/**
 * No Chat State CSS Module
 * 
 * This module ONLY handles styling for the "no chat" / "new chat" state.
 * It is completely isolated and will NOT affect the "has chat" state.
 * 
 * This state is active when:
 * - .main-content does NOT have .has-chat class
 * - .centered-content is visible
 */

/* ============================================
   NO CHAT STATE - Centered Content
   ============================================ */

/* Ensure wrapper fills space and centers content */
.main-content:not(.has-chat) .main-content-inner {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* TODO: Re-enable mode segment selector next time
.main-content:not(.has-chat) .header-segmented-switch {
    display: none !important;
}
*/

/* Hide autoDropdown in main input section on desktop for no-chat state */
@media (min-width: 1200px) {
    .main-content:not(.has-chat) #autoDropdown {
        display: none !important;
    }
}

/* Show autoDropdown in main input section on mobile for no-chat state */
@media (max-width: 1199px) {
    .main-content:not(.has-chat) #autoDropdown {
        display: flex !important;
    }
}

/* Only apply when main-content does NOT have has-chat class */
.main-content:not(.has-chat) .centered-content {
    flex: 1;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    max-width: 900px !important;
    margin: 0 auto !important;
    width: 100%;
    max-height: 100vh;
    overflow-y: auto;
    padding: 24px;
    height: auto !important;
}

/* Welcome Section */
.main-content:not(.has-chat) .welcome-section {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    max-width: 800px;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-content:not(.has-chat) .welcome-icon {
    margin-bottom: 16px;
}

.main-content:not(.has-chat) .welcome-greeting {
    font-size: 32px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
    opacity: 0.9;
}

.main-content:not(.has-chat) .welcome-heading {
    font-size: 56px;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.1;
    letter-spacing: -1px;
}

.main-content:not(.has-chat) .welcome-hint {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 16px;
    opacity: 0.8;
    max-width: 600px;
    line-height: 1.5;
}

/* Input container in no-chat state */
.main-content:not(.has-chat) .main-input-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding: 0;
    border-top: none;
}

.main-content:not(.has-chat) .input-surface {
    background: var(--input-main-bg);
    border: 1px solid var(--border-color);
    border-radius: 32px;
    transition: box-shadow 0.2s, border-color 0.2s;
    min-height: 100px;
}

.main-content:not(.has-chat) .input-surface:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.main-content:not(.has-chat) .main-input-box {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 16px 20px;
    display: grid !important;
    grid-template-areas: "input input" "left right" !important;
    grid-template-columns: 1fr auto !important;
    gap: 12px !important;
    align-items: stretch !important;
}

.main-content:not(.has-chat) .input-left-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    grid-area: left !important;
}

.main-content:not(.has-chat) .input-right-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    grid-area: right !important;
    justify-self: end;
}

.main-content:not(.has-chat) .input-icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.main-content:not(.has-chat) .input-icon-btn:hover {
    background: var(--nav-active-bg);
    color: var(--text-primary);
}

.main-content:not(.has-chat) .input-tools-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    height: 40px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.main-content:not(.has-chat) .input-tools-btn:hover {
    background: var(--nav-active-bg);
    border-color: var(--text-faded);
    color: var(--text-primary);
}

.main-content:not(.has-chat) .main-input {
    grid-area: input !important;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    padding: 8px 0;
    outline: none;
    resize: none;
    line-height: 1.5;
    min-height: 40px;
}

.main-content:not(.has-chat) .input-speed-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 12px;
    height: 32px;
    border-radius: 16px;
    background: var(--nav-active-bg);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.main-content:not(.has-chat) .send-button {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.main-content:not(.has-chat) .send-button:hover {
    background: var(--nav-active-bg);
}

.main-content:not(.has-chat) .send-button svg {
    position: absolute;
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content:not(.has-chat) .send-button .voice-icon {
    opacity: 1;
    transform: scale(1);
}

.main-content:not(.has-chat) .send-button .send-icon {
    opacity: 0;
    transform: scale(0.8) translateY(8px);
}

.main-content:not(.has-chat) .send-button.has-text .voice-icon {
    opacity: 0;
    transform: scale(0.8) translateY(-8px);
    pointer-events: none;
}

.main-content:not(.has-chat) .send-button.has-text .send-icon {
    opacity: 1;
    transform: scale(1) translateY(0);
}

/* Action Pills */
.main-content:not(.has-chat) .action-pills-container {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 800px;
}

.main-content:not(.has-chat) .action-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.main-content:not(.has-chat) .action-pill:hover,
.main-content:not(.has-chat) .action-pill.active {
    background: var(--input-main-bg);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.main-content:not(.has-chat) .pill-icon {
    font-size: 18px;
}

/* AI disclaimer in no-chat state */
.main-content:not(.has-chat) .centered-content .ai-disclaimer {
    display: none !important;
}

/* Hide chat messages container in no-chat state */
.main-content:not(.has-chat) .chat-messages-container {
    display: none !important;
}

/* Main header in no-chat state */
.main-content:not(.has-chat) .main-header {
    justify-content: flex-end;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.main-content:not(.has-chat) .main-header-logo {
    display: none !important;
}

/* Hide tools button in no-chat state */
.main-content:not(.has-chat) #toolsBtn {
    display: none !important;
}

/* Show curriculum button only in no-chat state */
.user-logged-in .main-content:not(.has-chat) #curriculumBtn {
    display: flex !important;
}

/* Hide curriculum button in has-chat state */
.user-logged-in .main-content.has-chat #curriculumBtn {
    display: none !important;
}

/* Hide profile button in no-chat state */
.main-content:not(.has-chat) #profileBtn {
    display: none !important;
}

.main-content:not(.has-chat) #settingsBtn {
    display: none !important;
}

/* Note: Profile and settings buttons are hidden in has-chat state via has-chat-state.css */

/* Hide agent control in no-chat state */
.main-content:not(.has-chat) #agentControl {
    display: none !important;
}

/* Show agent control only when chats exist */
.main-content.has-chat #agentControl {
    display: inline-flex !important;
}

/* Hide curriculum insights button in no-chat state */
.main-content:not(.has-chat) #curriculumInsightsBtn {
    display: none !important;
}

/* Show curriculum insights button only when chats exist */
.main-content.has-chat #curriculumInsightsBtn {
    display: inline-flex !important;
}

/* Ensure no tool-related elements are visible in no-chat state */
.main-content:not(.has-chat) .tool-interface-panel,
.main-content:not(.has-chat) .chat-section-wrapper {
    display: none !important;
}

/* Mobile-specific styles for no-chat state */
@media (max-width: 1199px) {

    /* Ensure main-content itself is properly aligned on mobile */
    .main-content:not(.has-chat) {
        display: flex !important;
        flex-direction: column !important;
        align-items: stretch !important;
        justify-content: center !important;
        width: 100% !important;
        max-width: 100vw !important;
        margin: 0 !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
        padding-bottom: 0 !important;
        padding-top: 56px !important;
        /* Account for fixed header */
        position: relative !important;
    }

    /* Fix header visibility on mobile when no chat - use fixed positioning */
    .main-content:not(.has-chat) .main-header {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        z-index: 1000 !important;
        background-color: var(--main-bg) !important;
        border-bottom: none !important;
        width: 100% !important;
        padding: 10px 15px !important;
        justify-content: flex-end !important;
    }

    /* Ensure centered content is properly centered on mobile - account for header */
    .main-content:not(.has-chat) .centered-content {
        align-items: flex-start !important;
        justify-content: center !important;
        text-align: left !important;
        padding: 16px !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 auto !important;
        box-sizing: border-box !important;
        position: relative !important;
        left: 0 !important;
        right: 0 !important;
        transform: none !important;
    }

    /* Ensure main logo is centered on mobile */
    .main-content:not(.has-chat) .welcome-section {
        align-items: flex-start !important;
        text-align: left;
        margin-bottom: 32px;
        padding-left: 16px !important;
        box-sizing: border-box !important;
    }

    .main-content:not(.has-chat) .welcome-heading {
        font-size: 32px !important;
    }

    .main-content:not(.has-chat) .welcome-greeting {
        font-size: 20px !important;
    }

    /* Ensure input container is centered on mobile */
    .main-content:not(.has-chat) .main-input-container {
        padding: 0 16px !important;
    }

    /* Ensure all child elements are centered and input box mimics has-chat layout */
    .main-content:not(.has-chat) .main-input-box {
        border-radius: 0 !important;
        border: none !important;
        background: transparent !important;
        padding: 8px 12px !important;
        flex-wrap: wrap;
        gap: 8px;
    }

    .main-content:not(.has-chat) .main-input {
        font-size: 16px;
        order: -1;
        width: 100%;
        min-width: 100%;
        padding: 4px 8px;
    }

    .main-content:not(.has-chat) .input-left-actions {
        flex: 1;
    }

    .main-content:not(.has-chat) .action-pills-container {
        gap: 8px;
        margin-top: 24px;
        justify-content: center !important;
    }

    .main-content:not(.has-chat) .action-pill {
        padding: 8px 16px;
        font-size: 13px;
    }
}