/* ExpertSYS - Chat Page Specific Styles */

/* ========== Chat Page Fixed Layout ========== */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.container {
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0 !important;
}

/* ========== Header - Fixed to Top ========== */
.header {
    border-radius: 0 !important;
    margin-bottom: 0 !important;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border-light);
}

/* ========== Main Content - Scrollable Area ========== */
.main-content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-lg);
}

/* ========== Chat Container ========== */
.chat-container {
    flex: initial;
    overflow-y: visible;
    padding: var(--spacing-md) 0;
}

/* ========== Input Area - Fixed to Bottom ========== */
.input-area {
    flex-shrink: 0;
    margin: 0 !important;
    background: var(--bg-primary) !important;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

/* ========== Mobile Optimizations ========== */
@media (max-width: 768px) {
    .container {
        height: auto !important;
        min-height: 100%;
        display: block !important;
        padding-bottom: 60px !important;
    }

    .header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: var(--bg-primary);
        padding: var(--spacing-sm) var(--spacing-md) !important;
    }

    .header h1 {
        font-size: 16px !important;
    }

    .header .subtitle {
        font-size: 11px !important;
        margin-top: 2px !important;
        margin-bottom: 2px !important;
        line-height: 1.3 !important;
    }

    .header-content {
        gap: var(--spacing-sm) !important;
    }

    .icon-btn {
        font-size: 12px !important;
        padding: 4px 8px !important;
    }

    #username-display {
        font-size: 11px !important;
    }

    html, body {
        overflow: auto !important;
        height: auto !important;
    }

    .main-content {
        overflow: visible !important;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .input-area {
        position: fixed !important;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 200;
        padding: 8px 12px !important;
        padding-bottom: calc(8px + env(safe-area-inset-bottom, 0)) !important;
        background: var(--bg-primary) !important;
        border-top: 1px solid var(--border-light);
        box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    }

    .composer {
        flex-direction: row !important;
        align-items: center !important;
        gap: 8px !important;
        max-width: 100% !important;
    }

    .composer textarea {
        min-height: 36px !important;
        max-height: 36px !important;
        height: 36px !important;
        padding: 8px 12px !important;
        font-size: 16px !important;
        resize: none !important;
        border-radius: 18px !important;
        line-height: 20px !important;
    }

    .composer .actions {
        flex-direction: row !important;
        gap: 4px !important;
    }

    .composer .btn {
        width: 36px !important;
        height: 36px !important;
        font-size: 16px !important;
        border-radius: 50% !important;
        flex-shrink: 0 !important;
    }
}