:root {
    --bg-dark: #050505;
    --bg-panel: #111111;
    --bg-hover: #1a1a1a;
    --text-main: #f4f4f4;
    --text-muted: #888888;
    --border-color: #222222;
    --accent: #ffffff;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.hidden {
    display: none !important;
}

.view {
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
    flex: 1;
}

.view.active {
    opacity: 1;
    display: block;
    animation: fadeIn 0.5s ease-out forwards;
}

/* PWA Popup */
.pwa-popup {
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideDown 0.5s ease-out;
    position: sticky;
    top: 0;
    z-index: 100;
}

.pwa-content {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.pwa-icon { color: var(--accent); }

/* Header */
.navbar {
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Buttons */
button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: 'Syne', sans-serif;
    font-weight: 600;
    transition: all 0.2s ease;
}

button:active {
    transform: scale(0.95); /* Click animation */
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-dark);
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    background-color: #e0e0e0;
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 4px;
}

.btn-outline:hover {
    background-color: var(--bg-hover);
}

.btn-small {
    background-color: var(--text-main);
    color: var(--bg-dark);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.btn-icon {
    background: transparent;
    color: var(--text-muted);
    font-size: 1.2rem;
}

.btn-link {
    background: transparent;
    color: var(--accent);
    text-decoration: underline;
}

.full-width { width: 100%; }

/* Main Container */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

/* Hero Section */
.hero {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 15px;
}

.feature-card h3 { margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.9rem; }

/* Auth & Upload Cards */
.auth-card, .upload-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 8px;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.auth-card h2, .upload-card h2 {
    margin-bottom: 25px;
    text-align: center;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-group input {
    width: 100%;
    padding: 12px 15px 12px 40px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 4px;
    outline: none;
    font-family: 'Syne', sans-serif;
}

.input-group input:focus { border-color: var(--accent); }

.auth-toggle {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.error-msg {
    color: #ff5555;
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 15px;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    padding: 50px 20px;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--bg-dark);
}

.upload-area:hover {
    border-color: var(--accent);
    background-color: var(--bg-hover);
}

.upload-area.disabled {
    opacity: 0.5;
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

#upload-progress {
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
}

/* Result Area */
.result-area {
    margin-top: 20px;
    text-align: center;
    animation: fadeIn 0.4s ease;
}

.success-msg { color: #aaaaaa; margin-bottom: 15px; }

#preview-img {
    max-width: 100%;
    border-radius: 4px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

.link-box {
    display: flex;
    gap: 10px;
}

.link-box input {
    flex: 1;
    padding: 10px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 4px;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.8;
}