* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-base), system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* Layout */
.app-root {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-content {
    flex: 1;
    overflow: hidden;
    display: flex;
}

/* Navigation */
.top-nav {
    height: 56px;
    display: flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: var(--space-card);
    box-shadow: var(--shadow-card);
}

/* Buttons */
button.primary {
    background: var(--accent);
    border: none;
    color: var(--text-accent);
    padding: 10px 16px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
}

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

    button.primary.yandex-sign-in {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        font-family: 'Helvetica Neue', Arial, sans-serif;
        font-weight: 600;
        height: 44px;
        color: var(--text-primary);
    }

        button.primary.yandex-sign-in:hover {
            background: var(--bg-surface);
        }

/* Auth layout */
.auth-root {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 16px;
}

/* Auth card */
.auth-card {
    padding: 24px;
}

.auth-title {
    margin: 0 0 24px 0;
    text-align: center;
    font-size: 22px;
}

/* Form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

    .form-group label {
        font-size: 14px;
        color: var(--text-secondary);
    }

    .form-group input {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        padding: 10px 12px;
        color: var(--text-primary);
        font-size: 14px;
    }

        .form-group input:focus {
            outline: none;
            border-color: var(--accent);
        }

/* Divider */
.auth-divider {
    margin: 24px 0;
    position: relative;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

    .auth-divider::before,
    .auth-divider::after {
        content: "";
        position: absolute;
        top: 50%;
        width: 45%;
        height: 1px;
        background: var(--border-color);
    }

    .auth-divider::before {
        left: 0;
    }

    .auth-divider::after {
        right: 0;
    }

/* OAuth */
.oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.oauth-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    color: var(--text-primary);
    cursor: pointer;
}

    .oauth-btn:hover {
        background: var(--bg-surface);
    }

/* Footer */
.auth-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
}

    .auth-footer a {
        margin-left: 4px;
        color: var(--accent);
        text-decoration: underline;
    }

/* Helpers */
.w-full {
    width: 100%;
}

.text-secondary {
    color: var(--text-secondary);
}

/* User menu */
.top-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background-color: var(--bg-surface);
}

.user-menu {
    position: relative;
    display: inline-block;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--border-color);
    z-index: 20;
}

.menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: max-content;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding-top: 55px;
    padding-bottom: 5px;
    box-shadow: var(--shadow-card);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateY(-5px);
    z-index: 10;
}

    .user-menu:hover .menu,
    .menu.show {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .menu button {
        border: none;
        background: none;
        padding: 6px 12px;
        cursor: pointer;
        width: 100%;
        text-align: left;
        color: var(--text-primary);
    }

        .menu button:hover {
            background-color: var(--bg-surface);
        }

.alert {
    padding: 10px;
    text-align: center;
    font-size: 14px;
    color: var(--text-error);
}