:root {
    --primary-color: #4a6baf;
    --primary-color-dark: #3a5595;
    --secondary-color: #6c8eef;
    --accent-color: #ff7846;
    --text-color-light: #333;
    --text-color-dark: #eee;
    --bg-color-light: #f5f7fa;
    --bg-color-dark: #1a1a2e;
    --chat-bg-light: #fff;
    --chat-bg-dark: #252541;
    --user-msg-bg-light: #e1ebfd;
    --user-msg-bg-dark: #2c2c54;
    --bot-msg-bg-light: #fff;
    --bot-msg-bg-dark: #30305a;
    --border-color-light: #ddd;
    --border-color-dark: #444;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 2px 10px rgba(0, 0, 0, 0.3);
    --font-size-small: 0.875rem;
    --font-size-medium: 1rem;
    --font-size-large: 1.125rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color-light);
    color: var(--text-color-light);
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background-color: var(--bg-color-dark);
    color: var(--text-color-dark);
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.logo h1 {
    font-weight: 600;
    font-size: 1.8rem;
}

.controls {
    display: flex;
    gap: 0.5rem;
}

.icon-button {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-color-light);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.dark-mode .icon-button {
    color: var(--text-color-dark);
}

.icon-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.dark-mode .icon-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.icon-button[title*="Improve ElevateGPT"] {
    color: var(--accent-color);
}
.icon-button[title*="Improve ElevateGPT"]:hover {
    background: #ffd1c0;
    color: #ff7846;
}

/* Settings Panel */
.settings-panel {
    background-color: var(--chat-bg-light);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    max-height: 70vh;
    overflow-y: auto;
}

.dark-mode .settings-panel {
    background-color: var(--chat-bg-dark);
    box-shadow: var(--shadow-dark);
}

.settings-panel h2 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.settings-group {
    margin-bottom: 1.5rem;
}

.settings-group h3 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 500;
    color: var(--primary-color);
}

.dark-mode .settings-group h3 {
    color: var(--secondary-color);
}

.setting {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.setting select {
    padding: 0.5rem;
    border-radius: 5px;
    border: 1px solid var(--border-color-light);
    background-color: var(--chat-bg-light);
    color: var(--text-color-light);
}

.dark-mode .setting select {
    background-color: var(--chat-bg-dark);
    border-color: var(--border-color-dark);
    color: var(--text-color-dark);
}

/* Language Focus Grid */
.language-focus-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
    margin-bottom: 0.5rem;
}

.language-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-option label {
    cursor: pointer;
}

.language-tag {
    display: inline-block;
    background-color: rgba(74, 107, 175, 0.1);
    border-radius: 4px;
    padding: 2px 6px;
    margin-right: 4px;
    font-size: 0.9em;
}

.dark-mode .language-tag {
    background-color: rgba(108, 142, 239, 0.2);
}

/* Toggle Switch */
.toggle {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

.hidden {
    display: none;
}

/* Main Chat Area */
main {
    flex: 1;
    overflow: hidden;
}

.chat-container {
    height: 100%;
    display: flex;
    flex-direction: column;
    border-radius: 10px;
    overflow: hidden;
    background-color: var(--chat-bg-light);
    box-shadow: var(--shadow-light);
}

.dark-mode .chat-container {
    background-color: var(--chat-bg-dark);
    box-shadow: var(--shadow-dark);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.message {
    margin-bottom: 1rem;
    max-width: 90%;
}

.message.user {
    margin-left: auto;
    background-color: var(--user-msg-bg-light);
    border-radius: 10px 10px 0 10px;
    padding: 1rem;
}

.dark-mode .message.user {
    background-color: var(--user-msg-bg-dark);
}

.message.system {
    margin-right: auto;
    background-color: var(--bot-msg-bg-light);
    border-radius: 10px 10px 10px 0;
    padding: 1rem;
    border-left: 4px solid var(--primary-color);
}

.dark-mode .message.system {
    background-color: var(--bot-msg-bg-dark);
}

.message-content {
    line-height: 1.5;
}

.message-content h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.dark-mode .message-content h3 {
    color: var(--secondary-color);
}

.message-content p {
    margin-bottom: 0.8rem;
}

.message-content p:last-child {
    margin-bottom: 0;
}

/* Input Area */
.input-area {
    padding: 1rem;
    border-top: 1px solid var(--border-color-light);
}

.dark-mode .input-area {
    border-top-color: var(--border-color-dark);
}

#user-input {
    width: 100%;
    min-height: 100px;
    padding: 0.8rem;
    border-radius: 5px;
    border: 1px solid var(--border-color-light);
    background-color: var(--chat-bg-light);
    color: var(--text-color-light);
    resize: vertical;
    font-family: inherit;
    margin-bottom: 0.8rem;
    transition: border-color 0.3s;
}

.dark-mode #user-input {
    background-color: var(--chat-bg-dark);
    border-color: var(--border-color-dark);
    color: var(--text-color-dark);
}

#user-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.input-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-actions {
    display: flex;
    gap: 0.8rem;
}

/* Preview Actions */
.preview-actions {
    display: flex;
    gap: 0.8rem;
    margin-top: 1rem;
    justify-content: flex-end;
}

.primary-button, .secondary-button {
    padding: 0.7rem 1.2rem;
    border-radius: 5px;
    border: none;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.2s;
}

.primary-button {
    background-color: var(--primary-color);
    color: white;
}

.primary-button:hover {
    background-color: var(--primary-color-dark);
}

.secondary-button {
    background-color: transparent;
    color: var(--text-color-light);
    border: 1px solid var(--border-color-light);
}

.dark-mode .secondary-button {
    color: var(--text-color-dark);
    border-color: var(--border-color-dark);
}

.secondary-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.dark-mode .secondary-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Result Tables */
.results-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    border-radius: 5px;
    overflow: hidden;
}

.results-table th, .results-table td {
    padding: 1rem;
    text-align: left;
    border: 1px solid var(--border-color-light);
}

.dark-mode .results-table th, .dark-mode .results-table td {
    border-color: var(--border-color-dark);
}

.results-table th {
    background-color: var(--primary-color);
    color: white;
}

.results-table tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.03);
}

.dark-mode .results-table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.03);
}

/* Score Display */
.score-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
}

.score-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-color);
}

.score-bar {
    flex: 1;
    height: 0.8rem;
    background-color: #ddd;
    border-radius: 0.4rem;
    overflow: hidden;
}

.score-fill {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 0.4rem;
}

/* Code Block Styling */
pre {
    background-color: rgba(0, 0, 0, 0.05);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin: 1rem 0;
}

.dark-mode pre {
    background-color: rgba(0, 0, 0, 0.3);
}

code {
    font-family: 'Courier New', Courier, monospace;
}

/* Modal */
.elevate-app-modal {
    position: fixed;
    inset: 0;
    z-index: 9980;
    background: rgba(30,40,60,.38);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.2s;
}

.elevate-app-modal.hidden {
    display: none !important;
}

.elevate-app-modal-content {
    max-width: 480px;
    width: 98vw;
    background: var(--chat-bg-light);
    color: var(--text-color-light);
    padding: 2rem 1.4rem 1.6rem 1.4rem;
    border-radius: 14px;
    box-shadow: 0 12px 36px 0 rgba(50,60,90,.18),0 0 4px #889ecc44;
    position: relative;
    font-size: 1.04em;
    animation: elevateModalEntry 0.27s cubic-bezier(.34,1.64,.7,1) 1;
}

@keyframes elevateModalEntry {
    0% { transform: scale(.91) translateY(40px); opacity:0.25;}
    90%{ transform: scale(1.04);}
    100%{ transform: none; opacity:1;}
}

.dark-mode .elevate-app-modal-content {
    background: var(--chat-bg-dark);
    color: var(--text-color-dark);
    box-shadow: 0 8px 28px 0 rgba(14,18,26,.36), 0 0 2px #22252b;
}

.elevate-app-modal-content h2 {
    margin-top:0;margin-bottom:0.5em;font-size:1.25em;font-weight:700;
    letter-spacing: .02em;
}

.elevate-app-modal-content p {
    font-size: 1em;
    color: #364055;
    margin-bottom:1em;
}

.dark-mode .elevate-app-modal-content p {
    color: #bbbbdf;
}

.elevate-app-modal-content textarea {
    margin-bottom: 7px;
    font-size: 1em;
    border: 1px solid #bbb;
}

.dark-mode .elevate-app-modal-content textarea {
    background-color: #21213a; color: #eee; border: 1px solid #2c2c44;
}

.elevate-app-modal-content button.primary-button {
    margin-top: 0;
}

.elevate-app-modal-content .modal-close {
    position: absolute; right: 0.7em; top: 0.65em;
}

#elevate-app-results {
    min-height:1.3em;
    margin-bottom: 0.2em;
}

/* Welcome Modal Styles */
.elevate-welcome-modal {
    position: fixed;
    inset: 0;
    z-index: 10010;
    background: rgba(30,40,60,0.54);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.22s;
    animation: fadeinWelcome 0.5s cubic-bezier(.4,1.3,.7,1);
}
@keyframes fadeinWelcome {
    0% { opacity: 0; transform: scale(.93);}
    100% { opacity:1; transform:none;}
}
.elevate-welcome-modal-content {
    background: var(--chat-bg-light);
    color: var(--text-color-light);
    padding: 2.2rem 1.6rem 1.2rem 1.6rem;
    border-radius: 16px;
    min-width: 340px;
    max-width: 780px;
    width: 99vw;
    max-height: 95vh;
    overflow-y: auto;
    box-shadow: 0 12px 36px 0 rgba(60,80,130,.17), 0 0 7px #1862aa17;
    position: relative;
    animation: elevateModalEntry .27s cubic-bezier(.34,1.64,.7,1) 1;
}
body.dark-mode .elevate-welcome-modal-content {
    background: var(--chat-bg-dark);
    color: var(--text-color-dark);
    box-shadow: 0 8px 28px 0 rgba(20,25,44,.24), 0 0 2px #333652;
}

.elevate-welcome-modal-content h2 {
    margin-top: 0;
    margin-bottom: 1.2em;
    font-size: 1.33rem;
    font-weight: 700;
    letter-spacing: .01em;
    display: flex;
    align-items: center;
    gap: 0.5em;
}

.elevate-welcome-modal-content .welcome-modal-close {
    position: absolute;
    right: 1.2em;
    top: 1.1em;
    font-size: 2rem;
    background: none;
    border: none;
    color: #aaa;
    opacity: 0.85;
    cursor: pointer;
    transition: color .2s;
}
.elevate-welcome-modal-content .welcome-modal-close:hover {
    color: #ff4c3e;
    opacity: 1;
}

.welcome-section {
    display: flex;
    flex-direction: row;
    gap: 1.6rem;
    flex-wrap: wrap;
}

.welcome-intro {
    flex: 1 1 240px;
    min-width: 230px;
    max-width: 380px;
    margin-bottom: 1.4em;
}

.welcome-features {
    margin: .85em 0 0 0;
    list-style: none;
    padding: 0;
    font-size: .98em;
}
.welcome-features li {
    margin-bottom: .4em;
    display: flex;
    align-items: center;
    gap: 0.4em;
}
.welcome-features i {
    min-width: 1.12em;
}

.highlight-expert {
    color: var(--primary-color);
    font-weight: 600;
    background: linear-gradient(90deg,#daf1fc 30%,#fff 100%);
    border-radius: 2.5px;
    padding: 0.04em 0.35em;
}
body.dark-mode .highlight-expert {
    background: linear-gradient(90deg,#233968 34%,#272642 100%);
    color: #8ecaff;
}

.welcome-comparison {
    flex: 2 1 340px;
    min-width: 275px;
    max-width: 420px;
}
.welcome-comparison h3 {
    font-size: 1.1em;
    color: var(--primary-color);
    margin-bottom: 0.7em;
}
body.dark-mode .welcome-comparison h3 {
    color: var(--secondary-color);
}
.welcome-compare-wrap {
    display: flex;
    flex-direction: row;
    gap: 1em;
    margin-bottom: 0.7em;
    width: 100%;
}
.welcome-iframe-col {
    width: 50%;
    min-width: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.iframe-label {
    font-size: .97em;
    color: #7a7a8c;
    margin-bottom: .35em;
    text-align: center;
}
body.dark-mode .iframe-label {
    color: #aaccff;
}

.welcome-preview-iframe {
    width: 210px;
    height: 210px;
    aspect-ratio: 1/1;
    border: 1.5px solid #ddddff;
    border-radius: 10px;
    background: #f9fafb;
    box-shadow: 0 2px 12px 0 rgba(78,107,175,.10);
    margin-bottom: .2em;
    transition: border-color .14s;
    object-fit: cover;
    display: block;
    cursor: pointer;
}
body.dark-mode .welcome-preview-iframe {
    background: #20203c;
    border-color: #334070;
    box-shadow: 0 1.5px 10px 0 rgba(68,124,188,.10);
}
.welcome-iframe-col {
    position: relative;
}
.welcome-fullscreen-btn {
    position: absolute;
    right: 10px;
    top: 14px;
    background: rgba(44,64,110,0.83);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    font-size: 1.37rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.88;
    z-index: 3;
    cursor: pointer;
    transition: background .18s;
}
.welcome-fullscreen-btn:hover {
    background: #ff7846;
    color: #fff;
    opacity: 1;
}
@media (max-width: 1050px) {
    .welcome-section { flex-direction: column; }
    .welcome-compare-wrap { flex-direction: row; }
    .welcome-comparison, .welcome-intro { max-width: 100%; min-width: 1px;}
    .welcome-preview-iframe { width: 160px; height: 160px; }
}

@media (max-width: 600px) {
    .elevate-welcome-modal-content { padding: 1.2rem 2vw 1rem 2vw; font-size:.98em; }
    .welcome-section, .welcome-compare-wrap { flex-direction: column;}
    .welcome-iframe-col { width: 100%; max-width: 99vw;}
    .welcome-preview-iframe { width: 98vw; max-width:330px; height: 98vw; min-width:120px;}
}

#elevate-iframe-modal {
    position: fixed;
    z-index: 11016;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(22, 28, 42, 0.72);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: elevateModalEntry 0.19s cubic-bezier(.34,1.64,.7,1) 1;
}
#elevate-iframe-modal.hidden {
    display: none !important;
}
.elevate-iframe-modal-content {
    background: #fff;
    border-radius: 18px;
    position: relative;
    box-shadow: 0 3px 38px 0 #2950b222;
    padding: 12px;
    max-width: 95vw;
    max-height: 96vh;
    display: flex;
    flex-direction: column;
}
body.dark-mode .elevate-iframe-modal-content {
    background: #23233d;
}

.elevate-iframe-modal-content iframe {
    width: 76vw;
    height: 76vw;
    max-width: 82vw;
    max-height: 74vh;
    min-width: 320px;
    border-radius: 10px;
    border: 2.5px solid #4a6baf;
    overflow: auto;
    background: #f5f7fa;
    object-fit: contain;
    margin: 0 auto;
}
body.dark-mode .elevate-iframe-modal-content iframe {
    background: #21213a;
    border-color: #6688ee;
}
.elevate-iframe-modal-close {
    position: absolute;
    top: -24px; /* visually above modal */
    right: -16px;
    font-size: 3.1rem;
    color: #fff;
    background: #355bd6;
    border: 5px solid #fff;
    border-radius: 50%;
    width: 64px;
    height: 64px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    box-shadow: 0 1px 22px 1px #3336691a;
    opacity: 0.93;
    transition: background .17s;
}
.elevate-iframe-modal-close:hover {
    background: #ff7846;
    color: #fff;
    opacity: 1;
    border-color: #fff0;
}
@media (max-width: 950px) {
    .elevate-iframe-modal-content iframe {
        width: 92vw;
        height: 70vw;
        max-width: 98vw;
        max-height: 64vh;
        min-width: 180px;
    }
}
@media (max-width: 600px) {
    .elevate-iframe-modal-content iframe {
        width: 98vw;
        height: 68vw;
        max-width: 99vw;
        max-height: 60vh;
        min-width: 80vw;
    }
    .elevate-iframe-modal-close {
        font-size: 2.5em;
        top: -31px;
        right: -12px;
        width: 46px; height:46px;
    }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .message {
        max-width: 95%;
    }
    
    .language-focus-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .input-controls {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .input-actions {
        width: 100%;
    }
    
    .primary-button, .secondary-button {
        flex: 1;
        justify-content: center;
    }
    
    .settings-panel {
        max-height: 80vh;
    }
}

@media (max-width: 560px) {
    .elevate-app-modal-content { 
        padding: 0.7em 0.2em 1.2em 0.2em; 
        font-size:0.98em; 
    }
}

/* Font Size Adjustments */
body.font-small {
    font-size: var(--font-size-small);
}

body.font-medium {
    font-size: var(--font-size-medium);
}

body.font-large {
    font-size: var(--font-size-large);
}

/* -------- Prompt Improver Progress Bar -------- */
.prompt-improver-progress {
    max-width: 340px;
    width: 90%;
    margin: 1.1em auto 0.7em auto;
    padding: 0.6em 1.1em;
    border-radius: 8px;
    background: linear-gradient(90deg,var(--primary-color) 14%,var(--secondary-color) 98%);
    box-shadow: 0 2px 10px 0 rgba(74,107,175,.13);
    color: #fff;
    font-size: 1.04em;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap:0.7em;
    opacity: 0.94;
    transition: background 0.27s;
    animation: promptImprBarIn 0.35s cubic-bezier(.25,1.4,.45,1);
}
@keyframes promptImprBarIn {
    0% { opacity:0; transform:translateY(18px) scale(.91);}
    80%{ opacity:0.8;}
    100%{ opacity:0.96; transform:none;}
}
.prompt-improver-progress .spinner {
    margin-right: 0.8em;
    width: 1.5em; height: 1.5em; display: inline-block; vertical-align:middle;
    border: 3px solid rgba(255,255,255,0.32);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg);}
    100% {transform: rotate(360deg);}
}
.prompt-improver-progress strong { margin-left:0.2em;}
.prompt-improver-progress .status-step { 
    flex: 1;
    white-space: pre-line;
}

/* End generation progress bar */

/* --- Combined Expert Prompt Copy Button --- */
.primary-button.combined-copy-btn {
    position: absolute;
    right: 16px;
    top: 10px;
    font-size: 0.97em;
    z-index: 2;
    padding: 0.5em 1em;
    box-shadow: 0 2px 8px 0 rgba(110, 180, 240, 0.07);
    border: none;
}

.primary-button.combined-copy-btn:active,
.primary-button.combined-copy-btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px #6688ddaa;
}

@media (max-width: 768px) {
    .primary-button.combined-copy-btn {
        right: 6px;
        top: 8px;
        font-size: 0.92em;
        padding: 0.45em 0.7em;
    }
}

.message-content > div:has(.combined-copy-btn) {
    position: relative;
}