/* =========================
   RESET & BASE
   ========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


body {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* zone principale extensible */
main {
    flex: 1;
}



html, body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
}

/* =========================
    DEBUG
   ========================= */
.debug-banner {
    background: linear-gradient(90deg, #b91c1c, #ef4444);
    color: #fff;
    text-align: center;
    padding: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* =========================
    HEADER (IMAGE EN FOND)
   ========================= */
header {
    position: relative;
    height: 260px;
    background: var(--bg-header);
    overflow: hidden;
    border-bottom: 1px solid #1f2937;
}

header img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
    filter: contrast(1.05) saturate(1.1);
}

header::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(15, 18, 22, 0.4),
        rgba(15, 18, 22, 0.95)
    );
}

/* =========================
    CONTENT
   ========================= */
.content {
    max-width: 90%;
    margin: -5rem auto 3rem auto;
    background: var(--bg-card);
    padding: 2rem 2.5rem;
    border-radius: 2rem;
    box-shadow:
        0 10px 30px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.content h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.content p {
    margin-bottom: 0.6rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.content p strong {
    color: var(--text-main);
}


/* =========================
    MESSAGES — STYLES AVANCÉS
   ========================= */

.flash-messages  {
    display: flex;
    flex-direction: column;
    margin: 0.5rem;
}
[class^="message-"] {
    margin-top: 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.7rem;
    background: #1f2937;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ERROR */
.message-Error {
    color: #fecaca;
    border-left: 4px solid #ef4444;
    background: linear-gradient(
        90deg,
        rgba(239, 68, 68, 0.15),
        #1f2937 40%
    );
}

/* SUCCESS */
.message-Success {
    color: #bbf7d0;
    border-left: 4px solid #22c55e;
    background: linear-gradient(
        90deg,
        rgba(34, 197, 94, 0.15),
        #1f2937 40%
    );
}

/* INFO */
.message-Info {
    color: #bfdbfe;
    border-left: 4px solid #3b82f6;
    background: linear-gradient(
        90deg,
        rgba(59, 130, 246, 0.15),
        #1f2937 40%
    );
}

/* WARNING */
.message-Warning {
    color: #fde68a;
    border-left: 4px solid #f59e0b;
    background: linear-gradient(
        90deg,
        rgba(245, 158, 11, 0.15),
        #1f2937 40%
    );
}


/* =========================
    FOOTER
   ========================= */
footer {
    background: var(--bg-footer);
    border-top: 1px solid #1f2937;
    padding: 1.5rem 1rem;
    text-align: center;
}

footer a {
    color: var(--text-muted);
    text-decoration: none;
    margin: 0 0.8rem;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

footer p {
    margin-top: 0.8rem;
    font-size: 0.8rem;
    color: #6b7280;
}


/* =========================
    RESPONSIVE
   ========================= */

/* Tablettes */
@media (max-width: 768px) {
    header {
        height: 200px;
    }

    .content {
        margin: -3rem auto 2rem auto;
        padding: 1.5rem;
    }

    .content h1 {
        font-size: 1.6rem;
    }

    .content p {
        font-size: 0.9rem;
    }

    footer a {
        margin: 0 0.5rem;
        font-size: 0.85rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    header {
        height: 150px;
    }

    .debug-banner {
        font-size: 0.85rem;
        padding: 0.4rem;
    }

    .content {
        margin: 2rem;
        border-radius: 0.75rem;
    }

    .content h1 {
        font-size: 1.4rem;
        margin-bottom: 0.75rem;
    }

    .content p {
        font-size: 0.85rem;
        margin-bottom: 0.5rem;
    }

    [class^="message-"] {
        font-size: 0.85rem;
        padding: 0.6rem 0.8rem;
    }

    footer {
        padding: 1rem 0.5rem;
    }

    footer a {
        display: inline-block;
        margin: 0.3rem 0.4rem;
        font-size: 0.8rem;
    }

    footer p {
        margin-top: 0.6rem;
        font-size: 0.75rem;
    }
}

/* Form field hints */
.field-hints {
    font-size: 0.85rem;
    color: #6c757d;
    margin-top: 0.3rem;
}

/* Très petit mobile (320px) */
@media (max-width: 360px) {
    .content h1 {
        font-size: 1rem;
    }

    .content {
        padding: 0.75rem;
    }

    footer a {
        display: block;
        margin: 0.4rem 0;
    }
}