/* layout.css - Flexbox, grid, structure */
body {
    min-height: 100vh;
    overflow-x: hidden;
}

#bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

#particules {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

#titre {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: var(--zoe-primary-soft);
    letter-spacing: 0.3em;
}

#chat {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

#messages {
    flex: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    max-width: 650px;
    margin: 0 auto;
    width: 100%;
}

#input-wrap {
    padding: 1.5rem;
    max-width: 650px;
    margin: 0 auto;
    width: 100%;
    position: sticky;
    bottom: 0;
    background: linear-gradient(transparent, var(--bg-dark) 30%);
}

#input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-white);
    padding: 1.2rem 1.5rem;
    border-radius: var(--radius-input);
    font-size: 1.1rem;
    font-family: var(--font-main);
    outline: none;
    transition: all 0.3s;
}

#input:focus {
    border-color: var(--input-border-focus);
    background: var(--input-bg-focus);
    box-shadow: var(--shadow-glow);
}

#input::placeholder {
    color: var(--placeholder);
}

/* Toast notifications */
#toast-container {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: rgba(255,255,255,0.1);
    color: var(--text-light);
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    animation: toastIn 0.3s ease-out;
}

.toast.error {
    border-left: 3px solid #ff6b6b;
    color: #ff6b6b;
}

.toast.warn {
    border-left: 3px solid #ffd93d;
    color: #ffd93d;
}

.toast.info {
    border-left: 3px solid var(--zoe-primary);
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}