/* Variables for easy color management */

:root {
    --dark-bg-primary: #121212;
    /* Deep background */
    --dark-bg-secondary: #1a1a1a;
    /* Card background */
    --dark-bg-tertiary: #2a2a2a;
    /* Input/section background */
    --accent-blue: #00e0ff;
    /* Bright blue for highlights */
    --accent-blue-dark: #00aaff;
    --text-light: #e0e0e0;
    --text-muted: #888888;
    --border-dark: #3a3a3a;
    --error-red: #ff6b6b;
    --success-green: #6bff6b;
    --button-glow: rgba(0, 224, 255, 0.4);
    --card-glow: rgba(0, 224, 255, 0.1);
}


/* General Body Styling */

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark-bg-primary);
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
    padding: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    box-sizing: border-box;
    overflow-x: hidden;
    background-image: radial-gradient(circle at top left, rgba(0, 224, 255, 0.05) 0%, transparent 40%), radial-gradient(circle at bottom right, rgba(255, 0, 255, 0.05) 0%, transparent 40%);
    background-repeat: no-repeat;
}


/* Container for the whole application */

.container {
    background-color: var(--dark-bg-secondary);
    border-radius: 20px;
    box-shadow: 0 0 40px var(--card-glow);
    padding: 50px;
    max-width: 1400px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 40px;
    border: 1px solid var(--border-dark);
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
}

.container:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 60px var(--card-glow);
}


/* Header Styling */

h1 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-blue);
    text-align: center;
    margin-bottom: 30px;
    font-weight: 700;
    font-size: 3.2em;
    letter-spacing: 2px;
    text-shadow: 0 0 15px rgba(0, 224, 255, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}


/* AI Icon Animation */

h1 .fas.fa-robot {
    animation: robot-float 4s infinite ease-in-out, robot-pulse 2.5s infinite ease-in-out;
    display: inline-block;
    color: var(--accent-blue);
    font-size: 0.9em;
    text-shadow: 0 0 10px rgba(0, 224, 255, 0.8);
}

@keyframes robot-float {
    0% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-8px) rotate(3deg);
    }
    100% {
        transform: translateY(0px) rotate(0deg);
    }
}

@keyframes robot-pulse {
    0% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.8;
    }
}


/* Main Content Layout - Horizontal Flexbox */

main {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}


/* Section Styling */

.input-section,
.output-section {
    background-color: var(--dark-bg-tertiary);
    border: 1px solid var(--border-dark);
    border-radius: 15px;
    padding: 30px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
    position: relative;
    flex: 1;
    min-width: 450px;
}

.input-section::before,
.output-section::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    border-radius: 16px;
    padding: 1px;
    background: linear-gradient(45deg, var(--accent-blue), #ff00ea);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease-out;
    pointer-events: none;
}

.input-section:hover::before,
.output-section:hover::before {
    opacity: 1;
}

.input-section:hover,
.output-section:hover {
    transform: translateY(-3px);
    box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.4), 0 5px 20px rgba(0, 0, 0, 0.2);
}

h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-blue-dark);
    margin-top: 0;
    margin-bottom: 25px;
    font-weight: 700;
    font-size: 2.2em;
    text-align: center;
    border-bottom: 2px solid var(--border-dark);
    padding-bottom: 10px;
    display: inline-block;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 0 8px rgba(0, 170, 255, 0.4);
}


/* Textarea Styling - Adjusted for smaller text and taller box */

textarea {
    width: 100%;
    padding: 18px;
    border: 1px solid var(--border-dark);
    border-radius: 10px;
    background-color: #222222;
    color: var(--text-light);
    font-size: 1em;
    /* Slightly smaller text */
    min-height: 450px;
    /* INCREASED HEIGHT HERE from 350px to 450px */
    resize: vertical;
    /* Allow vertical resizing */
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: inset 0 1px 5px rgba(0, 0, 0, 0.4);
}

textarea::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

textarea:focus {
    border-color: var(--accent-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.4), inset 0 1px 5px rgba(0, 0, 0, 0.4);
}


/* Summary Output Styling - Made identical to textarea for visual consistency */

#summaryOutput {
    width: 100%;
    /* Match textarea width */
    padding: 18px;
    /* Match textarea padding */
    border: 1px solid var(--border-dark);
    /* Match textarea border */
    border-radius: 10px;
    /* Match textarea border-radius */
    background-color: #222222;
    /* Match textarea background */
    color: var(--text-light);
    /* Match textarea text color */
    font-size: 1em;
    /* Match textarea font-size */
    min-height: 450px;
    /* This was already changed to 450px */
    /* Removed resize: vertical as it's a p tag, not a textarea */
    box-sizing: border-box;
    /* Match textarea box-sizing */
    font-family: 'Inter', sans-serif;
    /* Match textarea font-family */
    /* Removed transition: border-color, box-shadow as it's not interactive like textarea */
    box-shadow: inset 0 1px 5px rgba(0, 0, 0, 0.4);
    /* Match textarea box-shadow */
    line-height: normal;
    /* This was already changed to normal */
    white-space: pre-wrap;
    /* Preserves whitespace and line breaks */
    overflow-y: auto;
    /* Enables scrolling if content overflows */
    position: relative;
    z-index: 2;
}


/* Character/Word Count */

.char-word-count {
    text-align: right;
    font-size: 0.95em;
    color: var(--text-muted);
    margin-top: 10px;
}


/* Length Controls */

.length-controls {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.length-control-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 160px;
}

.length-control-group label {
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 8px;
    font-size: 1.05em;
}

.length-control-group input[type="number"] {
    width: 90px;
    padding: 12px;
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    text-align: center;
    font-size: 1.1em;
    font-family: 'Inter', sans-serif;
    background-color: #222222;
    color: var(--accent-blue);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.length-control-group input[type="number"]:focus {
    border-color: var(--accent-blue);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.4);
}


/* Button Group */

.button-group {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

button {
    flex: 1;
    padding: 18px 25px;
    background: linear-gradient(90deg, #00c6ff, #0072ff);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.2em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease, box-shadow 0.4s ease;
    box-shadow: 0 0 20px rgba(0, 224, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

button:hover {
    background: linear-gradient(90deg, #0072ff, #00c6ff);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 0 30px rgba(0, 224, 255, 0.6), 0 5px 15px rgba(0, 0, 0, 0.3);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 0 10px rgba(0, 224, 255, 0.2);
}

button:disabled {
    background: #444;
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
    color: #aaa;
}

button.clear-btn {
    background: #4a4a4a;
    box-shadow: 0 0 15px rgba(100, 100, 100, 0.2);
}

button.clear-btn:hover {
    background: #5a5a5a;
    box-shadow: 0 0 25px rgba(100, 100, 100, 0.4);
}

button.copy-btn {
    background: linear-gradient(90deg, #4CAF50, #8BC34A);
    box-shadow: 0 0 15px rgba(107, 255, 107, 0.3);
}

button.copy-btn:hover {
    background: linear-gradient(90deg, #8BC34A, #4CAF50);
    box-shadow: 0 0 25px rgba(107, 255, 107, 0.5);
}


/* Message Display (Loader, Errors, Success) */

.message-area {
    min-height: 30px;
    text-align: center;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1em;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.1);
}

.loader {
    border: 4px solid #3a3a3a;
    border-top: 4px solid var(--accent-blue);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    display: none;
}

.loader-text {
    color: var(--accent-blue);
    display: none;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.error-message-text {
    color: var(--error-red);
    text-shadow: 0 0 5px rgba(255, 107, 107, 0.5);
}

.success-message-text {
    color: var(--success-green);
    text-shadow: 0 0 5px rgba(107, 255, 107, 0.5);
}


/* Footer Styling */

footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 25px;
    border-top: 1px solid var(--border-dark);
    color: var(--text-muted);
    font-size: 0.95em;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

footer p {
    margin: 5px 0;
}


/* Responsive Design */

@media (max-width: 1200px) {
    main {
        flex-direction: column;
        gap: 30px;
    }
    .input-section,
    .output-section {
        min-width: unset;
    }
}

@media (max-width: 768px) {
    body {
        padding: 20px;
    }
    .container {
        padding: 30px;
        margin: 0 auto;
        gap: 25px;
    }
    h1 {
        font-size: 2.5em;
        gap: 15px;
    }
    h2 {
        font-size: 1.8em;
    }
    .length-controls {
        flex-direction: column;
        gap: 15px;
    }
    .button-group {
        flex-direction: column;
        gap: 10px;
    }
    button {
        padding: 15px 20px;
        font-size: 1em;
    }
    textarea,
    #summaryOutput {
        min-height: 250px;
        /* Adjusted for smaller screens */
        font-size: 0.95em;
    }
    .message-area {
        flex-direction: column;
        gap: 5px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 20px;
    }
    h1 {
        font-size: 1.8em;
    }
    h2 {
        font-size: 1.5em;
    }
    textarea,
    #summaryOutput {
        min-height: 200px;
        /* Further adjusted for very small screens */
        font-size: 0.9em;
    }
}