/* Reset styles */
html, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

/* Variables */
:root {
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent-color: #f472b6;
    --light-bg: #f3f4f6;
    --dark-bg: #1f2937;
    --dark-text: #1f2937;
    --light-text: #ffffff;
    --gray-text: #6b7280;
    --container-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition-speed: 0.3s;
}

body {
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient-animation 15s ease infinite;
    line-height: 1.5;
    font-family: 'Source Sans Pro', sans-serif;
    color: var(--dark-text);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed);
}

/* Dark theme styling */
body.dark-theme {
    background: linear-gradient(-45deg, #2d3748, #4a5568, #1a202c, #2d3748);
    color: var(--light-text);
}

body.dark-theme .header {
    background-color: rgba(31, 41, 55, 0.9);
}

body.dark-theme .container,
body.dark-theme textarea {
    background-color: #2d3748;
    color: var(--light-text);
    border-color: #4a5568;
}

body.dark-theme .stat-card,
body.dark-theme .output.row,
body.dark-theme .keywords ul,
body.dark-theme .word-cloud-container {
    background-color: #4a5568;
    color: var(--light-text);
}

body.dark-theme .nav-link,
body.dark-theme .theme-toggle {
    color: var(--light-text);
}

body.dark-theme .control-btn,
body.dark-theme .tool-btn {
    background-color: #4a5568;
    color: var(--light-text);
}

body.dark-theme .stat-title {
    color: #d1d5db;
}

body.dark-theme .tabs {
    border-bottom-color: #4a5568;
}

body.dark-theme .char-limit {
    color: #d1d5db;
    background-color: rgba(45, 55, 72, 0.8);
}

body.dark-theme .logo {
    color: var(--primary-light);
}

@keyframes gradient-animation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Header */
.header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    padding: 1rem 0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all var(--transition-speed);
}

.header-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-icon {
    color: var(--primary-color);
}

.logo:hover {
    color: var(--primary-dark);
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-link {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all var(--transition-speed);
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

/* Main content */
.main-content {
    flex: 1;
    width: 90%;
    max-width: 1000px;
    margin: 2rem auto;
}

.container {
    margin: 0 auto;
    padding: 2rem;
    background-color: #FFFFFF;
    box-shadow: var(--container-shadow);
    border-radius: 12px;
    transition: all var(--transition-speed);
}

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

h1 {
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    margin: 0 0 1.5rem;
    color: var(--primary-color);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}

/* About section */
.about-section {
    margin: 2rem 0;
    padding: 1.5rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    box-shadow: var(--container-shadow);
    transition: all var(--transition-speed);
}

body.dark-theme .about-section {
    background-color: #2d3748;
}

.about-section:hover {
    box-shadow: var(--hover-shadow);
    transform: translateY(-3px);
}

.about-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-content {
    line-height: 1.7;
}

.about-content p {
    margin-bottom: 1rem;
}

/* Controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 1rem;
}

.control-btn {
    background-color: var(--light-bg);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-btn:hover {
    background-color: var(--primary-light);
    color: var(--light-text);
    transform: translateY(-2px);
}

.control-btn.active {
    background-color: var(--primary-color);
    color: var(--light-text);
}

/* Button redirection styles */
.control-btn[data-redirect],
.tool-btn[data-redirect] {
    position: relative;
    overflow: hidden;
}

.control-btn[data-redirect]::after,
.tool-btn[data-redirect]::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 10px;
    width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 4px solid currentColor;
    opacity: 0;
    transform: translateY(-50%);
    transition: opacity var(--transition-speed), right var(--transition-speed);
}

.control-btn[data-redirect]:hover::after,
.tool-btn[data-redirect]:hover::after {
    opacity: 1;
    right: 5px;
}

/* Textarea */
.editor-container {
    position: relative;
    margin: 1rem 0;
}

textarea {
    width: 100%;
    height: 250px;
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    outline: none;
    font-size: 1rem;
    resize: none;
    line-height: 1.6;
    transition: all var(--transition-speed);
    box-sizing: border-box;
}

textarea:hover {
    border-color: var(--primary-light);
}

textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

.char-limit {
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 0.85rem;
    color: var(--gray-text);
    background-color: rgba(255, 255, 255, 0.8);
    padding: 2px 8px;
    border-radius: 12px;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.stat-card {
    background-color: var(--light-bg);
    padding: 1rem;
    border-radius: 8px;
    transition: all var(--transition-speed);
    text-align: center;
}

.stat-card:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
    color: var(--light-text);
}

.stat-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    color: var(--gray-text);
}

.stat-card:hover .stat-title {
    color: rgba(255, 255, 255, 0.8);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

/* Output rows - legacy style updated */
.output.row {
    width: 100%;
    border: 1px solid #e2e8f0;
    font-size: 1.2rem;
    margin: 1% 0;
    background-color: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-speed);
}

.output.row:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.output.row div {
    display: inline-block;
    width: 42%;
    padding: 12px 15px;
    margin: 1%;
    transition: all var(--transition-speed);
}

.output.row div:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.output.row span {
    font-weight: bold;
    font-size: 1.3rem;
    color: var(--primary-color);
}

/* Readability button */
#readability {
    width: 52%;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

#readability:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
    transform: translateY(-2px);
}

#readability:active {
    background-color: var(--primary-dark);
    transform: translateY(0);
}

/* Keywords section */
.keywords {
    display: none;
    margin: 2rem 0 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.keywords-title {
    margin-bottom: 1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.keywords ul {
    font-weight: 400;
    border: 1px solid #e2e8f0;
    font-size: 1.2rem;
    background-color: var(--light-bg);
    margin: 1rem 0;
    border-radius: 8px;
    padding: 0.5rem;
    display: flex;
    flex-wrap: wrap;
}

.keywords li {
    display: inline-block;
    width: 44%;
    padding: 12px;
    margin: 1%;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

.keywords li:hover {
    background-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.keywords li b {
    color: var(--primary-color);
}

/* Word Cloud */
.word-cloud-container {
    margin-top: 2rem;
    height: 200px;
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 1rem;
    display: none;
}

/* Text tools */
.text-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 1.5rem 0;
}

.tool-btn {
    background-color: var(--light-bg);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-btn:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
    transform: translateY(-2px);
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 2px solid #e2e8f0;
}

.tab {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.tab:hover {
    color: var(--primary-color);
}

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Footer */
.footer {
    background-color: var(--dark-text);
    color: var(--light-text);
    padding: 2rem 0;
    margin-top: 3rem;
}

body.dark-theme .footer {
    background-color: #111827;
}

.footer-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-section {
    flex: 1;
    min-width: 200px;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-light);
}

.footer-links {
    list-style: none;
}

.footer-link {
    margin-bottom: 0.5rem;
}

.footer-link a {
    color: #d1d5db;
    text-decoration: none;
    transition: all var(--transition-speed);
}

.footer-link a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.copyright {
    width: 100%;
    text-align: center;
    padding-top: 2rem;
    margin-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-text);
}

/* Theme toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--dark-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.theme-toggle:hover {
    color: var(--primary-color);
    transform: rotate(30deg);
}

/* ===== Dark Mode Fixes ===== */
.theme-toggle {
    background: none;
    border: none;
    color: var(--dark-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    padding: 8px;
    border-radius: 50%;
}

body.dark-theme .theme-toggle {
    color: var(--light-text);
    background-color: rgba(255, 255, 255, 0.1);
}

body.dark-theme .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Fix input fields in dark mode */
body.dark-theme input,
body.dark-theme textarea {
    background-color: #2d3748;
    color: var(--light-text);
    border-color: #4a5568;
}

body.dark-theme input::placeholder {
    color: #a0aec0;
}

/* Fix navigation link hover states */
body.dark-theme .nav-link:hover {
    color: var(--primary-light);
    background-color: rgba(129, 140, 248, 0.1);
}

/* Fix navigation alignment */
.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    padding: 0;
    margin: 0;
}

.nav-links li {
    list-style: none;
    display: flex;
    align-items: center;
}

/* Theme toggle specific styling */
.nav-links li:last-child {
    margin-left: 0.5rem;
}

.theme-toggle {
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile responsive fix */
@media (max-width: 768px) {
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .nav-links li:last-child {
        margin-left: 0;
    }
}

/* Responsive styles */
@media (max-width: 900px) {
    .header-container, .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .nav-links {
        margin-top: 1rem;
    }
    
    .footer-section {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .main-content {
        width: 95%;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .output.row div {
        width: 90%;
        display: block;
    }
    
    #readability {
        width: 90%;
    }
    
    .keywords li {
        width: 90%;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .controls, .text-tools {
        justify-content: center;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .tab {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}