:root {
    --bg-primary: #f9fafb;
    --bg-secondary: #ffffff;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --border-color: #e5e7eb;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --max-width: 1200px;
}

[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --border-color: #374151;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem;
    flex: 1;
    position: relative;
}

.note-card {
    background-color: var(--bg-secondary);
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
    padding: 2rem;
    margin: 1rem auto 0;
    border: 2px solid var(--border-color);
    position: relative;
    max-width: 900px;
}

/* Controls Section */
.controls-section {
    margin-bottom: 1.5rem;
    padding: 0.5rem;
    background-color: var(--bg-secondary);
    border-radius: 0.75rem;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow);
}

.controls-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.controls-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.controls-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    justify-content: flex-end;
}

/* Theme Switch */
.theme-switch {
    flex: 0 1 auto;
    display: flex;
    align-items: center;
    padding: 0.25rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    margin: 0.25rem;
}

.theme-switch label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    cursor: pointer;
    user-select: none;
}

.theme-switch input {
    display: none;
}

.theme-switch span {
    font-size: 0.875rem;
    line-height: 1;
}

.theme-switch div {
    width: 2rem;
    height: 1.125rem;
    background-color: var(--text-secondary);
    border-radius: 9999px;
    position: relative;
    transition: background-color 0.3s ease;
}

.theme-switch div div {
    width: 0.75rem;
    height: 0.75rem;
    background-color: white;
    border-radius: 50%;
    position: absolute;
    top: 0.1875rem;
    left: 0.1875rem;
    transition: transform 0.3s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.theme-switch input:checked + div {
    background-color: var(--accent-color);
}

.theme-switch input:checked + div div {
    transform: translateX(1rem);
}

/* Password Section */
.password-section {
    flex: 1 1 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin: 0.25rem;
    transition: all 0.3s ease;
}

.password-input {
    max-width: 200px;
    padding: 0.375rem 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 0.375rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
    height: 32px;
    transition: all 0.3s ease;
}

.password-input:hover {
    border-color: var(--accent-color);
}

.password-input:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

/* Note Content */
.note-content {
    margin-top: 1rem;
}

.note-textarea {
    width: 100%;
    min-height: 500px;
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    resize: vertical;
    outline: none;
    transition: all 0.3s ease;
    font-size: 1rem;
    line-height: 1.6;
    font-family: 'Inter', sans-serif;
}

.note-textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

/* Buttons */
.button {
    flex: 0 1 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    white-space: nowrap;
    height: 32px;
}

.button-primary {
    background-color: var(--accent-color);
    color: white;
}

.button-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.button-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.button-secondary:hover {
    background-color: var(--bg-primary);
    transform: translateY(-1px);
    border-color: var(--accent-color);
}

/* Save Status */
.save-status-container {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    padding: 0.75rem;
    border-radius: 0.75rem;
    background-color: var(--bg-primary);
}

/* Footer */
.footer {
    margin-top: 3rem;
    padding: 2rem;
    text-align: center;
    background-color: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Messages */
.error-message {
    background-color: #fee2e2;
    color: #991b1b;
    padding: 1rem;
    border-radius: 0.75rem;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
    border: 2px solid #fca5a5;
    clear: both;
    display: block;
}

.success-message {
    background-color: #ecfdf5;
    color: #065f46;
    padding: 1rem;
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    border: 2px solid #6ee7b7;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .note-card {
        margin-top: 1rem;
        padding: 1.25rem;
        border-radius: 0.5rem;
    }

    .controls-section {
        padding: 0.75rem;
    }

    .controls-group {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .controls-left,
    .controls-right {
        justify-content: center;
    }

    .password-section {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .password-input {
        width: 100%;
        max-width: none;
    }

    .button {
        width: 100%;
    }

    .note-textarea {
        min-height: 300px;
        padding: 1rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}