

/* --- Typographie --- */
h1 {
    color: var(--text-primary);
    font-size: 1.8rem; /* Taille réduite */
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 10px; /* Réduit */
    position: relative;
    padding-bottom: 6px; /* Réduit */
    letter-spacing: -0.3px;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.2s both;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.15);
}

h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2.5px;
    background: linear-gradient(90deg, var(--accent-gradient-start), var(--accent-gradient-end));
    border-radius: 1.5px;
}

p {
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 16px; /* Réduit */
    font-size: 0.9rem; /* Réduit */
    font-weight: 400;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.3s both;
    flex-shrink: 0;
}

/* Lien LinkedIn dans le paragraphe amélioré */
p a.linkedin-link {
    color: var(--accent-gradient-start);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, var(--accent-gradient-start), var(--accent-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientFlow 4s ease infinite;
}

p a.linkedin-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: -1px;
    left: 0;
    background: linear-gradient(90deg, var(--accent-gradient-start), var(--accent-gradient-end));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

p a.linkedin-link:hover {
    text-shadow: 0 0 8px var(--accent-glow);
}

p a.linkedin-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* --- Formulaire --- */
form {
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.form-group {
    margin-bottom: 14px; /* Réduit */
    text-align: left;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) calc(0.3s + var(--i, 0) * 0.1s) both;
}

.form-group:nth-child(1) { --i: 1; }
.form-group:nth-child(2) { --i: 2; }

.form-group label {
    display: block;
    margin-bottom: 4px; /* Réduit */
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.85rem;
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
}

.form-group label i {
    margin-right: 5px;
    font-size: 0.9em;
    color: var(--accent-gradient-start);
    transition: transform 0.3s ease;
}

.form-group:focus-within label {
    color: var(--text-primary);
    transform: translateX(2px);
}

.form-group:focus-within label i {
    transform: scale(1.2) rotate(-5deg);
    color: var(--accent-gradient-end);
}

.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 10px 12px; /* Réduit */
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 0.95rem;
    color: var(--text-primary);
    font-family: inherit;
    caret-color: var(--accent-gradient-start);
    transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.form-group input[type="email"]::placeholder,
.form-group textarea::placeholder {
    color: var(--footer-text);
    opacity: 0.6;
}

.form-group input[type="email"]:hover,
.form-group textarea:hover {
    border-color: rgba(0, 229, 255, 0.5);
    background: rgba(9, 21, 38, 1);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.form-group input[type="email"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--input-focus-border);
    background: rgba(9, 21, 38, 1);
    box-shadow: 0 0 0 2px var(--input-focus-glow), 0 4px 10px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px; /* Réduit */
}

/* Compteur de caractères */
.char-counter {
    display: block;
    text-align: right;
    font-size: 0.75rem;
    color: var(--footer-text);
    margin-top: 4px;
    background: rgba(9, 21, 38, 0.3);
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 500;
}

.char-counter.limit-near {
    color: #FFB74D;
    background: rgba(255, 183, 77, 0.1);
}

.char-counter.limit-reached {
    color: #FF5252;
    font-weight: 600;
    background: rgba(255, 82, 82, 0.1);
}

/* Disclaimer */
.disclaimer {
    margin-bottom: 14px;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.4s both;
}

.disclaimer p {
    font-size: 0.8rem;
    color: var(--footer-text);
    background: rgba(9, 21, 38, 0.6);
    padding: 8px 10px;
    border-radius: 6px;
    border-left: 3px solid var(--accent-gradient-start);
    margin: 0;
}

.disclaimer i {
    color: var(--accent-gradient-start);
    margin-right: 5px;
}

/* --- Bouton Principal --- */
button[type="submit"] {
    background: linear-gradient(135deg, var(--accent-gradient-start) 0%, var(--accent-gradient-end) 100%);
    background-size: 200% auto;
    color: var(--button-text);
    padding: 10px 25px; /* Réduit */
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
    width: 100%;
    margin-top: 10px; /* Réduit */
    position: relative;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 229, 255, 0.2);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.5s both, gradientFlow 8s infinite;
}

button[type="submit"]::before {
    content: "";
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    z-index: -1;
    background: linear-gradient(135deg, var(--accent-gradient-start), var(--accent-gradient-end));
    border-radius: 10px;
    animation: buttonPulse 3s infinite;
    opacity: 0.7;
}

button[type="submit"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 229, 255, 0.3);
    filter: brightness(1.15);
}

button[type="submit"]:active {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 229, 255, 0.2);
    filter: brightness(1);
}

button[type="submit"] i {
    transition: transform 0.25s ease;
}

button[type="submit"]:hover i {
    transform: translateX(5px) rotate(15deg);
}

button[type="submit"]:disabled {
    background: linear-gradient(135deg, #506685, #7B93B0);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

/* --- Message de Réponse --- */
#response-message {
    margin-top: 14px; /* Réduit */
    margin-bottom: 0;
    font-weight: 500;
    font-size: 0.85rem;
    padding: 8px 10px;
    border-radius: 6px;
    min-height: 1.3em;
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(8px);
}

#response-message:not(:empty) {
    background: rgba(9, 21, 38, 0.9);
    opacity: 1;
    transform: translateY(0);
}

#response-message[style*="color: green"] {
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-gradient-start);
    border: 1px solid rgba(0, 229, 255, 0.2);
}

#response-message[style*="color: red"] {
    background: rgba(255, 69, 96, 0.1);
    color: #FF4560;
    border: 1px solid rgba(255, 69, 96, 0.2);
}

/* --- Footer --- */
footer {
    text-align: center;
    margin-top: 12px; /* Réduit */
    padding: 8px 20px; /* Réduit */
    font-size: 0.8rem;
    color: var(--footer-text);
    width: 100%;
    max-width: 520px;
    animation: fadeInSlideUp 0.6s cubic-bezier(0.25, 1, 0.5, 1) 0.6s both;
    flex-shrink: 0;
}

footer p {
    margin: 3px 0; /* Réduit */
    color: inherit;
    font-size: inherit;
    line-height: 1.3;
    animation: none;
}

/* Container pour les liens du footer */
.footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 4px; /* Réduit */
}

footer a {
    color: var(--accent-gradient-start);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    background: linear-gradient(90deg, var(--accent-gradient-start), var(--accent-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientFlow 4s ease infinite;
}

footer a i {
    margin-right: 4px;
    font-size: 1.1em;
}

footer a:hover {
    filter: brightness(1.2);
    text-shadow: 0 0 8px var(--accent-glow);
}

/* --- Responsive Design (Peaufiné) --- */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 20px 18px;
        border-radius: 14px;
        margin: 5px 0;
        max-width: 95%;
    }
    h1 {
        font-size: 1.5rem;
    }
    p {
        font-size: 0.85rem;
        margin-bottom: 12px;
    }
    .form-group input[type="email"],
    .form-group textarea,
    button[type="submit"] {
        padding: 8px 10px;
        font-size: 0.9rem;
        border-radius: 6px;
    }
    .form-group textarea {
        min-height: 70px;
    }
    button[type="submit"] {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
    footer {
        font-size: 0.75rem;
        max-width: 95%;
        padding: 5px;
    }
    .footer-links {
        gap: 8px;
    }
}

@media (max-width: 400px) {
    .container {
        padding: 15px 15px;
    }
    h1 {
        font-size: 1.3rem;
    }
    h1::after {
        width: 40px;
    }
    p {
        font-size: 0.8rem;
    }
    .form-group label {
        font-size: 0.75rem;
    }
    footer {
        font-size: 0.7rem;
    }
    .footer-links {
        flex-direction: column;
        gap: 3px;
    }
}