:root {
    --primary: #00f2ff;
    --secondary: #7000ff;
    --bg: #0a0b0d;
    --text: #ffffff;
    --surface: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    font-family: 'Outfit', 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    box-sizing: border-box;
}

.blob {
    position: fixed;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--secondary), transparent 70%);
    filter: blur(80px);
    opacity: 0.15;
    z-index: -1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 10s infinite alternate;
}

@keyframes pulse {
    from {
        transform: translate(-50%, -50%) scale(1);
    }

    to {
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.container {
    max-width: 800px;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

h1 {
    margin-top: 0;
    font-size: 2.5rem;
    background: linear-gradient(135deg, #fff, var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    margin-bottom: 2rem;
}

.auth-screen,
.app-screen {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hidden {
    display: none !important;
}

input[type="password"],
textarea {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    font-family: inherit;
    color: #fff;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}

input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
}

textarea {
    min-height: 200px;
    resize: vertical;
}

button {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    color: #fff;
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s, filter 0.2s;
}

button:hover {
    transform: translateY(-2px);
    filter: brightness(1.2);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.contact-info {
    text-align: center;
    color: #888;
    font-size: 0.9rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.email-reveal {
    color: var(--primary);
    cursor: pointer;
    text-decoration: underline;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 1rem;
}

#progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    transition: width 0.3s ease;
}

.stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #aaa;
}

.back-link {
    display: inline-block;
    color: var(--primary);
    text-decoration: none;
    margin-bottom: 20px;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

/* Language Selection */
.language-selection {
    margin-bottom: 20px;
    text-align: left;
}

.language-selection label {
    display: block;
    margin-bottom: 10px;
    color: var(--primary);
    font-size: 0.9em;
}

.checkbox-group {
    display: flex;
    gap: 20px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 1em;
    user-select: none;
    position: relative;
    padding-left: 30px;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #1a1a1a;
    border: 1px solid var(--primary);
    border-radius: 4px;
    box-shadow: 0 0 5px rgba(0, 242, 255, 0.2);
}

.checkbox-container:hover input~.checkmark {
    background-color: #333;
}

.checkbox-container input:checked~.checkmark {
    background-color: var(--primary);
}

.checkbox-container input:checked~.checkmark:after {
    content: "";
    position: absolute;
    display: block;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid #000;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--secondary);
    color: var(--text);
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    font-family: inherit;
    opacity: 0.7;
    transition: all 0.3s;
    margin: 0;
}

.tab-btn:hover {
    opacity: 1;
    box-shadow: 0 0 5px var(--secondary);
}

.tab-btn.active {
    background: var(--secondary);
    color: #fff;
    opacity: 1;
    box-shadow: 0 0 10px var(--secondary);
}

.billing-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.8rem;
    display: block;
    margin-bottom: 1rem;
    text-align: right;
}

.billing-link:hover {
    text-decoration: underline;
}