:root {
    --bg-primary: #f5f3ff;
    --bg-card: #ffffff;
    --primary-purple: #7c3aed;
    --light-purple: #ede9fe;
    --accent-purple: #8b5cf6;
    --dark-text: #1e1b4b;
    --gray-text: #6b7280;
    --border-color: #ddd6fe;
    --shadow: 0 10px 25px -5px rgba(124, 58, 237, 0.1), 0 8px 10px -6px rgba(124, 58, 237, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--dark-text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Netflix-Style Intro Animation Screen */
#intro-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    animation: fadeOutBackground 0.8s ease 2.2s forwards;
}

.loader-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.intro-logo {
    width: 120px;
    height: auto;
    animation: netflixZoom 2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.loader-spinner {
    width: 30px;
    height: 30px;
    border: 3px solid var(--light-purple);
    border-top: 3px solid var(--primary-purple);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    opacity: 0;
    animation: fadeInSpinner 0.3s ease 1s forwards, spin 0.8s linear infinite;
}

@keyframes netflixZoom {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }
    50% {
        transform: scale(1.15);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes fadeInSpinner {
    to { opacity: 1; }
}

@keyframes fadeOutBackground {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

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

/* Main Layout */
.main-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    width: 40px;
    height: auto;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.author-tag {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-text);
    background: var(--light-purple);
    padding: 6px 12px;
    border-radius: 20px;
}

/* Downloader UI */
.hero-section {
    text-align: center;
    margin-bottom: 40px;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 12px;
}

.hero-section p {
    color: var(--gray-text);
    font-size: 1rem;
}

.download-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 18px;
    color: var(--primary-purple);
    font-size: 1.1rem;
}

.input-group input {
    width: 100%;
    padding: 16px 16px 16px 50px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--dark-text);
}

.input-group input:focus {
    border-color: var(--primary-purple);
    background: #fff;
    box-shadow: 0 0 0 4px var(--light-purple);
}

.download-btn {
    background: linear-gradient(135deg, var(--primary-purple), var(--accent-purple));
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.download-btn:hover {
    opacity: 0.95;
    transform: translateY(-2px);
}

.download-btn:active {
    transform: translateY(0);
}

/* Progress Box */
.progress-box {
    margin-top: 25px;
    background: var(--bg-card);
    padding: 20px;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-text);
}

.progress-bar-track {
    width: 100%;
    height: 10px;
    background: var(--light-purple);
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--primary-purple);
    transition: width 0.2s ease;
    border-radius: 5px;
}

/* Modal Popup */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 27, 75, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.modal-card {
    background: #fff;
    padding: 40px;
    border-radius: 24px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
    animation: modalPop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.modal-icon {
    font-size: 3.5rem;
    color: var(--primary-purple);
    margin-bottom: 15px;
}

.modal-card h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--dark-text);
}

.modal-card p {
    color: var(--gray-text);
    font-size: 0.95krem;
    line-height: 1.5;
    margin-bottom: 25px;
}

.modal-close-btn {
    background: var(--primary-purple);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s;
}

.modal-close-btn:hover {
    background: var(--accent-purple);
}

/* Utility Class */
.hidden {
    display: none !important;
}

@media(max-width: 600px) {
    .hero-section h1 { font-size: 2rem; }
    .main-wrapper { padding: 15px; }
}