/* ===============================================
   noTube - Modern YouTube Converter CSS
   Theme: YouTube Red (#FF0000)
   =============================================== */

/* CSS Variables */
:root {
    --primary: #FF0000;
    --primary-dark: #CC0000;
    --primary-light: #FF4444;
    --dark: #0F0F0F;
    --dark-secondary: #212121;
    --gray-dark: #606060;
    --gray: #AAAAAA;
    --gray-light: #F2F2F2;
    --white: #FFFFFF;
    --border-radius: 24px;
    --border-radius-sm: 8px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    line-height: 1.7;
    color: var(--dark);
    background: linear-gradient(135deg, var(--gray-light) 0%, var(--white) 100%);
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Intro Paragraph */
body > p:first-of-type {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
    color: var(--white);
    padding: 16px 24px;
    text-align: center;
    font-size: 0.95rem;
    border-bottom: 3px solid var(--primary);
}

/* ===============================================
   HEADER & HERO SECTION
   =============================================== */
header {
    background: var(--white);
    padding: 60px 24px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-copy h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-copy h2 {
    font-size: clamp(1rem, 2vw, 1.4rem);
    margin-bottom: 20px;
    color: var(--gray-dark);
    font-weight: 500;
}

.hero-copy > p {
    color: var(--gray-dark);
    font-size: 1rem;
    margin-bottom: 32px;
    line-height: 1.8;
}

/* ===============================================
   CONVERTER FORM
   =============================================== */
.convert-form {
    background: var(--gray-light);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.page-title-search {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

#input {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-size: 16px;
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

#input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(255, 0, 0, 0.1);
}

#input::placeholder {
    color: var(--gray);
}

#selectedFormat {
    padding: 14px 24px;
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 16px;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    font-weight: 600;
    color: var(--dark);
    min-width: 100px;
}

#selectedFormat:focus {
    border-color: var(--primary);
}

#submit-button {
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

#submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4);
}

#submit-button:active {
    transform: translateY(0);
}

/* Hero Media */
.hero-media {
    position: relative;
}

.hero-media img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.hero-media img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

/* ===============================================
   MAIN CONTENT
   =============================================== */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px;
}

section {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

section:hover {
    box-shadow: var(--shadow-hover);
}

section h2 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    margin-bottom: 24px;
    color: var(--dark);
    position: relative;
    padding-bottom: 16px;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

section h3 {
    font-size: 1.2rem;
    margin: 28px 0 12px;
    color: var(--dark);
}

section p {
    color: var(--gray-dark);
    margin-bottom: 16px;
    line-height: 1.8;
}

/* Lists */
ul, ol {
    margin: 16px 0 16px 24px;
}

li {
    color: var(--gray-dark);
    margin-bottom: 12px;
    line-height: 1.7;
}

li strong {
    color: var(--dark);
}

/* Table */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 24px 0;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

table th {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 16px;
    text-align: left;
    font-weight: 600;
}

table td {
    padding: 16px;
    border-bottom: 1px solid var(--gray-light);
    background: var(--white);
}

table tr:last-child td {
    border-bottom: none;
}

table tr:hover td {
    background: var(--gray-light);
}

/* ===============================================
   FOOTER
   =============================================== */
footer {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-secondary) 100%);
    color: var(--white);
    text-align: center;
    padding: 40px 24px;
    margin-top: 0;
}

footer p {
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
    line-height: 1.8;
}

/* Alt Domains Section */
.alt-domains {
    background: var(--gray-light);
    padding: 40px 24px;
    text-align: center;
}

.alt-domains p {
    color: var(--gray-dark);
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.alt-domains ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.alt-domains li {
    margin: 0;
}

.alt-domains a {
    display: inline-block;
    padding: 8px 20px;
    background: var(--white);
    border-radius: var(--border-radius);
    color: var(--gray-dark);
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.alt-domains a:hover {
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 0, 0, 0.15);
    text-decoration: none;
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-media {
        order: -1;
    }

    header {
        padding: 40px 24px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 32px 16px;
    }

    .hero-copy {
        text-align: center;
    }

    .hero-copy h2 {
        margin-bottom: 16px;
    }

    .convert-form {
        padding: 20px;
    }

    .page-title-search {
        flex-direction: column;
        gap: 12px;
    }

    #input,
    #selectedFormat,
    #submit-button {
        width: 100%;
    }

    #selectedFormat {
        text-align: center;
    }

    main {
        padding: 32px 16px;
    }

    section {
        padding: 28px 20px;
        margin-bottom: 20px;
    }

    section h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .hero-copy h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    table {
        display: block;
        overflow-x: auto;
    }

    .alt-domains ul {
        gap: 10px;
    }

    .alt-domains a {
        padding: 6px 14px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    body > p:first-of-type {
        padding: 12px 16px;
        font-size: 0.85rem;
    }

    .hero-copy h1 {
        font-size: 1.5rem;
    }

    section h2 {
        font-size: 1.2rem;
    }

    section h3 {
        font-size: 1.1rem;
    }

    footer {
        padding: 32px 16px;
    }
}