:root {
    --bg-color: #0d1117;
    --card-bg: rgba(22, 27, 34, 0.7);
    --border-color: rgba(48, 54, 61, 0.8);
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #3182ce;
    --danger: #f85149;
    --danger-hover: #da3633;
    --success: #3fb950;
    --warning: #d29922;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    --glass-blur: blur(12px);
    --max-width: 600px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(88, 166, 255, 0.05) 0%, transparent 50%);
    animation: rotate 60s linear infinite;
    z-index: -1;
    pointer-events: none;
}

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

.container {
    width: 100%;
    max-width: var(--max-width);
    padding: 2rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: fadeInDown 0.8s ease-out;
}

.logo-container {
    margin: 0 auto 1.5rem;
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(88,166,255,0.2), rgba(88,166,255,0.05));
    border: 1px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(88,166,255,0.2);
    overflow: hidden;
}

.logo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.logo-fallback {
    font-size: 2.5rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 0.5rem;
    background: linear-gradient(90deg, #fff, #8b949e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Glassmorphism Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--box-shadow);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 0.6s ease-out forwards;
}

.card:hover {
    box-shadow: 0 12px 32px rgba(0,0,0,0.6);
}

.hidden {
    display: none !important;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.user-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
}

.text-link {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

.text-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Forms & Inputs */
textarea {
    width: 100%;
    height: 180px;
    background: rgba(13, 17, 23, 0.8);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 1rem;
    font-family: monospace;
    font-size: 1rem;
    resize: none;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.2);
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

#char-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

.primary-btn {
    background: var(--text-primary);
    color: var(--bg-color);
    width: 100%;
}

.primary-btn:hover {
    background: #c9d1d9;
    transform: translateY(-2px);
}

.active-btn {
    background: var(--accent);
    color: #fff;
    padding: 0.75rem 2rem;
}

.active-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 166, 255, 0.3);
}

.secondary-btn {
    background: var(--border-color);
    color: var(--text-primary);
}

.secondary-btn:hover {
    background: #4b525d;
}

.danger-btn {
    background: var(--danger);
    color: #fff;
    width: 100%;
    font-size: 1.1rem;
    padding: 1rem;
}

.danger-btn:hover {
    background: var(--danger-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(248, 81, 73, 0.3);
}

/* Result Box */
.result-box {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px dashed var(--border-color);
    animation: fadeIn 0.5s ease;
}

.copy-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

input[type="text"] {
    flex: 1;
    background: rgba(13, 17, 23, 0.8);
    border: 1px solid var(--border-color);
    color: var(--accent);
    border-radius: 8px;
    padding: 0 1rem;
    font-family: monospace;
    font-size: 0.9rem;
    outline: none;
}

.feedback {
    font-size: 0.85rem;
    color: var(--success);
    opacity: 0;
    transition: opacity 0.3s;
    height: 1rem;
    text-align: right;
}

.feedback.show {
    opacity: 1;
}

/* Reveal State text */
.warning-text {
    color: var(--warning);
    background: rgba(210, 153, 34, 0.1);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid rgba(210, 153, 34, 0.3);
}

.success-text {
    color: var(--success);
    font-weight: 600;
}

/* Error State */
.error-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--danger);
}

#reveal-error {
    text-align: center;
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem !important;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(88, 166, 255, 0.1);
    border-left-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-content {
    max-width: 400px;
    width: 90%;
    text-align: center;
    transform: scale(1);
    transition: transform 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-overlay.hidden .modal-content {
    transform: scale(0.9);
}

/* Cookie Banner */
.cookie-banner {
    background: #11151c; /* Solid dark background */
    border: 1px solid var(--border-color);
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(150%);
    width: 90%;
    max-width: 600px;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cookie-banner.show {
    transform: translateX(-50%) translateY(0);
}

.cookie-banner p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.cookie-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Mobile Adjustments */
@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    .card {
        padding: 1.5rem;
    }
    h1 {
        font-size: 2rem;
    }
    .copy-group {
        flex-direction: column;
    }
    .copy-group .btn {
        width: 100%;
    }
}